From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 0D58837DAAA; Wed, 3 Jun 2026 17:50:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780509055; cv=none; b=h3QrFTQ84CGvAmSvplblEg9V9bhqkK21fu9oJVfAlZuYkCpJBgqDzr7Z8bH7OGmTWOirepW4++JuIR2QIAQCXiKCA/ivoDVMZIn4ry2Q4TYUb1YNnIgKjtrVOvr/7s4KEpXb9hzsM3KrdFtePUly74RF5ty6MCLcEAOYNEPAZww= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780509055; c=relaxed/simple; bh=B5Lqtd1oa0rlp+ydOSNsdkfEIB24JYJistvdJ8DWLc8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=EIKzNoYWsqId4z1Sg/xIOT0ztL7/yOONv9/ynnTelz06n6M7ugv4A8Bnn0UwyrirBQpGEh6VOwqWRAU2RcAI1Rip30P6GB1L/8wlpRdCxYnNt5YtJgJi7UEI9g2HnONqyfpJR5VWkiJt8ibEGVAuLFo9kYYJr2ew9io+XacEcLc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=Y0sdcHkM; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="Y0sdcHkM" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6D01032E4; Wed, 3 Jun 2026 10:50:48 -0700 (PDT) Received: from localhost (e132581.arm.com [10.1.196.87]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id DAA493F632; Wed, 3 Jun 2026 10:50:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1780509053; bh=B5Lqtd1oa0rlp+ydOSNsdkfEIB24JYJistvdJ8DWLc8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Y0sdcHkMQOlmliCSSMgxKSjEkEdJ13Owb0hAh4ohcOimLGuGYKLCNzG7F8d5ZHFWb KhO70aTFKams8gEu+NOFsGnab5N5d4QYUdadn3SS2+QpG4XnH362H6P3WW+QmUJnZ7 L5h58FEJTTJsP4ONkQ/Ck1S37LbKTGjLysYOn7p0= Date: Wed, 3 Jun 2026 18:50:50 +0100 From: Leo Yan To: James Clark Cc: Suzuki K Poulose , Mike Leach , Arnaldo Carvalho de Melo , Namhyung Kim , Jiri Olsa , Ian Rogers , Amir Ayupov , Jonathan Corbet , Shuah Khan , Paschalis Mpeis , coresight@lists.linaro.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Arnaldo Carvalho de Melo , linux-doc@vger.kernel.org Subject: Re: [PATCH v2 17/18] perf test cs-etm: Speed up disassembly test Message-ID: <20260603175050.GI101133@e132581.arm.com> References: <20260602-james-cs-context-tracking-fix-v2-0-85b5ce6f55c6@linaro.org> <20260602-james-cs-context-tracking-fix-v2-17-85b5ce6f55c6@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260602-james-cs-context-tracking-fix-v2-17-85b5ce6f55c6@linaro.org> On Tue, Jun 02, 2026 at 03:26:59PM +0100, James Clark wrote: > We can use exit snapshot to limit the amount of trace to decode here > too. Also each call to objdump is quite expensive on kcore so limit it > to 2 samples instead of 30. We only want to see if there is no data at > all. > > Signed-off-by: James Clark Reviewed-by: Leo Yan