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libperf: Fix perf_cpu_map__for_each_cpu macro

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Tzvetomir Stoyanov reported an issue with using macro
perf_cpu_map__for_each_cpu using private perf_cpu object.

The issue is caused by recent change that wrapped cpu in struct perf_cpu
to distinguish it from cpu indexes. We need to make struct perf_cpu
public.

Add a simple test for using the perf_cpu_map__for_each_cpu macro.

Fixes: 6d18804b96 ("perf cpumap: Give CPUs their own type")
Reported-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20220215153713.31395-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2022-02-15 16:37:13 +01:00
committed by Arnaldo Carvalho de Melo
parent 9de0736973
commit 30d1c4d947
4 changed files with 18 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
tools/lib/perf/tests/test-cpumap.c
View File

@@ -14,6 +14,8 @@ static int libperf_print(enum libperf_print_level level,
int test_cpumap(int argc, char **argv)
{
struct perf_cpu_map *cpus;
struct perf_cpu cpu;
int idx;
__T_START;
@@ -27,6 +29,15 @@ int test_cpumap(int argc, char **argv)
perf_cpu_map__put(cpus);
perf_cpu_map__put(cpus);
cpus = perf_cpu_map__default_new();
if (!cpus)
return -1;
perf_cpu_map__for_each_cpu(cpu, idx, cpus)
__T("wrong cpu number", cpu.cpu != -1);
perf_cpu_map__put(cpus);
__T_END;
return tests_failed == 0 ? 0 : -1;
}