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Message-ID: <20250430205548.789750-12-namhyung@kernel.org>
Date: Wed, 30 Apr 2025 13:55:48 -0700
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
Ian Rogers <irogers@...gle.com>,
Kan Liang <kan.liang@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...nel.org>,
LKML <linux-kernel@...r.kernel.org>,
linux-perf-users@...r.kernel.org,
Ravi Bangoria <ravi.bangoria@....com>,
Leo Yan <leo.yan@....com>
Subject: [PATCH 11/11] perf mem: Add 'dtlb' output field
This is a breakdown of perf_mem_data_src.mem_dtlb values. It assumes
PMU drivers would set PERF_MEM_TLB_HIT bit with an appropriate level.
And having PERF_MEM_TLB_MISS means that it failed to find one in any
levels of TLB. For now, it doesn't use PERF_MEM_TLB_{WK,OS} bits.
Also it seems Intel machines don't distinguish L1 or L2 precisely. So I
added ANY_HIT (printed as "L?-Hit") to handle the case.
$ perf mem report -F overhead,dtlb,dso --stdio
...
# --- D-TLB ----
# Overhead L?-Hit Miss Shared Object
# ........ .............. .................
#
67.03% 99.5% 0.5% [unknown]
31.23% 99.2% 0.8% [kernel.kallsyms]
1.08% 97.8% 2.2% [i915]
0.36% 100.0% 0.0% [JIT] tid 6853
0.12% 100.0% 0.0% [drm]
0.05% 100.0% 0.0% [drm_kms_helper]
0.05% 100.0% 0.0% [ext4]
0.02% 100.0% 0.0% [aesni_intel]
0.02% 100.0% 0.0% [crc32c_intel]
0.02% 100.0% 0.0% [dm_crypt]
...
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
tools/perf/ui/browsers/hists.c | 3 +++
tools/perf/ui/hist.c | 5 +++++
tools/perf/util/hist.h | 1 +
tools/perf/util/mem-events.c | 27 +++++++++++++++++++++++++++
tools/perf/util/mem-events.h | 9 +++++++++
tools/perf/util/sort.c | 1 +
6 files changed, 46 insertions(+)
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 5b080f5062440246..d26b925e3d7f46af 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1288,6 +1288,7 @@ __HPP_COLOR_MEM_STAT_FN(op, OP)
__HPP_COLOR_MEM_STAT_FN(cache, CACHE)
__HPP_COLOR_MEM_STAT_FN(memory, MEMORY)
__HPP_COLOR_MEM_STAT_FN(snoop, SNOOP)
+__HPP_COLOR_MEM_STAT_FN(dtlb, DTLB)
#undef __HPP_COLOR_PERCENT_FN
#undef __HPP_COLOR_ACC_PERCENT_FN
@@ -1319,6 +1320,8 @@ void hist_browser__init_hpp(void)
hist_browser__hpp_color_mem_stat_memory;
perf_hpp__format[PERF_HPP__MEM_STAT_SNOOP].color =
hist_browser__hpp_color_mem_stat_snoop;
+ perf_hpp__format[PERF_HPP__MEM_STAT_DTLB].color =
+ hist_browser__hpp_color_mem_stat_dtlb;
res_sample_init();
}
diff --git a/tools/perf/ui/hist.c b/tools/perf/ui/hist.c
index 94024dfa8dccf9ba..ed5c40ebd906f076 100644
--- a/tools/perf/ui/hist.c
+++ b/tools/perf/ui/hist.c
@@ -354,6 +354,8 @@ static enum mem_stat_type hpp__mem_stat_type(struct perf_hpp_fmt *fmt)
return PERF_MEM_STAT_MEMORY;
case PERF_HPP__MEM_STAT_SNOOP:
return PERF_MEM_STAT_SNOOP;
+ case PERF_HPP__MEM_STAT_DTLB:
+ return PERF_MEM_STAT_DTLB;
default:
break;
}
@@ -653,6 +655,7 @@ HPP_MEM_STAT_FNS(op, OP)
HPP_MEM_STAT_FNS(cache, CACHE)
HPP_MEM_STAT_FNS(memory, MEMORY)
HPP_MEM_STAT_FNS(snoop, SNOOP)
+HPP_MEM_STAT_FNS(dtlb, DTLB)
static int64_t hpp__nop_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
struct hist_entry *a __maybe_unused,
@@ -760,6 +763,7 @@ struct perf_hpp_fmt perf_hpp__format[] = {
