Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-12-29 17:25:38 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

perf ftrace profile: Add -s/--sort option

Browse Source 
The -s/--sort option is to sort the output by given column.

  $ sudo perf ftrace profile -s max sync | head
  # Total (us)   Avg (us)   Max (us)      Count   Function
      6301.811   6301.811   6301.811          1   __do_sys_sync
      6301.328   6301.328   6301.328          1   ksys_sync
      5320.300   1773.433   2858.819          3   iterate_supers
      2755.875     17.012   2610.633        162   sync_fs_one_sb
      2728.351    682.088   2610.413          4   ext4_sync_fs [ext4]
      2603.654   2603.654   2603.654          1   jbd2_log_wait_commit [jbd2]
      4750.615    593.827   2597.427          8   schedule
      2164.986     26.728   2115.673         81   sync_inodes_one_sb
      2143.842     26.467   2115.438         81   sync_inodes_sb

Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Changbin Du <changbin.du@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/lkml/20240729004127.238611-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2024-07-28 17:41:27 -07:00 committed by Arnaldo Carvalho de Melo
parent 0f223813ed
commit 74ae366c37
2 changed files with 66 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
tools/perf/Documentation/perf-ftrace.txt
View File

@ -185,6 +185,11 @@ OPTIONS for 'perf ftrace profile'
Set the size of per-cpu tracing buffer, <size> is expected to
be a number with appended unit character - B/K/M/G.
-s::
--sort=::
Sort the result by the given field. Available values are:
total, avg, max, count, name. Default is 'total'.
SEE ALSO
--------

63
tools/perf/builtin-ftrace.c
View File

@ -1090,15 +1090,47 @@ static int parse_func_duration(struct perf_ftrace *ftrace, char *line, size_t le
return add_func_duration(ftrace, func, duration);
}
enum perf_ftrace_profile_sort_key {
PFP_SORT_TOTAL = 0,
PFP_SORT_AVG,
PFP_SORT_MAX,
PFP_SORT_COUNT,
PFP_SORT_NAME,
};
static enum perf_ftrace_profile_sort_key profile_sort = PFP_SORT_TOTAL;
static int cmp_profile_data(const void *a, const void *b)
{
const struct hashmap_entry *e1 = *(const struct hashmap_entry **)a;
const struct hashmap_entry *e2 = *(const struct hashmap_entry **)b;
struct ftrace_profile_data *p1 = e1->pvalue;
struct ftrace_profile_data *p2 = e2->pvalue;
double v1, v2;
/* compare by total time */
if ((p1->st.n * p1->st.mean) > (p2->st.n * p2->st.mean))
switch (profile_sort) {
case PFP_SORT_NAME:
return strcmp(e1->pkey, e2->pkey);
case PFP_SORT_AVG:
v1 = p1->st.mean;
v2 = p2->st.mean;
break;
case PFP_SORT_MAX:
v1 = p1->st.max;
v2 = p2->st.max;
break;
case PFP_SORT_COUNT:
v1 = p1->st.n;
v2 = p2->st.n;
break;
case PFP_SORT_TOTAL:
default:
v1 = p1->st.n * p1->st.mean;
v2 = p2->st.n * p2->st.mean;
break;
}
if (v1 > v2)
return -1;
else
return 1;
@ -1414,6 +1446,30 @@ static int parse_graph_tracer_opts(const struct option *opt,
return 0;
}
static int parse_sort_key(const struct option *opt, const char *str, int unset)
{
enum perf_ftrace_profile_sort_key *key = (void *)opt->value;
if (unset)
return 0;
if (!strcmp(str, "total"))
*key = PFP_SORT_TOTAL;
else if (!strcmp(str, "avg"))
*key = PFP_SORT_AVG;
else if (!strcmp(str, "max"))
*key = PFP_SORT_MAX;
else if (!strcmp(str, "count"))
*key = PFP_SORT_COUNT;
else if (!strcmp(str, "name"))
*key = PFP_SORT_NAME;
else {
pr_err("Unknown sort key: %s\n", str);
return -1;
}
return 0;
}
enum perf_ftrace_subcommand {
PERF_FTRACE_NONE,
PERF_FTRACE_TRACE,
@ -1497,6 +1553,9 @@ int cmd_ftrace(int argc, const char **argv)
"Set nograph filter on given functions", parse_filter_func),
OPT_CALLBACK('m', "buffer-size", &ftrace.percpu_buffer_size, "size",
"Size of per cpu buffer, needs to use a B, K, M or G suffix.", parse_buffer_size),
OPT_CALLBACK('s', "sort", &profile_sort, "key",
"Sort result by key: total (default), avg, max, count, name.",
parse_sort_key),
OPT_PARENT(common_options),
};
const struct option *options = ftrace_options;