linux-kernel - [PATCH] perf tests: Fix complex event name parsing

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Message-Id: <20180726105502.31670-1-sandipan@linux.ibm.com>
Date:   Thu, 26 Jul 2018 16:25:02 +0530
From:   Sandipan Das <sandipan@...ux.ibm.com>
To:     acme@...nel.org
Cc:     linux-kernel@...r.kernel.org, alexey.budankov@...ux.intel.com,
        jolsa@...hat.com, ravi.bangoria@...ux.vnet.ibm.com,
        naveen.n.rao@...ux.vnet.ibm.com
Subject: [PATCH] perf tests: Fix complex event name parsing

The 'umask' event parameter is unsupported on some architectures
like powerpc64.

This can be observed on a powerpc64le system running Fedora 27 as
shown below.

  # perf test "Parse event definition strings" -v
   6: Parse event definition strings                        :
  --- start ---
  test child forked, pid 45915
  ...
  running test 3 'cpu/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks',period=0x1,event=0x2,umask=0x3/ukp'Invalid event/parameter 'umask'
  Invalid event/parameter 'umask'
  failed to parse event 'cpu/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks',period=0x1,event=0x2,umask=0x3/ukp', err 1, str 'unknown term'
  event syntax error: '..,event=0x2,umask=0x3/ukp'
                                    \___ unknown term

  valid terms: event,mark,pmc,cache_sel,pmcxsel,unit,thresh_stop,thresh_start,combine,thresh_sel,thresh_cmp,sample_mode,config,config1,config2,name,period,freq,branch_type,time,call-graph,stack-size,no-inherit,inherit,max-stack,no-overwrite,overwrite,driver-config

  mem_access -> cpu/event=0x10401e0/
  running test 0 'config=10,config1,config2=3,umask=1'
  test child finished with 1
  ---- end ----
  Parse event definition strings: FAILED!

Fixes: 055f839c5ef0 ("perf tests: Check that complex event name is parsed correctly")
Suggested-by: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Signed-off-by: Sandipan Das <sandipan@...ux.ibm.com>
---
 tools/perf/tests/parse-events.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-events.c
index a36313daec4e..3b97ac018d5a 100644
--- a/tools/perf/tests/parse-events.c
+++ b/tools/perf/tests/parse-events.c
@@ -1690,7 +1690,7 @@ static struct evlist_test test__events_pmu[] = {
 		.id    = 2,
 	},
 	{
-		.name  = "cpu/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks',period=0x1,event=0x2,umask=0x3/ukp",
+		.name  = "cpu/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks',period=0x1,event=0x2/ukp",
 		.check = test__checkevent_complex_name,
 		.id    = 3,
 	}
-- 
2.14.4