diff options
| author | Tejun Heo <tj@kernel.org> | 2015-06-25 15:01:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-25 17:00:39 -0700 |
| commit | a6d403ac96893cb5c5812c2d75de082795f02e5f (patch) | |
| tree | 4a8e7dfdcc89e8ea4025ad13aeacd7b92bbd6c25 | |
| parent | 6fe29354befe4c46eb308b662155d4d8017358e1 (diff) | |
| download | linux-a6d403ac96893cb5c5812c2d75de082795f02e5f.tar.bz2 | |
netconsole: remove unnecessary netconsole_target_get/out() from write_msg()
write_msg() grabs target_list_lock and walks target_list invoking
netpool_send_udp() on each target. Curiously, it protects each iteration
with netconsole_target_get/put() even though it never releases
target_list_lock which protects all the members.
While this doesn't harm anything, it doesn't serve any purpose either.
The items on the list can't go away while target_list_lock is held.
Remove the unnecessary get/put pair.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: David Miller <davem@davemloft.net>
Cc: Kay Sievers <kay@vrfy.org>
Cc: Petr Mladek <pmladek@suse.cz>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/net/netconsole.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index 15731d1db918..30c0524d7016 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -744,7 +744,6 @@ static void write_msg(struct console *con, const char *msg, unsigned int len) spin_lock_irqsave(&target_list_lock, flags); list_for_each_entry(nt, &target_list, list) { - netconsole_target_get(nt); if (nt->enabled && netif_running(nt->np.dev)) { /* * We nest this inside the for-each-target loop above @@ -760,7 +759,6 @@ static void write_msg(struct console *con, const char *msg, unsigned int len) left -= frag; } } - netconsole_target_put(nt); } spin_unlock_irqrestore(&target_list_lock, flags); } |