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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-11 09:05:58 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-11 09:05:58 +0100 |
| commit | 5c07488d996b6b2af609f351bf54c9909ed0fdf8 (patch) | |
| tree | 62cc2522698d7383cdf4a4f450bde30bc45f1832 /tools/perf/util/cpumap.c | |
| parent | coresight: Use event attributes for sink selection (diff) | |
| parent | Linux 5.0-rc6 (diff) | |
| download | linux-5c07488d996b6b2af609f351bf54c9909ed0fdf8.tar.xz linux-5c07488d996b6b2af609f351bf54c9909ed0fdf8.zip | |
Merge 5.0-rc6 into char-misc-next
We need the char-misc fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/util/cpumap.c')
| -rw-r--r-- | tools/perf/util/cpumap.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c index 1ccbd3342069..383674f448fc 100644 --- a/tools/perf/util/cpumap.c +++ b/tools/perf/util/cpumap.c @@ -134,7 +134,12 @@ struct cpu_map *cpu_map__new(const char *cpu_list) if (!cpu_list) return cpu_map__read_all_cpu_map(); - if (!isdigit(*cpu_list)) + /* + * must handle the case of empty cpumap to cover + * TOPOLOGY header for NUMA nodes with no CPU + * ( e.g., because of CPU hotplug) + */ + if (!isdigit(*cpu_list) && *cpu_list != '\0') goto out; while (isdigit(*cpu_list)) { @@ -181,8 +186,10 @@ struct cpu_map *cpu_map__new(const char *cpu_list) if (nr_cpus > 0) cpus = cpu_map__trim_new(nr_cpus, tmp_cpus); - else + else if (*cpu_list != '\0') cpus = cpu_map__default_new(); + else + cpus = cpu_map__dummy_new(); invalid: free(tmp_cpus); out: |