linux-kernel - [PATCH 1/3] perf, tools: Handle events including .c and .o

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Date:   Wed,  5 Oct 2016 12:47:10 -0700
From:   Andi Kleen <andi@...stfloor.org>
To:     acme@...nel.org
Cc:     sukadev@...ux.vnet.ibm.com, jolsa@...hat.com,
        linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>,
        wangnan0@...wei.com
Subject: [PATCH 1/3] perf, tools: Handle events including .c and .o

From: Andi Kleen <ak@...ux.intel.com>

This is a generic bug fix, but it helps with Sukadev's JSON event tree
where such events can happen.

Any event inclduing a .c/.o/.bpf currently triggers BPF compilation or loading
and then an error.  This can happen for some Intel JSON events, which cannot
be used.

Fix the scanner to only match for .o or .c or .bpf at the end.
This will prevent loading multiple BPF scripts separated with comma,
but I assume this is acceptable.

Cc: wangnan0@...wei.com
Cc: sukadev@...ux.vnet.ibm.com
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/util/parse-events.l | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 9f43fda2570f..377147088a46 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -183,8 +183,8 @@ modifier_bp	[rwx]{1,3}
 		}

 {event_pmu}	|
-{bpf_object}	|
-{bpf_source}	|
+({bpf_object}$)	|
+({bpf_source}$)	|
 {event}		{
 			BEGIN(INITIAL);
 			REWIND(1);
-- 
2.5.5