From 55ea1cfab24e37a347f1beae9f0b6724cad18f6b Mon Sep 17 00:00:00 2001 From: Paul Chavent Date: Thu, 6 Dec 2012 16:25:05 +0100 Subject: net : enable tx time stamping in the vde driver. This new version moves the skb_tx_timestamp in the main uml driver. This should avoid the need to call this function in each transport (vde, slirp, tuntap, ...). It also add support for ethtool get_ts_info. Signed-off-by: Paul Chavent Acked-by: Richard Cochran Signed-off-by: Richard Weinberger --- arch/um/drivers/net_kern.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/um') diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c index d8926c303629..39f186252e02 100644 --- a/arch/um/drivers/net_kern.c +++ b/arch/um/drivers/net_kern.c @@ -218,6 +218,7 @@ static int uml_net_start_xmit(struct sk_buff *skb, struct net_device *dev) spin_lock_irqsave(&lp->lock, flags); len = (*lp->write)(lp->fd, skb, lp); + skb_tx_timestamp(skb); if (len == skb->len) { dev->stats.tx_packets++; @@ -281,6 +282,7 @@ static void uml_net_get_drvinfo(struct net_device *dev, static const struct ethtool_ops uml_net_ethtool_ops = { .get_drvinfo = uml_net_get_drvinfo, .get_link = ethtool_op_get_link, + .get_ts_info = ethtool_op_get_ts_info, }; static void uml_net_user_timer_expire(unsigned long _conn) -- cgit v1.2.3 From fdfa4c952844fce881df8c76de9c7180cbe913ab Mon Sep 17 00:00:00 2001 From: Sergei Trofimovich Date: Sun, 30 Dec 2012 01:37:30 +0300 Subject: um: add missing declaration of 'getrlimit()' and friends arch/um/os-Linux/start_up.c: In function 'check_coredump_limit': arch/um/os-Linux/start_up.c:338:16: error: storage size of 'lim' isn't known arch/um/os-Linux/start_up.c:339:2: error: implicit declaration of function 'getrlimit' [-Werror=implicit-function-declaration] Signed-off-by: Sergei Trofimovich CC: Jeff Dike CC: Richard Weinberger CC: Al Viro CC: user-mode-linux-devel@lists.sourceforge.net CC: user-mode-linux-user@lists.sourceforge.net CC: linux-kernel@vger.kernel.org Signed-off-by: Richard Weinberger --- arch/um/os-Linux/start_up.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/um') diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c index da4b9e9999fd..337518c5042a 100644 --- a/arch/um/os-Linux/start_up.c +++ b/arch/um/os-Linux/start_up.c @@ -15,6 +15,8 @@ #include #include #include +#include +#include #include #include #include -- cgit v1.2.3 From 72383d43b223c410fc61d9e905690b9b9ba9d418 Mon Sep 17 00:00:00 2001 From: Sergei Trofimovich Date: Sun, 30 Dec 2012 01:37:31 +0300 Subject: um: fix build failure due to mess-up of sig_info protorype MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit arch/um/os-Linux/signal.c:18:8: error: conflicting types for 'sig_info' In file included from /home/slyfox/linux-2.6/arch/um/os-Linux/signal.c:12:0: arch/um/include/shared/as-layout.h:64:15: note: previous declaration of 'sig_info' was here Signed-off-by: Sergei Trofimovich CC: Jeff Dike CC: Richard Weinberger CC: "Martin Pärtel" CC: Al Viro CC: user-mode-linux-devel@lists.sourceforge.net CC: user-mode-linux-user@lists.sourceforge.net CC: linux-kernel@vger.kernel.org Signed-off-by: Richard Weinberger --- arch/um/os-Linux/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/um') diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index b1469fe93295..9d9f1b4bf826 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -15,7 +15,7 @@ #include #include "internal.h" -void (*sig_info[NSIG])(int, siginfo_t *, struct uml_pt_regs *) = { +void (*sig_info[NSIG])(int, struct siginfo *, struct uml_pt_regs *) = { [SIGTRAP] = relay_signal, [SIGFPE] = relay_signal, [SIGILL] = relay_signal, -- cgit v1.2.3 From cc4f02486c09977ccbe3ce2276aca5608a44ca00 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 11 Mar 2013 10:03:42 +0100 Subject: um: Use tty_port_operations->destruct As we setup the SIGWINCH handler in tty_port_operations->activate it makes sense to tear down it in ->destruct. Signed-off-by: Richard Weinberger --- arch/um/drivers/line.c | 26 ++++++++++++++------------ arch/um/drivers/ssl.c | 1 - arch/um/drivers/stdio_console.c | 1 - 3 files changed, 14 insertions(+), 14 deletions(-) (limited to 'arch/um') diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index f1b38571f94e..232243aec70c 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -315,8 +315,22 @@ static int line_activate(struct tty_port *port, struct tty_struct *tty) return 0; } +static void unregister_winch(struct tty_struct *tty); + +static void line_destruct(struct tty_port *port) +{ + struct tty_struct *tty = tty_port_tty_get(port); + struct line *line = tty->driver_data; + + if (line->sigio) { + unregister_winch(tty); + line->sigio = 0; + } +} + static const struct tty_port_operations line_port_ops = { .activate = line_activate, + .destruct = line_destruct, }; int line_open(struct tty_struct *tty, struct file *filp) @@ -340,18 +354,6 @@ int line_install(struct tty_driver *driver, struct tty_struct *tty, return 0; } -static void unregister_winch(struct tty_struct *tty); - -void line_cleanup(struct tty_struct *tty) -{ - struct line *line = tty->driver_data; - - if (line->sigio) { - unregister_winch(tty); - line->sigio = 0; - } -} - void line_close(struct tty_struct *tty, struct file * filp) { struct line *line = tty->driver_data; diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c index 16fdd0a0f9d6..b8d14fa52059 100644 --- a/arch/um/drivers/ssl.c +++ b/arch/um/drivers/ssl.c @@ -105,7 +105,6 @@ static const struct tty_operations ssl_ops = { .throttle = line_throttle, .unthrottle = line_unthrottle, .install = ssl_install, - .cleanup = line_cleanup, .hangup = line_hangup, }; diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c index 827777af3f6d..7b361f36ca96 100644 --- a/arch/um/drivers/stdio_console.c +++ b/arch/um/drivers/stdio_console.c @@ -110,7 +110,6 @@ static const struct tty_operations console_ops = { .set_termios = line_set_termios, .throttle = line_throttle, .unthrottle = line_unthrottle, - .cleanup = line_cleanup, .hangup = line_hangup, }; -- cgit v1.2.3 From 2116bda6ad937d7acb6e2316fd9e65ad6ca01d42 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 11 Mar 2013 10:05:45 +0100 Subject: um: Use tty_port in SIGWINCH handler The tty below tty_port might get destroyed by the tty layer while we hold a reference to it. So we have to carry tty_port around... Signed-off-by: Richard Weinberger --- arch/um/drivers/chan.h | 2 +- arch/um/drivers/chan_kern.c | 4 ++-- arch/um/drivers/chan_user.c | 12 ++++++------ arch/um/drivers/chan_user.h | 6 +++--- arch/um/drivers/line.c | 16 ++++++++++------ 5 files changed, 22 insertions(+), 18 deletions(-) (limited to 'arch/um') diff --git a/arch/um/drivers/chan.h b/arch/um/drivers/chan.h index 78f1b8999964..c512b0306dd4 100644 --- a/arch/um/drivers/chan.h +++ b/arch/um/drivers/chan.h @@ -37,7 +37,7 @@ extern int console_write_chan(struct chan *chan, const char *buf, extern int console_open_chan(struct line *line, struct console *co); extern void deactivate_chan(struct chan *chan, int irq); extern void reactivate_chan(struct chan *chan, int irq); -extern void chan_enable_winch(struct chan *chan, struct tty_struct *tty); +extern void chan_enable_winch(struct chan *chan, struct tty_port *port); extern int enable_chan(struct line *line); extern void close_chan(struct line *line); extern int chan_window_size(struct line *line, diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c index 15c553c239a1..80b47cb71e0a 100644 --- a/arch/um/drivers/chan_kern.c +++ b/arch/um/drivers/chan_kern.c @@ -122,10 +122,10 @@ static int open_chan(struct list_head *chans) return err; } -void chan_enable_winch(struct chan *chan, struct tty_struct *tty) +void chan_enable_winch(struct chan *chan, struct tty_port *port) { if (chan && chan->primary && chan->ops->winch) - register_winch(chan->fd, tty); + register_winch(chan->fd, port); } static void line_timer_cb(struct work_struct *work) diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c index 9be670ad23b5..3fd7c3efdb18 100644 --- a/arch/um/drivers/chan_user.c +++ b/arch/um/drivers/chan_user.c @@ -216,7 +216,7 @@ static int winch_thread(void *arg) } } -static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out, +static int winch_tramp(int fd, struct tty_port *port, int *fd_out, unsigned long *stack_out) { struct winch_data data; @@ -271,7 +271,7 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out, return err; } -void register_winch(int fd, struct tty_struct *tty) +void register_winch(int fd, struct tty_port *port) { unsigned long stack; int pid, thread, count, thread_fd = -1; @@ -281,17 +281,17 @@ void register_winch(int fd, struct tty_struct *tty) return; pid = tcgetpgrp(fd); - if (is_skas_winch(pid, fd, tty)) { - register_winch_irq(-1, fd, -1, tty, 0); + if (is_skas_winch(pid, fd, port)) { + register_winch_irq(-1, fd, -1, port, 0); return; } if (pid == -1) { - thread = winch_tramp(fd, tty, &thread_fd, &stack); + thread = winch_tramp(fd, port, &thread_fd, &stack); if (thread < 0) return; - register_winch_irq(thread_fd, fd, thread, tty, stack); + register_winch_irq(thread_fd, fd, thread, port, stack); count = write(thread_fd, &c, sizeof(c)); if (count != sizeof(c)) diff --git a/arch/um/drivers/chan_user.h b/arch/um/drivers/chan_user.h index dc693298eb8f..03f1b565c5f9 100644 --- a/arch/um/drivers/chan_user.h +++ b/arch/um/drivers/chan_user.h @@ -38,10 +38,10 @@ extern int generic_window_size(int fd, void *unused, unsigned short *rows_out, unsigned short *cols_out); extern void generic_free(void *data); -struct tty_struct; -extern void register_winch(int fd, struct tty_struct *tty); +struct tty_port; +extern void register_winch(int fd, struct tty_port *port); extern void register_winch_irq(int fd, int tty_fd, int pid, - struct tty_struct *tty, unsigned long stack); + struct tty_port *port, unsigned long stack); #define __channel_help(fn, prefix) \ __uml_help(fn, prefix "[0-9]*=\n" \ diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 