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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-09 15:25:03 -0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-10 12:46:49 -0300 |
commit | 6439d7d16c94324300eb392ed85e3632e489e197 (patch) | |
tree | d46e7ccaa143a61f755ab1f98119ae02483b61b1 /tools/perf | |
parent | 930f8b3479444d264aa33e008c4b00b86e8c62cc (diff) | |
download | linux-6439d7d16c94324300eb392ed85e3632e489e197.tar.bz2 |
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@jouet ~]# 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@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-zulwdlg5rfowogr1qznorvvc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/Documentation/perf-report.txt | 9 | ||||
-rw-r--r-- | 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 856c3c7e94fa..63d0db3184c9 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 2c7bd85651dc..dd4df9a5cd06 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; } |