A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 18:51:56 -04:00
Code Issues Projects Releases Packages Wiki Activity

ratelimit: Make suppressed output messages more useful

Browse source 
Today I got:

  [39648.224782] Registered led device: iwl-phy0::TX
  [40676.545099] __ratelimit: 246 callbacks suppressed
  [40676.545103] abcdef[23675]: segfault at 0 ...

as you can see the ratelimit message contains a function prefix.
Since this is always __ratelimit, this wont help much.

This patch changes __ratelimit and printk_ratelimit to print the
function name that calls ratelimit.

This will pinpoint the responsible function, as long as not several
different places call ratelimit with the same ratelimit state at
the same time. In that case we catch only one random function that
calls ratelimit after the wait period.

Signed-off-by: Christian Borntraeger <[email protected]>
Cc: Dave Young <[email protected]>
Cc: Linus Torvalds <[email protected]>
CC: Andrew Morton <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Christian Borntraeger 2009-10-23 14:58:11 +02:00 • committed by Ingo Molnar
commit 5c82871335
4 changed files with 10 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

6
kernel/printk.c
View file

@ -1364,11 +1364,11 @@ late_initcall(disable_boot_consoles);
*/
DEFINE_RATELIMIT_STATE(printk_ratelimit_state, 5 * HZ, 10);
int printk_ratelimit(void)
int __printk_ratelimit(const char *func)
{
return __ratelimit(&printk_ratelimit_state);
return ___ratelimit(&printk_ratelimit_state, func);
}
EXPORT_SYMBOL(printk_ratelimit);
EXPORT_SYMBOL(__printk_ratelimit);
/**
* printk_timed_ratelimit - caller-controlled printk ratelimiting