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perf arm_spe: Decode GCS operation

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Decode a load or store from a GCS operation and the associated "common"
field.

After:

  .  00000000:  49 44                                           LD GCS COMM
  .  00000002:  b2 18 3c d7 83 00 80 ff ff                      VA 0xffff800083d73c18
  .  0000000b:  9a 00 00                                        LAT 0 XLAT
  .  0000000e:  43 00                                           DATA-SOURCE 0

Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Leo Yan
2025-11-12 18:24:29 +00:00
committed by Namhyung Kim
parent b61ca7219d
commit b4eaece3d9
2 changed files with 8 additions and 0 deletions
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4
tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
View File

@@ -394,6 +394,10 @@ static int arm_spe_pkt_desc_op_type(const struct arm_spe_pkt *packet,
arm_spe_pkt_out_string(&err, &buf, &buf_len, " PRED");
if (payload & SPE_OP_PKT_SVE_SG)
arm_spe_pkt_out_string(&err, &buf, &buf_len, " SG");
} else if (SPE_OP_PKT_LDST_SUBCLASS_GCS(payload)) {
arm_spe_pkt_out_string(&err, &buf, &buf_len, " GCS");
if (payload & SPE_OP_PKT_GCS_COMM)
arm_spe_pkt_out_string(&err, &buf, &buf_len, " COMM");
}
break;
case SPE_OP_PKT_HDR_CLASS_BR_ERET:

4
tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
View File

@@ -154,6 +154,10 @@ enum arm_spe_events {
#define SPE_OP_PKT_SVE_PRED BIT(2)
#define SPE_OP_PKT_SVE_FP BIT(1)
#define SPE_OP_PKT_LDST_SUBCLASS_GCS(v) (((v) & (GENMASK_ULL(7, 3) | BIT(1))) == 0x40)
#define SPE_OP_PKT_GCS_COMM BIT(2)
#define SPE_OP_PKT_CR_MASK GENMASK_ULL(4, 3)
#define SPE_OP_PKT_CR_BL(v) (FIELD_GET(SPE_OP_PKT_CR_MASK, (v)) == 1)
#define SPE_OP_PKT_CR_RET(v) (FIELD_GET(SPE_OP_PKT_CR_MASK, (v)) == 2)