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Date: Wed, 10 Jan 2018 22:29:39 -0800
From: tip-bot for Arnaldo Carvalho de Melo <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: hpa@...or.com, linux-kernel@...r.kernel.org, jolsa@...nel.org,
wangnan0@...wei.com, adrian.hunter@...el.com, tglx@...utronix.de,
dsahern@...il.com, acme@...hat.com, mingo@...nel.org,
namhyung@...nel.org
Subject: [tip:perf/core] perf report: Introduce --mmaps
Commit-ID: 6439d7d16c94324300eb392ed85e3632e489e197
Gitweb: https://git.kernel.org/tip/6439d7d16c94324300eb392ed85e3632e489e197
Author: Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Tue, 9 Jan 2018 15:25:03 -0300
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 10 Jan 2018 12:46:49 -0300
perf report: Introduce --mmaps
Similar to --tasks, producing the same output plus /proc/<PID>/maps
similar lines for each mmap record present in a perf.data file.
Please note that not all mmaps are stored, for instance, some of the
non-executable mmaps are only stored when 'perf record --data' is used,
when the user wants to resolve data accesses in addition to asking for
executable mmaps to get the DSO with symtabs.
E.g.:
# perf record sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.018 MB perf.data (7 samples) ]
[root@...et ~]# perf report --mmaps
# pid tid ppid comm
0 0 -1 |swapper
4137 4137 -1 |sleep
5628a35a1000-5628a37aa000 r-xp 00000000 3147148 /usr/bin/sleep
7fb65ad51000-7fb65b134000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
7fb65b134000-7fb65b35e000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
7ffd94b9f000-7ffd94ba1000 r-xp 00000000 0 [vdso]
#
# perf record sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.019 MB perf.data (8 samples) ]
# perf report --mmaps
# pid tid ppid comm
0 0 -1 |swapper
4161 4161 -1 |sleep
55afae69a000-55afae8a3000 r-xp 00000000 3147148 /usr/bin/sleep
7f569f00d000-7f569f3f0000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
7f569f3f0000-7f569f61a000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
7fff6fffe000-7fff70000000 r-xp 00000000 0 [vdso]
#
# perf record time sleep 1
0.00user 0.00system 0:01.00elapsed 0%CPU (0avgtext+0avgdata 2156maxresident)k
0inputs+0outputs (0major+73minor)pagefaults 0swaps
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.019 MB perf.data (14 samples) ]
# perf report --mmaps
# pid tid ppid comm
0 0 -1 |swapper
4281 4281 -1 |time
560560dca000-560560fcf000 r-xp 00000000 3190458 /usr/bin/time
7fc175196000-7fc175579000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
7fc175579000-7fc1757a3000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
7ffc924f6000-7ffc924f8000 r-xp 00000000 0 [vdso]
4282 4282 4281 | sleep
560560dca000-560560fcf000 r-xp 00000000 3190458 /usr/bin/time
564b4de3c000-564b4e045000 r-xp 00000000 3147148 /usr/bin/sleep
7f6a5a716000-7f6a5aaf9000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
7f6a5aaf9000-7f6a5ad23000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
7fc175196000-7fc175579000 r-xp 00000000 3149795 /usr/lib64/libc-2.26.so
7fc175579000-7fc1757a3000 r-xp 00000000 3149715 /usr/lib64/ld-2.26.so
7ffc924f6000-7ffc924f8000 r-xp 00000000 0 [vdso]
7ffcec7e6000-7ffcec7e8000 r-xp 00000000 0 [vdso]
#
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: https://lkml.kernel.org/n/tip-zulwdlg5rfowogr1qznorvvc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/Documentation/perf-report.txt | 9 +++++-
tools/perf/builtin-report.c | 50 +++++++++++++++++++++++++++++---
2 files changed, 54 insertions(+), 5 deletions(-)
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 856c3c7..63d0db3 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -457,6 +457,13 @@ include::itrace.txt[]
will be printed. Each entry is function name or file/line. Enabled by
default, disable with --no-inline.
+--mmaps::
+ Show --tasks output plus mmap information in a format similar to
+ /proc/<PID>/maps.
+
+ Please note that not all mmaps are stored, options affecting which ones
+ are include 'perf record --data', for instance.
+
--stats::
Display overall events statistics without any further processing.
