Commit acf59377 authored by Andreas Gruenbacher's avatar Andreas Gruenbacher Committed by Ingo Molnar

locking/lockdep: Only ask for /proc/lock_stat output when available

When lockdep turns itself off, the following message is logged:

  Please attach the output of /proc/lock_stat to the bug report

Omit this message when CONFIG_LOCK_STAT is off, and /proc/lock_stat
doesn't exist.
Signed-off-by: default avatarAndreas Gruenbacher <andreas.gruenbacher@gmail.com>
Signed-off-by: default avatarPeter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1405451452-3824-1-git-send-email-andreas.gruenbacher@gmail.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent b5e4111f
...@@ -384,7 +384,9 @@ static void print_lockdep_off(const char *bug_msg) ...@@ -384,7 +384,9 @@ static void print_lockdep_off(const char *bug_msg)
{ {
printk(KERN_DEBUG "%s\n", bug_msg); printk(KERN_DEBUG "%s\n", bug_msg);
printk(KERN_DEBUG "turning off the locking correctness validator.\n"); printk(KERN_DEBUG "turning off the locking correctness validator.\n");
#ifdef CONFIG_LOCK_STAT
printk(KERN_DEBUG "Please attach the output of /proc/lock_stat to the bug report\n"); printk(KERN_DEBUG "Please attach the output of /proc/lock_stat to the bug report\n");
#endif
} }
static int save_trace(struct stack_trace *trace) static int save_trace(struct stack_trace *trace)
......
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