From patchwork Tue Jan 31 08:50:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Zijlstra X-Patchwork-Id: 13122542 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7FE3BC636CD for ; Tue, 31 Jan 2023 08:56:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232173AbjAaI4Z (ORCPT ); Tue, 31 Jan 2023 03:56:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231697AbjAaI4A (ORCPT ); Tue, 31 Jan 2023 03:56:00 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 615664B764; Tue, 31 Jan 2023 00:51:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=dIxm+aCWThEzSn6DIW8FvWBq3c9pv2ibQNS0mHEtmHY=; b=P99yUkPKlFO6Em1noB0wAC0mbH VVTyTjchkZs8oTDX6DrLsSDzY4w1iEM7Eq83RPSTC6hbJWvJvsD7eNhZ6CKLRYtCAAjCdFdS+HfI1 aX4w//t5QEWYp1BLw0UGYf+SnVlyPZDFZr+8ujXvuZH/6C0CnmipvNW6SUlpSmcuGWKGNZMwyJ/C8 osew0SUGCAOdIAXP1ZD/FUbFzZME+QADr0FIX1E5t0otYJ4Dusdj+9abhDnbB2ZqoTh+qFCJmYY3R D1CwEnmecBYG7aaYsUp+dFCskwvnPYeyrAx9mqsIK0clEyzBgdS0EIpPCyxgDKlzHyzLEU+GDj/kH qNiRlCmQ==; Received: from j130084.upc-j.chello.nl ([24.132.130.84] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1pMmLe-00BA4r-Iv; Tue, 31 Jan 2023 08:50:39 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id BDED43002BF; Tue, 31 Jan 2023 09:50:36 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id A1741208358FD; Tue, 31 Jan 2023 09:50:36 +0100 (CET) Date: Tue, 31 Jan 2023 09:50:36 +0100 From: Peter Zijlstra To: mingo@kernel.org Cc: will@kernel.org, boqun.feng@gmail.com, mark.rutland@arm.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, seanjc@google.com, pbonzini@redhat.com, jgross@suse.com, srivatsa@csail.mit.edu, amakhalov@vmware.com, pv-drivers@vmware.com, wanpengli@tencent.com, vkuznets@redhat.com, boris.ostrovsky@oracle.com, rafael@kernel.org, daniel.lezcano@linaro.org, lpieralisi@kernel.org, frederic@kernel.org, paulmck@kernel.org, rostedt@goodmis.org, mhiramat@kernel.org, longman@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-pm@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: [PATCH v2.1 4/9] tracing, preempt: Squash _rcuidle tracing Message-ID: References: <20230126150829.087606759@infradead.org> <20230126151323.526275416@infradead.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230126151323.526275416@infradead.org> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Extend commit 9aedeaed6fc6 ("tracing, hardirq: No moar _rcuidle() tracing") to also cover trace_preempt_{on,off}() which were mysteriously untouched. Fixes: 9aedeaed6fc6 ("tracing, hardirq: No moar _rcuidle() tracing") Reported-by: Mark Rutland Signed-off-by: Peter Zijlstra (Intel) Tested-by: Mark Rutland Link: https://lkml.kernel.org/r/Y9D5AfnOukWNOZ5q@hirez.programming.kicks-ass.net --- kernel/trace/trace_preemptirq.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) --- a/kernel/trace/trace_preemptirq.c +++ b/kernel/trace/trace_preemptirq.c @@ -15,10 +15,6 @@ #define CREATE_TRACE_POINTS #include -#ifdef CONFIG_TRACE_IRQFLAGS -/* Per-cpu variable to prevent redundant calls when IRQs already off */ -static DEFINE_PER_CPU(int, tracing_irq_cpu); - /* * Use regular trace points on architectures that implement noinstr * tooling: these calls will only happen with RCU enabled, which can @@ -33,6 +29,10 @@ static DEFINE_PER_CPU(int, tracing_irq_c #define trace(point) if (!in_nmi()) trace_##point##_rcuidle #endif +#ifdef CONFIG_TRACE_IRQFLAGS +/* Per-cpu variable to prevent redundant calls when IRQs already off */ +static DEFINE_PER_CPU(int, tracing_irq_cpu); + /* * Like trace_hardirqs_on() but without the lockdep invocation. This is * used in the low level entry code where the ordering vs. RCU is important @@ -100,15 +100,13 @@ NOKPROBE_SYMBOL(trace_hardirqs_off); void trace_preempt_on(unsigned long a0, unsigned long a1) { - if (!in_nmi()) - trace_preempt_enable_rcuidle(a0, a1); + trace(preempt_enable)(a0, a1); tracer_preempt_on(a0, a1); } void trace_preempt_off(unsigned long a0, unsigned long a1) { - if (!in_nmi()) - trace_preempt_disable_rcuidle(a0, a1); + trace(preempt_disable)(a0, a1); tracer_preempt_off(a0, a1); } #endif