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>,
Thomas Gleixner <tglx@linutronix.de>,
Mel Gorman <mgorman@techsingularity.net>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Subject: [RFC][PATCHv2 1/7] printk: use vprintk_func in vprintk()
Date: Sat, 1 Oct 2016 00:17:52 +0900 [thread overview]
Message-ID: <20160930151758.8965-2-sergey.senozhatsky@gmail.com> (raw)
In-Reply-To: <20160930151758.8965-1-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:[~2016-09-30 15:19 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-30 15:17 [RFC][PATCHv2 0/7] printk: use alt_printk to handle printk() recursive calls Sergey Senozhatsky
2016-09-30 15:17 ` Sergey Senozhatsky [this message]
2016-09-30 15:17 ` [RFC][PATCHv2 2/7] printk: rename nmi.c and exported api Sergey Senozhatsky
2016-09-30 15:17 ` [RFC][PATCHv2 3/7] printk: introduce per-cpu alt_print seq buffer Sergey Senozhatsky
2016-10-01 2:24 ` Sergey Senozhatsky
2016-10-06 14:56 ` Petr Mladek
2016-10-07 19:40 ` Sergey Senozhatsky
2016-10-10 11:03 ` Petr Mladek
2016-10-06 13:08 ` Petr Mladek
2016-10-07 19:33 ` Sergey Senozhatsky
2016-09-30 15:17 ` [RFC][PATCHv2 4/7] printk: make alt_printk available when config printk set Sergey Senozhatsky
2016-10-06 15:23 ` Petr Mladek
2016-10-07 19:08 ` Sergey Senozhatsky
2016-09-30 15:17 ` [RFC][PATCHv2 5/7] printk: use alternative printk buffers Sergey Senozhatsky
2016-09-30 15:17 ` [RFC][PATCHv2 6/7] printk: report printk recursion from alt_printk flush Sergey Senozhatsky
2016-10-06 15:41 ` Petr Mladek
2016-10-07 18:59 ` Sergey Senozhatsky
2016-10-10 11:02 ` Petr Mladek
2016-09-30 15:17 ` [RFC][PATCHv2 7/7] printk: remove zap_locks() function Sergey Senozhatsky
2016-10-06 15:55 ` [RFC][PATCHv2 0/7] printk: use alt_printk to handle printk() recursive calls Petr Mladek
2016-10-07 18:56 ` Sergey Senozhatsky
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