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
next prev parent 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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