Message ID | 20221102182949.3119584-1-vschneid@redhat.com |
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Headers | show
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Wed, 02 Nov 2022 11:30:40 -0700 (PDT) Received: from vschneid.remote.csb ([149.71.65.94]) by smtp.gmail.com with ESMTPSA id s16-20020a05620a29d000b006cec8001bf4sm9133847qkp.26.2022.11.02.11.30.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Nov 2022 11:30:39 -0700 (PDT) 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: "Paul E. McKenney" <paulmck@kernel.org>, Steven Rostedt <rostedt@goodmis.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: [RFC PATCH v2 0/8] Generic IPI sending tracepoint Date: Wed, 2 Nov 2022 18:29:41 +0000 Message-Id: <20221102182949.3119584-1-vschneid@redhat.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221102_113759_826919_AC25C97C X-CRM114-Status: GOOD ( 19.59 ) X-Spam-Score: -0.4 (/) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Background ========== Detecting IPI *reception* is relatively easy, e.g. using trace_irq_handler_{entry,exit} or even just function-trace flush_smp_call_function_queue() for SMP calls. Figuring out their *origin*, is trickier as there is no generic tracepoint tied to e.g. smp_call_function(): Content analysis details: (-0.4 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [170.10.133.124 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 SPF_NONE SPF: sender does not publish an SPF Record -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [170.10.133.124 listed in wl.mailspike.net] -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.2 DKIMWL_WL_HIGH DKIMwl.org - High trust sender X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors <linux-snps-arc.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-snps-arc>, <mailto:linux-snps-arc-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-snps-arc/> List-Post: <mailto:linux-snps-arc@lists.infradead.org> List-Help: <mailto:linux-snps-arc-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-snps-arc>, <mailto:linux-snps-arc-request@lists.infradead.org?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" <linux-snps-arc-bounces@lists.infradead.org> Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org |
Series |
Generic IPI sending tracepoint
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On Wed, 2 Nov 2022 18:29:41 +0000 Valentin Schneider <vschneid@redhat.com> wrote: > This is incomplete, just looking at arm64 there's more IPI types that aren't > covered: > > IPI_CPU_STOP, > IPI_CPU_CRASH_STOP, > IPI_TIMER, > IPI_WAKEUP, > > ... But it feels like a good starting point. For the tracing portions: Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> -- Steve