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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/tools/perf/util/evlist-hybrid.h

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perf record: Create two hybrid 'cycles' events by default When evlist is empty, for example no '-e' specified in perf record, one default 'cycles' event is added to evlist. While on hybrid platform, it needs to create two default 'cycles' events. One is for cpu_core, the other is for cpu_atom. This patch actually calls evsel__new_cycles() two times to create two 'cycles' events. # ./perf record -vv -a -- sleep 1 ... ------------------------------------------------------------ perf_event_attr: size 120 config 0x400000000 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|ID|CPU|PERIOD read_format ID disabled 1 inherit 1 freq 1 precise_ip 3 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5 sys_perf_event_open: pid -1 cpu 1 group_fd -1 flags 0x8 = 6 sys_perf_event_open: pid -1 cpu 2 group_fd -1 flags 0x8 = 7 sys_perf_event_open: pid -1 cpu 3 group_fd -1 flags 0x8 = 9 sys_perf_event_open: pid -1 cpu 4 group_fd -1 flags 0x8 = 10 sys_perf_event_open: pid -1 cpu 5 group_fd -1 flags 0x8 = 11 sys_perf_event_open: pid -1 cpu 6 group_fd -1 flags 0x8 = 12 sys_perf_event_open: pid -1 cpu 7 group_fd -1 flags 0x8 = 13 sys_perf_event_open: pid -1 cpu 8 group_fd -1 flags 0x8 = 14 sys_perf_event_open: pid -1 cpu 9 group_fd -1 flags 0x8 = 15 sys_perf_event_open: pid -1 cpu 10 group_fd -1 flags 0x8 = 16 sys_perf_event_open: pid -1 cpu 11 group_fd -1 flags 0x8 = 17 sys_perf_event_open: pid -1 cpu 12 group_fd -1 flags 0x8 = 18 sys_perf_event_open: pid -1 cpu 13 group_fd -1 flags 0x8 = 19 sys_perf_event_open: pid -1 cpu 14 group_fd -1 flags 0x8 = 20 sys_perf_event_open: pid -1 cpu 15 group_fd -1 flags 0x8 = 21 ------------------------------------------------------------ perf_event_attr: size 120 config 0x800000000 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|ID|CPU|PERIOD read_format ID disabled 1 inherit 1 freq 1 precise_ip 3 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 16 group_fd -1 flags 0x8 = 22 sys_perf_event_open: pid -1 cpu 17 group_fd -1 flags 0x8 = 23 sys_perf_event_open: pid -1 cpu 18 group_fd -1 flags 0x8 = 24 sys_perf_event_open: pid -1 cpu 19 group_fd -1 flags 0x8 = 25 sys_perf_event_open: pid -1 cpu 20 group_fd -1 flags 0x8 = 26 sys_perf_event_open: pid -1 cpu 21 group_fd -1 flags 0x8 = 27 sys_perf_event_open: pid -1 cpu 22 group_fd -1 flags 0x8 = 28 sys_perf_event_open: pid -1 cpu 23 group_fd -1 flags 0x8 = 29 ------------------------------------------------------------ We have to create evlist-hybrid.c otherwise due to the symbol dependency the perf test python would be failed. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210427070139.25256-14-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-27 10:01:26 +03:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_EVLIST_HYBRID_H
#define __PERF_EVLIST_HYBRID_H
#include <linux/compiler.h>
#include <linux/kernel.h>
#include "evlist.h"
#include <unistd.h>
int evlist__add_default_hybrid(struct evlist *evlist, bool precise);
perf stat: Warn group events from different hybrid PMU If a group has events which are from different hybrid PMUs, shows a warning: "WARNING: events in group from different hybrid PMUs!" This is to remind the user not to put the core event and atom event into one group. Next, just disable grouping. # perf stat -e "{cpu_core/cycles/,cpu_atom/cycles/}" -a -- sleep 1 WARNING: events in group from different hybrid PMUs! WARNING: grouped events cpus do not match, disabling group: anon group { cpu_core/cycles/, cpu_atom/cycles/ } Performance counter stats for 'system wide': 5,438,125 cpu_core/cycles/ 3,914,586 cpu_atom/cycles/ 1.004250966 seconds time elapsed Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210427070139.25256-17-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-27 10:01:29 +03:00
void evlist__warn_hybrid_group(struct evlist *evlist);
bool evlist__has_hybrid(struct evlist *evlist);
perf tools: Enable on a list of CPUs for hybrid The 'perf record' and 'perf stat' commands have supported the option '-C/--cpus' to count or collect only on the list of CPUs provided. This option needs to be supported for hybrid as well. For hybrid support, it needs to check that the cpu list are available on hybrid PMU. One example for AlderLake, cpu0-7 is 'cpu_core', cpu8-11 is 'cpu_atom'. Before: # perf stat -e cpu_core/cycles/ -C11 -- sleep 1 Performance counter stats for 'CPU(s) 11': <not supported> cpu_core/cycles/ 1.006179431 seconds time elapsed The 'perf stat' command silently returned "<not supported>" without any helpful information. It should error out pointing out that that cpu11 was not 'cpu_core'. After: # perf stat -e cpu_core/cycles/ -C11 -- sleep 1 WARNING: 11 isn't a 'cpu_core', please use a CPU list in the 'cpu_core' range (0-7) failed to use cpu list 11 We also need to support the events without pmu prefix specified. # perf stat -e cycles -C11 -- sleep 1 WARNING: 