From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794707464; b=WEIHrZrrPYUimla1TOXbUNhINPrNCc/KApZL0BUIJlT0GXIx8N5E8A1TUVwAfkecrvLB sBguDu3D6F1OgwJbCfAq4xJnuWSL5R08aYXg4IL/yhVZDhmVym8mPiDJkG/2p/mT7hYLr yeanbBEM/GESD9v/rpalBXga/a9oxHL5ZtxNXzm1IwSAax5+4yT+J2UzkTlXLUZ4D+7gn zfAhEE4Cm5cRV9OWF8CAgTsU8i+m94y+9KjkJ8C7LYvr9f1+56vI6C4pggwb7CisHfc5o BIm/mNIzM1OaTLq9PlIzfYt4L+GgYUUcPfBCJwhs7nETH2jlRlK37V3/jUL2pN0QvPw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794707464; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=cfZzyLvJnl6UWMFbEE6DoHZ9osZ0WviajBuqWlPFKmo=; b=Hw8Ei48q1/GKWzI/b09WgkPO9rSP1uMmKg2+WjaYLuPtGugchC7miRYJhJlqeGdga2pQ UX1cEi+7dD0u9+pbndPAwDhGCc0a8/Jjjz4HFMilKIoSpPz2HjN/CgeHm8/poP+IPj6LG AErBnCPpOcOsG+Ntj8KCxSLntA4wRICw+iEEO8+Suip7uE2sxJkvsaZBbhUlAVFircT4v YX1B9YnHu+t1wmczWeUqGkoNO4lk4A57yEkgQCd+z/0/Ap/hTqoyqPEap2Jg2q2Wi5plD cwIAi/bk2LPt7dy0VdZR83N00W+qnrv+QB5Q7pVwibWvKhFE0Eo4aHd1vOXtTkSGBAg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=V57e+6CX; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C74AA606A327 for ; Sun, 15 Nov 2026 01:51:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=V57e+6CX Received: by smtp.kernel.org (Postfix) with ESMTPSA id 28A6C1F000C4; Sun, 15 Nov 2026 01:51:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794707464; bh=cfZzyLvJnl6UWMFbEE6DoHZ9osZ0WviajBuqWlPFKmo=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=V57e+6CXixXL8APASkCg2ng6VDPIetSeWIoCl64GgSR0X1kJowyedFir10t7VcoTe g9PJOdN1YyJk2FqSH0KWB4TQ24X+HzmqoxJTQ1BNI7Wc/Ar3ECBArPjW2Q808/giSD AReUW4rDnwI4tHezvhkFF4xcuSUF5CM1yxOrzBVuaTmE/MD2jH7XX0DMCKBwWZrTkn NOdq+6lgrOdLjjssNkAjbQrcak84/mPBdiM1ifwfIceTSUCpSsfZ2QL+ImGe7K7egk kV/3Y65FWdpIkNX6ef4pVN89rXXNY0e09La0kSr7LjAQA+somQ7PcH1v1D9HdqAzMs QuFn5yS5grDzw== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v3 01/12] perf scripts: Add a coverage harness for perf Reply-To: sashiko-reviews@lists.linux.dev To: "Arnaldo Carvalho de Melo" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20261115014102.2879372-2-acme@kernel.org> References: <20261115014102.2879372-1-acme@kernel.org> <20261115014102.2879372-2-acme@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Sun, 15 Nov 2026 01:51:03 +0000 X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > Build perf with clang source based coverage, run the complete perf test > suite, merge the raw profiles and report line and function coverage for > perf, optionally against a baseline. This is pahole's > coverage/coverage.sh + coverage-diff.sh merged into one script, wired as > 'make -C tools/perf coverage' and listed in 'make help'. >=20 > Without -f the report lists the files with the most uncovered lines, > which is where new tests should try to get more coverage; -t narrows > the tests, -f focuses on specific files, --html writes a browsable > report and --table/-T, also available as 'make -C tools/perf > coverage-table', prints the last run as an ASCII table with the > per-file line and function coverage, like pahole's coverage_table.py. >=20 > The build can be split from the test run: 'make -C tools/perf > coverage-prep' builds the instrumented perf and records the build > [ ... ] >=20 > The run above was unprivileged, so tests that need root are skipped or > fail; the report still points at the gaps. >=20 > Signed-off-by: Arnaldo Carvalho de Melo Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261115014102.2879= 372-1-acme@kernel.org?part=3D1