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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-22 17:33:34 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-22 17:33:34 -0800
commit7d91de74436a69c2b78a7a72f1e7f97f8b4396fa (patch)
treea43e68ae4ebbf0ec98678876d584fb0eb0303274 /kernel/panic.c
parent6ef192f2259e78e1870c509fbd3040e6752b3b9c (diff)
parentd9c23523ed98a3acaa0bfd8fef143595d6aa631d (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk
Pull printk updates from Petr Mladek: - Add Petr Mladek, Sergey Senozhatsky as printk maintainers, and Steven Rostedt as the printk reviewer. This idea came up after the discussion about printk issues at Kernel Summit. It was formulated and discussed at lkml[1]. - Extend a lock-less NMI per-cpu buffers idea to handle recursive printk() calls by Sergey Senozhatsky[2]. It is the first step in sanitizing printk as discussed at Kernel Summit. The change allows to see messages that would normally get ignored or would cause a deadlock. Also it allows to enable lockdep in printk(). This already paid off. The testing in linux-next helped to discover two old problems that were hidden before[3][4]. - Remove unused parameter by Sergey Senozhatsky. Clean up after a past change. [1] http://lkml.kernel.org/r/1481798878-31898-1-git-send-email-pmladek@suse.com [2] http://lkml.kernel.org/r/20161227141611.940-1-sergey.senozhatsky@gmail.com [3] http://lkml.kernel.org/r/20170215044332.30449-1-sergey.senozhatsky@gmail.com [4] http://lkml.kernel.org/r/20170217015932.11898-1-sergey.senozhatsky@gmail.com * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk: printk: drop call_console_drivers() unused param printk: convert the rest to printk-safe printk: remove zap_locks() function printk: use printk_safe buffers in printk printk: report lost messages in printk safe/nmi contexts printk: always use deferred printk when flush printk_safe lines printk: introduce per-cpu safe_print seq buffer printk: rename nmi.c and exported api printk: use vprintk_func in vprintk() MAINTAINERS: Add printk maintainers
Diffstat (limited to 'kernel/panic.c')
-rw-r--r--kernel/panic.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/panic.c b/kernel/panic.c
index 08aa88dde7de..b95959733ce0 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -188,7 +188,7 @@ void panic(const char *fmt, ...)
* Bypass the panic_cpu check and call __crash_kexec directly.
*/
if (!_crash_kexec_post_notifiers) {
- printk_nmi_flush_on_panic();
+ printk_safe_flush_on_panic();
__crash_kexec(NULL);
/*
@@ -213,7 +213,7 @@ void panic(const char *fmt, ...)
atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
/* Call flush even twice. It tries harder with a single online CPU */
- printk_nmi_flush_on_panic();
+ printk_safe_flush_on_panic();
kmsg_dump(KMSG_DUMP_PANIC);
/*

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