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perf test: Expand user space event reading (rdpmc) tests

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Test that disabling rdpmc support via /sys/bus/event_source/cpu*/rdpmc
disables reading in the mmap (libperf read support will fallback to
using a system call).
Test all hybrid PMUs support rdpmc.
Ensure hybrid PMUs use the correct CPU to rdpmc the correct
event. Previously the test would open cycles or instructions with no
extended type then rdpmc it on whatever CPU. This could fail/skip due
to which CPU the test was scheduled upon.

Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20250614004528.1652860-1-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Ian Rogers
2025-06-13 17:45:28 -07:00
committed by Namhyung Kim
parent ce3d5af2a9
commit 588d22b404
4 changed files with 249 additions and 87 deletions
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2
tools/perf/util/affinity.h
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@@ -4,6 +4,7 @@
#include <stdbool.h>
struct perf_cpu_map;
struct affinity {
unsigned long *orig_cpus;
unsigned long *sched_cpus;
@@ -13,5 +14,6 @@ struct affinity {
void affinity__cleanup(struct affinity *a);
void affinity__set(struct affinity *a, int cpu);
int affinity__setup(struct affinity *a);
void cpu_map__set_affinity(const struct perf_cpu_map *cpumap);
#endif // PERF_AFFINITY_H