linux-kernel - [PATCH AUTOSEL 4.4 70/71] perf intel-bts: Does not support AUX area sampling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20191210223316.14988-70-sashal@kernel.org>
Date:   Tue, 10 Dec 2019 17:33:15 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.4 70/71] perf intel-bts: Does not support AUX area sampling

From: Adrian Hunter <adrian.hunter@...el.com>

[ Upstream commit 32a1ece4bdbde24734ab16484bad7316f03fc42d ]

Add an error message because Intel BTS does not support AUX area
sampling.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Link: http://lore.kernel.org/lkml/20191115124225.5247-16-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/perf/arch/x86/util/auxtrace.c  | 2 ++
 tools/perf/arch/x86/util/intel-bts.c | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/tools/perf/arch/x86/util/auxtrace.c b/tools/perf/arch/x86/util/auxtrace.c
index 7a7805583e3fe..ab641cfc8c2bb 100644
--- a/tools/perf/arch/x86/util/auxtrace.c
+++ b/tools/perf/arch/x86/util/auxtrace.c
@@ -35,6 +35,8 @@ struct auxtrace_record *auxtrace_record__init_intel(struct perf_evlist *evlist,
 
 	intel_pt_pmu = perf_pmu__find(INTEL_PT_PMU_NAME);
 	intel_bts_pmu = perf_pmu__find(INTEL_BTS_PMU_NAME);
+	if (intel_bts_pmu)
+		intel_bts_pmu->auxtrace = true;
 
 	if (evlist) {
 		evlist__for_each(evlist, evsel) {
diff --git a/tools/perf/arch/x86/util/intel-bts.c b/tools/perf/arch/x86/util/intel-bts.c
index 9b94ce5209170..9d83a7f3496cb 100644
--- a/tools/perf/arch/x86/util/intel-bts.c
+++ b/tools/perf/arch/x86/util/intel-bts.c
@@ -119,6 +119,11 @@ static int intel_bts_recording_options(struct auxtrace_record *itr,
 	const struct cpu_map *cpus = evlist->cpus;
 	bool privileged = geteuid() == 0 || perf_event_paranoid() < 0;
 
+	if (opts->auxtrace_sample_mode) {
+		pr_err("Intel BTS does not support AUX area sampling\n");
+		return -EINVAL;
+	}
+
 	btsr->evlist = evlist;
 	btsr->snapshot_mode = opts->auxtrace_snapshot_mode;
 
-- 
2.20.1