Commit c0070112 authored by Anshuman Khandual's avatar Anshuman Khandual Committed by Suzuki K Poulose
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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: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: default avatarJames Clark <james.clark@arm.com>
Signed-off-by: default avatarSuzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20230802063658.1069813-1-anshuman.khandual@arm.com
parent 04e8429c

drivers/hwtracing/coresight/coresight-trbe.h

+1 −1
Original line number Diff line number Diff line
@@ -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)