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[2604:1380:4601:e00::3]) by mx.google.com with ESMTPS id x15-20020a170906b08f00b00a3851c2ab09si1635071ejy.786.2024.02.13.15.14.19 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Feb 2024 15:14:19 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-64519-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3; Authentication-Results: mx.google.com; arc=pass (i=1); spf=pass (google.com: domain of linux-kernel+bounces-64519-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-64519-ouuuleilei=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id 553BD1F24859 for ; Tue, 13 Feb 2024 23:14:19 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 7689E64AA5; Tue, 13 Feb 2024 23:13:11 +0000 (UTC) Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 EC3DF6340F for ; Tue, 13 Feb 2024 23:13:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707865990; cv=none; b=UY0tbgUNxWDzuXvRn1Gq5rwQeSrt6PfgseqeV3czCol5SiK36ul4vx+AIdVgYsdgD2lHVWibTAU/FnU3bUmnLkF+JS586fXWbxMolDANSwFvxVrsElf7hFRhw3mF/HOj/VH3eO+1n3Ldoa2Mtq8rSgacpyK2b7eh9yw5MkkVDAk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707865990; c=relaxed/simple; bh=nLoRFPBJnfn59rTSLi0Dv6V2IC37p4t5fbYO1zZOBXk=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=fFuqMULlFQA5AonNP1Hw+YP9MWg/c/6cUfPB9haOyZecNsnq5Sh51q+tK0HgGJlopFKOC0jtoUxJGlr1IcpFKthzV6G5NO7/c4baNIVDj2LkKiJd15+ibYATl6WX27sqYC9z9wgMntmjykyVC9W/scrtuYApK8V+RmMfNuMKW8I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 88251C433A6; Tue, 13 Feb 2024 23:13:09 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.97) (envelope-from ) id 1ra1z5-000000009Er-3nbe; Tue, 13 Feb 2024 18:14:39 -0500 Message-ID: <20240213231439.765101665@goodmis.org> User-Agent: quilt/0.67 Date: Tue, 13 Feb 2024 18:14:15 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Mete Durlu , Sven Schnelle Subject: [for-linus][PATCH 2/2] tracing: Use ring_buffer_record_is_set_on() in tracer_tracing_is_on() References: <20240213231413.726507543@goodmis.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790827361202162028 X-GMAIL-MSGID: 1790827361202162028 From: Sven Schnelle tracer_tracing_is_on() checks whether record_disabled is not zero. This checks both the record_disabled counter and the RB_BUFFER_OFF flag. Reading the source it looks like this function should only check for the RB_BUFFER_OFF flag. Therefore use ring_buffer_record_is_set_on(). This fixes spurious fails in the 'test for function traceon/off triggers' test from the ftrace testsuite when the system is under load. Link: https://lore.kernel.org/linux-trace-kernel/20240205065340.2848065-1-svens@linux.ibm.com Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Tested-By: Mete Durlu Signed-off-by: Sven Schnelle Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 9ff8a439d674..aa54810e8b56 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1532,7 +1532,7 @@ void disable_trace_on_warning(void) bool tracer_tracing_is_on(struct trace_array *tr) { if (tr->array_buffer.buffer) - return ring_buffer_record_is_on(tr->array_buffer.buffer); + return ring_buffer_record_is_set_on(tr->array_buffer.buffer); return !tr->buffer_disabled; }