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Fri, 07 Oct 2022 08:45:52 -0700 (PDT) X-Google-Smtp-Source: AMsMyM53pm8pDMF8tAvcpsQYCd9DEpAeQROExvsQCCHMjVMrngwHmXq+ii3h5Ne2OaugbAyINh7v6Q== X-Received: by 2002:a05:600c:458d:b0:3c3:bf4e:5c60 with SMTP id r13-20020a05600c458d00b003c3bf4e5c60mr1331352wmo.189.1665157552172; Fri, 07 Oct 2022 08:45:52 -0700 (PDT) Received: from vschneid.remote.csb ([149.71.65.94]) by smtp.gmail.com with ESMTPSA id i18-20020adfb652000000b0022e38c93195sm2339428wre.34.2022.10.07.08.45.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Oct 2022 08:45:51 -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 1/5] trace: Add trace_ipi_send_{cpu, cpumask} Date: Fri, 7 Oct 2022 16:45:29 +0100 Message-Id: <20221007154533.1878285-1-vschneid@redhat.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20221007154145.1877054-1-vschneid@redhat.com> References: <20221007154145.1877054-1-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-Mailman-Approved-At: Sat, 08 Oct 2022 12:28:34 +1100 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" trace_ipi_raise is unsuitable for generically tracing IPI sources; add a variant of it that takes a callsite and a CPU. Define a macro helper for handling IPIs sent to multiple CPUs. Signed-off-by: Valentin Schneider --- include/trace/events/ipi.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/include/trace/events/ipi.h b/include/trace/events/ipi.h index 0be71dad6ec0..fd2f2aeb36fe 100644 --- a/include/trace/events/ipi.h +++ b/include/trace/events/ipi.h @@ -35,6 +35,33 @@ TRACE_EVENT(ipi_raise, TP_printk("target_mask=%s (%s)", __get_bitmask(target_cpus), __entry->reason) ); +TRACE_EVENT(ipi_send_cpu, + + TP_PROTO(unsigned long callsite, unsigned int cpu), + + TP_ARGS(callsite, cpu), + + TP_STRUCT__entry( + __field(unsigned long, callsite) + __field(unsigned int, cpu) + ), + + TP_fast_assign( + __entry->callsite = callsite; + __entry->cpu = cpu; + ), + + TP_printk("callsite=%pS target_cpu=%d", (void *)__entry->callsite, __entry->cpu) +); + +#define trace_ipi_send_cpumask(callsite, mask) do { \ + if (static_key_false(&__tracepoint_ipi_send_cpu.key)) { \ + int cpu; \ + for_each_cpu(cpu, mask) \ + trace_ipi_send_cpu(callsite, cpu); \ + } \ +} while (0) + DECLARE_EVENT_CLASS(ipi_handler, TP_PROTO(const char *reason), -- 2.31.1