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Subject[RFC PATCH 3/5] smp: Add a multi-CPU variant to send_call_function_single_ipi()
Date
This simply wraps around the arch function and prepends it with a
tracepoint, bringing parity with send_call_function_single_ipi().

Signed-off-by: Valentin Schneider <vschneid@redhat.com>
---
kernel/smp.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/kernel/smp.c b/kernel/smp.c
index 7a7a22d69972..387735180aed 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -160,6 +160,12 @@ void __init call_function_init(void)
smpcfd_prepare_cpu(smp_processor_id());
}

+static inline void send_call_function_ipi_mask(const struct cpumask *mask)
+{
+ trace_ipi_send_cpumask(_RET_IP_, mask);
+ arch_send_call_function_ipi_mask(mask);
+}
+
#ifdef CONFIG_CSD_LOCK_WAIT_DEBUG

static DEFINE_STATIC_KEY_FALSE(csdlock_debug_enabled);
@@ -970,7 +976,7 @@ static void smp_call_function_many_cond(const struct cpumask *mask,
if (nr_cpus == 1)
send_call_function_single_ipi(last_cpu);
else if (likely(nr_cpus > 1))
- arch_send_call_function_ipi_mask(cfd->cpumask_ipi);
+ send_call_function_ipi_mask(cfd->cpumask_ipi);

cfd_seq_store(this_cpu_ptr(&cfd_seq_local)->pinged, this_cpu, CFD_SEQ_NOCPU, CFD_SEQ_PINGED);
}
--
2.31.1
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