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Wed, 02 Nov 2022 11:34:24 -0700 (PDT) X-Google-Smtp-Source: AMsMyM4EXOUjNlIxUYR8PDvF9w7H8/QWuUsvimzUEYEqnOFqRnuqhuZtDCzI4Vu/740apEttSzlakQ== X-Received: by 2002:a37:92c6:0:b0:6fa:28b2:1e2a with SMTP id u189-20020a3792c6000000b006fa28b21e2amr13574163qkd.9.1667414064758; Wed, 02 Nov 2022 11:34:24 -0700 (PDT) Received: from vschneid.remote.csb ([149.71.65.94]) by smtp.gmail.com with ESMTPSA id w187-20020a3794c4000000b006eed47a1a1esm8757820qkd.134.2022.11.02.11.34.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Nov 2022 11:34:23 -0700 (PDT) From: Valentin Schneider 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 Subject: [RFC PATCH v2 5/8] irq_work: Trace self-IPIs sent via arch_irq_work_raise() Date: Wed, 2 Nov 2022 18:33:33 +0000 Message-Id: <20221102183336.3120536-4-vschneid@redhat.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20221102182949.3119584-1-vschneid@redhat.com> References: <20221102182949.3119584-1-vschneid@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII"; x-default=true X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Juri Lelli , Mark Rutland , Dave Hansen , "Paul E. McKenney" , Peter Zijlstra , Marc Zyngier , Sebastian Andrzej Siewior , Marcelo Tosatti , Russell King , Steven Rostedt , "David S. Miller" , Ingo Molnar , Borislav Petkov , Nicholas Piggin , "H. Peter Anvin" , Guo Ren , Thomas Gleixner , Daniel Bristot de Oliveira , Frederic Weisbecker Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" IPIs sent to remove CPUs via irq_work_queue_on() are now covered by trace_ipi_send_cpumask(), add another instance of the tracepoint to cover self-IPIs. Signed-off-by: Valentin Schneider --- kernel/irq_work.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/kernel/irq_work.c b/kernel/irq_work.c index 7afa40fe5cc43..aec38c294ce68 100644 --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -22,6 +22,8 @@ #include #include +#include + static DEFINE_PER_CPU(struct llist_head, raised_list); static DEFINE_PER_CPU(struct llist_head, lazy_list); static DEFINE_PER_CPU(struct task_struct *, irq_workd); @@ -74,6 +76,16 @@ void __weak arch_irq_work_raise(void) */ } +static inline void irq_work_raise(struct irq_work *work) +{ + if (trace_ipi_send_cpumask_enabled() && arch_irq_work_has_interrupt()) + trace_ipi_send_cpumask(cpumask_of(smp_processor_id()), + _RET_IP_, + work->func); + + arch_irq_work_raise(); +} + /* Enqueue on current CPU, work must already be claimed and preempt disabled */ static void __irq_work_queue_local(struct irq_work *work) { @@ -99,7 +111,7 @@ static void __irq_work_queue_local(struct irq_work *work) /* If the work is "lazy", handle it from next tick if any */ if (!lazy_work || tick_nohz_tick_stopped()) - arch_irq_work_raise(); + irq_work_raise(work); } /* Enqueue the irq work @work on the current CPU */ -- 2.31.1