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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-05-24 10:54:32 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-05-26 18:36:57 +0300 |
| commit | 4ce47d842d4c16c07b135b8a7975b8f0672bcc0e (patch) | |
| tree | 240a6873aac0d2b3c9fd892806e338c16952fe68 /tools/lib | |
| parent | ae4f8ae16a07896403c90305d4b9be27f657c1fc (diff) | |
| download | linux-4ce47d842d4c16c07b135b8a7975b8f0672bcc0e.tar.xz | |
libperf evlist: Check nr_mmaps is correct
Print an error message if the predetermined number of mmaps is
incorrect.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Link: https://lore.kernel.org/r/20220524075436.29144-12-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/perf/evlist.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c index eae1f6179dad..f51fdb899d19 100644 --- a/tools/lib/perf/evlist.c +++ b/tools/lib/perf/evlist.c @@ -23,6 +23,7 @@ #include <perf/cpumap.h> #include <perf/threadmap.h> #include <api/fd/array.h> +#include "internal.h" void perf_evlist__init(struct perf_evlist *evlist) { @@ -428,7 +429,7 @@ static void perf_evlist__set_mmap_first(struct perf_evlist *evlist, struct perf_ static int mmap_per_evsel(struct perf_evlist *evlist, struct perf_evlist_mmap_ops *ops, int idx, struct perf_mmap_param *mp, int cpu_idx, - int thread, int *_output, int *_output_overwrite) + int thread, int *_output, int *_output_overwrite, int *nr_mmaps) { struct perf_cpu evlist_cpu = perf_cpu_map__cpu(evlist->all_cpus, cpu_idx); struct perf_evsel *evsel; @@ -484,6 +485,8 @@ mmap_per_evsel(struct perf_evlist *evlist, struct perf_evlist_mmap_ops *ops, if (ops->mmap(map, mp, *output, evlist_cpu) < 0) return -1; + *nr_mmaps += 1; + if (!idx) perf_evlist__set_mmap_first(evlist, map, overwrite); } else { @@ -518,6 +521,7 @@ mmap_per_cpu(struct perf_evlist *evlist, struct perf_evlist_mmap_ops *ops, { int nr_threads = perf_thread_map__nr(evlist->threads); int nr_cpus = perf_cpu_map__nr(evlist->all_cpus); + int nr_mmaps = 0; int cpu, thread; for (cpu = 0; cpu < nr_cpus; cpu++) { @@ -526,11 +530,14 @@ mmap_per_cpu(struct perf_evlist *evlist, struct perf_evlist_mmap_ops *ops, for (thread = 0; thread < nr_threads; thread++) { if (mmap_per_evsel(evlist, ops, cpu, mp, cpu, - thread, &output, &output_overwrite)) + thread, &output, &output_overwrite, &nr_mmaps)) goto out_unmap; } } + if (nr_mmaps != evlist->nr_mmaps) + pr_err("Miscounted nr_mmaps %d vs %d\n", nr_mmaps, evlist->nr_mmaps); + return 0; out_unmap: |