From: Leo Yan <leo.yan@arm.com>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Namhyung Kim <namhyung@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
James Clark <james.clark@linaro.org>,
Mark Rutland <mark.rutland@arm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>,
linux-perf-users@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Leo Yan <leo.yan@arm.com>
Subject: [PATCH v4 6/8] perf sort: Sort disabled and full predicated flags
Date: Tue, 06 Jan 2026 11:56:51 +0000 [thread overview]
Message-ID: <20260106-perf_support_arm_spev1-3-v4-6-bb2d143b3860@arm.com> (raw)
In-Reply-To: <20260106-perf_support_arm_spev1-3-v4-0-bb2d143b3860@arm.com>
According to the Arm ARM (ARM DDI 0487, L.a), section D18.2.6
"Events packet", apart from the empty predicate and partial
predicates, an SVE or SME operation can be predicate-disabled
or full predicated.
To provide complete results, introduce two predicate types for
these cases.
Signed-off-by: Leo Yan <leo.yan@arm.com>
---
tools/perf/util/sample.h | 13 +++++++++----
tools/perf/util/sort.c | 15 ++++++++++-----
2 files changed, 19 insertions(+), 9 deletions(-)
diff --git a/tools/perf/util/sample.h b/tools/perf/util/sample.h
index 504256474f22fa8ec647429d182a6d04f8d05c39..c0ba8dc6c055597e6b01c28eab7178d5c2b3c3ed 100644
--- a/tools/perf/util/sample.h
+++ b/tools/perf/util/sample.h
@@ -68,8 +68,8 @@ struct aux_sample {
struct simd_flags {
u8 arch: 2, /* architecture (isa) */
- pred: 2, /* predication */
- resv: 4; /* reserved */
+ pred: 3, /* predication */
+ resv: 3; /* reserved */
};
/* simd architecture flags */
@@ -81,8 +81,13 @@ enum simd_op_flags {
};
/* simd predicate flags */
-#define SIMD_OP_FLAGS_PRED_PARTIAL 0x01 /* partial predicate */
-#define SIMD_OP_FLAGS_PRED_EMPTY 0x02 /* empty predicate */
+enum simd_pred_flags {
+ SIMD_OP_FLAGS_PRED_NONE = 0x0, /* Not available */
+ SIMD_OP_FLAGS_PRED_PARTIAL, /* partial predicate */
+ SIMD_OP_FLAGS_PRED_EMPTY, /* empty predicate */
+ SIMD_OP_FLAGS_PRED_FULL, /* full predicate */
+ SIMD_OP_FLAGS_PRED_DISABLED, /* disabled predicate */
+};
struct perf_sample {
u64 ip;
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index e8f793eed33f78b7688b3f949e8254cbb64c3709..72ad35559bc2ff89ba65208bb18d4db3224be034 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -207,18 +207,23 @@ static int hist_entry__simd_snprintf(struct hist_entry *he, char *bf,
size_t size, unsigned int width __maybe_unused)
{
const char *name;
+ const char *pred_str = ".";
if (!he->simd_flags.arch)
return repsep_snprintf(bf, size, "");
name = hist_entry__get_simd_name(&he->simd_flags);
- if (he->simd_flags.pred & SIMD_OP_FLAGS_PRED_EMPTY)
- return repsep_snprintf(bf, size, "[e] %s", name);
- else if (he->simd_flags.pred & SIMD_OP_FLAGS_PRED_PARTIAL)
- return repsep_snprintf(bf, size, "[p] %s", name);
+ if (he->simd_flags.pred == SIMD_OP_FLAGS_PRED_EMPTY)
+ pred_str = "e";
+ else if (he->simd_flags.pred == SIMD_OP_FLAGS_PRED_PARTIAL)
+ pred_str = "p";
+ else if (he->simd_flags.pred == SIMD_OP_FLAGS_PRED_DISABLED)
+ pred_str = "d";
+ else if (he->simd_flags.pred == SIMD_OP_FLAGS_PRED_FULL)
+ pred_str = "f";
- return repsep_snprintf(bf, size, "[.] %s", name);
+ return repsep_snprintf(bf, size, "[%s] %s", pred_str, name);
}
struct sort_entry sort_simd = {
--
2.34.1
next prev parent reply other threads:[~2026-01-06 11:57 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-06 11:56 [PATCH v4 0/8] perf arm_spe: Extend operations Leo Yan
2026-01-06 11:56 ` [PATCH v4 1/8] perf/uapi: Extend data source fields Leo Yan
2026-01-06 11:56 ` [PATCH v4 2/8] tools/include: Sync uapi/linux/perf.h with the kernel sources Leo Yan
2026-01-06 11:56 ` [PATCH v4 3/8] perf mem: Print extended fields Leo Yan
2026-01-06 11:56 ` [PATCH v4 4/8] perf arm_spe: Set extended fields in data source Leo Yan
2026-01-06 11:56 ` [PATCH v4 5/8] perf sort: Support sort ASE and SME Leo Yan
2026-01-06 11:56 ` Leo Yan [this message]
2026-01-06 11:56 ` [PATCH v4 7/8] perf report: Update document for SIMD flags Leo Yan
2026-01-06 11:56 ` [PATCH v4 8/8] perf arm_spe: Improve SIMD flags setting Leo Yan
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