From 396ada68acefc4f90cf1f05d4275913834af5d93 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Thu, 16 Apr 2015 12:43:10 -0700 Subject: alpha: forward declare struct pt_regs in processor.h Removal of exec domains uncovered this new warning. processor.h re-used struct pt_regs from personality.h which is now gone. ./arch/alpha/include/asm/processor.h:47:33: warning: 'struct pt_regs' declared inside parameter list [enabled by default] Signed-off-by: Richard Weinberger Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/include/asm/processor.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/alpha/include/asm/processor.h b/arch/alpha/include/asm/processor.h index b4cf03690394..43a7559c448b 100644 --- a/arch/alpha/include/asm/processor.h +++ b/arch/alpha/include/asm/processor.h @@ -44,6 +44,7 @@ struct task_struct; extern unsigned long thread_saved_pc(struct task_struct *); /* Do necessary setup to start up a newly executed thread. */ +struct pt_regs; extern void start_thread(struct pt_regs *, unsigned long, unsigned long); /* Free all resources held by a thread. */ -- cgit v1.2.3 From be2a7fce397d82b7dc3fdbc61fb0bdab118e65ca Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Thu, 16 Apr 2015 12:48:40 -0700 Subject: arc: do not export symbols in troubleshoot.c print_task_path_n_nm() is local to this file, its only user being show_regs(). Mark the function static and avoid the EXPORT_SYMBOL. Signed-off-by: Davidlohr Bueso Acked-by: Vineet Gupta Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arc/kernel/troubleshoot.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arc/kernel/troubleshoot.c b/arch/arc/kernel/troubleshoot.c index 1badf9b84b51..e00a01879025 100644 --- a/arch/arc/kernel/troubleshoot.c +++ b/arch/arc/kernel/troubleshoot.c @@ -52,7 +52,7 @@ static void show_callee_regs(struct callee_regs *cregs) print_reg_file(&(cregs->r13), 13); } -void print_task_path_n_nm(struct task_struct *tsk, char *buf) +static void print_task_path_n_nm(struct task_struct *tsk, char *buf) { struct path path; char *path_nm = NULL; @@ -77,7 +77,6 @@ void print_task_path_n_nm(struct task_struct *tsk, char *buf) done: pr_info("Path: %s\n", path_nm); } -EXPORT_SYMBOL(print_task_path_n_nm); static void show_faulting_vma(unsigned long address, char *buf) { -- cgit v1.2.3 From 6bcf4e9aab9e9f718edebe77712512fc5c4ecd3e Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 16 Apr 2015 12:48:47 -0700 Subject: arm: use asm-generic for seccomp.h Switch to using the newly created asm-generic/seccomp.h for the seccomp strict mode syscall definitions. Definitions were identical. Signed-off-by: Kees Cook Cc: Russell King Cc: Laura Abbott Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/include/asm/Kbuild | 1 + arch/arm/include/asm/seccomp.h | 11 ----------- 2 files changed, 1 insertion(+), 11 deletions(-) delete mode 100644 arch/arm/include/asm/seccomp.h (limited to 'arch') diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild index eb0f43f3e3f1..3c4596d0ce6c 100644 --- a/arch/arm/include/asm/Kbuild +++ b/arch/arm/include/asm/Kbuild @@ -21,6 +21,7 @@ generic-y += preempt.h generic-y += resource.h generic-y += rwsem.h generic-y += scatterlist.h +generic-y += seccomp.h generic-y += sections.h generic-y += segment.h generic-y += sembuf.h diff --git a/arch/arm/include/asm/seccomp.h b/arch/arm/include/asm/seccomp.h deleted file mode 100644 index 52b156b341f5..000000000000 --- a/arch/arm/include/asm/seccomp.h +++ /dev/null @@ -1,11 +0,0 @@ -#ifndef _ASM_ARM_SECCOMP_H -#define _ASM_ARM_SECCOMP_H - -#include - -#define __NR_seccomp_read __NR_read -#define __NR_seccomp_write __NR_write -#define __NR_seccomp_exit __NR_exit -#define __NR_seccomp_sigreturn __NR_rt_sigreturn - -#endif /* _ASM_ARM_SECCOMP_H */ -- cgit v1.2.3 From cc2d316fe7b2f39ecacdbd4be04fccbc2476cb7a Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 16 Apr 2015 12:48:50 -0700 Subject: microblaze: use asm-generic for seccomp.h Switch to using the newly created asm-generic/seccomp.h for the seccomp strict mode syscall definitions. Since microblaze is 32-bit, the COMPAT seccomp defines are unused and can be dropped. The obsolete sigreturn for seccomp strict mode is retained as an override. Remaining definitions are identical. Signed-off-by: Kees Cook Cc: Michal Simek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/microblaze/include/asm/seccomp.h | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) (limited to 'arch') diff --git a/arch/microblaze/include/asm/seccomp.h b/arch/microblaze/include/asm/seccomp.h index 0d912758a0d7..204618a2ce84 100644 --- a/arch/microblaze/include/asm/seccomp.h +++ b/arch/microblaze/include/asm/seccomp.h @@ -3,14 +3,8 @@ #include -#define __NR_seccomp_read __NR_read -#define __NR_seccomp_write __NR_write -#define __NR_seccomp_exit __NR_exit #define __NR_seccomp_sigreturn __NR_sigreturn -#define __NR_seccomp_read_32 __NR_read -#define __NR_seccomp_write_32 __NR_write -#define __NR_seccomp_exit_32 __NR_exit -#define __NR_seccomp_sigreturn_32 __NR_sigreturn +#include #endif /* _ASM_MICROBLAZE_SECCOMP_H */ -- cgit v1.2.3 From 97247fd99da723ce2c87a45e714c332b71e3e003 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 16 Apr 2015 12:48:53 -0700 Subject: mips: switch to using asm-generic for seccomp.h Switch to using the newly created asm-generic/seccomp.h for the seccomp strict mode syscall definitions. COMPAT definitions retain their overrides and the remaining definitions were identical. Signed-off-by: Kees Cook Cc: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/mips/include/asm/seccomp.h | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/mips/include/asm/seccomp.h b/arch/mips/include/asm/seccomp.h index f29c75cf83c6..1d8a2e2c75c1 100644 --- a/arch/mips/include/asm/seccomp.h +++ b/arch/mips/include/asm/seccomp.h @@ -2,11 +2,6 @@ #include -#define __NR_seccomp_read __NR_read -#define __NR_seccomp_write __NR_write -#define __NR_seccomp_exit __NR_exit -#define __NR_seccomp_sigreturn __NR_rt_sigreturn - /* * Kludge alert: * @@ -29,4 +24,6 @@ #endif /* CONFIG_MIPS32_O32 */ +#include + #endif /* __ASM_SECCOMP_H */ -- cgit v1.2.3 From cf7a71b602fe2255b5b42162fa39a3090a1ea2c7 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 16 Apr 2015 12:48:55 -0700 Subject: parisc: switch to using asm-generic for seccomp.h Switch to using the newly