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List:       linux-arch
Subject:    Re: [PATCH v9 4/4] nmi_backtrace: generate one-line reports for idle cpus
From:       Petr Mladek <pmladek () suse ! com>
Date:       2016-08-30 15:46:41
Message-ID: 20160830154641.GD4554 () pathway ! suse ! cz
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On Mon 2016-08-29 12:12:49, Chris Metcalf wrote:
> When doing an nmi backtrace of many cores, most of which are idle,
> the output is a little overwhelming and very uninformative.  Suppress
> messages for cpus that are idling when they are interrupted and just
> emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN".
> 
> We do this by grouping all the cpuidle code together into a new
> .cpuidle.text section, and then checking the address of the
> interrupted PC to see if it lies within that section.
> 
> This commit suitably tags x86 and tile idle routines, and only
> adds in the minimal framework for other architectures.
> 
> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm]
> Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>

This version works even with my configuration. Feel free to
add

Tested-by: Petr Mladek <pmladek@suse.com>

Best Regards,
Petr
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