diff options
| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2023-08-02 08:36:58 +0200 |
|---|---|---|
| committer | Suzuki K Poulose <suzuki.poulose@arm.com> | 2023-08-02 13:53:28 +0200 |
| commit | c00701125cf379f8ce9a4c98cb3cbf9edc3a5672 (patch) | |
| tree | 67aca65bf562f94babc439b1e57e79e717fe928b /drivers/hwtracing | |
| parent | coresight: Fix all W=1 build warnings (diff) | |
| download | linux-c00701125cf379f8ce9a4c98cb3cbf9edc3a5672.tar.xz linux-c00701125cf379f8ce9a4c98cb3cbf9edc3a5672.zip | |
coresight: trbe: Directly use ID_AA64DFR0_EL1_TraceBuffer_IMP
is_trbe_available() checks for the TRBE support via extracting TraceBuffer
field value from ID_AA64DFR0_EL1, and ensures that it is implemented. This
replaces the open encoding '0b0001' with 'ID_AA64DFR0_EL1_TraceBuffer_IMP'
which is now available via sysreg tools. Functional change is not intended.
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: James Clark <james.clark@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20230802063658.1069813-1-anshuman.khandual@arm.com
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-trbe.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/coresight-trbe.h b/drivers/hwtracing/coresight/coresight-trbe.h index 77cbb5c63878..e915e749be55 100644 --- a/drivers/hwtracing/coresight/coresight-trbe.h +++ b/drivers/hwtracing/coresight/coresight-trbe.h @@ -23,7 +23,7 @@ static inline bool is_trbe_available(void) unsigned int trbe = cpuid_feature_extract_unsigned_field(aa64dfr0, ID_AA64DFR0_EL1_TraceBuffer_SHIFT); - return trbe >= 0b0001; + return trbe >= ID_AA64DFR0_EL1_TraceBuffer_IMP; } static inline bool is_trbe_enabled(void) |