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Date: Fri, 22 Nov 2019 11:56:46 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ingo Molnar <mingo@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>
Cc: Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
Clark Williams <williams@...hat.com>,
linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 01/26] perf map: Move maj/min/ino/ino_generation to separate struct
From: Arnaldo Carvalho de Melo <acme@...hat.com>
And this patch highlights where these fields are being used: in the sort
order where it uses it to compare maps and classify samples taking into
account not just the DSO, but those DSO id fields.
I think these should be used to differentiate DSOs with the same name
but different 'struct dso_id' fields, i.e. these fields should move to
'struct dso' and then be used as part of the key when doing lookups for
DSOs, in addition to the DSO name.
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Link: https://lkml.kernel.org/n/tip-8v5isitqy0dup47nnwkpc80f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/builtin-report.c | 2 +-
tools/perf/util/map.c | 8 ++++----
tools/perf/util/map.h | 14 +++++++++++---
tools/perf/util/sort.c | 24 ++++++++++++------------
4 files changed, 28 insertions(+), 20 deletions(-)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 585805f51f15..04c197d3beea 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -771,7 +771,7 @@ static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
map->prot & PROT_EXEC ? 'x' : '-',
map->flags & MAP_SHARED ? 's' : 'p',
map->pgoff,
- map->ino, map->dso->name);
+ map->dso_id.ino, map->dso->name);
}
return printed;
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 67e0f81416cb..4f50b1b2961f 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -162,10 +162,10 @@ struct map *map__new(struct machine *machine, u64 start, u64 len,
vdso = is_vdso_map(filename);
no_dso = is_no_dso_memory(filename);
- map->maj = d_maj;
- map->min = d_min;
- map->ino = ino;
- map->ino_generation = ino_gen;
+ map->dso_id.maj = d_maj;
+ map->dso_id.min = d_min;
+ map->dso_id.ino = ino;
+ map->dso_id.ino_generation = ino_gen;
map->prot = prot;
map->flags = flags;
nsi = nsinfo__get(thread->nsinfo);
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index 0a6c45f85cd9..70d87dcbe35d 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -18,6 +18,16 @@ struct map_groups;
struct machine;
struct evsel;
+/*
+ * Data about backing storage DSO, comes from PERF_RECORD_MMAP2 meta events
+ */
+struct dso_id {
+ u32 maj;
+ u32 min;
+ u64 ino;
+ u64 ino_generation;
+};
+
struct map {
union {
struct rb_node rb_node;
@@ -30,9 +40,6 @@ struct map {
u32 prot;
u64 pgoff;
u64 reloc;
- u32 maj, min; /* only valid for MMAP2 record */
- u64 ino; /* only valid for MMAP2 record */
- u64 ino_generation;/* only valid for MMAP2 record */
/* ip -> dso rip */
u64 (*map_ip)(struct map *, u64);
@@ -40,6 +47,7 @@ struct map {
u64 (*unmap_ip)(struct map *, u64);
struct dso *dso;
+ struct dso_id dso_id;
refcount_t refcnt;
u32 flags;
};
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 6b626e6b111e..bc589438cd12 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1212,17 +1212,17 @@ sort__dcacheline_cmp(struct hist_entry *left, struct hist_entry *right)
if (!l_map) return -1;
if (!r_map) return 1;
- if (l_map->maj > r_map->maj) return -1;
- if (l_map->maj < r_map->maj) return 1;
+ if (l_map->dso_id.maj > r_map->dso_id.maj) return -1;
+ if (l_map->dso_id.maj < r_map->dso_id.maj) return 1;
- if (l_map->min > r_map->min) return -1;
- if (l_map->min < r_map->min) return 1;
+ if (l_map->dso_id.min > r_map->dso_id.min) return -1;
+ if (l_map->dso_id.min < r_map->dso_id.min) return 1;
- if (l_map->ino > r_map->ino) return -1;
- if (l_map->ino < r_map->ino) return 1;
+ if (l_map->dso_id.ino > r_map->dso_id.ino) return -1;
+ if (l_map->dso_id.ino < r_map->dso_id.ino) return 1;
- if (l_map->ino_generation > r_map->ino_generation) return -1;
- if (l_map->ino_generation < r_map->ino_generation) return 1;
+ if (l_map->dso_id.ino_generation > r_map->dso_id.ino_generation) return -1;
+ if (l_map->dso_id.ino_generation < r_map->dso_id.ino_generation) return 1;
/*
* Addresses with no major/minor numbers are assumed to be
@@ -1234,8 +1234,8 @@ sort__dcacheline_cmp(struct hist_entry *left, struct hist_entry *right)
if ((left->cpumode != PERF_RECORD_MISC_KERNEL) &&
(!(l_map->flags & MAP_SHARED)) &&
- !l_map->maj && !l_map->min && !l_map->ino &&
- !l_map->ino_generation) {
+ !l_map->dso_id.maj && !l_map->dso_id.min &&
+ !l_map->dso_id.ino && !l_map->dso_id.ino_generation) {
/* userspace anonymous */
if (left->thread->pid_ > right->thread->pid_) return -1;
@@ -1271,8 +1271,8 @@ static int hist_entry__dcacheline_snprintf(struct hist_entry *he, char *bf,
if ((he->cpumode != PERF_RECORD_MISC_KERNEL) &&
map && !(map->prot & PROT_EXEC) &&
(map->flags & MAP_SHARED) &&
- (map->maj || map->min || map->ino ||
- map->ino_generation))
+ (map->dso_id.maj || map->dso_id.min ||
+ map->dso_id.ino || map->dso_id.ino_generation))
level = 's';
else if (!map)
level = 'X';
--
2.21.0
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