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 82327233735; Wed, 2 Apr 2025 09:05:19 +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=1743584721; cv=none; b=hUqZcOBK1g+O6JVhvfffl8XI7SmbEoZWhIC95KZv6YtgkeJ5SFXcOVu6oE5S/4HZ2uXgTztYC51bMS8fMjIxSUtKRl8PA9HF/7SI7baciWOo725XQ+F3IclwchAEIvm2MAa2aXGKBYh0QASI9+NEPRJrlbSYXoEKyD4F1Ryz/RU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743584721; c=relaxed/simple; bh=WIjK/QckphRthxHzdJMzRERbUuHAWoMS84T01vfg1/E=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=fFU9qJMM8drbF8J+HR3PMoNzBN+wQlEpv+Hk5gWJ6lbSP8ZJ9IJg7myv+xAQpDOkhWHnP8Y655Ea2FpfTkbyD8K4FTX8t6HY7VqUXJVZSRExWlPl9uu5Zy88VkNulFteSHl1ax1ulqXNqIrICO5WQMbDzu5Ge9t3uOeTHufmv7o= 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; 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 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 B259412FC; Wed, 2 Apr 2025 02:05:21 -0700 (PDT) Received: from localhost (e132581.arm.com [10.1.196.87]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 41B233F694; Wed, 2 Apr 2025 02:05:18 -0700 (PDT) Date: Wed, 2 Apr 2025 10:05:16 +0100 From: Leo Yan To: Ian Rogers Cc: Arnaldo Carvalho de Melo , Namhyung Kim , Adrian Hunter , "Liang, Kan" , James Clark , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] perf tests switch-tracking: Fix timestamp comparison Message-ID: <20250402090516.GG115840@e132581.arm.com> References: <20250331172759.115604-1-leo.yan@arm.com> <20250401091422.GA115840@e132581.arm.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Tue, Apr 01, 2025 at 12:54:12PM -0700, Ian Rogers wrote: > On Tue, Apr 1, 2025 at 2:14 AM Leo Yan wrote: > > > > On Mon, Mar 31, 2025 at 01:18:31PM -0700, Ian Rogers wrote: > > > > [...] > > > > > I'm reminded of a Java check I wrote for this: > > > > Nice short article. > > > > > In clang -Wshorten-64-to-32 looks to cover this. I'll see if we can > > > clean those warnings up a bit. > > > > I checked a bit and seems GCC has no this flag, but it makes sense for > > me to enable the flag for Clang. > > > > > Reviewed-by: Ian Rogers > > > > Thanks a lot, Ian. > > I made a small variation to the change in: > https://lore.kernel.org/lkml/20250401182347.3422199-10-irogers@google.com/ > to avoid a subtract and just directly compare the values. Fine by me. I reviewed your patch, the direct comparing LGTM. Thanks, Leo