xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf tools: Change cpu_map__fprintf output

Browse Source 
Display cpu map in standard list form.  (perf report -D output on perf stat data).

before:
  0x590 [0x18]: PERF_RECORD_CPU_MAP nr: 4 cpus: 0, 1, 2, 3

after:
  0x590 [0x18]: PERF_RECORD_CPU_MAP: 0-3

Adding automated testcase.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1467113345-12669-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2016-06-28 13:29:04 +02:00
committed by Arnaldo Carvalho de Melo
parent 7fa9b8fba0
commit a24020e6b7
6 changed files with 79 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
tools/perf/util/cpumap.c
View File

@@ -236,13 +236,12 @@ struct cpu_map *cpu_map__new_data(struct cpu_map_data *data)
size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp)
{
int i;
size_t printed = fprintf(fp, "%d cpu%s: ",
map->nr, map->nr > 1 ? "s" : "");
for (i = 0; i < map->nr; ++i)
printed += fprintf(fp, "%s%d", i ? ", " : "", map->map[i]);
#define BUFSIZE 1024
char buf[BUFSIZE];
return printed + fprintf(fp, "\n");
cpu_map__snprint(map, buf, sizeof(buf));
return fprintf(fp, "%s\n", buf);
#undef BUFSIZE
}
struct cpu_map *cpu_map__dummy_new(void)
@@ -599,3 +598,46 @@ bool cpu_map__has(struct cpu_map *cpus, int cpu)
return false;
}
size_t cpu_map__snprint(struct cpu_map *map, char *buf, size_t size)
{
int i, cpu, start = -1;
bool first = true;
size_t ret = 0;
#define COMMA first ? "" : ","
for (i = 0; i < map->nr + 1; i++) {
bool last = i == map->nr;
cpu = last ? INT_MAX : map->map[i];
if (start == -1) {
start = i;
if (last) {
ret += snprintf(buf + ret, size - ret,
"%s%d", COMMA,
map->map[i]);
}
} else if (((i - start) != (cpu - map->map[start])) || last) {
int end = i - 1;
if (start == end) {
ret += snprintf(buf + ret, size - ret,
"%s%d", COMMA,
map->map[start]);
} else {
ret += snprintf(buf + ret, size - ret,
"%s%d-%d", COMMA,
map->map[start], map->map[end]);
}
first = false;
start = i;
}
}
#undef COMMA
pr_debug("cpumask list: %s\n", buf);
return ret;
}