232243aec70c..be541cf69fd2 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -305,7 +305,7 @@ static int line_activate(struct tty_port *port, struct tty_struct *tty) return ret; if (!line->sigio) { - chan_enable_winch(line->chan_out, tty); + chan_enable_winch(line->chan_out, port); line->sigio = 1; } @@ -603,7 +603,7 @@ struct winch { int fd; int tty_fd; int pid; - struct tty_struct *tty; + struct tty_port *port; unsigned long stack; struct work_struct work; }; @@ -657,7 +657,7 @@ static irqreturn_t winch_interrupt(int irq, void *data) goto out; } } - tty = winch->tty; + tty = tty_port_tty_get(winch->port); if (tty != NULL) { line = tty->driver_data; if (line != NULL) { @@ -665,6 +665,7 @@ static irqreturn_t winch_interrupt(int irq, void *data) &tty->winsize.ws_col); kill_pgrp(tty->pgrp, SIGWINCH, 1); } + tty_kref_put(tty); } out: if (winch->fd != -1) @@ -672,7 +673,7 @@ static irqreturn_t winch_interrupt(int irq, void *data) return IRQ_HANDLED; } -void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty, +void register_winch_irq(int fd, int tty_fd, int pid, struct tty_port *port, unsigned long stack) { struct winch *winch; @@ -687,7 +688,7 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty, .fd = fd, .tty_fd = tty_fd, .pid = pid, - .tty = tty, + .port = port, .stack = stack }); if (um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt, @@ -716,15 +717,18 @@ static void unregister_winch(struct tty_struct *tty) { struct list_head *ele, *next; struct winch *winch; + struct tty_struct *wtty; spin_lock(&winch_handler_lock); list_for_each_safe(ele, next, &winch_handlers) { winch = list_entry(ele, struct winch, list); - if (winch->tty == tty) { + wtty = tty_port_tty_get(winch->port); + if (wtty == tty) { free_winch(winch); break; } + tty_kref_put(wtty); } spin_unlock(&winch_handler_lock); } -- cgit v1.2.3 From 6aad04f21374633bd8cecf25024553d1e11a9522 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 7 Mar 2013 13:12:29 +0100 Subject: TTY: add tty_port_tty_wakeup helper It allows for cleaning up on a considerable amount of places. They did port_get, wakeup, kref_put. Now the only thing needed is to call tty_port_tty_wakeup which does exactly that. One exception is ifx6x60 where tty_wakeup was open-coded. We now call tty_wakeup properly there. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- arch/um/drivers/line.c | 8 +------- drivers/isdn/capi/capi.c | 7 +------ drivers/isdn/gigaset/interface.c | 6 +----- drivers/net/usb/hso.c | 13 ++----------- drivers/s390/char/sclp_tty.c | 9 ++------- drivers/s390/char/sclp_vt220.c | 8 +------- drivers/staging/fwserial/fwserial.c | 10 ++-------- drivers/staging/serqt_usb2/serqt_usb2.c | 7 +------ drivers/tty/ehv_bytechan.c | 6 +----- drivers/tty/hvc/hvsi.c | 7 +------ drivers/tty/nozomi.c | 6 +----- drivers/tty/serial/ifx6x60.c | 33 ++------------------------------- drivers/tty/tty_port.c | 16 ++++++++++++++++ drivers/usb/class/cdc-acm.c | 7 +------ drivers/usb/serial/digi_acceleport.c | 17 +++-------------- drivers/usb/serial/io_edgeport.c | 28 +++++----------------------- drivers/usb/serial/keyspan_pda.c | 6 ++---- drivers/usb/serial/mos7720.c | 8 ++------ drivers/usb/serial/mos7840.c | 7 ++----- drivers/usb/serial/ti_usb_3410_5052.c | 7 ++----- drivers/usb/serial/usb-serial.c | 10 +--------- include/linux/tty.h | 1 + 22 files changed, 51 insertions(+), 176 deletions(-) (limited to 'arch/um') diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index f1b38571f94e..cc206eda245c 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -248,7 +248,6 @@ static irqreturn_t line_write_interrupt(int irq, void *data) { struct chan *chan = data; struct line *line = chan->line; - struct tty_struct *tty; int err; /* @@ -267,12 +266,7 @@ static irqreturn_t line_write_interrupt(int irq, void *data) } spin_unlock(&line->lock); - tty = tty_port_tty_get(&line->port); - if (tty == NULL) - return IRQ_NONE; - - tty_wakeup(tty); - tty_kref_put(tty); + tty_port_tty_wakeup(&line->port); return IRQ_HANDLED; } diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 89562a845f6a..ac6f72b455d1 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -569,7 +569,6 @@ static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) { struct capidev *cdev = ap->private; #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE - struct tty_struct *tty; struct capiminor *mp; u16 datahandle; struct capincci *np; @@ -627,11 +626,7 @@ static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb) CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 2)); kfree_skb(skb); capiminor_del_ack(mp, datahandle); - tty = tty_port_tty_get(&mp->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } + tty_port_tty_wakeup(&mp->port); handle_minor_send(mp); } else { diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c index e2b539675b66..600c79b030cd 100644 --- a/drivers/isdn/gigaset/interface.c +++ b/drivers/isdn/gigaset/interface.c @@ -487,12 +487,8 @@ static const struct tty_operations if_ops = { static void if_wake(unsigned long data) { struct cardstate *cs = (struct cardstate *)data; - struct tty_struct *tty = tty_port_tty_get(&cs->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } + tty_port_tty_wakeup(&cs->port); } /*** interface to common ***/ diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index e2dd3249b6bd..a7714b4f29ad 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -1925,7 +1925,6 @@ static void hso_std_serial_write_bulk_callback(struct urb *urb) { struct hso_serial *serial = urb->context; int status = urb->status; - struct tty_struct *tty; /* sanity check */ if (!serial) { @@ -1941,11 +1940,7 @@ static void hso_std_serial_write_bulk_callback(struct urb *urb) return; } hso_put_activity(serial->parent); - tty = tty_port_tty_get(&serial->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } + tty_port_tty_wakeup(&serial->port); hso_kick_transmit(serial); D1(" "); @@ -2008,12 +2003,8 @@ static void ctrl_callback(struct urb *urb) put_rxbuf_data_and_resubmit_ctrl_urb(serial); spin_unlock(&serial->serial_lock); } else { - struct tty_struct *tty = tty_port_tty_get(&serial->port); hso_put_activity(serial->parent); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } + tty_port_tty_wakeup(&serial->port); /* response to a write command */ hso_kick_transmit(serial); } diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c index 14b4cb8abcc8..7ed7a5987816 100644 --- a/drivers/s390/char/sclp_tty.c +++ b/drivers/s390/char/sclp_tty.c @@ -107,7 +107,6 @@ sclp_tty_write_room (struct tty_struct *tty) static void sclp_ttybuf_callback(struct sclp_buffer *buffer, int rc) { - struct tty_struct *tty; unsigned long flags; void *page; @@ -125,12 +124,8 @@ sclp_ttybuf_callback(struct sclp_buffer *buffer, int rc) struct sclp_buffer, list); spin_unlock_irqrestore(&sclp_tty_lock, flags); } while (buffer && sclp_emit_buffer(buffer, sclp_ttybuf_callback)); - /* check if the tty needs a wake up call */ - tty = tty_port_tty_get(&sclp_port); - if (tty != NULL) { - tty_wakeup(tty); - tty_kref_put(tty); - } + + tty_port_tty_wakeup(&sclp_port); } static inline void diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c index 6c92f62623be..5aaaa2ec8df4 100644 --- a/drivers/s390/char/sclp_vt220.c +++ b/drivers/s390/char/sclp_vt220.c @@ -114,7 +114,6 @@ static struct sclp_register sclp_vt220_register = { static void sclp_vt220_process_queue(struct sclp_vt220_request *request) { - struct tty_struct *tty; unsigned long flags; void *page; @@ -139,12 +138,7 @@ sclp_vt220_process_queue(struct sclp_vt220_request *request) } while (__sclp_vt220_emit(request)); if (request == NULL && sclp_vt220_flush_later) sclp_vt220_emit_current(); - /* Check if the tty needs a wake up call */ - tty = tty_port_tty_get(&sclp_vt220_port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } + tty_port_tty_wakeup(&sclp_vt220_port); } #define SCLP_BUFFER_MAX_RETRY 1 diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c index 5a6fb44f38a8..5c64e3a35b28 100644 --- a/drivers/staging/fwserial/fwserial.c +++ b/drivers/staging/fwserial/fwserial.c @@ -744,7 +744,6 @@ static void fwtty_tx_complete(struct fw_card *card, int rcode, struct fwtty_transaction *txn) { struct fwtty_port *port = txn->port; - struct tty_struct *tty; int len; fwtty_dbg(port, "rcode: %d", rcode); @@ -769,13 +768,8 @@ static void fwtty_tx_complete(struct fw_card *card, int rcode, port->stats.dropped += txn->dma_pended.len; } - if (len < WAKEUP_CHARS) { - tty = tty_port_tty_get(&port->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } - } + if (len < WAKEUP_CHARS) + tty_port_tty_wakeup(&port->port); } static int fwtty_tx(struct fwtty_port *port, bool drain) diff --git a/drivers/staging/serqt_usb2/serqt_usb2.c b/drivers/staging/serqt_usb2/serqt_usb2.c index b1bb1a6abe81..8a6e5ea476e1 100644 --- a/drivers/staging/serqt_usb2/serqt_usb2.c +++ b/drivers/staging/serqt_usb2/serqt_usb2.c @@ -264,7 +264,6 @@ static void ProcessRxChar(struct usb_serial_port *port, unsigned char data) static void qt_write_bulk_callback(struct urb *urb) { - struct tty_struct *tty; int status; struct quatech_port *quatech_port; @@ -278,11 +277,7 @@ static void qt_write_bulk_callback(struct urb *urb) quatech_port = urb->context; - tty = tty_port_tty_get(&quatech_port->port->port); - - if (tty) - tty_wakeup(tty); - tty_kref_put(tty); + tty_port_tty_wakeup(&quatech_port->port->port); } static void qt_interrupt_callback(struct urb *urb) diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c index ed92622b8949..6d0c27cd03da 100644 --- a/drivers/tty/ehv_bytechan.c +++ b/drivers/tty/ehv_bytechan.c @@ -472,13 +472,9 @@ static void ehv_bc_tx_dequeue(struct ehv_bc_data *bc) static irqreturn_t ehv_bc_tty_tx_isr(int irq, void *data) { struct ehv_bc_data *bc = data; - struct tty_struct *ttys = tty_port_tty_get(&bc->port); ehv_bc_tx_dequeue(bc); - if (ttys) { - tty_wakeup(ttys); - tty_kref_put(ttys); - } + tty_port_tty_wakeup(&bc->port); return