linux-kernel - [tip:perf/core] perf list: Add support for PERF_COUNT_SW_BPF

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Message-ID: <tip-uya354upi3eprsey6mi5962d@git.kernel.org>
Date:	Fri, 18 Dec 2015 00:57:36 -0800
From:	tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	tglx@...utronix.de, mingo@...nel.org, linux-kernel@...r.kernel.org,
	hpa@...or.com, adrian.hunter@...el.com, ast@...nel.org,
	jolsa@...hat.com, wangnan0@...wei.com, dsahern@...il.com,
	acme@...hat.com, namhyung@...nel.org
Subject: [tip:perf/core] perf list: Add support for PERF_COUNT_SW_BPF_OUT

Commit-ID:  d643b5aba84884de96d2ea4a902f8b0d9cf4b1b0
Gitweb:     http://git.kernel.org/tip/d643b5aba84884de96d2ea4a902f8b0d9cf4b1b0
Author:     Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Fri, 27 Nov 2015 15:54:33 -0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 16 Dec 2015 16:43:10 -0300

perf list: Add support for PERF_COUNT_SW_BPF_OUT

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@...nel.org>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Alexei Starovoitov <ast@...nel.org>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/n/tip-uya354upi3eprsey6mi5962d@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.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 e48d9da..40ae92a 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) \
--
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