HPP__MEM_STAT_PRINT_FNS("Cache", cache, CACHE),
HPP__MEM_STAT_PRINT_FNS("Memory", memory, MEMORY),
HPP__MEM_STAT_PRINT_FNS("Snoop", snoop, SNOOP),
+ HPP__MEM_STAT_PRINT_FNS("D-TLB", dtlb, DTLB),
};
struct perf_hpp_list perf_hpp_list = {
@@ -1118,6 +1122,7 @@ void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
case PERF_HPP__MEM_STAT_CACHE:
case PERF_HPP__MEM_STAT_MEMORY:
case PERF_HPP__MEM_STAT_SNOOP:
+ case PERF_HPP__MEM_STAT_DTLB:
fmt->len = MEM_STAT_LEN * MEM_STAT_PRINT_LEN;
break;
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index c2d286c4ba395674..355198fd70281f43 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -592,6 +592,7 @@ enum {
PERF_HPP__MEM_STAT_CACHE,
PERF_HPP__MEM_STAT_MEMORY,
PERF_HPP__MEM_STAT_SNOOP,
+ PERF_HPP__MEM_STAT_DTLB,
PERF_HPP__MAX_INDEX
};
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index ddcfc6500d77a9e6..3e9131e05348a996 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -868,6 +868,19 @@ int mem_stat_index(const enum mem_stat_type mst, const u64 val)
default:
return MEM_STAT_SNOOP_OTHER;
}
+ case PERF_MEM_STAT_DTLB:
+ switch (src.mem_dtlb) {
+ case PERF_MEM_TLB_L1 | PERF_MEM_TLB_HIT:
+ return MEM_STAT_DTLB_L1_HIT;
+ case PERF_MEM_TLB_L2 | PERF_MEM_TLB_HIT:
+ return MEM_STAT_DTLB_L2_HIT;
+ case PERF_MEM_TLB_L1 | PERF_MEM_TLB_L2 | PERF_MEM_TLB_HIT:
+ return MEM_STAT_DTLB_ANY_HIT;
+ default:
+ if (src.mem_dtlb & PERF_MEM_TLB_MISS)
+ return MEM_STAT_DTLB_MISS;
+ return MEM_STAT_DTLB_OTHER;
+ }
default:
break;
}
@@ -942,6 +955,20 @@ const char *mem_stat_name(const enum mem_stat_type mst, const int idx)
default:
return "Other";
}
+ case PERF_MEM_STAT_DTLB:
+ switch (idx) {
+ case MEM_STAT_DTLB_L1_HIT:
+ return "L1-Hit";
+ case MEM_STAT_DTLB_L2_HIT:
+ return "L2-Hit";
+ case MEM_STAT_DTLB_ANY_HIT:
+ return "L?-Hit";
+ case MEM_STAT_DTLB_MISS:
+ return "Miss";
+ case MEM_STAT_DTLB_OTHER:
+ default:
+ return "Other";
+ }
default:
break;
}
diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h
index 4d8f18583af42550..5b98076904b0b689 100644
--- a/tools/perf/util/mem-events.h
+++ b/tools/perf/util/mem-events.h
@@ -94,6 +94,7 @@ enum mem_stat_type {
PERF_MEM_STAT_CACHE,
PERF_MEM_STAT_MEMORY,
PERF_MEM_STAT_SNOOP,
+ PERF_MEM_STAT_DTLB,
};
#define MEM_STAT_PRINT_LEN 7 /* 1 space + 5 digits + 1 percent sign */
@@ -134,6 +135,14 @@ enum mem_stat_snoop {
MEM_STAT_SNOOP_OTHER,
};
+enum mem_stat_dtlb {
+ MEM_STAT_DTLB_L1_HIT,
+ MEM_STAT_DTLB_L2_HIT,
+ MEM_STAT_DTLB_ANY_HIT,
+ MEM_STAT_DTLB_MISS,
+ MEM_STAT_DTLB_OTHER,
+};
+
int mem_stat_index(const enum mem_stat_type mst, const u64 data_src);
const char *mem_stat_name(const enum mem_stat_type mst, const int idx);
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 51a210d874327d3a..8efafa7c10822ee9 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -2627,6 +2627,7 @@ static struct hpp_dimension hpp_sort_dimensions[] = {
DIM_MEM(PERF_HPP__MEM_STAT_CACHE, "cache"),
DIM_MEM(PERF_HPP__MEM_STAT_MEMORY, "memory"),
DIM_MEM(PERF_HPP__MEM_STAT_SNOOP, "snoop"),
+ DIM_MEM(PERF_HPP__MEM_STAT_DTLB, "dtlb"),
};
#undef DIM_MEM
--
2.49.0.906.g1f30a19c02-goog
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