Re: [request for stable inclusion][3.10.x] patches to avoid interrupt storm when perf sampling is too slow

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, May 27, 2014 at 10:00:12AM +0800, Weng Meiling wrote:
> 
> Hi Dave, Stephane, Knut, Peter or Will,
> 
> 14c63f17b1fde5a575a28e96547a22b451c71fb5
> perf: Drop sample rate when sampling is too slow
> 
> e5302920da9ef23f9d19d4e9ac85704cc25bee7a
> perf: Fix interrupt handler timing harness
> 
> 723478c8a471403c53cf144999701f6e0c4bbd11
> perf: Enforce 1 as lower limit for perf_event_max_sample_rate
> 
> 5f5092e72cc25a6a5785308270e0085b2b2772cc
> ARM: perf: hook up perf_sample_event_took around pmu irq
> 
> These patches look applicable to stable-3.10, these patches prevent
> an interrupt storm when perf sampling is too slow on x86 and arm,
> an interrupt storm may trigger softlockup.
> 
> Patch e5302920da9e and 723478c8a471 are bug fix for 14c63f17b1fd. The
> last one patch can't be applied directly, I've adjusted the context manually.
> 
> Now they were built successful for me. What do you think?

Looks reasonable, now applied.

thanks,

greg k-h-
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]