From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 EB2422FFFBE; Thu, 11 Jun 2026 15:09:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781190542; cv=none; b=cwHg6zmIS6kVgcHcSJdoGvBaZMtyqzmbtYMUkBKR7RjBKq7JH2o5M7dqkgDrJFq0tFgi/X054+fuZG5u9GSvE5CPRpulPGWICyqn3eiMWRraUS78LUq/cxvuaVlOdRklMc0E+k8pYynLJv7rLgrR1cPQRylOAS4DaI0oVLFWxj8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781190542; c=relaxed/simple; bh=u8Z1HwVQ6gNZfFbrHvWxvraaKsKvFg1yRaKyVTFkyd8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cnOcLe4T5Pqp9Ix0jNWmtKnbYeY7o0x95TmTDpQp7/ixbBHJV1jKzdnZ4ETFRpp1P4zcrcRn8lxMAgyNgG2aqnGhoE8m+Vt6u0Xfg21GPK4hZ5Nkq7Cd+syxfLKxGg8qBrW5JdmF+dOi0dfK6icxXfiE41G4mJhytpZEy7av8nA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=b5FSZVvr; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="b5FSZVvr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A2C91F00899; Thu, 11 Jun 2026 15:09:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781190541; bh=0uRLPyI0GfrqF0p32ngwFu1PHDAcTSIvRXBHRBkO/M8=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=b5FSZVvrzfSoSkhd43JnNH9Cw0vj4H5/nANqbIs3pzPcAwkdKmWVfaYoyRIM7gGVm Q8NzYCyXX25Y//naJrf72k7zruYA6BxItvzYO7utF4hv+2yRqlLEpuuWxhuVVMwNGQ 6q1v5onmVgNbJKFerODwmrNHlEorUSkB4Z9Yh27tkX8pxbKbUXN44Li9NVVrvwe3wW 7VS8L8nqCaGyTB7WPg9X8CKZs/NxqLkzNG/zbQAsSc8IWyF9fivxWYIYyYumZrjExu qtT471kIMBDNfSIhwxHyKrKYp2QZaUbPjTfCp9LkyKuZfq17VPDamg2GWdGDiM+AzA c9r0Cz3pSxd8Q== Date: Thu, 11 Jun 2026 12:08:58 -0300 From: Arnaldo Carvalho de Melo To: James Clark Cc: Namhyung Kim , Ian Rogers , Leo Yan , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] perf test: Compile named_threads workload with -O0 Message-ID: References: <20260611-james-cs-unformatted-per-thread-fix-followup-v1-1-3c855d93dba8@linaro.org> 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=us-ascii Content-Disposition: inline In-Reply-To: <20260611-james-cs-unformatted-per-thread-fix-followup-v1-1-3c855d93dba8@linaro.org> On Thu, Jun 11, 2026 at 12:13:46PM +0100, James Clark wrote: > The work loop relies on the compiler not optimizing it away, although > named_threads_work is not static for that reason, the compiler could > still do it. > > Fix it by compiling without optimization. Also add -fno-inline for > consistency and in case anyone wants to look at callstacks. > > Signed-off-by: James Clark > --- > One trailing Sashiko fix from the "perf cs-etm: Queue context packets > for frontend" patch series that has been applied already. I'll add a Fixes tag pointing to that cset, also a reported-by sashiko and a closes, for completeness. Thanks, applying. - Arnaldo > --- > tools/perf/tests/workloads/Build | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/tools/perf/tests/workloads/Build b/tools/perf/tests/workloads/Build > index 75b377934a0e..7bb4b9829ba2 100644 > --- a/tools/perf/tests/workloads/Build > +++ b/tools/perf/tests/workloads/Build > @@ -26,3 +26,4 @@ CFLAGS_datasym.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE > CFLAGS_traploop.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE > CFLAGS_inlineloop.o = -g -O2 > CFLAGS_deterministic.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE > +CFLAGS_named_threads.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE > > --- > base-commit: 7336514f41e75d44782fee7e0990d4195a3d3161 > change-id: 20260611-james-cs-unformatted-per-thread-fix-followup-babf28a4e640 > > Best regards, > -- > James Clark