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perf arm-spe: Refactor operation packet handling 

Defines macros for operation packet header and formats (support sub
classes for 'other', 'branch', 'load and store', etc).  Uses these
macros for operation packet decoding and dumping.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Will Deacon <will@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Al Grant <Al.Grant@arm.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Dave Martin <Dave.Martin@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wei Li <liwei391@huawei.com>
Link: https://lore.kernel.org/r/20201119152441.6972-14-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Leo Yan 2020-11-19 23:24:38 +08:00 committed by Arnaldo Carvalho de Melo
parent 7488ffc4d9
commit e771218f32
2 changed files with 37 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.c
View File

@ -144,7 +144,7 @@ static int arm_spe_get_op_type(const unsigned char *buf, size_t len,
struct arm_spe_pkt *packet)
{
packet->type = ARM_SPE_OP_TYPE;
packet->index = buf[0] & 0x3;
packet->index = SPE_OP_PKT_HDR_CLASS(buf[0]);
return arm_spe_get_payload(buf, len, 0, packet);
}
@ -328,31 +328,33 @@ static int arm_spe_pkt_desc_op_type(const struct arm_spe_pkt *packet,
int err = 0;
switch (packet->index) {
case 0:
case SPE_OP_PKT_HDR_CLASS_OTHER:
arm_spe_pkt_out_string(&err, &buf, &buf_len,
payload & 0x1 ? "COND-SELECT" : "INSN-OTHER");
payload & SPE_OP_PKT_COND ? "COND-SELECT" : "INSN-OTHER");
break;
case 1:
case SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC:
arm_spe_pkt_out_string(&err, &buf, &buf_len,
payload & 0x1 ? "ST" : "LD");
if (payload & 0x2) {
if (payload & 0x4)
if (SPE_OP_PKT_IS_LDST_ATOMIC(payload)) {
if (payload & SPE_OP_PKT_AT)
arm_spe_pkt_out_string(&err, &buf, &buf_len, " AT");
if (payload & 0x8)
if (payload & SPE_OP_PKT_EXCL)
arm_spe_pkt_out_string(&err, &buf, &buf_len, " EXCL");
if (payload & 0x10)
if (payload & SPE_OP_PKT_AR)
arm_spe_pkt_out_string(&err, &buf, &buf_len, " AR");
} else if (payload & 0x4) {
} else if (SPE_OP_PKT_LDST_SUBCLASS_GET(payload) ==
SPE_OP_PKT_LDST_SUBCLASS_SIMD_FP) {
arm_spe_pkt_out_string(&err, &buf, &buf_len, " SIMD-FP");
}
break;
case 2:
case SPE_OP_PKT_HDR_CLASS_BR_ERET:
arm_spe_pkt_out_string(&err, &buf, &buf_len, "B");
if (payload & 0x1)
if (payload & SPE_OP_PKT_COND)
arm_spe_pkt_out_string(&err, &buf, &buf_len, " COND");
if (payload & 0x2)
if (SPE_OP_PKT_IS_INDIRECT_BRANCH(payload))
arm_spe_pkt_out_string(&err, &buf, &buf_len, " IND");
break;

23
tools/perf/util/arm-spe-decoder/arm-spe-pkt-decoder.h
View File

@ -105,6 +105,29 @@ enum arm_spe_events {
EV_EMPTY_PREDICATE = 18,
};
/* Operation packet header */
#define SPE_OP_PKT_HDR_CLASS(h) ((h) & GENMASK_ULL(1, 0))
#define SPE_OP_PKT_HDR_CLASS_OTHER 0x0
#define SPE_OP_PKT_HDR_CLASS_LD_ST_ATOMIC 0x1
#define SPE_OP_PKT_HDR_CLASS_BR_ERET 0x2
#define SPE_OP_PKT_COND BIT(0)
#define SPE_OP_PKT_LDST_SUBCLASS_GET(v) ((v) & GENMASK_ULL(7, 1))
#define SPE_OP_PKT_LDST_SUBCLASS_GP_REG 0x0
#define SPE_OP_PKT_LDST_SUBCLASS_SIMD_FP 0x4
#define SPE_OP_PKT_LDST_SUBCLASS_UNSPEC_REG 0x10
#define SPE_OP_PKT_LDST_SUBCLASS_NV_SYSREG 0x30
#define SPE_OP_PKT_IS_LDST_ATOMIC(v) (((v) & (GENMASK_ULL(7, 5) | BIT(1))) == 0x2)
#define SPE_OP_PKT_AR BIT(4)
#define SPE_OP_PKT_EXCL BIT(3)
#define SPE_OP_PKT_AT BIT(2)
#define SPE_OP_PKT_ST BIT(0)
#define SPE_OP_PKT_IS_INDIRECT_BRANCH(v) (((v) & GENMASK_ULL(7, 1)) == 0x2)
const char *arm_spe_pkt_name(enum arm_spe_pkt_type);
int arm_spe_get_packet(const unsigned char *buf, size_t len,