IRQ_HANDLED; } diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c index ef95a154854a..41901997c0d6 100644 --- a/drivers/tty/hvc/hvsi.c +++ b/drivers/tty/hvc/hvsi.c @@ -861,7 +861,6 @@ static void hvsi_write_worker(struct work_struct *work) { struct hvsi_struct *hp = container_of(work, struct hvsi_struct, writer.work); - struct tty_struct *tty; unsigned long flags; #ifdef DEBUG static long start_j = 0; @@ -895,11 +894,7 @@ static void hvsi_write_worker(struct work_struct *work) start_j = 0; #endif /* DEBUG */ wake_up_all(&hp->emptyq); - tty = tty_port_tty_get(&hp->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } + tty_port_tty_wakeup(&hp->port); } out: diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c index 2dff19796157..2e5bbdc09e1c 100644 --- a/drivers/tty/nozomi.c +++ b/drivers/tty/nozomi.c @@ -791,7 +791,6 @@ static int send_data(enum port_type index, struct nozomi *dc) const u8 toggle = port->toggle_ul; void __iomem *addr = port->ul_addr[toggle]; const u32 ul_size = port->ul_size[toggle]; - struct tty_struct *tty = tty_port_tty_get(&port->port); /* Get data from tty and place in buf for now */ size = kfifo_out(&port->fifo_ul, dc->send_buf, @@ -799,7 +798,6 @@ static int send_data(enum port_type index, struct nozomi *dc) if (size == 0) { DBG4("No more data to send, disable link:"); - tty_kref_put(tty); return 0; } @@ -809,10 +807,8 @@ static int send_data(enum port_type index, struct nozomi *dc) write_mem32(addr, (u32 *) &size, 4); write_mem32(addr + 4, (u32 *) dc->send_buf, size); - if (tty) - tty_wakeup(tty); + tty_port_tty_wakeup(&port->port); - tty_kref_put(tty); return 1; } diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index 68d7ce997ede..d723d4193b90 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -442,25 +442,6 @@ static void ifx_spi_setup_spi_header(unsigned char *txbuffer, int tx_count, txbuffer[1] |= (more << IFX_SPI_MORE_BIT) & IFX_SPI_MORE_MASK; } -/** - * ifx_spi_wakeup_serial - SPI space made - * @port_data: our SPI device - * - * We have emptied the FIFO enough that we want to get more data - * queued into it. Poke the line discipline via tty_wakeup so that - * it will feed us more bits - */ -static void ifx_spi_wakeup_serial(struct ifx_spi_device *ifx_dev) -{ - struct tty_struct *tty; - - tty = tty_port_tty_get(&ifx_dev->tty_port); - if (!tty) - return; - tty_wakeup(tty); - tty_kref_put(tty); -} - /** * ifx_spi_prepare_tx_buffer - prepare transmit frame * @ifx_dev: our SPI device @@ -506,7 +487,7 @@ static int ifx_spi_prepare_tx_buffer(struct ifx_spi_device *ifx_dev) tx_count += temp_count; if (temp_count == queue_length) /* poke port to get more data */ - ifx_spi_wakeup_serial(ifx_dev); + tty_port_tty_wakeup(&ifx_dev->tty_port); else /* more data in port, use next SPI message */ ifx_dev->spi_more = 1; } @@ -683,8 +664,6 @@ static void ifx_spi_insert_flip_string(struct ifx_spi_device *ifx_dev, static void ifx_spi_complete(void *ctx) { struct ifx_spi_device *ifx_dev = ctx; - struct tty_struct *tty; - struct tty_ldisc *ldisc = NULL; int length; int actual_length; unsigned char more; @@ -762,15 +741,7 @@ complete_exit: */ ifx_spi_power_state_clear(ifx_dev, IFX_SPI_POWER_DATA_PENDING); - tty = tty_port_tty_get(&ifx_dev->tty_port); - if (tty) { - ldisc = tty_ldisc_ref(tty); - if (ldisc) { - ldisc->ops->write_wakeup(tty); - tty_ldisc_deref(ldisc); - } - tty_kref_put(tty); - } + tty_port_tty_wakeup(&ifx_dev->tty_port); } } } diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index b7ff59d3db88..8bb757c62ee2 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -232,6 +232,22 @@ void tty_port_hangup(struct tty_port *port) } EXPORT_SYMBOL(tty_port_hangup); +/** + * tty_port_tty_wakeup - helper to wake up a tty + * + * @port: tty port + */ +void tty_port_tty_wakeup(struct tty_port *port) +{ + struct tty_struct *tty = tty_port_tty_get(port); + + if (tty) { + tty_wakeup(tty); + tty_kref_put(tty); + } +} +EXPORT_SYMBOL_GPL(tty_port_tty_wakeup); + /** * tty_port_carrier_raised - carrier raised check * @port: tty port diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 8ac25adf31b4..755766e4b756 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -475,15 +475,10 @@ static void acm_write_bulk(struct urb *urb) static void acm_softint(struct work_struct *work) { struct acm *acm = container_of(work, struct acm, work); - struct tty_struct *tty; dev_vdbg(&acm->data->dev, "%s\n", __func__); - tty = tty_port_tty_get(&acm->port); - if (!tty) - return; - tty_wakeup(tty); - tty_kref_put(tty); + tty_port_tty_wakeup(&acm->port); } /* diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index ebe45fa0ed50..31191581060c 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -210,7 +210,6 @@ struct digi_port { /* Local Function Declarations */ -static void digi_wakeup_write(struct usb_serial_port *port); static void digi_wakeup_write_lock(struct work_struct *work); static int digi_write_oob_command(struct usb_serial_port *port, unsigned char *buf, int count, int interruptible); @@ -374,20 +373,10 @@ static void digi_wakeup_write_lock(struct work_struct *work) unsigned long flags; spin_lock_irqsave(&priv->dp_port_lock, flags); - digi_wakeup_write(port); + tty_port_tty_wakeup(&port->port); spin_unlock_irqrestore(&priv->dp_port_lock, flags); } -static void digi_wakeup_write(struct usb_serial_port *port) -{ - struct tty_struct *tty = tty_port_tty_get(&port->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } -} - - /* * Digi Write OOB Command * @@ -1044,7 +1033,7 @@ static void digi_write_bulk_callback(struct urb *urb) } } /* wake up processes sleeping on writes immediately */ - digi_wakeup_write(port); + tty_port_tty_wakeup(&port->port); /* also queue up a wakeup at scheduler time, in case we */ /* lost the race in write_chan(). */ schedule_work(&priv->dp_wakeup_work); @@ -1522,7 +1511,7 @@ static int digi_read_oob_callback(struct urb *urb) /* port must be open to use tty struct */ if (rts) { tty->hw_stopped = 0; - digi_wakeup_write(port); + tty_port_tty_wakeup(&port->port); } } else { priv->dp_modem_signals &= ~TIOCM_CTS; diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index b00e5cbf741f..44e5208f7c61 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -565,7 +565,6 @@ static void edge_interrupt_callback(struct urb *urb) struct device *dev; struct edgeport_port *edge_port; struct usb_serial_port *port; - struct tty_struct *tty; unsigned char *data = urb->transfer_buffer; int length = urb->actual_length; int bytes_avail; @@ -644,12 +643,7 @@ static void edge_interrupt_callback(struct urb *urb) /* tell the tty driver that something has changed */ - tty = tty_port_tty_get( - &edge_port->port->port); - if (tty) { - tty_wakeup(tty); - tty_kref_put(tty); - } + tty_port_tty_wakeup(&edge_port->port->port); /* Since we have more credit, check if more data can be sent */ send_more_port_data(edge_serial, @@ -738,7 +732,6 @@ static void edge_bulk_in_callback(struct urb *urb) static void edge_bulk_out_data_callback(struct urb *urb) { struct edgeport_port *edge_port = urb->context; - struct tty_struct *tty; int status = urb->status; if (status) { @@ -747,14 +740,8 @@ static void edge_bulk_out_data_callback(struct urb *urb) __func__, status); } - tty = tty_port_tty_get(&edge_port->port->port); - - if (tty && edge_port->open) { - /* let the tty driver wakeup if it has a special - write_wakeup function */ - tty_wakeup(tty); - } - tty_kref_put(tty); + if (edge_port->open) + tty_port_tty_wakeup(&edge_port->port->port); /* Release the Write URB */ edge_port->write_in_progress = false; @@ -773,7 +760,6 @@ static void edge_bulk_out_data_callback(struct urb *urb) static void edge_bulk_out_cmd_callback(struct urb *urb) { struct edgeport_port *edge_port = urb->context; - struct tty_struct *tty; int status = urb->status; atomic_dec(&CmdUrbs); @@ -794,13 +780,9 @@ static void edge_bulk_out_cmd_callback(struct urb *urb) return; } - /* Get pointer to tty */ - tty = tty_port_tty_get(&edge_port->port->port); - /* tell the tty driver that something has changed */ - if (tty && edge_port->open) - tty_wakeup(tty); - tty_kref_put(tty); + if (edge_port->open) + tty_port_tty_wakeup(&edge_port->port->port); /* we have completed the command */ edge_port->commandPending = false; diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index 3b17d5d13dc8..2230223978ca 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -104,10 +104,8 @@ static void keyspan_pda_wakeup_write(struct work_struct *work) struct keyspan_pda_private *priv = container_of(work, struct keyspan_pda_private, wakeup_work); struct usb_serial_port *port = priv->port; - struct tty_struct *tty = tty_port_tty_get(&port->port); - if (tty) - tty_wakeup(tty); - tty_kref_put(tty); + + tty_port_tty_wakeup(&port->port); } static void keyspan_pda_request_unthrottle(struct work_struct *work) diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index e0ebec3b5d6a..e956eae198fd 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -932,7 +932,6 @@ static void mos7720_bulk_in_callback(struct urb *urb) static void mos7720_bulk_out_data_callback(struct urb *urb) { struct moschip_port *mos7720_port; - struct tty_struct *tty; int status = urb->status; if (status) { @@ -946,11 +945,8 @@ static void mos7720_bulk_out_data_callback(struct urb *urb) return ; } - tty = tty_port_tty_get(&mos7720_port->port->port); - - if (tty && mos7720_port->open) - tty_wakeup(tty); - tty_kref_put(tty); + if (mos7720_port->open) + tty_port_tty_wakeup(&mos7720_port->port->port); } /* diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 809fb329eca5..08284d28e84b 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -814,7 +814,6 @@ static void mos7840_bulk_out_data_callback(struct urb *urb) { struct moschip_port *mos7840_port; struct usb_serial_port *port; - struct tty_struct *tty; int status = urb->status; int i; @@ -837,10 +836,8 @@ static void mos7840_bulk_out_data_callback(struct urb *urb) if (mos7840_port_paranoia_check(port, __func__)) return; - tty = tty_port_tty_get(&port->port); - if (tty && mos7840_port->open) - tty_wakeup(tty); - tty_kref_put(tty); + if (mos7840_port->open) + tty_port_tty_wakeup(&port->port); } diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 39cb9b807c3c..437f2d579cde 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -1227,7 +1227,6 @@ static void ti_send(struct ti_port *tport) { int count, result; struct usb_serial_port *port = tport->tp_port; - struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */ unsigned long flags; spin_lock_irqsave(&tport->tp_lock, flags); @@ -1268,14 +1267,12 @@ static void ti_send(struct ti_port *tport) } /* more room in the buffer for new writes, wakeup */ - if (tty) - tty_wakeup(tty); - tty_kref_put(tty); + tty_port_tty_wakeup(&port->port); + wake_up_interruptible(&tport->tp_write_wait); return; unlock: spin_unlock_irqrestore(&tport->tp_lock, flags); - tty_kref_put(tty); return; } diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index a19ed74d770d..2df84845bafb 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -541,16 +541,8 @@ static void usb_serial_port_work(struct work_struct *work) { struct usb_serial_port *port = container_of(work, struct usb_serial_port, work); - struct tty_struct *tty; - tty = tty_port_tty_get(&port->port); - if (!tty) - return; - - dev_dbg(tty->dev, "%s - port %d\n", __func__, port->number); - - tty_wakeup(tty); - tty_kref_put(tty); + tty_port_tty_wakeup(&port->port); } static void kill_traffic(struct usb_serial_port *port) diff --git a/include/linux/tty.h b/include/linux/tty.h index 63b62865c8e9..b6e890a87eb1 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -534,6 +534,7 @@ extern int tty_port_carrier_raised(struct tty_port *port); extern void tty_port_raise_dtr_rts(struct tty_port *port); extern void tty_port_lower_dtr_rts(struct tty_port *port); extern void tty_port_hangup(struct tty_port *port); +extern void tty_port_tty_wakeup(struct tty_port *port); extern int tty_port_block_til_ready(struct tty_port *port, struct tty_struct *tty, struct file *filp); extern int tty_port_close_start(struct tty_port *port, -- cgit v1.2.3 From aa27a094e2c2e0cc59914e56113b860f524f4479 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Thu, 7 Mar 2013 13:12:30 +0100 Subject: TTY: add tty_port_tty_hangup helper It allows for cleaning up on a considerable amount of places. They did port_get, hangup, kref_put. Now the only thing needed is to call tty_port_tty_hangup which does exactly that. And they can also decide whether to consider CLOCAL or completely ignore that. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- arch/um/drivers/chan_kern.c | 6 +----- drivers/mmc/card/sdio_uart.c | 13 ++--------- drivers/net/usb/hso.c | 7 +----- drivers/tty/cyclades.c | 10 ++------- drivers/tty/moxa.c | 19 ++++++---------- drivers/tty/n_gsm.c | 6 +----- drivers/tty/nozomi.c | 9 +++----- drivers/tty/rocket.c | 7 +----- drivers/tty/serial/ifx6x60.c | 21 ++---------------- drivers/tty/tty_port.c | 17 +++++++++++++++ drivers/usb/class/cdc-acm.c | 24 ++++++--------------- drivers/usb/serial/keyspan.c | 43 +++++++++---------------------------- drivers/usb/serial/option.c | 9 ++------ drivers/usb/serial/sierra.c | 8 ++----- include/linux/tty.h | 1 + net/irda/ircomm/ircomm_tty_attach.c | 6 +----- 16 files changed, 58 insertions(+), 148 deletions(-) (limited to 'arch/um') diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c index 15c553c239a1..bf42825ba54f 100644 --- a/arch/um/drivers/chan_kern.c +++ b/arch/um/drivers/chan_kern.c @@ -568,11 +568,7 @@ void chan_interrupt(struct line *line, int irq) reactivate_fd(chan->fd, irq); if (err == -EIO) { if (chan->primary) { - struct tty_struct *tty = tty_port_tty_get(&line->port); - if (tty != NULL) { - tty_hangup(tty); - tty_kref_put(tty); - } + tty_port_tty_hangup(&line->port, false); if (line->chan_out != chan) close_one_chan(line->chan_out, 1); } diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c index c931dfe6a59c..f093cea0d060 100644 --- a/drivers/mmc/card/sdio_uart.c +++ b/drivers/mmc/card/sdio_uart.c @@ -134,7 +134,6 @@ static void sdio_uart_port_put(struct sdio_uart_port *port) static void sdio_uart_port_remove(struct sdio_uart_port *port) { struct sdio_func *func; - struct tty_struct *tty; BUG_ON(sdio_uart_table[port->index] != port); @@ -155,12 +154,8 @@ static void sdio_uart_port_remove(struct sdio_uart_port *port) sdio_claim_host(func); port->func = NULL; mutex_unlock(&port->func_lock); - tty = tty_port_tty_get(&port->port); /* tty_hangup is async so is this safe as is ?? */ - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } + tty_port_tty_hangup(&port->port, false); mutex_unlock(&port->port.mutex); sdio_release_irq(func); sdio_disable_func(func); @@ -492,11 +487,7 @@ static void sdio_uart_check_modem_status(struct sdio_uart_port *port) wake_up_interruptible(&port->port.open_wait); else { /* DCD drop - hang up if tty attached */ - tty = tty_port_tty_get(&port->port); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } + tty_port_tty_hangup(&port->port, false); } } if (status & UART_MSR_DCTS) { diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c index a7714b4f29ad..cba1d46e672e 100644 --- a/drivers/net/usb/hso.c +++ b/drivers/net/usb/hso.c @@ -3124,18 +3124,13 @@ static void hso_serial_ref_free(struct kref *ref) static void hso_free_interface(struct usb_interface *interface) { struct hso_serial *hso_dev; - struct tty_struct *tty; int i; for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) { if (serial_table[i] && (serial_table[i]->interface == interface)) { hso_dev = dev2ser(serial_table[i]); - tty = tty_port_tty_get(&hso_dev->port); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } + tty_port_tty_hangup(&hso_dev->port, false); mutex_lock(&hso_dev->parent->mutex); hso_dev->parent->usb_gone = 1; mutex_unlock(&hso_dev->parent->mutex); diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c index 345bd0e0884e..33f83fee9fae 100644 --- a/drivers/tty/cyclades.c +++ b/drivers/tty/cyclades.c @@ -1124,14 +1124,8 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo) readl(&info->u.cyz.ch_ctrl->rs_status); if (dcd & C_RS_DCD) wake_up_interruptible(&info->port.open_wait); - else { - struct tty_struct *tty; - tty = tty_port_tty_get(&info->port); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } - } + else + tty_port_tty_hangup(&info->port, false); } break; case C_CM_MCTS: diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c index adeac255e526..1deaca4674e4 100644 --- a/drivers/tty/moxa.c +++ b/drivers/tty/moxa.c @@ -913,16 +913,12 @@ static void moxa_board_deinit(struct moxa_board_conf *brd) /* pci hot-un-plug support */ for (a = 0; a < brd->numPorts; a++) - if (brd->ports[a].port.flags & ASYNC_INITIALIZED) { - struct tty_struct *tty = tty_port_tty_get( - &brd->ports[a].port); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } - } + if (brd->ports[a].port.flags & ASYNC_INITIALIZED) + tty_port_tty_hangup(&brd->ports[a].port, false); + for (a = 0; a < MAX_PORTS_PER_BOARD; a++) tty_port_destroy(&brd->ports[a].port); + while (1) { opened = 0; for (a = 0; a < brd->numPorts; a++) @@ -1365,7 +1361,6 @@ static void moxa_hangup(struct tty_struct *tty) static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) { - struct tty_struct *tty; unsigned long flags; dcd = !!dcd; @@ -1373,10 +1368,8 @@ static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) if (dcd != p->DCDState) { p->DCDState = dcd; spin_unlock_irqrestore(&p->port.lock, flags); - tty = tty_port_tty_get(&p->port); - if (tty && !C_CLOCAL(tty) && !dcd) - tty_hangup(tty); - tty_kref_put(tty); + if (!dcd) + tty_port_tty_hangup(&p->port, true); } else spin_unlock_irqrestore(&p->port.lock, flags); diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c index 4a43ef5d7962..74d9a0258d7c 100644 --- a/drivers/tty/n_gsm.c +++ b/drivers/tty/n_gsm.c @@ -1418,11 +1418,7 @@ static void gsm_dlci_close(struct gsm_dlci *dlci) pr_debug("DLCI %d goes closed.\n", dlci->addr); dlci->state = DLCI_CLOSED; if (dlci->addr != 0) { - struct tty_struct *tty = tty_port_tty_get(&dlci->port); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } + tty_port_tty_hangup(&dlci->port, false); kfifo_reset(dlci->fifo); } else dlci->gsm->dead = 1; diff --git a/drivers/tty/nozomi.c b/drivers/tty/nozomi.c index 2e5bbdc09e1c..d6080c3831ef 100644 --- a/drivers/tty/nozomi.c +++ b/drivers/tty/nozomi.c @@ -1501,12 +1501,9 @@ static void tty_exit(struct nozomi *dc) DBG1(" "); - for (i = 0; i < MAX_PORT; ++i) { - struct tty_struct *tty = tty_port_tty_get(&dc->port[i].port); - if (tty && list_empty(&tty->hangup_work.entry)) - tty_hangup(tty); - tty_kref_put(tty); - } + for (i = 0; i < MAX_PORT; ++i) + tty_port_tty_hangup(&dc->port[i].port, false); + /* Racy below - surely should wait for scheduled work to be done or complete off a hangup method ? */ while (dc->open_ttys) diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c index 1d270034bfc3..bbffd7a431e9 100644 --- a/drivers/tty/rocket.c +++ b/drivers/tty/rocket.c @@ -521,15 +521,10 @@ static void rp_handle_port(struct r_port *info) (ChanStatus & CD_ACT) ? "on" : "off"); #endif if (!(ChanStatus & CD_ACT) && info->cd_status) { - struct tty_struct *tty; #ifdef ROCKET_DEBUG_HANGUP printk(KERN_INFO "CD drop, calling hangup.