From mboxrd@z Thu Jan 1 00:00:00 1970 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 EB0B2487BF; Wed, 5 Feb 2025 14:32:08 +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=1738765929; cv=none; b=pq+Zgm3dnBdH8GkhRw28i+1pLdaK29cY6eiFBx9fk5sBDroNFRz4GEXGLBXWCflC0OR+LW7QkbYAT2jdfmClcGcJheskImpk8SFvSdRb7GlliH/JSJD3vezQulol/SgsFCvkvqr9DAmjh5+RzKWkq+dkSrUpAJWwGdA1qU0UXj0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738765929; c=relaxed/simple; bh=bEQlQnZeCGybdHrWxr40hLZnQ9EfGW0UA40iVN3ofyk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bjos+d5OCrkf1KGyUlLXrfR5ORSpHnlATct+5mvCPMqhGJx55bc6W/qMH1+rRYOOuGnVcsE3GqqW2L4lmgqmXyK8smiLXst1GzwyjhBxSdNwQ+O1NXjFA/ivF1OFE7oZ3cfmrUxStqusRT0YtmFqnUwZTjdX3i7ax3EDJdIn8i8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=avhk+v+A; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="avhk+v+A" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2635EC4CED1; Wed, 5 Feb 2025 14:32:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1738765928; bh=bEQlQnZeCGybdHrWxr40hLZnQ9EfGW0UA40iVN3ofyk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=avhk+v+AiCUMzixr1aqGYlfhRz9jRLIbELBASvReZgXEVTwzIMDV9lu7a/JRJHmVs pGWxLWuqTKbw5VR/XcI75g6JOeFDQpkadb48+nwFp/b55uI76LktALDsNdur/gx0ZE MPXnG5FJ879tX5/h7kvlGEIzaOLVxcw9O2pVyqx8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Namhyung Kim , Adrian Hunter , Ian Rogers , Christophe Leroy , James Clark , Jiri Olsa , Kan Liang , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH 6.12 268/590] perf top: Dont complain about lack of vmlinux when not resolving some kernel samples Date: Wed, 5 Feb 2025 14:40:23 +0100 Message-ID: <20250205134505.527447357@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250205134455.220373560@linuxfoundation.org> References: <20250205134455.220373560@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Arnaldo Carvalho de Melo [ Upstream commit 058b38ccd2af9e5c95590b018e8425fa148d7aca ] Recently we got a case where a kernel sample wasn't being resolved due to a bug that was not setting the end address on kernel functions implemented in assembly (see Link: tag), and then those were not being found by machine__resolve() -> map__find_symbol(). So we ended up with: # perf top --stdio PerfTop: 0 irqs/s kernel: 0% exact: 0% lost: 0/0 drop: 0/0 [cycles/P] ----------------------------------------------------------------------- Warning: A vmlinux file was not found. Kernel samples will not be resolved. ^Z [1]+ Stopped perf top --stdio # But then resolving all other kernel symbols. So just fixup the logic to only print that warning when there are no symbols in the kernel map. Fixes: d88205db9caa0e9d ("perf dso: Add dso__has_symbols() method") Reviewed-by: Namhyung Kim Cc: Adrian Hunter Cc: Ian Rogers Cc: Christophe Leroy Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Link: https://lore.kernel.org/lkml/Z3buKhcCsZi3_aGb@x1 Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/builtin-top.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 724a793863212..ca3e8eca6610e 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -809,7 +809,7 @@ static void perf_event__process_sample(const struct perf_tool *tool, * invalid --vmlinux ;-) */ if (!machine->kptr_restrict_warned && !top->vmlinux_warned && - __map__is_kernel(al.map) && map__has_symbols(al.map)) { + __map__is_kernel(al.map) && !map__has_symbols(al.map)) { if (symbol_conf.vmlinux_name) { char serr[256]; -- 2.39.5