d6d901c23a
Parameter --pid (or -p) of perf currently means a thread-wide collection. For exmaple, if a process whose id is 8888 has 10 threads, 'perf top -p 8888' just collects the main thread statistics. That's misleading. Users are used to attach a whole process when debugging a process by gdb. To follow normal usage style, the patch change --pid to process-wide collection and add --tid (-t) to mean a thread-wide collection. Usage example is: # perf top -p 8888 # perf record -p 8888 -f sleep 10 # perf stat -p 8888 -f sleep 10 Above commands collect the statistics of all threads of process 8888. Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Avi Kivity <avi@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Sheng Yang <sheng@linux.intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Jes Sorensen <Jes.Sorensen@redhat.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Cc: zhiteng.huang@intel.com Cc: Zachary Amsden <zamsden@redhat.com> LKML-Reference: <1268922965-14774-3-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
#ifndef __PERF_THREAD_H
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#define __PERF_THREAD_H
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#include <linux/rbtree.h>
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#include <unistd.h>
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#include "symbol.h"
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struct map_groups {
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struct rb_root maps[MAP__NR_TYPES];
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struct list_head removed_maps[MAP__NR_TYPES];
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};
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size_t __map_groups__fprintf_maps(struct map_groups *self,
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enum map_type type, FILE *fp);
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struct thread {
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struct rb_node rb_node;
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struct map_groups mg;
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pid_t pid;
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char shortname[3];
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bool comm_set;
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char *comm;
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int comm_len;
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};
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int find_all_tid(int pid, pid_t ** all_tid);
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void map_groups__init(struct map_groups *self);
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int thread__set_comm(struct thread *self, const char *comm);
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int thread__comm_len(struct thread *self);
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struct thread *perf_session__findnew(struct perf_session *self, pid_t pid);
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void thread__insert_map(struct thread *self, struct map *map);
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int thread__fork(struct thread *self, struct thread *parent);
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size_t map_groups__fprintf_maps(struct map_groups *self, FILE *fp);
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size_t perf_session__fprintf(struct perf_session *self, FILE *fp);
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void maps__insert(struct rb_root *maps, struct map *map);
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struct map *maps__find(struct rb_root *maps, u64 addr);
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static inline void map_groups__insert(struct map_groups *self, struct map *map)
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{
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maps__insert(&self->maps[map->type], map);
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}
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static inline struct map *map_groups__find(struct map_groups *self,
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enum map_type type, u64 addr)
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{
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return maps__find(&self->maps[type], addr);
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}
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static inline struct map *thread__find_map(struct thread *self,
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enum map_type type, u64 addr)
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{
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return self ? map_groups__find(&self->mg, type, addr) : NULL;
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}
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void thread__find_addr_map(struct thread *self,
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struct perf_session *session, u8 cpumode,
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enum map_type type, u64 addr,
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struct addr_location *al);
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void thread__find_addr_location(struct thread *self,
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struct perf_session *session, u8 cpumode,
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enum map_type type, u64 addr,
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struct addr_location *al,
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symbol_filter_t filter);
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struct symbol *map_groups__find_symbol(struct map_groups *self,
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enum map_type type, u64 addr,
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symbol_filter_t filter);
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static inline struct symbol *map_groups__find_function(struct map_groups *self,
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u64 addr,
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symbol_filter_t filter)
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{
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return map_groups__find_symbol(self, MAP__FUNCTION, addr, filter);
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}
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struct map *map_groups__find_by_name(struct map_groups *self,
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enum map_type type, const char *name);
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int __map_groups__create_kernel_maps(struct map_groups *self,
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struct map *vmlinux_maps[MAP__NR_TYPES],
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struct dso *kernel);
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int map_groups__create_kernel_maps(struct map_groups *self,
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struct map *vmlinux_maps[MAP__NR_TYPES]);
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struct map *map_groups__new_module(struct map_groups *self, u64 start,
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const char *filename);
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#endif /* __PERF_THREAD_H */
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