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| author |   Jason Gunthorpe <jgg@mellanox.com> | 2019-02-04 14:53:42 -0700 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-02-04 14:53:42 -0700 |
| commit | 6a8a2aa62da2fbe51f5449993fd366398048f465 (patch) | |
| tree | 566c6fcc782eefbca054af8553371d09b9d0734c /tools/perf/util/cpumap.c | |
| parent | IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len() (diff) | |
| parent | Linux 5.0-rc5 (diff) | |
| download | linux-dev-6a8a2aa62da2fbe51f5449993fd366398048f465.tar.xz linux-dev-6a8a2aa62da2fbe51f5449993fd366398048f465.zip | |
Merge tag 'v5.0-rc5' into rdma.git for-next
Linux 5.0-rc5
Needed to merge the include/uapi changes so we have an up to date
single-tree for these files. Patches already posted are also expected to
need this for dependencies.
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: |