Commit 9e7a00ec authored by Ilkka Koskinen's avatar Ilkka Koskinen Committed by Arnaldo Carvalho de Melo
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perf arm-spe: Add support for SPE Data Source packet on AmpereOne 



Decode SPE Data Source packets on AmpereOne. The field is IMPDEF.

Reviewed-by: default avatarLeo Yan <leo.yan@arm.com>
Signed-off-by: default avatarIlkka Koskinen <ilkka@os.amperecomputing.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Graham Woodward <graham.woodward@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linux.dev>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20241108202946.16835-3-ilkka@os.amperecomputing.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent ccdc9e9c

tools/perf/util/arm-spe-decoder/arm-spe-decoder.h

+9 −0
Original line number Diff line number Diff line
@@ -67,6 +67,15 @@ enum arm_spe_common_data_source { 
	ARM_SPE_COMMON_DS_DRAM		= 0xe,

};



enum arm_spe_ampereone_data_source {

	ARM_SPE_AMPEREONE_LOCAL_CHIP_CACHE_OR_DEVICE    = 0x0,

	ARM_SPE_AMPEREONE_SLC                           = 0x3,

	ARM_SPE_AMPEREONE_REMOTE_CHIP_CACHE             = 0x5,

	ARM_SPE_AMPEREONE_DDR                           = 0x7,

	ARM_SPE_AMPEREONE_L1D                           = 0x8,

	ARM_SPE_AMPEREONE_L2D                           = 0x9,

};



struct arm_spe_record {

	enum arm_spe_sample_type type;

	int err;

tools/perf/util/arm-spe.c

+44 −0
Original line number Diff line number Diff line
@@ -455,6 +455,11 @@ static const struct midr_range common_ds_encoding_cpus[] = { 
	{},

};



static const struct midr_range ampereone_ds_encoding_cpus[] = {

	MIDR_ALL_VERSIONS(MIDR_AMPERE1A),

	{},

};



static void arm_spe__sample_flags(struct arm_spe_queue *speq)

{

	const struct arm_spe_record *record = &speq->decoder->record;
@@ -544,8 +549,47 @@ static void arm_spe__synth_data_source_common(const struct arm_spe_record *recor 
	}

}



/*

 * Source is IMPDEF. Here we convert the source code used on AmpereOne cores

 * to the common (Neoverse, Cortex) to avoid duplicating the decoding code.

 */

static void arm_spe__synth_data_source_ampereone(const struct arm_spe_record *record,

						 union perf_mem_data_src *data_src)

{

	struct arm_spe_record common_record;



	switch (record->source) {

	case ARM_SPE_AMPEREONE_LOCAL_CHIP_CACHE_OR_DEVICE:

		common_record.source = ARM_SPE_COMMON_DS_PEER_CORE;

		break;

	case ARM_SPE_AMPEREONE_SLC:

		common_record.source = ARM_SPE_COMMON_DS_SYS_CACHE;

		break;

	case ARM_SPE_AMPEREONE_REMOTE_CHIP_CACHE:

		common_record.source = ARM_SPE_COMMON_DS_REMOTE;

		break;

	case ARM_SPE_AMPEREONE_DDR:

		common_record.source = ARM_SPE_COMMON_DS_DRAM;

		break;

	case ARM_SPE_AMPEREONE_L1D:

		common_record.source = ARM_SPE_COMMON_DS_L1D;

		break;

	case ARM_SPE_AMPEREONE_L2D:

		common_record.source = ARM_SPE_COMMON_DS_L2;

		break;

	default:

		pr_warning_once("AmpereOne: Unknown data source (0x%x)\n",

				record->source);

		return;

	}



	common_record.op = record->op;

	arm_spe__synth_data_source_common(&common_record, data_src);

}



static const struct data_source_handle data_source_handles[] = {

	DS(common_ds_encoding_cpus, data_source_common),

	DS(ampereone_ds_encoding_cpus, data_source_ampereone),

};



static void arm_spe__synth_memory_level(const struct arm_spe_record *record,