\n"); #endif - tty = tty_port_tty_get(&info->port); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } + tty_port_tty_hangup(&info->port, false); } info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0; wake_up_interruptible(&info->port.open_wait); diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c index d723d4193b90..2c77fed31a72 100644 --- a/drivers/tty/serial/ifx6x60.c +++ b/drivers/tty/serial/ifx6x60.c @@ -269,23 +269,6 @@ static void mrdy_assert(struct ifx_spi_device *ifx_dev) mrdy_set_high(ifx_dev); } -/** - * ifx_spi_hangup - hang up an IFX device - * @ifx_dev: our SPI device - * - * Hang up the tty attached to the IFX device if one is currently - * open. If not take no action - */ -static void ifx_spi_ttyhangup(struct ifx_spi_device *ifx_dev) -{ - struct tty_port *pport = &ifx_dev->tty_port; - struct tty_struct *tty = tty_port_tty_get(pport); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } -} - /** * ifx_spi_timeout - SPI timeout * @arg: our SPI device @@ -298,7 +281,7 @@ static void ifx_spi_timeout(unsigned long arg) struct ifx_spi_device *ifx_dev = (struct ifx_spi_device *)arg; dev_warn(&ifx_dev->spi_dev->dev, "*** SPI Timeout ***"); - ifx_spi_ttyhangup(ifx_dev); + tty_port_tty_hangup(&ifx_dev->tty_port, false); mrdy_set_low(ifx_dev); clear_bit(IFX_SPI_STATE_TIMER_PENDING, &ifx_dev->flags); } @@ -933,7 +916,7 @@ static irqreturn_t ifx_spi_reset_interrupt(int irq, void *dev) set_bit(MR_INPROGRESS, &ifx_dev->mdm_reset_state); if (!solreset) { /* unsolicited reset */ - ifx_spi_ttyhangup(ifx_dev); + tty_port_tty_hangup(&ifx_dev->tty_port, false); } } else { /* exited reset */ diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index 8bb757c62ee2..7f38eeaafac3 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -232,6 +232,23 @@ void tty_port_hangup(struct tty_port *port) } EXPORT_SYMBOL(tty_port_hangup); +/** + * tty_port_tty_hangup - helper to hang up a tty + * + * @port: tty port + * @check_clocal: hang only ttys with CLOCAL unset? + */ +void tty_port_tty_hangup(struct tty_port *port, bool check_clocal) +{ + struct tty_struct *tty = tty_port_tty_get(port); + + if (tty && (!check_clocal || !C_CLOCAL(tty))) { + tty_hangup(tty); + tty_kref_put(tty); + } +} +EXPORT_SYMBOL_GPL(tty_port_tty_hangup); + /** * tty_port_tty_wakeup - helper to wake up a tty * diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 755766e4b756..27a18743275e 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -292,7 +292,6 @@ static void acm_ctrl_irq(struct urb *urb) { struct acm *acm = urb->context; struct usb_cdc_notification *dr = urb->transfer_buffer; - struct tty_struct *tty; unsigned char *data; int newctrl; int retval; @@ -327,17 +326,12 @@ static void acm_ctrl_irq(struct urb *urb) break; case USB_CDC_NOTIFY_SERIAL_STATE: - tty = tty_port_tty_get(&acm->port); newctrl = get_unaligned_le16(data); - if (tty) { - if (!acm->clocal && - (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { - dev_dbg(&acm->control->dev, - "%s - calling hangup\n", __func__); - tty_hangup(tty); - } - tty_kref_put(tty); + if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { + dev_dbg(&acm->control->dev, "%s - calling hangup\n", + __func__); + tty_port_tty_hangup(&acm->port, false); } acm->ctrlin = newctrl; @@ -1498,15 +1492,9 @@ err_out: static int acm_reset_resume(struct usb_interface *intf) { struct acm *acm = usb_get_intfdata(intf); - struct tty_struct *tty; - if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) { - tty = tty_port_tty_get(&acm->port); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } - } + if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) + tty_port_tty_hangup(&acm->port, false); return acm_resume(intf); } diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c index 1fd1935c8316..b011478d2e5f 100644 --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -378,7 +378,6 @@ static void usa26_instat_callback(struct urb *urb) struct usb_serial *serial; struct usb_serial_port *port; struct keyspan_port_private *p_priv; - struct tty_struct *tty; int old_dcd_state, err; int status = urb->status; @@ -421,12 +420,8 @@ static void usa26_instat_callback(struct urb *urb) p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0); p_priv->ri_state = ((msg->ri) ? 1 : 0); - if (old_dcd_state != p_priv->dcd_state) { - tty = tty_port_tty_get(&port->port); - if (tty && !C_CLOCAL(tty)) - tty_hangup(tty); - tty_kref_put(tty); - } + if (old_dcd_state != p_priv->dcd_state) + tty_port_tty_hangup(&port->port, true); /* Resubmit urb so we continue receiving */ err = usb_submit_urb(urb, GFP_ATOMIC); @@ -510,7 +505,6 @@ static void usa28_instat_callback(struct urb *urb) struct usb_serial *serial; struct usb_serial_port *port; struct keyspan_port_private *p_priv; - struct tty_struct *tty; int old_dcd_state; int status = urb->status; @@ -551,12 +545,8 @@ static void usa28_instat_callback(struct urb *urb) p_priv->dcd_state = ((msg->dcd) ? 1 : 0); p_priv->ri_state = ((msg->ri) ? 1 : 0); - if (old_dcd_state != p_priv->dcd_state && old_dcd_state) { - tty = tty_port_tty_get(&port->port); - if (tty && !C_CLOCAL(tty)) - tty_hangup(tty); - tty_kref_put(tty); - } + if (old_dcd_state != p_priv->dcd_state && old_dcd_state) + tty_port_tty_hangup(&port->port, true); /* Resubmit urb so we continue receiving */ err = usb_submit_urb(urb, GFP_ATOMIC); @@ -642,12 +632,8 @@ static void usa49_instat_callback(struct urb *urb) p_priv->dcd_state = ((msg->dcd) ? 1 : 0); p_priv->ri_state = ((msg->ri) ? 1 : 0); - if (old_dcd_state != p_priv->dcd_state && old_dcd_state) { - struct tty_struct *tty = tty_port_tty_get(&port->port); - if (tty && !C_CLOCAL(tty)) - tty_hangup(tty); - tty_kref_put(tty); - } + if (old_dcd_state != p_priv->dcd_state && old_dcd_state) + tty_port_tty_hangup(&port->port, true); /* Resubmit urb so we continue receiving */ err = usb_submit_urb(urb, GFP_ATOMIC); @@ -851,7 +837,6 @@ static void usa90_instat_callback(struct urb *urb) struct usb_serial *serial; struct usb_serial_port *port; struct keyspan_port_private *p_priv; - struct tty_struct *tty; int old_dcd_state, err; int status = urb->status; @@ -880,12 +865,8 @@ static void usa90_instat_callback(struct urb *urb) p_priv->dcd_state = ((msg->dcd) ? 1 : 0); p_priv->ri_state = ((msg->ri) ? 1 : 0); - if (old_dcd_state != p_priv->dcd_state && old_dcd_state) { - tty = tty_port_tty_get(&port->port); - if (tty && !C_CLOCAL(tty)) - tty_hangup(tty); - tty_kref_put(tty); - } + if (old_dcd_state != p_priv->dcd_state && old_dcd_state) + tty_port_tty_hangup(&port->port, true); /* Resubmit urb so we continue receiving */ err = usb_submit_urb(urb, GFP_ATOMIC); @@ -953,12 +934,8 @@ static void usa67_instat_callback(struct urb *urb) p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0); p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0); - if (old_dcd_state != p_priv->dcd_state && old_dcd_state) { - struct tty_struct *tty = tty_port_tty_get(&port->port); - if (tty && !C_CLOCAL(tty)) - tty_hangup(tty); - tty_kref_put(tty); - } + if (old_dcd_state != p_priv->dcd_state && old_dcd_state) + tty_port_tty_hangup(&port->port, true); /* Resubmit urb so we continue receiving */ err = usb_submit_urb(urb, GFP_ATOMIC); diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index f7d339d8187b..602d1f389a3b 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -1532,13 +1532,8 @@ static void option_instat_callback(struct urb *urb) portdata->dsr_state = ((signals & 0x02) ? 1 : 0); portdata->ri_state = ((signals & 0x08) ? 1 : 0); - if (old_dcd_state && !portdata->dcd_state) { - struct tty_struct *tty = - tty_port_tty_get(&port->port); - if (tty && !C_CLOCAL(tty)) - tty_hangup(tty); - tty_kref_put(tty); - } + if (old_dcd_state && !portdata->dcd_state) + tty_port_tty_hangup(&port->port, true); } else { dev_dbg(dev, "%s: type %x req %x\n", __func__, req_pkt->bRequestType, req_pkt->bRequest); diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index c13f6e747748..d66148a17fe3 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -628,7 +628,6 @@ static void sierra_instat_callback(struct urb *urb) unsigned char signals = *((unsigned char *) urb->transfer_buffer + sizeof(struct usb_ctrlrequest)); - struct tty_struct *tty; dev_dbg(&port->dev, "%s: signal x%x\n", __func__, signals); @@ -639,11 +638,8 @@ static void sierra_instat_callback(struct urb *urb) portdata->dsr_state = ((signals & 0x02) ? 1 : 0); portdata->ri_state = ((signals & 0x08) ? 1 : 0); - tty = tty_port_tty_get(&port->port); - if (tty && !C_CLOCAL(tty) && - old_dcd_state && !portdata->dcd_state) - tty_hangup(tty); - tty_kref_put(tty); + if (old_dcd_state && !portdata->dcd_state) + tty_port_tty_hangup(&port->port, true); } else { dev_dbg(&port->dev, "%s: type %x req %x\n", __func__, req_pkt->bRequestType, diff --git a/include/linux/tty.h b/include/linux/tty.h index b6e890a87eb1..d3548f871968 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -534,6 +534,7 @@ extern int tty_port_carrier_raised(struct tty_port *port); extern void tty_port_raise_dtr_rts(struct tty_port *port); extern void tty_port_lower_dtr_rts(struct tty_port *port); extern void tty_port_hangup(struct tty_port *port); +extern void tty_port_tty_hangup(struct tty_port *port, bool check_clocal); extern void tty_port_tty_wakeup(struct tty_port *port); extern int tty_port_block_til_ready(struct tty_port *port, struct tty_struct *tty, struct file *filp); diff --git a/net/irda/ircomm/ircomm_tty_attach.c b/net/irda/ircomm/ircomm_tty_attach.c index edab393e0c82..a2a508f5f268 100644 --- a/net/irda/ircomm/ircomm_tty_attach.c +++ b/net/irda/ircomm/ircomm_tty_attach.c @@ -997,12 +997,8 @@ static int ircomm_tty_state_ready(struct ircomm_tty_cb *self, self->settings.dce = IRCOMM_DELTA_CD; ircomm_tty_check_modem_status(self); } else { - struct tty_struct *tty = tty_port_tty_get(&self->port); IRDA_DEBUG(0, "%s(), hanging up!