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| author | Aaro Koskinen <aaro.koskinen@nokia.com> | 2019-06-17 23:35:19 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-06-25 16:42:19 +0100 |
| commit | d914d4d4974529da898f2d2618e39df757147c2f (patch) | |
| tree | a792ce714498ab98919c9bcc96d3bf6abc0b0a03 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | dccc9da22dedad203acea355b0e4d946b71172e5 (diff) | |
arm64: Implement panic_smp_self_stop()
Currently arm64 uses the default implementation of panic_smp_self_stop()
where the CPU runs in a cpu_relax() loop unable to receive IPIs anymore.
As a result, when two CPUs panic() simultaneously we get "SMP: failed to
stop secondary CPUs" warnings and extra delays before a reset, because
smp_send_stop() still tries to stop the other paniced CPU.
Provide an implementation of panic_smp_self_stop() that is identical to
the IPI CPU stop handler, so that the online status of stopped CPUs gets
properly updated.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions