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It is useful to let the user know about the hybrid topology. Add the HYBRID_TOPOLOGY feature in header to indicate the core CPUs and the atom CPUs. With this patch a perf.data generated on a hybrid platform reports the hybrid CPU list: root@otcpl-adl-s-2:~# perf report --header-only -I ... # hybrid cpu system: # cpu_core cpu list : 0-15 # cpu_atom cpu list : 16-23 For a perf.data generated on a non-hybrid platform, reports a message that HYBRID_TOPOLOGY is missing: root@kbl-ppc:~# perf report --header-only -I ... # missing features: TRACING_DATA BRANCH_STACK GROUP_DESC AUXTRACE STAT CLOCKID DIR_FORMAT COMPRESSED CLOCK_DATA HYBRID_TOPOLOGY Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210514122948.9472-2-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
34 lines
754 B
C
34 lines
754 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PMU_HYBRID_H
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#define __PMU_HYBRID_H
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#include <linux/perf_event.h>
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#include <linux/compiler.h>
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#include <linux/list.h>
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#include <stdbool.h>
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#include "pmu.h"
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extern struct list_head perf_pmu__hybrid_pmus;
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#define perf_pmu__for_each_hybrid_pmu(pmu) \
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list_for_each_entry(pmu, &perf_pmu__hybrid_pmus, hybrid_list)
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bool perf_pmu__hybrid_mounted(const char *name);
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struct perf_pmu *perf_pmu__find_hybrid_pmu(const char *name);
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bool perf_pmu__is_hybrid(const char *name);
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char *perf_pmu__hybrid_type_to_pmu(const char *type);
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static inline int perf_pmu__hybrid_pmu_num(void)
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{
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struct perf_pmu *pmu;
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int num = 0;
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perf_pmu__for_each_hybrid_pmu(pmu)
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num++;
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return num;
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}
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#endif /* __PMU_HYBRID_H */
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