\n", __func__ ); - if (tty) { - tty_hangup(tty); - tty_kref_put(tty); - } + tty_port_tty_hangup(&self->port, false); } break; default: -- cgit v1.2.3 From 8198c1696a2cd15d436ade172bfd8085f5f818d3 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Tue, 16 Apr 2013 23:53:29 +0200 Subject: um: Use generic idle loop Signed-off-by: Richard Weinberger Cc: user-mode-linux-devel@lists.sourceforge.net Link: http://lkml.kernel.org/r/1366149209-24787-1-git-send-email-richard@nod.at Signed-off-by: Thomas Gleixner --- arch/um/Kconfig.common | 1 + arch/um/kernel/process.c | 27 ++++----------------------- 2 files changed, 5 insertions(+), 23 deletions(-) (limited to 'arch/um') diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common index bceee6623b00..57834067a511 100644 --- a/arch/um/Kconfig.common +++ b/arch/um/Kconfig.common @@ -12,6 +12,7 @@ config UML select GENERIC_CPU_DEVICES select GENERIC_IO select GENERIC_CLOCKEVENTS + select GENERIC_IDLE_LOOP select TTY # Needed for line.c config MMU diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index b462b13c5bae..bbcef522bcb1 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -210,33 +210,14 @@ void initial_thread_cb(void (*proc)(void *), void *arg) kmalloc_ok = save_kmalloc_ok; } -void default_idle(void) +void arch_cpu_idle(void) { unsigned long long nsecs; - while (1) { - /* endless idle loop with no priority at all */ - - /* - * although we are an idle CPU, we do not want to - * get into the scheduler unnecessarily. - */ - if (need_resched()) - schedule(); - - tick_nohz_idle_enter(); - rcu_idle_enter(); - nsecs = disable_timer(); - idle_sleep(nsecs); - rcu_idle_exit(); - tick_nohz_idle_exit(); - } -} - -void cpu_idle(void) -{ cpu_tasks[current_thread_info()->cpu].pid = os_getpid(); - default_idle(); + nsecs = disable_timer(); + idle_sleep(nsecs); + local_irq_enable(); } int __cant_sleep(void) { -- cgit v1.2.3 From d190e8195b90bc1e65c494fe08e54e9e581bfd16 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 17 Apr 2013 10:33:13 +0200 Subject: idle: Remove GENERIC_IDLE_LOOP config switch All archs are converted over. Remove the config switch and the fallback code. Signed-off-by: Thomas Gleixner --- arch/Kconfig | 3 --- arch/alpha/Kconfig | 1 - arch/arc/Kconfig | 1 - arch/arm/Kconfig | 1 - arch/arm64/Kconfig | 1 - arch/avr32/Kconfig | 1 - arch/blackfin/Kconfig | 1 - arch/c6x/Kconfig | 1 - arch/cris/Kconfig | 1 - arch/frv/Kconfig | 1 - arch/h8300/Kconfig | 1 - arch/hexagon/Kconfig | 1 - arch/ia64/Kconfig | 1 - arch/m32r/Kconfig | 1 - arch/m68k/Kconfig | 1 - arch/metag/Kconfig | 1 - arch/microblaze/Kconfig | 1 - arch/mips/Kconfig | 1 - arch/mn10300/Kconfig | 1 - arch/openrisc/Kconfig | 1 - arch/parisc/Kconfig | 1 - arch/powerpc/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/score/Kconfig | 1 - arch/sh/Kconfig | 1 - arch/sparc/Kconfig | 1 - arch/tile/Kconfig | 1 - arch/um/Kconfig.common | 1 - arch/unicore32/Kconfig | 1 - arch/x86/Kconfig | 1 - arch/xtensa/Kconfig | 1 - kernel/cpu/idle.c | 8 -------- 32 files changed, 41 deletions(-) (limited to 'arch/um') diff --git a/arch/Kconfig b/arch/Kconfig index a699f3767be4..1455579791ec 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -216,9 +216,6 @@ config USE_GENERIC_SMP_HELPERS config GENERIC_SMP_IDLE_THREAD bool -config GENERIC_IDLE_LOOP - bool - # Select if arch init_task initializer is different to init/init_task.c config ARCH_INIT_TASK bool diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 60469820a6c5..8a33ba01301f 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -17,7 +17,6 @@ config ALPHA select ARCH_WANT_IPC_PARSE_VERSION select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select GENERIC_CMOS_UPDATE select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index b006977a1516..e6f4eca09ee3 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -14,7 +14,6 @@ config ARC select GENERIC_ATOMIC64 select GENERIC_CLOCKEVENTS select GENERIC_FIND_FIRST_BIT - select GENERIC_IDLE_LOOP # for now, we don't need GENERIC_IRQ_PROBE, CONFIG_GENERIC_IRQ_CHIP select GENERIC_IRQ_SHOW select GENERIC_KERNEL_EXECVE diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 128551fcc6dd..fcedd612c54c 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -15,7 +15,6 @@ config ARM select GENERIC_IRQ_SHOW select GENERIC_PCI_IOMAP select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select GENERIC_IDLE_POLL_SETUP select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index ca2c871795c5..9b6d19f74078 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -9,7 +9,6 @@ config ARM64 select CLONE_BACKWARDS select COMMON_CLK select GENERIC_CLOCKEVENTS - select GENERIC_IDLE_LOOP select GENERIC_IOMAP select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig index bbecda4c3373..c1a868d398bd 100644 --- a/arch/avr32/Kconfig +++ b/arch/avr32/Kconfig @@ -10,7 +10,6 @@ config AVR32 select VIRT_TO_BUS select GENERIC_IRQ_PROBE select GENERIC_ATOMIC64 - select GENERIC_IDLE_LOOP select HARDIRQS_SW_RESEND select GENERIC_IRQ_SHOW select ARCH_HAVE_CUSTOM_GPIO_H diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index 3d769a7c4941..c3f2e0bc644a 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -41,7 +41,6 @@ config BLACKFIN select USE_GENERIC_SMP_HELPERS if SMP select HAVE_NMI_WATCHDOG if NMI_WATCHDOG select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS select HAVE_MOD_ARCH_SPECIFIC select MODULES_USE_ELF_RELA diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig index af2aa4b44140..f6a3648f5ec3 100644 --- a/arch/c6x/Kconfig +++ b/arch/c6x/Kconfig @@ -18,7 +18,6 @@ config C6X select OF_EARLY_FLATTREE select GENERIC_CLOCKEVENTS select MODULES_USE_ELF_RELA - select GENERIC_IDLE_LOOP config MMU def_bool n diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig index 1dd36355a3cd..06dd026533e3 100644 --- a/arch/cris/Kconfig +++ b/arch/cris/Kconfig @@ -48,7 +48,6 @@ config CRIS select GENERIC_IRQ_SHOW select GENERIC_IOMAP select GENERIC_SMP_IDLE_THREAD if ETRAX_ARCH_V32 - select GENERIC_IDLE_LOOP select GENERIC_CMOS_UPDATE select MODULES_USE_ELF_RELA select CLONE_BACKWARDS2 diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index 0d998db2039e..2ce731f9aa4d 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -8,7 +8,6 @@ config FRV select HAVE_GENERIC_HARDIRQS select VIRT_TO_BUS select GENERIC_IRQ_SHOW - select GENERIC_IDLE_LOOP select HAVE_DEBUG_BUGVERBOSE select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_CPU_DEVICES diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index 5374975fe800..79250de1b12a 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -8,7 +8,6 @@ config H8300 select VIRT_TO_BUS select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_IRQ_SHOW - select GENERIC_IDLE_LOOP select GENERIC_CPU_DEVICES select MODULES_USE_ELF_RELA select OLD_SIGSUSPEND3 diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index 6e3710e84a6c..e4decc6b8947 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -24,7 +24,6 @@ config HEXAGON select NO_IOPORT select GENERIC_IOMAP select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select STACKTRACE_SUPPORT select KTIME_SCALAR select GENERIC_CLOCKEVENTS diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index e0b39c3cb789..9a02f71c6b1f 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -35,7 +35,6 @@ config IA64 select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_IOMAP select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select ARCH_INIT_TASK select ARCH_TASK_STRUCT_ALLOCATOR select ARCH_THREAD_INFO_ALLOCATOR diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig index af814fe478ae..bcd17b206571 100644 --- a/arch/m32r/Kconfig +++ b/arch/m32r/Kconfig @@ -13,7 +13,6 @@ config M32R select VIRT_TO_BUS select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW - select GENERIC_IDLE_LOOP select GENERIC_ATOMIC64 select ARCH_USES_GETTIMEOFFSET select MODULES_USE_ELF_RELA diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 41859405a853..6de813370b8c 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -6,7 +6,6 @@ config M68K select HAVE_DEBUG_BUGVERBOSE select HAVE_GENERIC_HARDIRQS select GENERIC_IRQ_SHOW - select GENERIC_IDLE_LOOP select GENERIC_ATOMIC64 select HAVE_UID16 select VIRT_TO_BUS diff --git a/arch/metag/Kconfig b/arch/metag/Kconfig index 3164f6cebe2b..afc8973d1488 100644 --- a/arch/metag/Kconfig +++ b/arch/metag/Kconfig @@ -7,7 +7,6 @@ config METAG select EMBEDDED select GENERIC_ATOMIC64 select GENERIC_CLOCKEVENTS - select GENERIC_IDLE_LOOP select GENERIC_IRQ_SHOW select GENERIC_SMP_IDLE_THREAD select HAVE_64BIT_ALIGNED_ACCESS diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 0bb0d519a233..a827057c7927 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -26,7 +26,6 @@ config MICROBLAZE select GENERIC_CPU_DEVICES select GENERIC_ATOMIC64 select GENERIC_CLOCKEVENTS - select GENERIC_IDLE_LOOP select GENERIC_IDLE_POLL_SETUP select MODULES_USE_ELF_RELA select CLONE_BACKWARDS diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index e1a3d02af637..51244bf97271 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -34,7 +34,6 @@ config MIPS select HAVE_MEMBLOCK_NODE_MAP select ARCH_DISCARD_MEMBLOCK select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select BUILDTIME_EXTABLE_SORT select GENERIC_CLOCKEVENTS select GENERIC_CMOS_UPDATE diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index ae7158b69c9c..428da175d073 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -13,7 +13,6 @@ config MN10300 select MODULES_USE_ELF_RELA select OLD_SIGSUSPEND3 select OLD_SIGACTION - select GENERIC_IDLE_LOOP config AM33_2 def_bool n diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index e111b5200cd9..9ab3bf2eca8d 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -21,7 +21,6 @@ config OPENRISC select GENERIC_CLOCKEVENTS select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER - select GENERIC_IDLE_LOOP select MODULES_USE_ELF_RELA config MMU diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 0821e702d03f..0339181bf3ac 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -18,7 +18,6 @@ config PARISC select GENERIC_PCI_IOMAP select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select GENERIC_STRNCPY_FROM_USER select SYSCTL_ARCH_UNALIGN_ALLOW select HAVE_MOD_ARCH_SPECIFIC diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 19de32c52da5..ea5bb045983a 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -133,7 +133,6 @@ config PPC select HAVE_ARCH_JUMP_LABEL select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select GENERIC_CMOS_UPDATE select GENERIC_TIME_VSYSCALL_OLD select GENERIC_CLOCKEVENTS diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 749513d73e47..eb8fb629f00b 