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72c6f57a41
perf_pmus__destroy() treats all PMUs as allocated and free's them so we
can't have any static PMUs that are added to the PMU lists. Fix it by
allocating the tool PMU in the same way as the others. Current users of
the tool PMU already use find_pmu() and not perf_pmus__tool_pmu(), so
rename the function to add 'new' to avoid it being misused in the
future.
perf_pmus__fake_pmu() can remain as static as it's not added to the
PMU lists.
Fixes the following error:
$ perf bench internals pmu-scan
# Running 'internals/pmu-scan' benchmark:
Computing performance of sysfs PMU event scan for 100 times
munmap_chunk(): invalid pointer
Aborted (core dumped)
Fixes: 240505b2d0 ("perf tool_pmu: Factor tool events into their own PMU")
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20250226104111.564443-2-james.clark@linaro.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __TOOL_PMU_H
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#define __TOOL_PMU_H
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#include "pmu.h"
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struct evsel;
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struct perf_thread_map;
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struct print_callbacks;
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enum tool_pmu_event {
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TOOL_PMU__EVENT_NONE = 0,
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TOOL_PMU__EVENT_DURATION_TIME,
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TOOL_PMU__EVENT_USER_TIME,
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TOOL_PMU__EVENT_SYSTEM_TIME,
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TOOL_PMU__EVENT_HAS_PMEM,
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TOOL_PMU__EVENT_NUM_CORES,
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TOOL_PMU__EVENT_NUM_CPUS,
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TOOL_PMU__EVENT_NUM_CPUS_ONLINE,
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TOOL_PMU__EVENT_NUM_DIES,
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TOOL_PMU__EVENT_NUM_PACKAGES,
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TOOL_PMU__EVENT_SLOTS,
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TOOL_PMU__EVENT_SMT_ON,
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TOOL_PMU__EVENT_SYSTEM_TSC_FREQ,
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TOOL_PMU__EVENT_MAX,
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};
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#define tool_pmu__for_each_event(ev) \
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for ((ev) = TOOL_PMU__EVENT_DURATION_TIME; (ev) < TOOL_PMU__EVENT_MAX; ev++)
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const char *tool_pmu__event_to_str(enum tool_pmu_event ev);
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enum tool_pmu_event tool_pmu__str_to_event(const char *str);
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bool tool_pmu__skip_event(const char *name);
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int tool_pmu__num_skip_events(void);
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bool tool_pmu__read_event(enum tool_pmu_event ev, u64 *result);
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u64 tool_pmu__cpu_slots_per_cycle(void);
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bool perf_pmu__is_tool(const struct perf_pmu *pmu);
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bool evsel__is_tool(const struct evsel *evsel);
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enum tool_pmu_event evsel__tool_event(const struct evsel *evsel);
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const char *evsel__tool_pmu_event_name(const struct evsel *evsel);
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int evsel__tool_pmu_prepare_open(struct evsel *evsel,
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struct perf_cpu_map *cpus,
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int nthreads);
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int evsel__tool_pmu_open(struct evsel *evsel,
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struct perf_thread_map *threads,
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int start_cpu_map_idx, int end_cpu_map_idx);
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int evsel__tool_pmu_read(struct evsel *evsel, int cpu_map_idx, int thread);
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struct perf_pmu *tool_pmu__new(void);
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#endif /* __TOOL_PMU_H */
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