kexec jump: __ftrace_enabled_save/restore
authorHuang Ying <ying.huang@intel.com>
Fri, 15 Aug 2008 07:40:25 +0000 (00:40 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 15 Aug 2008 15:35:42 +0000 (08:35 -0700)
commit9bdeb7b5d34f197dea7859d24475943395ffea5e
treef2db04f16f95ac713bb35d9c0dc8626a294d6d60
parent73bd9c72a29be1e8de008186eea55d333a938804
kexec jump: __ftrace_enabled_save/restore

Add __ftrace_enabled_save/restore, used to disable ftrace for a while.
Now, this is used by kexec jump, which need a version without lock, for
general situation, a locked version should be used.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/ftrace.h