11 isn't a 'cpu_core', please use a CPU list in the 'cpu_core' range (0-7) Performance counter stats for 'CPU(s) 11': 1,067,373 cpu_atom/cycles/ 1.005544738 seconds time elapsed The perf tool creates two cycles events automatically, cpu_core/cycles/ and cpu_atom/cycles/. It checks that cpu11 is not 'cpu_core', then shows a warning for cpu_core/cycles/ and only count the cpu_atom/cycles/. If part of cpus are 'cpu_core' and part of cpus are 'cpu_atom', for example, # perf stat -e cycles -C0,11 -- sleep 1 WARNING: use 0 in 'cpu_core' for 'cycles', skip other cpus in list. WARNING: use 11 in 'cpu_atom' for 'cycles', skip other cpus in list. Performance counter stats for 'CPU(s) 0,11': 1,914,704 cpu_core/cycles/ 2,036,983 cpu_atom/cycles/ 1.005815641 seconds time elapsed It now automatically selects cpu0 for cpu_core/cycles/, selects cpu11 for cpu_atom/cycles/, and output with some warnings. Some more complex examples, # perf stat -e cycles,instructions -C0,11 -- sleep 1 WARNING: use 0 in 'cpu_core' for 'cycles', skip other cpus in list. WARNING: use 11 in 'cpu_atom' for 'cycles', skip other cpus in list. WARNING: use 0 in 'cpu_core' for 'instructions', skip other cpus in list. WARNING: use 11 in 'cpu_atom' for 'instructions', skip other cpus in list. Performance counter stats for 'CPU(s) 0,11': 2,780,387 cpu_core/cycles/ 1,583,432 cpu_atom/cycles/ 3,957,277 cpu_core/instructions/ 1,167,089 cpu_atom/instructions/ 1.006005124 seconds time elapsed # perf stat -e cycles,cpu_atom/instructions/ -C0,11 -- sleep 1 WARNING: use 0 in 'cpu_core' for 'cycles', skip other cpus in list. WARNING: use 11 in 'cpu_atom' for 'cycles', skip other cpus in list. WARNING: use 11 in 'cpu_atom' for 'cpu_atom/instructions/', skip other cpus in list. Performance counter stats for 'CPU(s) 0,11': 3,290,301 cpu_core/cycles/ 1,953,073 cpu_atom/cycles/ 1,407,869 cpu_atom/instructions/ 1.006260912 seconds time elapsed 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: Ingo Molnar <mingo@redhat.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https //lore.kernel.org/r/20210723063433.7318-4-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-07-23 09:34:33 +03:00
int evlist__fix_hybrid_cpus(struct evlist *evlist, const char *cpu_list);
perf record: Create two hybrid 'cycles' events by default When evlist is empty, for example no '-e' specified in perf record, one default 'cycles' event is added to evlist. While on hybrid platform, it needs to create two default 'cycles' events. One is for cpu_core, the other is for cpu_atom. This patch actually calls evsel__new_cycles() two times to create two 'cycles' events. # ./perf record -vv -a -- sleep 1 ... ------------------------------------------------------------ perf_event_attr: size 120 config 0x400000000 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|ID|CPU|PERIOD read_format ID disabled 1 inherit 1 freq 1 precise_ip 3 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5 sys_perf_event_open: pid -1 cpu 1 group_fd -1 flags 0x8 = 6 sys_perf_event_open: pid -1 cpu 2 group_fd -1 flags 0x8 = 7 sys_perf_event_open: pid -1 cpu 3 group_fd -1 flags 0x8 = 9 sys_perf_event_open: pid -1 cpu 4 group_fd -1 flags 0x8 = 10 sys_perf_event_open: pid -1 cpu 5 group_fd -1 flags 0x8 = 11 sys_perf_event_open: pid -1 cpu 6 group_fd -1 flags 0x8 = 12 sys_perf_event_open: pid -1 cpu 7 group_fd -1 flags 0x8 = 13 sys_perf_event_open: pid -1 cpu 8 group_fd -1 flags 0x8 = 14 sys_perf_event_open: pid -1 cpu 9 group_fd -1 flags 0x8 = 15 sys_perf_event_open: pid -1 cpu 10 group_fd -1 flags 0x8 = 16 sys_perf_event_open: pid -1 cpu 11 group_fd -1 flags 0x8 = 17 sys_perf_event_open: pid -1 cpu 12 group_fd -1 flags 0x8 = 18 sys_perf_event_open: pid -1 cpu 13 group_fd -1 flags 0x8 = 19 sys_perf_event_open: pid -1 cpu 14 group_fd -1 flags 0x8 = 20 sys_perf_event_open: pid -1 cpu 15 group_fd -1 flags 0x8 = 21 ------------------------------------------------------------ perf_event_attr: size 120 config 0x800000000 { sample_period, sample_freq } 4000 sample_type IP|TID|TIME|ID|CPU|PERIOD read_format ID disabled 1 inherit 1 freq 1 precise_ip 3 sample_id_all 1 exclude_guest 1 ------------------------------------------------------------ sys_perf_event_open: pid -1 cpu 16 group_fd -1 flags 0x8 = 22 sys_perf_event_open: pid -1 cpu 17 group_fd -1 flags 0x8 = 23 sys_perf_event_open: pid -1 cpu 18 group_fd -1 flags 0x8 = 24 sys_perf_event_open: pid -1 cpu 19 group_fd -1 flags 0x8 = 25 sys_perf_event_open: pid -1 cpu 20 group_fd -1 flags 0x8 = 26 sys_perf_event_open: pid -1 cpu 21 group_fd -1 flags 0x8 = 27 sys_perf_event_open: pid -1 cpu 22 group_fd -1 flags 0x8 = 28 sys_perf_event_open: pid -1 cpu 23 group_fd -1 flags 0x8 = 29 ------------------------------------------------------------ We have to create evlist-hybrid.c otherwise due to the symbol dependency the perf test python would be failed. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210427070139.25256-14-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-04-27 10:01:26 +03:00
#endif /* __PERF_EVLIST_HYBRID_H */