Message ID | 20221007154533.1878285-1-vschneid@redhat.com |
---|---|
State | New |
Headers | show
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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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221007_084600_937662_4421DF14 X-CRM114-Status: GOOD ( 11.69 ) 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: 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 <vschneid@redhat.com> --- include/trace/events/ipi.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) 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 -0.1 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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expand
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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),
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 <vschneid@redhat.com> --- include/trace/events/ipi.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)