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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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4
kernel/smp.c
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@@ -107,7 +107,7 @@ static __always_inline void
send_call_function_single_ipi(int cpu, smp_call_func_t func)
{
if (call_function_single_prep_ipi(cpu)) {
trace_ipi_send_cpumask(cpumask_of(cpu), _RET_IP_, func);
trace_ipi_send_cpu(cpu, _RET_IP_, func);
arch_send_call_function_single_ipi(cpu);
}
}
@@ -346,7 +346,7 @@ void __smp_call_single_queue(int cpu, struct llist_node *node)
* even if we haven't sent the smp_call IPI yet (e.g. the stopper
* executes migration_cpu_stop() on the remote CPU).
*/
if (trace_ipi_send_cpumask_enabled()) {
if (trace_ipi_send_cpu_enabled()) {
call_single_data_t *csd;
smp_call_func_t func;