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/openbmc/linux/lib/
H A Dcpumask.cdiff 14e292f8d45380c519a83d9b0f37089a17eedcdf Thu Oct 01 08:54:14 CDT 2020 Peter Zijlstra <peterz@infradead.org> sched,rt: Use cpumask_any*_distribute()

Replace a bunch of cpumask_any*() instances with
cpumask_any*_distribute(), by injecting this little bit of random in
cpu selection, we reduce the chance two competing balance operations
working off the same lowest_mask pick the same CPU.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Link: https://lkml.kernel.org/r/20201023102347.190759694@infradead.org
/openbmc/linux/include/linux/
H A Dcpumask.hdiff 14e292f8d45380c519a83d9b0f37089a17eedcdf Thu Oct 01 08:54:14 CDT 2020 Peter Zijlstra <peterz@infradead.org> sched,rt: Use cpumask_any*_distribute()

Replace a bunch of cpumask_any*() instances with
cpumask_any*_distribute(), by injecting this little bit of random in
cpu selection, we reduce the chance two competing balance operations
working off the same lowest_mask pick the same CPU.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Link: https://lkml.kernel.org/r/20201023102347.190759694@infradead.org
/openbmc/linux/kernel/sched/
H A Drt.cdiff 14e292f8d45380c519a83d9b0f37089a17eedcdf Thu Oct 01 08:54:14 CDT 2020 Peter Zijlstra <peterz@infradead.org> sched,rt: Use cpumask_any*_distribute()

Replace a bunch of cpumask_any*() instances with
cpumask_any*_distribute(), by injecting this little bit of random in
cpu selection, we reduce the chance two competing balance operations
working off the same lowest_mask pick the same CPU.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Link: https://lkml.kernel.org/r/20201023102347.190759694@infradead.org
H A Ddeadline.cdiff 14e292f8d45380c519a83d9b0f37089a17eedcdf Thu Oct 01 08:54:14 CDT 2020 Peter Zijlstra <peterz@infradead.org> sched,rt: Use cpumask_any*_distribute()

Replace a bunch of cpumask_any*() instances with
cpumask_any*_distribute(), by injecting this little bit of random in
cpu selection, we reduce the chance two competing balance operations
working off the same lowest_mask pick the same CPU.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Link: https://lkml.kernel.org/r/20201023102347.190759694@infradead.org