From: Andi Kleen <redacted>
Add a PERF_CPUID variable to override the CPUID of the current CPU (within
the current architecture). This is useful for testing, so that all event
lists can be tested on a single system.
Signed-off-by: Andi Kleen <redacted>
Signed-off-by: Sukadev Bhattiprolu <redacted>
Acked-by: Jiri Olsa <redacted>
Acked-by: Ingo Molnar <mingo@kernel.org>
---
v2: Fix double free in earlier version.
Print actual CPUID being used with verbose option.
---
tools/perf/util/pmu.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index cb4c215..2291d2a 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -501,10 +501,16 @@ static int pmu_add_cpu_aliases(struct list_head *head)
struct pmu_event *pe;
char *cpuid;
- cpuid = get_cpuid_str();
+ cpuid = getenv("PERF_CPUID");
+ if (cpuid)
+ cpuid = strdup(cpuid);
+ if (!cpuid)
+ cpuid = get_cpuid_str();
if (!cpuid)
return 0;
+ pr_debug("Using CPUID %s\n", cpuid);
+
i = 0;
while (1) {
map = &pmu_events_map[i++];--
1.8.3.1