7f0030b211
When multiple events were used in 'perf record', allow the user to choose which one is wanted before showing the per event histograms. Annotations will be performed on the chosen event. Allow going back and forth from event to event quickly using just the arrow keys and enter. 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> Cc: William Cohen <wcohen@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
#ifndef __PERF_HIST_H
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#define __PERF_HIST_H
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#include <linux/types.h>
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#include "callchain.h"
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extern struct callchain_param callchain_param;
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struct hist_entry;
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struct addr_location;
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struct symbol;
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/*
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* The kernel collects the number of events it couldn't send in a stretch and
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* when possible sends this number in a PERF_RECORD_LOST event. The number of
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* such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while
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* total_lost tells exactly how many events the kernel in fact lost, i.e. it is
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* the sum of all struct lost_event.lost fields reported.
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*
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* The total_period is needed because by default auto-freq is used, so
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* multipling nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
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* the total number of low level events, it is necessary to to sum all struct
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* sample_event.period and stash the result in total_period.
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*/
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struct events_stats {
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u64 total_period;
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u64 total_lost;
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u64 total_invalid_chains;
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u32 nr_events[PERF_RECORD_HEADER_MAX];
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u32 nr_unknown_events;
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u32 nr_invalid_chains;
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};
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enum hist_column {
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HISTC_SYMBOL,
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HISTC_DSO,
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HISTC_THREAD,
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HISTC_COMM,
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HISTC_PARENT,
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HISTC_CPU,
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HISTC_NR_COLS, /* Last entry */
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};
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struct hists {
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struct rb_root entries;
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u64 nr_entries;
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struct events_stats stats;
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u64 event_stream;
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u16 col_len[HISTC_NR_COLS];
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/* Best would be to reuse the session callchain cursor */
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struct callchain_cursor callchain_cursor;
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};
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struct hist_entry *__hists__add_entry(struct hists *self,
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struct addr_location *al,
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struct symbol *parent, u64 period);
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extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
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extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
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int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
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struct hists *pair_hists, bool show_displacement,
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long displacement, FILE *fp, u64 total);
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int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
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struct hists *hists, struct hists *pair_hists,
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bool show_displacement, long displacement,
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bool color, u64 total);
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void hist_entry__free(struct hist_entry *);
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void hists__output_resort(struct hists *self);
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void hists__collapse_resort(struct hists *self);
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void hists__inc_nr_events(struct hists *self, u32 type);
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size_t hists__fprintf_nr_events(struct hists *self, FILE *fp);
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size_t hists__fprintf(struct hists *self, struct hists *pair,
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bool show_displacement, FILE *fp);
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int hist_entry__inc_addr_samples(struct hist_entry *self, int evidx, u64 addr);
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int hist_entry__annotate(struct hist_entry *self, size_t privsize);
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void hists__filter_by_dso(struct hists *self, const struct dso *dso);
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void hists__filter_by_thread(struct hists *self, const struct thread *thread);
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u16 hists__col_len(struct hists *self, enum hist_column col);
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void hists__set_col_len(struct hists *self, enum hist_column col, u16 len);
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bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len);
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struct perf_evlist;
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#ifdef NO_NEWT_SUPPORT
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static inline
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int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __used,
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const char *help __used)
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{
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return 0;
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}
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static inline int hist_entry__tui_annotate(struct hist_entry *self __used,
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int evidx __used)
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{
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return 0;
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}
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#define KEY_LEFT -1
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#define KEY_RIGHT -2
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#else
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#include <newt.h>
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int hist_entry__tui_annotate(struct hist_entry *self, int evidx);
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#define KEY_LEFT NEWT_KEY_LEFT
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#define KEY_RIGHT NEWT_KEY_RIGHT
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int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help);
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#endif
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unsigned int hists__sort_list_width(struct hists *self);
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#endif /* __PERF_HIST_H */
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