Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1293499

[PATCH 1/2] perf list: Add support for PERF_COUNT_SW_BPF_OUT

Show all headers | View raw

From: Arnaldo Carvalho de Melo <acme@redhat.com>

When PERF_COUNT_SW_BPF_OUTPUT was added to the kernel we should've
added it to tools/perf, where it is used just to list events.

This ended up causing a segfault in commands like "perf list stall".

Fix it by adding that new software counter.

A patch to robustify perf to not segfault when the next counter gets
added in the kernel will follow this one.

Reported-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: William Cohen <wcohen@redhat.com>
Link: http://lkml.kernel.org/n/tip-uya354upi3eprsey6mi5962d@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/parse-events.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index e48d9da75707..40ae92a8673c 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -124,6 +124,10 @@ struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
 		.symbol = "dummy",
 		.alias  = "",
 	},
+	[PERF_COUNT_SW_BPF_OUTPUT] = {
+		.symbol = "bpf-output",
+		.alias  = "",
+	},
 };
 
 #define __PERF_EVENT_FIELD(config, name) \
-- 
2.1.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[GIT PULL 0/2] perf/urgent fix Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-17 02:00 +0100
  [PATCH 2/2] perf list: Robustify event printing routine Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-17 02:00 +0100
  [PATCH 1/2] perf list: Add support for PERF_COUNT_SW_BPF_OUT Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-12-17 02:00 +0100
  Re: [GIT PULL 0/2] perf/urgent fix Ingo Molnar <mingo@kernel.org> - 2015-12-18 09:50 +0100

csiph-web