(like the one at the end of the perf report -D command)
@@ -469,4 +476,4 @@ include::callchain-overhead-calculation.txt[]
SEE ALSO
--------
-linkperf:perf-stat[1], linkperf:perf-annotate[1]
+linkperf:perf-stat[1], linkperf:perf-annotate[1], linkperf:perf-record[1]
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 2c7bd85..dd4df9a 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -52,6 +52,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
+#include <linux/mman.h>
#define PTIME_RANGE_MAX 10
@@ -65,6 +66,7 @@ struct report {
bool mem_mode;
bool stats_mode;
bool tasks_mode;
+ bool mmaps_mode;
bool header;
bool header_only;
bool nonany_branch_mode;
@@ -608,6 +610,10 @@ static int stats_print(struct report *rep)
static void tasks_setup(struct report *rep)
{
memset(&rep->tool, 0, sizeof(rep->tool));
+ if (rep->mmaps_mode) {
+ rep->tool.mmap = perf_event__process_mmap;
+ rep->tool.mmap2 = perf_event__process_mmap2;
+ }
rep->tool.comm = perf_event__process_comm;
rep->tool.exit = perf_event__process_exit;
rep->tool.fork = perf_event__process_fork;
@@ -642,14 +648,46 @@ static struct task *tasks_list(struct task *task, struct machine *machine)
return tasks_list(parent_task, machine);
}
+static size_t maps__fprintf_task(struct maps *maps, int indent, FILE *fp)
+{
+ size_t printed = 0;
+ struct rb_node *nd;
+
+ for (nd = rb_first(&maps->entries); nd; nd = rb_next(nd)) {
+ struct map *map = rb_entry(nd, struct map, rb_node);
+
+ printed += fprintf(fp, "%*s %" PRIx64 "-%" PRIx64 " %c%c%c%c %08" PRIx64 " %" PRIu64 " %s\n",
+ indent, "", map->start, map->end,
+ map->prot & PROT_READ ? 'r' : '-',
+ map->prot & PROT_WRITE ? 'w' : '-',
+ map->prot & PROT_EXEC ? 'x' : '-',
+ map->flags & MAP_SHARED ? 's' : 'p',
+ map->pgoff,
+ map->ino, map->dso->name);
+ }
+
+ return printed;
+}
+
+static int map_groups__fprintf_task(struct map_groups *mg, int indent, FILE *fp)
+{
+ int printed = 0, i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ printed += maps__fprintf_task(&mg->maps[i], indent, fp);
+ return printed;
+}
+
static void task__print_level(struct task *task, FILE *fp, int level)
{
struct thread *thread = task->thread;
struct task *child;
+ int comm_indent = fprintf(fp, " %8d %8d %8d |%*s",
+ thread->pid_, thread->tid, thread->ppid,
+ level, "");
+
+ fprintf(fp, "%s\n", thread__comm_str(thread));
- fprintf(fp, " %8d %8d %8d |%*s%s\n",
- thread->pid_, thread->tid, thread->ppid,
- level, "", thread__comm_str(thread));
+ map_groups__fprintf_task(thread->mg, comm_indent, fp);
if (!list_empty(&task->children)) {
list_for_each_entry(child, &task->children, list)
@@ -930,6 +968,7 @@ int cmd_report(int argc, const char **argv)
"dump raw trace in ASCII"),
OPT_BOOLEAN(0, "stats", &report.stats_mode, "Display event stats"),
OPT_BOOLEAN(0, "tasks", &report.tasks_mode, "Display recorded tasks"),
+ OPT_BOOLEAN(0, "mmaps", &report.mmaps_mode, "Display recorded tasks memory maps"),
OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
"file", "vmlinux pathname"),
OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
@@ -1077,6 +1116,9 @@ int cmd_report(int argc, const char **argv)
report.symbol_filter_str = argv[0];
}
+ if (report.mmaps_mode)
+ report.tasks_mode = true;
+
if (quiet)
perf_quiet_option();
@@ -1194,7 +1236,7 @@ repeat:
if (report.stats_mode || report.tasks_mode)
use_browser = 0;
if (report.stats_mode && report.tasks_mode) {
- pr_err("Error: --tasks and --stats options cannot be used together\n");
+ pr_err("Error: --tasks and --mmaps can't be used together with --stats\n");
goto error;
}
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