Messages in this thread | | | Date | Sat, 8 Oct 2022 15:34:42 -0400 | From | Steven Rostedt <> | Subject | Re: [RFC PATCH 4/5] irq_work: Trace calls to arch_irq_work_raise() |
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On Fri, 7 Oct 2022 16:45:32 +0100 Valentin Schneider <vschneid@redhat.com> wrote: > } > > +static inline void irq_work_raise(void) > +{ > + if (arch_irq_work_has_interrupt()) > + trace_ipi_send_cpu(_RET_IP_, smp_processor_id());
To save on the branch, let's make the above:
if (trace_ipi_send_cpu_enabled() && arch_irq_work_has_interrupt())
As the "trace_*_enabled()" is a static branch that will make it a nop when the tracepoint is not enabled.
-- Steve
> + > + arch_irq_work_raise(); > +} > + > /* Enqueue on current CPU, work must already be claimed and preempt disabled */
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