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58b8b5d142
Thomas Richter <tmricht@linux.ibm.com> reported a double put on the cpumap for the placeholder core PMU: https://lore.kernel.org/lkml/20250318095132.1502654-3-tmricht@linux.ibm.com/ Requiring the caller to get the cpumap is not how these things are usually done, switch cpu_map__online to do the get and then fix up any use cases where a put is needed. Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Richter <tmricht@linux.ibm.com> Link: https://lore.kernel.org/r/20250318171914.145616-1-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright(C) 2015 Linaro Limited. All rights reserved.
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* Author: Mathieu Poirier <mathieu.poirier@linaro.org>
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*/
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#include <string.h>
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#include <linux/coresight-pmu.h>
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#include <linux/perf_event.h>
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#include <linux/string.h>
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#include "arm-spe.h"
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#include "hisi-ptt.h"
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#include "../../../util/cpumap.h"
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#include "../../../util/pmu.h"
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#include "../../../util/cs-etm.h"
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#include "../../arm64/util/mem-events.h"
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void perf_pmu__arch_init(struct perf_pmu *pmu)
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{
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struct perf_cpu_map *intersect, *online = cpu_map__online();
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#ifdef HAVE_AUXTRACE_SUPPORT
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if (!strcmp(pmu->name, CORESIGHT_ETM_PMU_NAME)) {
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/* add ETM default config here */
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pmu->auxtrace = true;
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pmu->selectable = true;
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pmu->perf_event_attr_init_default = cs_etm_get_default_config;
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#if defined(__aarch64__)
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} else if (strstarts(pmu->name, ARM_SPE_PMU_NAME)) {
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pmu->auxtrace = true;
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pmu->selectable = true;
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pmu->is_uncore = false;
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pmu->perf_event_attr_init_default = arm_spe_pmu_default_config;
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if (strstarts(pmu->name, "arm_spe_"))
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pmu->mem_events = perf_mem_events_arm;
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} else if (strstarts(pmu->name, HISI_PTT_PMU_NAME)) {
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pmu->auxtrace = true;
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pmu->selectable = true;
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#endif
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}
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#endif
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/* Workaround some ARM PMU's failing to correctly set CPU maps for online processors. */
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intersect = perf_cpu_map__intersect(online, pmu->cpus);
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perf_cpu_map__put(online);
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perf_cpu_map__put(pmu->cpus);
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pmu->cpus = intersect;
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}
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