[PATCH v5 3/7] smp: Trace IPIs sent via arch_send_call_function_ipi_mask()

From: Valentin Schneider <vschneid@redhat.com>
To: linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-snps-arc@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org,
	linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org,
	loongarch@lists.linux.dev, linux-mips@vger.kernel.org,
	openrisc@lists.librecores.org, linux-parisc@vger.kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org,
	linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
	sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org,
	x86@kernel.org
Cc: Steven Rostedt <rostedt@goodmis.org>,
	"Paul E. McKenney" <paulmck@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Juri Lelli <juri.lelli@redhat.com>,
	Daniel Bristot de Oliveira <bristot@redhat.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Frederic Weisbecker <frederic@kernel.org>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Marc Zyngier <maz@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Russell King <linux@armlinux.org.uk>,
	Nicholas Piggin <npiggin@gmail.com>, Guo Ren <guoren@kernel.org>,
	"David S. Miller" <davem@davemloft.net>
Subject: [PATCH v5 3/7] smp: Trace IPIs sent via arch_send_call_function_ipi_mask()
Date: Tue,  7 Mar 2023 14:35:54 +0000	[thread overview]
Message-ID: <20230307143558.294354-4-vschneid@redhat.com> (raw)
In-Reply-To: <20230307143558.294354-1-vschneid@redhat.com>

This simply wraps around the arch function and prepends it with a
tracepoint, similar to send_call_function_single_ipi().

Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
 kernel/smp.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/kernel/smp.c b/kernel/smp.c
index e2ca1e2f31274..93b4386cd3096 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -160,6 +160,13 @@ void __init call_function_init(void)
 	smpcfd_prepare_cpu(smp_processor_id());
 }
 
+static __always_inline void
+send_call_function_ipi_mask(const struct cpumask *mask)
+{
+	trace_ipi_send_cpumask(mask, _RET_IP_, NULL);
+	arch_send_call_function_ipi_mask(mask);
+}
+
 #ifdef CONFIG_CSD_LOCK_WAIT_DEBUG
 
 static DEFINE_STATIC_KEY_FALSE(csdlock_debug_enabled);
@@ -970,7 +977,7 @@ 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


_______________________________________________
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
