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https://github.com/edk2-porting/linux-next.git
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591765fdaf
For long running sessions with many threads with short lifetimes the amount of memory that the buildid process takes is too much. Since we don't have hist_entries that may be pointing to them, we can just release the resources associated with each thread when the exit (PERF_RECORD_EXIT) event is received. For normal processing we need to annotate maps with hits, and thus hist_entries pointing to it and drop the ones that had none. Will be done in a followup patch. Cc: David S. Miller <davem@davemloft.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
50 lines
1.3 KiB
C
50 lines
1.3 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 thread {
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union {
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struct rb_node rb_node;
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struct list_head node;
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};
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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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struct perf_session;
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void thread__delete(struct thread *self);
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int find_all_tid(int pid, pid_t ** all_tid);
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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 perf_session__fprintf(struct perf_session *self, FILE *fp);
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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, pid_t pid, 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, pid_t pid, u64 addr,
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struct addr_location *al,
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symbol_filter_t filter);
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#endif /* __PERF_THREAD_H */
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