Srikar Dronamraju <sri...@linux.vnet.ibm.com> writes:
> * Michael Ellerman <m...@ellerman.id.au> [2019-12-13 14:50:35]:
>
>> Waiman Long suggested using static_keys.
>>
>> Fixes: 247f2f6f3c70 ("sched/core: Don't schedule threads on pre-empted
>> vCPUs")
>> Cc: sta...@vger.kernel.org # v4.18+
>> Reported-by: Parth Shah <pa...@linux.ibm.com>
>> Reported-by: Ihor Pasichnyk <ihor.pasich...@ibm.com>
>> Tested-by: Juri Lelli <juri.le...@redhat.com>
>> Acked-by: Waiman Long <long...@redhat.com>
>> Reviewed-by: Gautham R. Shenoy <e...@linux.vnet.ibm.com>
>> Signed-off-by: Srikar Dronamraju <sri...@linux.vnet.ibm.com>
>> Acked-by: Phil Auld <pa...@redhat.com>
>> Reviewed-by: Vaidyanathan Srinivasan <sva...@linux.ibm.com>
>> Tested-by: Parth Shah <pa...@linux.ibm.com>
>> [mpe: Move the key and setting of the key to pseries/setup.c]
>> Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
>> ---
>> arch/powerpc/include/asm/spinlock.h | 4 +++-
>> arch/powerpc/platforms/pseries/setup.c | 7 +++++++
>> 2 files changed, 10 insertions(+), 1 deletion(-)
>>
>
> Tested with your version of the patch and its working as expected
Thanks, I took the values below and put them in the changelog for the
patched case.
cheers
> Latency percentiles (usec)
> 50.0th: 45
> 75.0th: 63
> 90.0th: 74
> 95.0th: 78
> *99.0th: 82
> 99.5th: 83
> 99.9th: 86
> min=0, max=96
> Latency percentiles (usec)
> 50.0th: 46
> 75.0th: 64
> 90.0th: 75
> 95.0th: 79
> *99.0th: 83
> 99.5th: 85
> 99.9th: 91
> min=0, max=117
> Latency percentiles (usec)
> 50.0th: 46
> 75.0th: 64
> 90.0th: 75
> 95.0th: 79
> *99.0th: 83
> 99.5th: 84
> 99.9th: 90
> min=0, max=95
> Latency percentiles (usec)
> 50.0th: 47
> 75.0th: 65
> 90.0th: 75
> 95.0th: 79
> *99.0th: 84
> 99.5th: 85
> 99.9th: 90
> min=0, max=117
> Latency percentiles (usec)
> 50.0th: 45
> 75.0th: 64
> 90.0th: 75
> 95.0th: 79
> *99.0th: 82
> 99.5th: 83
> 99.9th: 93
> min=0, max=111
>
>
> --
> Thanks and Regards
> Srikar Dronamraju