created asm-generic/seccomp.h for the seccomp strict mode syscall definitions. Definitions were identical. Signed-off-by: Kees Cook Cc: "James E.J. Bottomley" Cc: Helge Deller Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/parisc/include/asm/Kbuild | 1 + arch/parisc/include/asm/seccomp.h | 16 ---------------- 2 files changed, 1 insertion(+), 16 deletions(-) delete mode 100644 arch/parisc/include/asm/seccomp.h (limited to 'arch') diff --git a/arch/parisc/include/asm/Kbuild b/arch/parisc/include/asm/Kbuild index 8686237a3c3c..12b341d04f88 100644 --- a/arch/parisc/include/asm/Kbuild +++ b/arch/parisc/include/asm/Kbuild @@ -20,6 +20,7 @@ generic-y += param.h generic-y += percpu.h generic-y += poll.h generic-y += preempt.h +generic-y += seccomp.h generic-y += segment.h generic-y += topology.h generic-y += trace_clock.h diff --git a/arch/parisc/include/asm/seccomp.h b/arch/parisc/include/asm/seccomp.h deleted file mode 100644 index 015f7887aa29..000000000000 --- a/arch/parisc/include/asm/seccomp.h +++ /dev/null @@ -1,16 +0,0 @@ -#ifndef _ASM_PARISC_SECCOMP_H -#define _ASM_PARISC_SECCOMP_H - -#include - -#define __NR_seccomp_read __NR_read -#define __NR_seccomp_write __NR_write -#define __NR_seccomp_exit __NR_exit -#define __NR_seccomp_sigreturn __NR_rt_sigreturn - -#define __NR_seccomp_read_32 __NR_read -#define __NR_seccomp_write_32 __NR_write -#define __NR_seccomp_exit_32 __NR_exit -#define __NR_seccomp_sigreturn_32 __NR_rt_sigreturn - -#endif /* _ASM_PARISC_SECCOMP_H */ -- cgit v1.2.3 From 1a3aff9ec376666563c7a2223a1d6c19f908919d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 16 Apr 2015 12:48:58 -0700 Subject: powerpc: switch to using asm-generic for seccomp.h Switch to using the newly created asm-generic/seccomp.h for the seccomp strict mode syscall definitions. The obsolete sigreturn in COMPAT mode is retained as an override. Remaining definitions are identical, though they incorrectly appeared in uapi, which has been corrected. Signed-off-by: Kees Cook Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/powerpc/include/asm/seccomp.h | 10 ++++++++++ arch/powerpc/include/uapi/asm/Kbuild | 1 - arch/powerpc/include/uapi/asm/seccomp.h | 16 ---------------- 3 files changed, 10 insertions(+), 17 deletions(-) create mode 100644 arch/powerpc/include/asm/seccomp.h delete mode 100644 arch/powerpc/include/uapi/asm/seccomp.h (limited to 'arch') diff --git a/arch/powerpc/include/asm/seccomp.h b/arch/powerpc/include/asm/seccomp.h new file mode 100644 index 000000000000..c1818e35cf02 --- /dev/null +++ b/arch/powerpc/include/asm/seccomp.h @@ -0,0 +1,10 @@ +#ifndef _ASM_POWERPC_SECCOMP_H +#define _ASM_POWERPC_SECCOMP_H + +#include + +#define __NR_seccomp_sigreturn_32 __NR_sigreturn + +#include + +#endif /* _ASM_POWERPC_SECCOMP_H */ diff --git a/arch/powerpc/include/uapi/asm/Kbuild b/arch/powerpc/include/uapi/asm/Kbuild index 7a3f795ac218..79c4068be278 100644 --- a/arch/powerpc/include/uapi/asm/Kbuild +++ b/arch/powerpc/include/uapi/asm/Kbuild @@ -25,7 +25,6 @@ header-y += posix_types.h header-y += ps3fb.h header-y += ptrace.h header-y += resource.h -header-y += seccomp.h header-y += sembuf.h header-y += setup.h header-y += shmbuf.h diff --git a/arch/powerpc/include/uapi/asm/seccomp.h b/arch/powerpc/include/uapi/asm/seccomp.h deleted file mode 100644 index 00c1d9133cfe..000000000000 --- a/arch/powerpc/include/uapi/asm/seccomp.h +++ /dev/null @@ -1,16 +0,0 @@ -#ifndef _ASM_POWERPC_SECCOMP_H -#define _ASM_POWERPC_SECCOMP_H - -#include - -#define __NR_seccomp_read __NR_read -#define __NR_seccomp_write __NR_write -#define __NR_seccomp_exit __NR_exit -#define __NR_seccomp_sigreturn __NR_rt_sigreturn - -#define __NR_seccomp_read_32 __NR_read -#define __NR_seccomp_write_32 __NR_write -#define __NR_seccomp_exit_32 __NR_exit -#define __NR_seccomp_sigreturn_32 __NR_sigreturn - -#endif /* _ASM_POWERPC_SECCOMP_H */ -- cgit v1.2.3 From d0f138b0853e3b0a0bcd83f3019d34842e12951d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 16 Apr 2015 12:49:01 -0700 Subject: sparc: switch to using asm-generic for seccomp.h Switch to using the newly created asm-generic/seccomp.h for the seccomp strict mode syscall definitions. The obsolete sigreturn in COMPAT mode is retained as an override. Remaining definitions are identical. Also corrected missing #define for header reinclusion protection. Signed-off-by: Kees Cook Cc: "David S. Miller" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/sparc/include/asm/seccomp.h | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'arch') diff --git a/arch/sparc/include/asm/seccomp.h b/arch/sparc/include/asm/seccomp.h index adca1bce41d4..5ef8826d44f8 100644 --- a/arch/sparc/include/asm/seccomp.h +++ b/arch/sparc/include/asm/seccomp.h @@ -1,15 +1,10 @@ #ifndef _ASM_SECCOMP_H +#define _ASM_SECCOMP_H #include -#define __NR_seccomp_read __NR_read -#define __NR_seccomp_write __NR_write -#define __NR_seccomp_exit __NR_exit -#define __NR_seccomp_sigreturn __NR_rt_sigreturn - -#define __NR_seccomp_read_32 __NR_read -#define __NR_seccomp_write_32 __NR_write -#define __NR_seccomp_exit_32 __NR_exit #define __NR_seccomp_sigreturn_32 __NR_sigreturn +#include + #endif /* _ASM_SECCOMP_H */ -- cgit v1.2.3 From 8eb68bf75eb7ea73bce88cb9d42efd3bbcece3cd Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 16 Apr 2015 12:49:04 -0700 Subject: x86: switch to using asm-generic for seccomp.h Switch to using the newly created asm-generic/seccomp.h for the seccomp strict mode syscall definitions. The obsolete sigreturn syscall override is retained in 32-bit mode, and the ia32 syscall overrides are used in the compat case. Remaining definitions were identical. Signed-off-by: Kees Cook Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/x86/include/asm/seccomp.h | 21 ++++++++++++++++++--- arch/x86/include/asm/seccomp_32.h | 11 ----------- arch/x86/include/asm/seccomp_64.h | 17 ----------------- 3 files changed, 18 insertions(+), 31 deletions(-) delete mode 100644 arch/x86/include/asm/seccomp_32.h delete mode 100644 arch/x86/include/asm/seccomp_64.h (limited to 'arch') diff --git a/arch/x86/include/asm/seccomp.h b/arch/x86/include/asm/seccomp.h index 0f3d7f099224..0c8c7c8861b4 100644 --- a/arch/x86/include/asm/seccomp.h +++ b/arch/x86/include/asm/seccomp.h @@ -1,5 +1,20 @@ +#ifndef _ASM_X86_SECCOMP_H +#define _ASM_X86_SECCOMP_H + +#include + #ifdef CONFIG_X86_32 -# include -#else -# include +#define __NR_seccomp_sigreturn __NR_sigreturn #endif + +#ifdef CONFIG_COMPAT +#include +#define __NR_seccomp_read_32 __NR_ia32_read +#define __NR_seccomp_write_32 __NR_ia32_write +#define __NR_seccomp_exit_32 __NR_ia32_exit +#define __NR_seccomp_sigreturn_32 __NR_ia32_sigreturn +#endif + +#include + +#endif /* _ASM_X86_SECCOMP_H */ diff --git a/arch/x86/include/asm/seccomp_32.h b/arch/x86/include/asm/seccomp_32.h deleted file mode 100644 index b811d6f5780c..000000000000 --- a/arch/x86/include/asm/seccomp_32.h +++ /dev/null @@ -1,11 +0,0 @@ -#ifndef _ASM_X86_SECCOMP_32_H -#define _ASM_X86_SECCOMP_32_H - -#include - -#define __NR_seccomp_read __NR_read -#define __NR_seccomp_write __NR_write -#define __NR_seccomp_exit __NR_exit -#define __NR_seccomp_sigreturn __NR_sigreturn - -#endif /* _ASM_X86_SECCOMP_32_H */ diff --git a/arch/x86/include/asm/seccomp_64.h b/arch/x86/include/asm/seccomp_64.h deleted file mode 100644 index 84ec1bd161a5..000000000000 --- a/arch/x86/include/asm/seccomp_64.h +++ /dev/null @@ -1,17 +0,0 @@ -#ifndef _ASM_X86_SECCOMP_64_H -#define _ASM_X86_SECCOMP_64_H - -#include -#include - -#define __NR_seccomp_read __NR_read -#define __NR_seccomp_write __NR_write -#define __NR_seccomp_exit __NR_exit -#define __NR_seccomp_sigreturn __NR_rt_sigreturn - -#define __NR_seccomp_read_32 __NR_ia32_read -#define __NR_seccomp_write_32 __NR_ia32_write -#define __NR_seccomp_exit_32 __NR_ia32_exit -#define __NR_seccomp_sigreturn_32 __NR_ia32_sigreturn - -#endif /* _ASM_X86_SECCOMP_64_H */ -- cgit v1.2.3 From 15beb694c66146e1133b9ff81d54e3ef3daa1d7c Mon Sep 17 00:00:00 2001 From: Joshua Kinard Date: Thu, 16 Apr 2015 12:49:09 -0700 Subject: mips: ip32: add platform data hooks to use DS1685 driver This modifies the IP32 (SGI O2) platform and reset code to utilize the new rtc-ds1685 driver. The old mc146818rtc.h header is removed and ip32_defconfig is updated as well. Signed-off-by: Joshua Kinard Acked-by: Ralf Baechle Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/mips/configs/ip32_defconfig | 3 +- arch/mips/include/asm/mach-ip32/mc146818rtc.h | 36 ------- arch/mips/sgi-ip32/ip32-platform.c | 46 +++++++-- arch/mips/sgi-ip32/ip32-reset.c | 131 ++++++++------------------ 4 files changed, 80 insertions(+), 136 deletions(-) delete mode 100644 arch/mips/include/asm/mach-ip32/mc146818rtc.h (limited to 'arch') diff --git a/arch/mips/configs/ip32_defconfig b/arch/mips/configs/ip32_defconfig index 70ffe9b55829..fe48220157a9 100644 --- a/arch/mips/configs/ip32_defconfig +++ b/arch/mips/configs/ip32_defconfig @@ -105,7 +105,8 @@ CONFIG_RTC_CLASS=y # CONFIG_RTC_HCTOSYS is not set # CONFIG_RTC_INTF_SYSFS is not set # CONFIG_RTC_INTF_PROC is not set -CONFIG_RTC_DRV_CMOS=y +CONFIG_RTC_DRV_DS1685_FAMILY=y +CONFIG_RTC_DRV_DS1685=y CONFIG_EXT2_FS=y CONFIG_EXT2_FS_XATTR=y CONFIG_EXT2_FS_POSIX_ACL=y diff --git a/arch/mips/include/asm/mach-ip32/mc146818rtc.h b/arch/mips/include/asm/mach-ip32/mc146818rtc.h deleted file mode 100644 index 6b6bab43d5c1..000000000000 --- a/arch/mips/include/asm/mach-ip32/mc146818rtc.h +++ /dev/null @@ -1,36 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 1998, 2001, 03 by Ralf Baechle - * Copyright (C) 2000 Harald Koerfgen - * - * RTC routines for IP32 style attached Dallas chip. - */ -#ifndef __ASM_MACH_IP32_MC146818RTC_H -#define __ASM_MACH_IP32_MC146818RTC_H - -#include - -#define RTC_PORT(x) (0x70 + (x)) - -static unsigned char CMOS_READ(unsigned long addr) -{ - return mace->isa.rtc[addr << 8]; -} - -static inline void CMOS_WRITE(unsigned char data, unsigned long addr) -{ - mace->isa.rtc[addr << 8] = data; -} - -/* - * FIXME: Do it right. For now just assume that no one lives in 20th century - * and no O2 user in 22th century ;-) - */ -#define mc146818_decode_year(year) ((year) + 2000) - -#define RTC_ALWAYS_BCD 0 - -#endif /* __ASM_MACH_IP32_MC146818RTC_H */ diff --git a/arch/mips/sgi-ip32/ip32-platform.c b/arch/mips/sgi-ip32/ip32-platform.c index 511e9ff2acfd..b522477129a5 100644 --- a/arch/mips/sgi-ip32/ip32-platform.c +++ b/arch/mips/sgi-ip32/ip32-platform.c @@ -9,10 +9,13 @@ #include #include #include +#include #include #include +extern void ip32_prepare_poweroff(void); + #define MACEISA_SERIAL1_OFFS offsetof(struct sgi_mace, isa.serial1) #define MACEISA_SERIAL2_OFFS offsetof(struct sgi_mace, isa.serial2) @@ -90,18 +93,47 @@ static __init int sgio2btns_devinit(void) device_initcall(sgio2btns_devinit); -static struct resource sgio2_cmos_rsrc[] = { +#define MACE_RTC_RES_START (MACE_BASE + offsetof(struct sgi_mace, isa.rtc)) +#define MACE_RTC_RES_END (MACE_RTC_RES_START + 32767) + +static struct resource ip32_rtc_resources[] = { { - .start = 0x70, - .end = 0x71, - .flags = IORESOURCE_IO + .start = MACEISA_RTC_IRQ, + .end = MACEISA_RTC_IRQ, + .flags = IORESOURCE_IRQ + }, { + .start = MACE_RTC_RES_START, + .end = MACE_RTC_RES_END, + .flags = IORESOURCE_MEM, } }; -static __init int sgio2_cmos_devinit(void) +/* RTC registers on IP32 are each padded by 256 bytes (0x100). */ +static struct ds1685_rtc_platform_data +ip32_rtc_platform_data[] = { + { + .regstep = 0x100, + .bcd_mode = true, + .no_irq = false, + .uie_unsupported = false, + .alloc_io_resources = true, + .plat_prepare_poweroff = ip32_prepare_poweroff, + }, +}; + +struct platform_device ip32_rtc_device = { + .name = "rtc-ds1685", + .id = -1, + .dev = { + .platform_data = ip32_rtc_platform_data, + }, + .num_resources = ARRAY_SIZE(ip32_rtc_resources), + .resource = ip32_rtc_resources, +}; + ++static int __init sgio2_rtc_devinit(void) { - return IS_ERR(platform_device_register_simple("rtc_cmos", -1, - sgio2_cmos_rsrc, 1)); + return platform_device_register(&ip32_rtc_device); } device_initcall(sgio2_cmos_devinit); diff --git a/arch/mips/sgi-ip32/ip32-reset.c b/arch/mips/sgi-ip32/ip32-reset.c index 44b3470a0bbb..8bd415c8729f 100644 --- a/arch/mips/sgi-ip32/ip32-reset.c +++ b/arch/mips/sgi-ip32/ip32-reset.c @@ -11,10 +11,11 @@ #include #include #include +#include #include #include #include -#include +#include #include #include @@ -33,53 +34,40 @@ #define POWERDOWN_FREQ (HZ / 4) #define PANIC_FREQ (HZ / 8) -static struct timer_list power_timer, blink_timer, debounce_timer; -static int has_panicked, shuting_down; +extern struct platform_device ip32_rtc_device; -static void ip32_machine_restart(char *command) __noreturn; -static void ip32_machine_halt(void) __noreturn; -static void ip32_machine_power_off(void) __noreturn; +static struct timer_list power_timer, blink_timer; +static int has_panicked, shutting_down; -static void ip32_machine_restart(char *cmd) +static __noreturn void ip32_poweroff(void *data) { - crime->control = CRIME_CONTROL_HARD_RESET; - while (1); -} + void (*poweroff_func)(struct platform_device *) = + symbol_get(ds1685_rtc_poweroff); + +#ifdef CONFIG_MODULES + /* If the first __symbol_get failed, our module wasn't loaded. */ + if (!poweroff_func) { + request_module("rtc-ds1685"); + poweroff_func = symbol_get(ds1685_rtc_poweroff); + } +#endif -static inline void ip32_machine_halt(void) -{ - ip32_machine_power_off(); -} + if (!poweroff_func) + pr_emerg("RTC not available for power-off. Spinning forever ...\n"); + else { + (*poweroff_func)((struct platform_device *)data); + symbol_put(ds1685_rtc_poweroff); + } -static void ip32_machine_power_off(void) -{ - unsigned char reg_a, xctrl_a, xctrl_b; - - disable_irq(MACEISA_RTC_IRQ); - reg_a = CMOS_READ(RTC_REG_A); - - /* setup for kickstart & wake-up (DS12287 Ref. Man. p. 19) */ - reg_a &= ~DS_REGA_DV2; - reg_a |= DS_REGA_DV1; - - CMOS_WRITE(reg_a | DS_REGA_DV0, RTC_REG_A); - wbflush(); - xctrl_b = CMOS_READ(DS_B1_XCTRL4B) - | DS_XCTRL4B_ABE | DS_XCTRL4B_KFE; - CMOS_WRITE(xctrl_b, DS_B1_XCTRL4B); - xctrl_a = CMOS_READ(DS_B1_XCTRL4A) & ~DS_XCTRL4A_IFS; - CMOS_WRITE(xctrl_a, DS_B1_XCTRL4A); - wbflush(); - /* adios amigos... */ - CMOS_WRITE(xctrl_a | DS_XCTRL4A_PAB, DS_B1_XCTRL4A); - CMOS_WRITE(reg_a, RTC_REG_A); - wbflush(); - while (1); + unreachable(); } -static void power_timeout(unsigned long data) +static void ip32_machine_restart(char *cmd) __noreturn; +static void ip32_machine_restart(char *cmd) { - ip32_machine_power_off(); + msleep(20); + crime->control = CRIME_CONTROL_HARD_RESET; + unreachable(); } static void blink_timeout(unsigned long data) @@ -89,44 +77,27 @@ static void blink_timeout(unsigned long data) mod_timer(&blink_timer, jiffies + data); } -static void debounce(unsigned long data) +static void ip32_machine_halt(void) { - unsigned char reg_a, reg_c, xctrl_a; - - reg_c = CMOS_READ(RTC_INTR_FLAGS); - reg_a = CMOS_READ(RTC_REG_A); - CMOS_WRITE(reg_a | DS_REGA_DV0, RTC_REG_A); - wbflush(); - xctrl_a = CMOS_READ(DS_B1_XCTRL4A); - if ((xctrl_a & DS_XCTRL4A_IFS) || (reg_c & RTC_IRQF )) { - /* Interrupt still being sent. */ - debounce_timer.expires = jiffies + 50; - add_timer(&debounce_timer); - - /* clear interrupt source */ - CMOS_WRITE(xctrl_a & ~DS_XCTRL4A_IFS, DS_B1_XCTRL4A); - CMOS_WRITE(reg_a & ~DS_REGA_DV0, RTC_REG_A); - return; - } - CMOS_WRITE(reg_a & ~DS_REGA_DV0, RTC_REG_A); - - if (has_panicked) - ip32_machine_restart(NULL); + ip32_poweroff(&ip32_rtc_device); +} - enable_irq(MACEISA_RTC_IRQ); +static void power_timeout(unsigned long data) +{ + ip32_poweroff(&ip32_rtc_device); } -static inline void ip32_power_button(void) +void ip32_prepare_poweroff(void) { if (has_panicked) return; - if (shuting_down || kill_cad_pid(SIGINT, 1)) { + if (shutting_down || kill_cad_pid(SIGINT, 1)) { /* No init process or button pressed twice. */ - ip32_machine_power_off(); + ip32_poweroff(&ip32_rtc_device); } - shuting_down = 1; + shutting_down = 1; blink_timer.data = POWERDOWN_FREQ; blink_timeout(POWERDOWN_FREQ); @@ -136,27 +107,6 @@ static inline void ip32_power_button(void) add_timer(&power_timer); } -static irqreturn_t ip32_rtc_int(int irq, void *dev_id) -{ - unsigned char reg_c; - - reg_c = CMOS_READ(RTC_INTR_FLAGS); - if (!