linux-kernel - [PATCH v5] perf tools: Add missing case value

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Date:   Fri, 22 Mar 2019 13:22:55 +0800
From:   Solomon Tan <solomonbobstoner@...il.com>
To:     mathieu.poirier@...aro.org
Cc:     peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        suzuki.poulose@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...hat.com, namhyung@...nel.org, robert.walker@....com,
        acme@...hat.com, solomonbstoner@...tonmail.ch
Subject: [PATCH v5] perf tools: Add missing case value

The following error was thrown when compiling `tools/perf` using OpenCSD
v0.11.1. This patch fixes said error.
```
  CC       util/intel-pt-decoder/intel-pt-log.o
  CC       util/cs-etm-decoder/cs-etm-decoder.o
util/cs-etm-decoder/cs-etm-decoder.c: In function
‘cs_etm_decoder__buffer_range’:
util/cs-etm-decoder/cs-etm-decoder.c:370:2: error: enumeration value
‘OCSD_INSTR_WFI_WFE’ not handled in switch [-Werror=switch-enum]
  switch (elem->last_i_type) {
  ^~~~~~
  CC       util/intel-pt-decoder/intel-pt-decoder.o
cc1: all warnings being treated as errors
```

Because `OCSD_INSTR_WFI_WFE` case was added only in v0.11.0, the minimum
required OpenCSD library version for this patch is no longer v0.10.0.

Signed-off-by: Solomon Tan <solomonbobstoner@...il.com>
---
 tools/build/feature/test-libopencsd.c           | 4 ++--
 tools/perf/util/cs-etm-decoder/cs-etm-decoder.c | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/build/feature/test-libopencsd.c b/tools/build/feature/test-libopencsd.c
index d68eb4fb40cc..2b0e02c38870 100644
--- a/tools/build/feature/test-libopencsd.c
+++ b/tools/build/feature/test-libopencsd.c
@@ -4,9 +4,9 @@
 /*
  * Check OpenCSD library version is sufficient to provide required features
  */
-#define OCSD_MIN_VER ((0 << 16) | (10 << 8) | (0))
+#define OCSD_MIN_VER ((0 << 16) | (11 << 8) | (0))
 #if !defined(OCSD_VER_NUM) || (OCSD_VER_NUM < OCSD_MIN_VER)
-#error "OpenCSD >= 0.10.0 is required"
+#error "OpenCSD >= 0.11.0 is required"
 #endif
 
 int main(void)
diff --git a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
index ba4c623cd8de..39fe21e1cf93 100644
--- a/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
+++ b/tools/perf/util/cs-etm-decoder/cs-etm-decoder.c
@@ -387,6 +387,7 @@ cs_etm_decoder__buffer_range(struct cs_etm_decoder *decoder,
 		break;
 	case OCSD_INSTR_ISB:
 	case OCSD_INSTR_DSB_DMB:
+	case OCSD_INSTR_WFI_WFE:
 	case OCSD_INSTR_OTHER:
 	default:
 		packet->last_instr_taken_branch = false;
-- 
2.19.1