mirror of
https://github.com/torvalds/linux
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a1225decc4
The homebrewn sort algorithm fails to sort in time order. One of the problem spots is that it fails to deal with equal timestamps correctly. My first gut reaction was to replace the fancy list with an rbtree, but the performance is 3 times worse. Rewrite it so it works. Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> LKML-Reference: <20101130163819.908482530@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
#ifndef __PERF_SESSION_H
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#define __PERF_SESSION_H
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#include "hist.h"
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#include "event.h"
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#include "header.h"
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#include "symbol.h"
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#include "thread.h"
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#include <linux/rbtree.h>
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#include "../../../include/linux/perf_event.h"
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struct sample_queue;
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struct ip_callchain;
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struct thread;
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struct ordered_samples {
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u64 last_flush;
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u64 next_flush;
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u64 max_timestamp;
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struct list_head samples;
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struct sample_queue *last_sample;
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};
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struct perf_session {
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struct perf_header header;
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unsigned long size;
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unsigned long mmap_window;
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struct rb_root threads;
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struct list_head dead_threads;
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struct thread *last_match;
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struct machine host_machine;
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struct rb_root machines;
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struct rb_root hists_tree;
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/*
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* FIXME: should point to the first entry in hists_tree and
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* be a hists instance. Right now its only 'report'
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* that is using ->hists_tree while all the rest use
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* ->hists.
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*/
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struct hists hists;
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u64 sample_type;
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int fd;
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bool fd_pipe;
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bool repipe;
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int cwdlen;
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char *cwd;
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struct ordered_samples ordered_samples;
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char filename[0];
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};
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struct perf_event_ops;
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typedef int (*event_op)(event_t *self, struct perf_session *session);
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typedef int (*event_op2)(event_t *self, struct perf_session *session,
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struct perf_event_ops *ops);
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struct perf_event_ops {
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event_op sample,
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mmap,
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comm,
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fork,
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exit,
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lost,
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read,
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throttle,
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unthrottle,
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attr,
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event_type,
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tracing_data,
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build_id;
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event_op2 finished_round;
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bool ordered_samples;
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};
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struct perf_session *perf_session__new(const char *filename, int mode, bool force, bool repipe);
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void perf_session__delete(struct perf_session *self);
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void perf_event_header__bswap(struct perf_event_header *self);
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int __perf_session__process_events(struct perf_session *self,
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u64 data_offset, u64 data_size, u64 size,
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struct perf_event_ops *ops);
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int perf_session__process_events(struct perf_session *self,
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struct perf_event_ops *event_ops);
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struct map_symbol *perf_session__resolve_callchain(struct perf_session *self,
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struct thread *thread,
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struct ip_callchain *chain,
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struct symbol **parent);
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bool perf_session__has_traces(struct perf_session *self, const char *msg);
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int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps,
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const char *symbol_name,
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u64 addr);
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void mem_bswap_64(void *src, int byte_size);
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int perf_session__create_kernel_maps(struct perf_session *self);
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int do_read(int fd, void *buf, size_t size);
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void perf_session__update_sample_type(struct perf_session *self);
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void perf_session__remove_thread(struct perf_session *self, struct thread *th);
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static inline
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struct machine *perf_session__find_host_machine(struct perf_session *self)
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{
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return &self->host_machine;
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}
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static inline
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struct machine *perf_session__find_machine(struct perf_session *self, pid_t pid)
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{
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if (pid == HOST_KERNEL_ID)
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return &self->host_machine;
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return machines__find(&self->machines, pid);
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}
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static inline
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struct machine *perf_session__findnew_machine(struct perf_session *self, pid_t pid)
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{
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if (pid == HOST_KERNEL_ID)
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return &self->host_machine;
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return machines__findnew(&self->machines, pid);
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}
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static inline
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void perf_session__process_machines(struct perf_session *self,
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machine__process_t process)
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{
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process(&self->host_machine, self);
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return machines__process(&self->machines, process, self);
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}
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size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp);
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size_t perf_session__fprintf_dsos_buildid(struct perf_session *self,
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FILE *fp, bool with_hits);
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static inline
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size_t perf_session__fprintf_nr_events(struct perf_session *self, FILE *fp)
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{
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return hists__fprintf_nr_events(&self->hists, fp);
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}
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#endif /* __PERF_SESSION_H */
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