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 C59933D25B2; Wed, 30 Sep 2026 19:16:47 +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=1790795809; cv=none; b=YaezhhJDwOVyY0RHnllA2LFBbg82uQg+0IL7Dj6RIgrxRYrEy+MuGOzUNpj0e/kN8ZKGu9wCjnwhbVb0E8u3vS0P2fZHykT3/kmDu7mmUMDKbPbudqV1TvmpuZS4nMM0PnCWjsg2PQaMqLje0AcgHBZq57BugUgZQJVux4QizS8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790795809; c=relaxed/simple; bh=h7pyC+iDbOqmz5SwKZxan47rDFE/ny4HmcWARRpZ8/o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WXKkzWdVJO0pBwmdareY++sHX/wOpj2YMz2zqISHYO9KJO/OUJRnnExzV6Vp0JOu1PObhfy8DPh3JmjfKjDv2PF0EWsa+3hXDWOqaSNqVUmi2dMNkWobTXhh5wkunZvrmqqG7aBf4RXM3IW1SlVO2WlZMH5ghDEnYkdUotGy2cU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ww8DlQ4v; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ww8DlQ4v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27BB31F000FF; Wed, 30 Sep 2026 19:16:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790795807; bh=zXitmCQXBk6Sh1VuZUT5TVnR6XRz4gnL5y2MFNsVBUI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ww8DlQ4vTWNyrTMnKUcyPnXOlLfNBjFCAjzrqZOMFqkVQ9VOQ5FjxBiz+Tx9lrjik BSXNQN06LjRXsBg1lmBSW32518JMIgd5BfLkzIxF79QFXeaGhSTPRmiVbOWb0zP9KL umsFB0Eyzdqpy+nH6Z8xJb1UYnYfTsA6w6aZgUJo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ian Rogers , Adrian Hunter , Alexander Shishkin , Ingo Molnar , James Clark , Jiri Olsa , Kan Liang , Mark Rutland , Namhyung Kim , Peter Zijlstra , Weilin Wang , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH 6.6 0690/1193] perf evsel: Add per-thread warning for EOPNOTSUPP open failues Date: Wed, 30 Sep 2026 17:22:54 +0200 Message-ID: <20260930152449.576581510@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260930152434.301151190@linuxfoundation.org> References: <20260930152434.301151190@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ian Rogers [ Upstream commit f0869f31562bde2ed9131665f8f76ef7a3983383 ] The mrvl_ddr_pmu will return EOPNOTSUPP if opened in per-thread mode. Give a warning for this similar to EINVAL. Doing this better supports metric testing with limited permissions when the mrvl_ddr_pmu is present, as the failure to open causes the test to skip and not fail. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Weilin Wang Link: https://lore.kernel.org/r/20250412004704.2297939-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/util/evsel.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 6d1327f8c6043..ff9ad7637562a 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -3047,6 +3047,10 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target, return scnprintf(msg, size, "%s", "No hardware sampling interrupt available.\n"); #endif + if (!target__has_cpu(target)) + return scnprintf(msg, size, + "Unsupported event (%s) in per-thread mode, enable system wide with '-a'.", + evsel__name(evsel)); break; case EBUSY: if (find_process("oprofiled")) -- 2.53.0