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trace: Add trace_ipi_send_cpu()

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Because copying cpumasks around when targeting a single CPU is a bit
daft...

Tested-and-reviewed-by: Valentin Schneider <vschneid@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230322103004.GA571242%40hirez.programming.kicks-ass.net
This commit is contained in:
Peter Zijlstra
2023-03-22 11:28:36 +01:00
parent 68f4ff04db
commit 68e2d17c9e
5 changed files with 30 additions and 9 deletions
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6
include/linux/smp.h
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@@ -130,9 +130,9 @@ extern void arch_smp_send_reschedule(int cpu);
* scheduler_ipi() is inline so can't be passed as callback reason, but the
* callsite IP should be sufficient for root-causing IPIs sent from here.
*/
#define smp_send_reschedule(cpu) ({ \
trace_ipi_send_cpumask(cpumask_of(cpu), _RET_IP_, NULL); \
arch_smp_send_reschedule(cpu); \
#define smp_send_reschedule(cpu) ({ \
trace_ipi_send_cpu(cpu, _RET_IP_, NULL); \
arch_smp_send_reschedule(cpu); \
})
/*