(reg_c & RTC_IRQF)) { - printk(KERN_WARNING - "%s: RTC IRQ without RTC_IRQF\n", __func__); - } - /* Wait until interrupt goes away */ - disable_irq_nosync(MACEISA_RTC_IRQ); - init_timer(&debounce_timer); - debounce_timer.function = debounce; - debounce_timer.expires = jiffies + 50; - add_timer(&debounce_timer); - - printk(KERN_DEBUG "Power button pressed\n"); - ip32_power_button(); - return IRQ_HANDLED; -} - static int panic_event(struct notifier_block *this, unsigned long event, void *ptr) { @@ -190,15 +140,12 @@ static __init int ip32_reboot_setup(void) _machine_restart = ip32_machine_restart; _machine_halt = ip32_machine_halt; - pm_power_off = ip32_machine_power_off; + pm_power_off = ip32_machine_halt; init_timer(&blink_timer); blink_timer.function = blink_timeout; atomic_notifier_chain_register(&panic_notifier_list, &panic_block); - if (request_irq(MACEISA_RTC_IRQ, ip32_rtc_int, 0, "rtc", NULL)) - panic("Can't allocate MACEISA RTC IRQ"); - return 0; } -- cgit v1.2.3 From fd89a65f155fa890c0130139dfb91684d6da4cfb Mon Sep 17 00:00:00 2001 From: Davidlohr Bueso Date: Thu, 16 Apr 2015 12:49:15 -0700 Subject: powerpc/oprofile: reduce mmap_sem hold for exe_file In the future mm->exe_file will be done without mmap_sem serialization, thus isolate and reorganize the related code to make the transition easier. Good users will, make use of the more standard get_mm_exe_file(), requiring only holding the mmap_sem to read the value, and relying on reference counting to make sure that the exe file won't dissappear underneath us while getting the dcookie. Signed-off-by: Davidlohr Bueso Cc: Arnd Bergmann Cc: Robert Richter Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/powerpc/oprofile/cell/spu_task_sync.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/oprofile/cell/spu_task_sync.c b/arch/powerpc/oprofile/cell/spu_task_sync.c index 1c27831df1ac..ed7b0977072a 100644 --- a/arch/powerpc/oprofile/cell/spu_task_sync.c +++ b/arch/powerpc/oprofile/cell/spu_task_sync.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -322,18 +323,20 @@ get_exec_dcookie_and_offset(struct spu *spu, unsigned int *offsetp, unsigned long app_cookie = 0; unsigned int my_offset = 0; struct vm_area_struct *vma; + struct file *exe_file; struct mm_struct *mm = spu->mm; if (!mm) goto out; - down_read(&mm->mmap_sem); - - if (mm->exe_file) { - app_cookie = fast_get_dcookie(&mm->exe_file->f_path); - pr_debug("got dcookie for %pD\n", mm->exe_file); + exe_file = get_mm_exe_file(mm); + if (exe_file) { + app_cookie = fast_get_dcookie(&exe_file->f_path); + pr_debug("got dcookie for %pD\n", exe_file); + fput(exe_file); } + down_read(&mm->mmap_sem); for (vma = mm->mmap; vma; vma = vma->vm_next) { if (vma->vm_start > spu_ref || vma->vm_end <= spu_ref) continue; -- cgit v1.2.3