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| author |   Mike Leach <mike.leach@linaro.org> | 2017-08-02 10:22:02 -0600 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-28 16:05:48 +0200 |
| commit | 557587bede858929eef14c6c2447fe140161bf5a (patch) | |
| tree | 05eaac701ebffe5da5cd5ad0a5745bab773db288 /drivers/hwtracing/coresight/coresight-etm.h | |
| parent | coresight: pmu: Adds return stack option to perf coresight pmu (diff) | |
| download | linux-dev-557587bede858929eef14c6c2447fe140161bf5a.tar.xz linux-dev-557587bede858929eef14c6c2447fe140161bf5a.zip | |
coresight: ptm: Adds trace return stack option programming for PTM.
Adds handling to program the return stack option into PTM hardware if
specified in the perf command line.
If option is not supported by the hardware then it will be ignored.
This allows capture to move between core/ETM combinations that have the
hardware support to those that do not.
Signed-off-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-etm.h')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm.h b/drivers/hwtracing/coresight/coresight-etm.h index ad063d7444e1..70b0a248c321 100644 --- a/drivers/hwtracing/coresight/coresight-etm.h +++ b/drivers/hwtracing/coresight/coresight-etm.h @@ -106,6 +106,7 @@ #define ETMTECR1_START_STOP BIT(25) /* ETMCCER - 0x1E8 */ #define ETMCCER_TIMESTAMP BIT(22) +#define ETMCCER_RETSTACK BIT(23) #define ETM_MODE_EXCLUDE BIT(0) #define ETM_MODE_CYCACC BIT(1) |