diff options
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index d852cefa20de..45da8d186b49 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -12,6 +12,7 @@ #include "evlist.h" #include "evsel.h" #include "util.h" +#include "debug.h" #include <sys/mman.h> @@ -250,15 +251,19 @@ int perf_evlist__alloc_mmap(struct perf_evlist *evlist) return evlist->mmap != NULL ? 0 : -ENOMEM; } -static int __perf_evlist__mmap(struct perf_evlist *evlist, int cpu, int prot, - int mask, int fd) +static int __perf_evlist__mmap(struct perf_evlist *evlist, struct perf_evsel *evsel, + int cpu, int prot, int mask, int fd) { evlist->mmap[cpu].prev = 0; evlist->mmap[cpu].mask = mask; evlist->mmap[cpu].base = mmap(NULL, evlist->mmap_len, prot, MAP_SHARED, fd, 0); - if (evlist->mmap[cpu].base == MAP_FAILED) + if (evlist->mmap[cpu].base == MAP_FAILED) { + if (evlist->cpus->map[cpu] == -1 && evsel->attr.inherit) + ui__warning("Inherit is not allowed on per-task " + "events using mmap.\n"); return -1; + } perf_evlist__add_pollfd(evlist, fd); return 0; @@ -312,7 +317,8 @@ int perf_evlist__mmap(struct perf_evlist *evlist, int pages, bool overwrite) if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, FD(first_evsel, cpu, 0)) != 0) goto out_unmap; - } else if (__perf_evlist__mmap(evlist, cpu, prot, mask, fd) < 0) + } else if (__perf_evlist__mmap(evlist, evsel, cpu, + prot, mask, fd) < 0) goto out_unmap; if ((evsel->attr.read_format & PERF_FORMAT_ID) && |