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From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Petr Mladek <pmladek@suse.com>, Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Tejun Heo <tj@kernel.org>, Calvin Owens <calvinowens@fb.com>,
	linux-kernel@vger.kernel.org,
	Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
	Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: [RFC][PATCH 1/7] printk: use vprintk_func in vprintk()
Date: Tue, 27 Sep 2016 23:22:31 +0900	[thread overview]
Message-ID: <20160927142237.5539-2-sergey.senozhatsky@gmail.com> (raw)
In-Reply-To: <20160927142237.5539-1-sergey.senozhatsky@gmail.com>

vprintk(), just like printk(), better be using per-cpu printk_func
instead of direct vprintk_emit() call. Just in case if vprintk()
will ever be called from NMI, or from any other context that can
deadlock in printk().

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
---
 kernel/printk/printk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 8019cc0..c7ffbef 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1922,7 +1922,7 @@ EXPORT_SYMBOL(vprintk_emit);
 
 asmlinkage int vprintk(const char *fmt, va_list args)
 {
-	return vprintk_emit(0, LOGLEVEL_DEFAULT, NULL, 0, fmt, args);
+	return vprintk_func(fmt, args);
 }
 EXPORT_SYMBOL(vprintk);
 
-- 
2.10.0.372.g6fe1b14

  reply	other threads:[~2016-09-27 14:25 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-09-27 14:22 [RFC][PATCH 0/7] printk: use alt_printk to handle printk() recursive calls Sergey Senozhatsky
2016-09-27 14:22 ` Sergey Senozhatsky [this message]
2016-09-27 14:22 ` [RFC][PATCH 2/7] printk: rename nmi.c and exported api Sergey Senozhatsky
2016-09-27 14:22 ` [RFC][PATCH 3/7] printk: introduce per-cpu alt_print seq buffer Sergey Senozhatsky
2016-09-29 12:26   ` Petr Mladek
2016-09-30  1:05     ` Sergey Senozhatsky
2016-09-30 11:35       ` Petr Mladek
2016-09-27 14:22 ` [RFC][PATCH 4/7] printk: make alt_printk available when config printk set Sergey Senozhatsky
2016-09-27 14:22 ` [RFC][PATCH 5/7] printk: drop vprintk_func function Sergey Senozhatsky
2016-09-27 14:22 ` [RFC][PATCH 6/7] printk: use alternative printk buffers Sergey Senozhatsky
2016-09-29 13:00   ` Petr Mladek
2016-09-30  1:15     ` Sergey Senozhatsky
2016-09-30 11:15       ` Petr Mladek
2016-10-01  2:48         ` Sergey Senozhatsky
2016-10-04 12:22           ` Petr Mladek
2016-10-05  1:36             ` Sergey Senozhatsky
2016-10-05 10:18               ` Petr Mladek
2016-10-03  7:53         ` Sergey Senozhatsky
2016-10-04 14:52         ` Petr Mladek
2016-10-05  1:27           ` Sergey Senozhatsky
2016-10-05  9:50             ` Petr Mladek
2016-10-06  4:22               ` Sergey Senozhatsky
2016-10-06 11:32                 ` Petr Mladek
2016-10-10  4:09                   ` Sergey Senozhatsky
2016-10-10 11:17                     ` Petr Mladek
2016-10-11  7:35                       ` Sergey Senozhatsky
2016-10-11  9:30                         ` Petr Mladek
2016-09-27 14:22 ` [RFC][PATCH 7/7] printk: new printk() recursion detection Sergey Senozhatsky
2016-09-29 13:19   ` Petr Mladek
2016-09-30  2:00     ` Sergey Senozhatsky
2016-09-29 13:25 ` [RFC][PATCH 0/7] printk: use alt_printk to handle printk() recursive calls Petr Mladek
2016-09-30  2:43   ` Sergey Senozhatsky
2016-09-30 11:27     ` Petr Mladek
2016-10-01  3:02       ` Sergey Senozhatsky
2016-10-04 11:35         ` Petr Mladek

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