From: Namhyung Kim Date: Mon, 7 May 2012 05:08:59 +0000 (+0900) Subject: perf evlist: Fix creation of cpu map X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=55261f46702cec96911a81aacfb3cba13434d304;p=openwrt%2Fstaging%2Fblogic.git perf evlist: Fix creation of cpu map Currently, 'perf record -- sleep 1' creates a cpu map for all online cpus since it turns out calling cpu_map__new(NULL). Fix it. Also it is guaranteed that cpu_list is NULL if PID/TID is given by calling perf_target__validate(), so we can make the conditional bit simpler. This also fixes perf test 7 (Validate) failure on my 6 core machine: $ cat /sys/devices/system/cpu/online 0-11 $ ./perf test -v 7 7: Validate PERF_RECORD_* events & perf_sample fields: --- start --- perf_evlist__mmap: Operation not permitted ---- end ---- Validate PERF_RECORD_* events & perf_sample fields: FAILED! Signed-off-by: Namhyung Kim Reviewed-by: David Ahern Cc: David Ahern Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1336367344-28071-3-git-send-email-namhyung.kim@lge.com Signed-off-by: Arnaldo Carvalho de Melo --- diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index 30328623cae6..183b199b0d09 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -609,8 +609,9 @@ int perf_evlist__create_maps(struct perf_evlist *evlist, if (evlist->threads == NULL) return -1; - if (target->uid != UINT_MAX || - (target->cpu_list == NULL && target->tid)) + if (target->uid != UINT_MAX || target->tid) + evlist->cpus = cpu_map__dummy_new(); + else if (!target->system_wide && target->cpu_list == NULL) evlist->cpus = cpu_map__dummy_new(); else evlist->cpus = cpu_map__new(target->cpu_list);