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -97,7 +97,6 @@ config S390 select CLONE_BACKWARDS2 select GENERIC_CLOCKEVENTS select GENERIC_CPU_DEVICES if !SMP - select GENERIC_IDLE_LOOP select GENERIC_KERNEL_THREAD select GENERIC_SMP_IDLE_THREAD select GENERIC_TIME_VSYSCALL_OLD diff --git a/arch/score/Kconfig b/arch/score/Kconfig index eaac45de65be..c8def8bc9020 100644 --- a/arch/score/Kconfig +++ b/arch/score/Kconfig @@ -11,7 +11,6 @@ config SCORE select ARCH_DISCARD_MEMBLOCK select GENERIC_CPU_DEVICES select GENERIC_CLOCKEVENTS - select GENERIC_IDLE_LOOP select HAVE_MOD_ARCH_SPECIFIC select VIRT_TO_BUS select MODULES_USE_ELF_REL diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 0917fc3f39c0..1ea597c6497a 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -33,7 +33,6 @@ config SUPERH select GENERIC_ATOMIC64 select GENERIC_IRQ_SHOW select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select GENERIC_IDLE_POLL_SETUP select GENERIC_CLOCKEVENTS select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index ee5eacc5a649..3d361f236308 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -37,7 +37,6 @@ config SPARC select GENERIC_SMP_IDLE_THREAD select GENERIC_CMOS_UPDATE select GENERIC_CLOCKEVENTS - select GENERIC_IDLE_LOOP select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER select MODULES_USE_ELF_RELA diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index 85b2edeade31..25877aebc685 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -22,7 +22,6 @@ config TILE select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_CLOCKEVENTS select MODULES_USE_ELF_RELA - select GENERIC_IDLE_LOOP # FIXME: investigate whether we need/want these options. # select HAVE_IOREMAP_PROT diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common index 57834067a511..bceee6623b00 100644 --- a/arch/um/Kconfig.common +++ b/arch/um/Kconfig.common @@ -12,7 +12,6 @@ config UML select GENERIC_CPU_DEVICES select GENERIC_IO select GENERIC_CLOCKEVENTS - select GENERIC_IDLE_LOOP select TTY # Needed for line.c config MMU diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig index e12678daaed1..2943e3acdf0c 100644 --- a/arch/unicore32/Kconfig +++ b/arch/unicore32/Kconfig @@ -17,7 +17,6 @@ config UNICORE32 select ARCH_WANT_FRAME_POINTERS select GENERIC_IOMAP select MODULES_USE_ELF_REL - select GENERIC_IDLE_LOOP help UniCore-32 is 32-bit Instruction Set Architecture, including a series of low-power-consumption RISC chip diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 734152d85fd0..fcf293994992 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -97,7 +97,6 @@ config X86 select GENERIC_IOMAP select DCACHE_WORD_ACCESS select GENERIC_SMP_IDLE_THREAD - select GENERIC_IDLE_LOOP select ARCH_WANT_IPC_PARSE_VERSION if X86_32 select HAVE_ARCH_SECCOMP_FILTER select BUILDTIME_EXTABLE_SORT diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index e0144ff4624d..b09de49dbec5 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -19,7 +19,6 @@ config XTENSA select CLONE_BACKWARDS select IRQ_DOMAIN select HAVE_OPROFILE - select GENERIC_IDLE_LOOP help Xtensa processors are 32-bit RISC machines designed by Tensilica primarily for embedded systems. These processors are both diff --git a/kernel/cpu/idle.c b/kernel/cpu/idle.c index 54c320383934..168cf407a254 100644 --- a/kernel/cpu/idle.c +++ b/kernel/cpu/idle.c @@ -10,13 +10,6 @@ #include -#ifndef CONFIG_GENERIC_IDLE_LOOP -void cpu_startup_entry(enum cpuhp_state state) -{ - cpu_idle(); -} -#else - static int __read_mostly cpu_idle_force_poll; void cpu_idle_poll_ctrl(bool enable) @@ -112,4 +105,3 @@ void cpu_startup_entry(enum cpuhp_state state) arch_cpu_idle_prepare(); cpu_idle_loop(); } -#endif -- cgit v1.2.3 From e16e0b1b9884f6b27d8021f6a2fd1fe507af2617 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 29 Apr 2013 15:06:51 -0700 Subject: mm/um: use common help functions to free reserved pages Use common help functions to free reserved pages. Signed-off-by: Jiang Liu Cc: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/kernel/mem.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) (limited to 'arch/um') diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index 5abcbfbe7e25..d5ac80299cda 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -254,15 +254,7 @@ void free_initmem(void) #ifdef CONFIG_BLK_DEV_INITRD void free_initrd_mem(unsigned long start, unsigned long end) { - if (start < end) - printk(KERN_INFO "Freeing initrd memory: %ldk freed\n", - (end - start) >> 10); - for (; start < end; start += PAGE_SIZE) { - ClearPageReserved(virt_to_page(start)); - init_page_count(virt_to_page(start)); - free_page(start); - totalram_pages++; - } + free_reserved_area(start, end, 0, "initrd"); } #endif -- cgit v1.2.3 From 5b472b2057f5bac344a94ab85c621235202ab9a4 Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Mon, 29 Apr 2013 15:07:11 -0700 Subject: mm/um: use free_highmem_page() to free highmem pages into buddy system Use helper function free_highmem_page() to free highmem pages into the buddy system. Signed-off-by: Jiang Liu Cc: Jeff Dike Cc: Richard Weinberger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/kernel/mem.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) (limited to 'arch/um') diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c index d5ac80299cda..9df292b270a8 100644 --- a/arch/um/kernel/mem.c +++ b/arch/um/kernel/mem.c @@ -42,17 +42,12 @@ static unsigned long brk_end; static void setup_highmem(unsigned long highmem_start, unsigned long highmem_len) { - struct page *page; unsigned long highmem_pfn; int i; highmem_pfn = __pa(highmem_start) >> PAGE_SHIFT; - for (i = 0; i < highmem_len >> PAGE_SHIFT; i++) { - page = &mem_map[highmem_pfn + i]; - ClearPageReserved(page); - init_page_count(page); - __free_page(page); - } + for (i = 0; i < highmem_len >> PAGE_SHIFT; i++) + free_highmem_page(&mem_map[highmem_pfn + i]); } #endif @@ -73,18 +68,13 @@ void __init mem_init(void) totalram_pages = free_all_bootmem(); max_low_pfn = totalram_pages; #ifdef CONFIG_HIGHMEM - totalhigh_pages = highmem >> PAGE_SHIFT; - totalram_pages += totalhigh_pages; + setup_highmem(end_iomem, highmem); #endif num_physpages = totalram_pages; max_pfn = totalram_pages; printk(KERN_INFO "Memory: %luk available\n", nr_free_pages() << (PAGE_SHIFT-10)); kmalloc_ok = 1; - -#ifdef CONFIG_HIGHMEM - setup_highmem(end_iomem, highmem); -#endif } /* -- cgit v1.2.3 From d0380e6c3c0f6edb986d8798a23acfaf33d5df23 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 29 Apr 2013 16:17:18 -0700 Subject: early_printk: consolidate random copies of identical code The early console implementations are the same all over the place. Move the print function to kernel/printk and get rid of the copies. [akpm@linux-foundation.org: arch/mips/kernel/early_printk.c needs kernel.h for va_list] [paul.gortmaker@windriver.com: sh4: make the bios early console support depend on EARLY_PRINTK] Signed-off-by: Thomas Gleixner Signed-off-by: Paul Gortmaker Cc: Russell King Acked-by: Mike Frysinger Cc: Michal Simek Cc: Ralf Baechle Cc: Benjamin Herrenschmidt Cc: Paul Mundt Cc: "David S. Miller" Cc: Chris Metcalf Cc: Richard Weinberger Reviewed-by: Ingo Molnar Tested-by: Paul Gortmaker Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/kernel/early_printk.c | 17 +++-------------- arch/blackfin/kernel/early_printk.c | 2 -- arch/microblaze/kernel/early_printk.c | 26 ++++---------------------- arch/mips/kernel/early_printk.c | 12 ++++++------ arch/powerpc/kernel/udbg.c | 6 ++---- arch/sh/kernel/sh_bios.c | 4 ++-- arch/tile/kernel/early_printk.c | 27 +++++---------------------- arch/um/kernel/early_printk.c | 8 +++++--- arch/unicore32/kernel/early_printk.c | 12 ++++-------- arch/x86/kernel/early_printk.c | 21 ++------------------- include/linux/console.h | 1 + include/linux/printk.h | 6 ++++++ kernel/printk.c | 30 +++++++++++++++++++++++------- 13 files changed, 63 insertions(+), 109 deletions(-) (limited to 'arch/um') diff --git a/arch/arm/kernel/early_printk.c b/arch/arm/kernel/early_printk.c index 85aa2b292692..43076536965c 100644 --- a/arch/arm/kernel/early_printk.c +++ b/arch/arm/kernel/early_printk.c @@ -29,28 +29,17 @@ static void early_console_write(struct console *con, const char *s, unsigned n) early_write(s, n); } -static struct console early_console = { +static struct console early_console_dev = { .name = "earlycon", .write = early_console_write, .flags = CON_PRINTBUFFER | CON_BOOT, .index = -1, }; -asmlinkage void early_printk(const char *fmt, ...) -{ - char buf[512]; - int n; - va_list ap; - - va_start(ap, fmt); - n = vscnprintf(buf, sizeof(buf), fmt, ap); - early_write(buf, n); - va_end(ap); -} - static int __init setup_early_printk(char *buf) { - register_console(&early_console); + early_console = &early_console_dev; + register_console(&early_console_dev); return 0; } diff --git a/arch/blackfin/kernel/early_printk.c b/arch/blackfin/kernel/early_printk.c index 84ed8375113c..61fbd2de993d 100644 --- a/arch/blackfin/kernel/early_printk.c +++ b/arch/blackfin/kernel/early_printk.c @@ -25,8 +25,6 @@ extern struct console *bfin_earlyserial_init(unsigned int port, extern struct console *bfin_jc_early_init(void); #endif -static struct console *early_console; - /* Default console */ #define DEFAULT_PORT 0 #define DEFAULT_CFLAG CS8|B57600 diff --git a/arch/microblaze/kernel/early_printk.c b/arch/microblaze/kernel/early_printk.c index 60dcacc68038..365f2d53f1b2 100644 --- a/arch/microblaze/kernel/early_printk.c +++ b/arch/microblaze/kernel/early_printk.c @@ -21,7 +21,6 @@ #include #include -static u32 early_console_initialized; static u32 base_addr; #ifdef CONFIG_SERIAL_UARTLITE_CONSOLE @@ -109,27 +108,11 @@ static struct console early_serial_uart16550_console = { }; #endif /* CONFIG_SERIAL_8250_CONSOLE */ -static struct console *early_console; - -void early_printk(const char *fmt, ...) -{ - char buf[512]; - int n; - va_list ap; - - if (early_console_initialized) { - va_start(ap, fmt); - n = vscnprintf(buf, 512, fmt, ap); - early_console->write(early_console, buf, n); - va_end(ap); - } -} - int __init setup_early_printk(char *opt) { int version = 0; - if (early_console_initialized) + if (early_console) return 1; base_addr = of_early_console(&version); @@ -159,7 +142,6 @@ int __init setup_early_printk(char *opt) } register_console(early_console); - early_console_initialized = 1; return 0; } return 1; @@ -169,7 +151,7 @@ int __init setup_early_printk(char *opt) * only for early console because of performance degression */ void __init remap_early_printk(void) { - if (!early_console_initialized || !early_console) + if (!early_console) return; pr_info("early_printk_console remapping from 0x%x to ", base_addr); base_addr = (u32) ioremap(base_addr, PAGE_SIZE); @@ -194,9 +176,9 @@ void __init remap_early_printk(void) void __init disable_early_printk(void) { - if (!early_console_initialized || !early_console) + if (!early_console) return; pr_warn("disabling early console\n"); unregister_console(early_console); - early_console_initialized = 0; + early_console = NULL; } diff --git a/arch/mips/kernel/early_printk.c b/arch/mips/kernel/early_printk.c index 9e6440eaa455..505cb77d1280 100644 --- a/arch/mips/kernel/early_printk.c +++ b/arch/mips/kernel/early_printk.c @@ -7,7 +7,9 @@ * Copyright (C) 2007 MIPS Technologies, Inc. * written by Ralf Baechle (ralf@linux-mips.org) */ +#include #include +#include #include #include @@ -24,20 +26,18 @@ static void early_console_write(struct console *con, const char *s, unsigned n) } } -static struct console early_console = { +static struct console early_console_prom = { .name = "early", .write = early_console_write, .flags = CON_PRINTBUFFER | CON_BOOT, .index = -1 }; -static int early_console_initialized __initdata; - void __init setup_early_printk(void) { - if (early_console_initialized) + if (early_console) return; - early_console_initialized = 1; + early_console = &early_console_prom; - register_console(&early_console); + register_console(&early_console_prom); } diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c index f9748498fe58..13b867093499 100644 --- a/arch/powerpc/kernel/udbg.c +++ b/arch/powerpc/kernel/udbg.c @@ -156,15 +156,13 @@ static struct console udbg_console = { .index = 0, }; -static int early_console_initialized; - /* * Called by setup_system after ppc_md->probe and ppc_md->early_init. * Call it again after setting udbg_putc in ppc_md->setup_arch. */ void __init register_early_udbg_console(void) { - if (early_console_initialized) + if (early_console) return; if (!udbg_putc) @@ -174,7 +172,7 @@ void __init register_early_udbg_console(void) printk(KERN_INFO "early console immortal !\n"); udbg_console.flags &= ~CON_BOOT; } - early_console_initialized = 1; + early_console = &udbg_console; register_console(&udbg_console); } diff --git a/arch/sh/kernel/sh_bios.c b/arch/sh/kernel/sh_bios.c index 47475cca068a..fe584e516964 100644 --- a/arch/sh/kernel/sh_bios.c +++ b/arch/sh/kernel/sh_bios.c @@ -104,6 +104,7 @@ void sh_bios_vbr_reload(void) ); } +#ifdef CONFIG_EARLY_PRINTK /* * Print a string through the BIOS */ @@ -144,8 +145,6 @@ static struct console bios_console = { .index = -1, }; -static struct console *early_console; - static int __init setup_early_printk(char *buf) { int keep_early = 0; @@ -170,3 +169,4 @@ static int __init setup_early_printk(char *buf) return 0; } early_param("earlyprintk", setup_early_printk); +#endif diff --git a/arch/tile/kernel/early_printk.c b/arch/tile/kernel/early_printk.c index afb9c9a0d887..34d72a151bf3 100644 --- a/arch/tile/kernel/early_printk.c +++ b/arch/tile/kernel/early_printk.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -33,25 +34,8 @@ static struct console early_hv_console = { }; /* Direct interface for emergencies */ -static struct console *early_console = &early_hv_console; -static int early_console_initialized; static int early_console_complete; -static void early_vprintk(const char *fmt, va_list ap) -{ - char buf[512]; - int n = vscnprintf(buf, sizeof(buf), fmt, ap); - early_console->write(early_console, buf, n); -} - -void early_printk(const char *fmt, ...) -{ - va_list ap; - va_start(ap, fmt); - early_vprintk(fmt, ap); - va_end(ap); -} - void early_panic(const char *fmt, ...) { va_list ap; @@ -69,14 +53,13 @@ static int __initdata keep_early; static int __init setup_early_printk(char *str) { - if (early_console_initialized) + if (early_console) return 1; if (str != NULL && strncmp(str, "keep", 4) == 0) keep_early = 1; early_console = &early_hv_console; - early_console_initialized = 1; register_console(early_console); return 0; @@ -85,12 +68,12 @@ static int __init setup_early_printk(char *str) void __init disable_early_printk(void) { early_console_complete = 1; - if (!early_console_initialized || !early_console) + if (!early_console) return; if (!keep_early) { early_printk("disabling early console\n"); unregister_console(early_console); - early_console_initialized = 0; + early_console = NULL; } else { early_printk("keeping early console\n"); } @@ -98,7 +81,7 @@ void __init disable_early_printk(void) void warn_early_printk(void) { - if (early_console_complete || early_console_initialized) + if (early_console_complete || early_console) return; early_printk("\ Machine shutting down before console output is fully initialized.\n\ diff --git a/arch/um/kernel/early_printk.c b/arch/um/kernel/early_printk.c index 49480f092456..4a0800bc37b2 100644 --- a/arch/um/kernel/early_printk.c +++ b/arch/um/kernel/early_printk.c @@ -16,7 +16,7 @@ static void early_console_write(struct console *con, const char *s, unsigned int um_early_printk(s, n); } -static struct console early_console = { +static struct console early_console_dev = { .name = "earlycon", .write = early_console_write, .flags = CON_BOOT, @@ -25,8 +25,10 @@ static struct console early_console = { static int __init setup_early_printk(char *buf) { - register_console(&early_console); - + if (!early_console) { + early_console = &early_console_dev; + register_console(&early_console_dev); + } return 0; } diff --git a/arch/unicore32/kernel/early_printk.c b/arch/unicore32/kernel/early_printk.c index 3922255f1fa8..9be0d5d02a9a 100644 --- a/arch/unicore32/kernel/early_printk.c +++ b/arch/unicore32/kernel/early_printk.c @@ -33,21 +33,17 @@ static struct console early_ocd_console = { .index = -1, }; -/* Direct interface for emergencies */ -static struct console *early_console = &early_ocd_console; - -static int __initdata keep_early; - static int __init setup_early_printk(char *buf) { - if (!buf) + int keep_early; + + if (!buf || early_console) return 0; if (strstr(buf, "keep")) keep_early = 1; - if (!strncmp(buf, "ocd", 3)) - early_console = &early_ocd_console; + early_console = &early_ocd_console; if (keep_early) early_console->flags &= ~CON_BOOT; diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c index 9b9f18b49918..d15f575a861b 100644 --- a/arch/x86/kernel/early_printk.c +++ b/arch/x86/kernel/early_printk.c @@ -169,25 +169,9 @@ static struct console early_serial_console = { .index = -1, }; -/* Direct interface for emergencies */ -static struct console *early_console = &early_vga_console; -static int __initdata early_console_initialized; - -asmlinkage void early_printk(const char *fmt, ...) -{ - char buf[512]; - int n; - va_list ap; - - va_start(ap, fmt); - n = vscnprintf(buf, sizeof(buf), fmt, ap); - early_console->write(early_console, buf, n); - va_end(ap); -} - static inline void early_console_register(struct console *con, int keep_early) { - if (early_console->index != -1) { + if (con->index != -1) { printk(KERN_CRIT "ERROR: earlyprintk= %s already used\n", con->name); return; @@ -207,9 +191,8 @@ static int __init setup_early_printk(char *buf) if (!buf) return 0; - if (early_console_initialized) + if (early_console) return 0; - early_console_initialized = 1; keep = (strstr(buf, "keep") != NULL); diff --git a/include/linux/console.h b/include/linux/console.h index 29680a8cda99..73bab0f58af5 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -141,6 +141,7 @@ struct console { for (con = console_drivers; con != NULL; con = con->next) extern int console_set_on_cmdline; +extern struct console *early_console; extern int add_preferred_console(char *name, int idx, char *options); extern int update_console_cmdline(char *name, int idx, char *name_new, int idx_new, char *options); diff --git a/include/linux/printk.h b/include/linux/printk.h index 822171fcb1c8..1c35c23bccd7 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -95,8 +95,14 @@ int no_printk(const char *fmt, ...) return 0; } +#ifdef CONFIG_EARLY_PRINTK extern asmlinkage __printf(1, 2) void early_printk(const char *fmt, ...); +void early_vprintk(const char *fmt, va_list ap); +#else +static inline __printf(1, 2) __cold +void early_printk(const char *s, ...) { } +#endif #ifdef CONFIG_PRINTK asmlinkage __printf(5, 0) diff --git a/kernel/printk.c b/kernel/printk.c index 2de593df036b..1c8ca176458f 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -49,13 +49,6 @@ #define CREATE_TRACE_POINTS #include -/* - * Architectures can override it: - */ -void asmlinkage __attribute__((weak)) early_printk(const char *fmt, ...) -{ -} - /* printk's without a loglevel use this.. */ #define DEFAULT_MESSAGE_LOGLEVEL CONFIG_DEFAULT_MESSAGE_LOGLEVEL @@ -1723,6 +1716,29 @@ static size_t cont_print_text(char *text, size_t size) { return 0; } #endif /* CONFIG_PRINTK */ +#ifdef CONFIG_EARLY_PRINTK +struct console *early_console; + +void early_vprintk(const char *fmt, va_list ap) +{ + if (early_console) { + char buf[512]; + int n = vscnprintf(buf, sizeof(buf), fmt, ap); + + early_console->write(early_console, buf, n); + } +} + +asmlinkage void early_printk(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + early_vprintk(fmt, ap); + va_end(ap); +} +#endif + static int __add_preferred_console(char *name, int idx, char *options, char *brl_options) { -- cgit v1.2.3