From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C8D14468F for ; Fri, 7 Oct 2022 15:45:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1665157554; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LMgaXogbXPhOabUcxt7UADYdICMU0udr545Ze04p+j4=; b=Ccdd1y68C2ekmrFHqSG9jbEK3A1XBnnspQPMR5rK0O1F03ZbM5GN1PYYXtela+4BdUnNe+ +bCgOflR/x6wjJYj0OjU0B3tcU8Pdj0R6VB1IqMALJltYpm0cMk0ndshRHhjqzz5nCNJ3b xF1+eZRVpEZdqMZu3ozwaqOUc1wYQOE= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_128_GCM_SHA256) id us-mta-47-WD5UmrzNO6GxH3CYMgVDYw-1; Fri, 07 Oct 2022 11:45:53 -0400 X-MC-Unique: WD5UmrzNO6GxH3CYMgVDYw-1 Received: by mail-wm1-f69.google.com with SMTP id b7-20020a05600c4e0700b003bde2d860d1so2841102wmq.8 for ; Fri, 07 Oct 2022 08:45:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=LMgaXogbXPhOabUcxt7UADYdICMU0udr545Ze04p+j4=; b=ts+D0SbW0YxUGDzmeARQcSY0sEm2Fg4Zo9FqaEaJmdu9O+oUOVDnxMzIaCJsIXTu/D o/h5dRfUbWxmIwWThKjWKdCCgadu87oVLA9wnyuqo41+1y3d+xOmsxBrEFsETlBvj0RU FNYy1vaziXAEurEvHgetB6oNhGnaGRHz5kIRcMWwYHCe7CqrYctoxBm5FMZyRZKRGb9n V8VhC0ZsK3fpZcNc4luUSBvTksfNgoxtRl4s3FnSUDqWsP6nP+kjeJeCrHI6WQ7/jU8k uHJRnKc7S2Rvbz2/Cp3N4VDoxUoJedLPNoK1ayE0PveRfbcr3rl++bB/a0kpUP6t4Kf5 PkNQ== X-Gm-Message-State: ACrzQf0aPFzg9zdZLChyVDoeku6xm2Ni4dhFsEhdfQXgerBWMrVQUCPj 7ga3akqJFjC/J+xScrNCQjVrTXcwBrmcsrXN43MFoVc2iiAjIeEqyPGcFL5Yy85NzCJ87q1TKR2 LZd1/uBMTlsv8CigawcC5 X-Received: by 2002:a05:600c:458d:b0:3c3:bf4e:5c60 with SMTP id r13-20020a05600c458d00b003c3bf4e5c60mr1331386wmo.189.1665157552453; 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 Cc: "Paul E. McKenney" , Steven Rostedt , Peter Zijlstra , Thomas Gleixner , Sebastian Andrzej Siewior , Juri Lelli , Daniel Bristot de Oliveira , Marcelo Tosatti , Frederic Weisbecker , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Marc Zyngier , Mark Rutland , Russell King , Nicholas Piggin , Guo Ren , "David S. Miller" 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> Precedence: bulk X-Mailing-List: loongarch@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: 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 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