9215545e99
Bypasses the tracing_data perf header code and replaces it with a synthesized event and processing function that accomplishes the same thing, used when reading/writing perf data to/from a pipe. The tracing data is pretty large, and this patch doesn't attempt to break it down into component events. The tracing_data event itself doesn't actually contain the tracing data, rather it arranges for the event processing code to skip over it after it's read, using the skip return value added to the event processing loop in a previous patch. Signed-off-by: Tom Zanussi <tzanussi@gmail.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: fweisbec@gmail.com Cc: rostedt@goodmis.org Cc: k-keiichi@bx.jp.nec.com Cc: acme@ghostprotocols.net LKML-Reference: <1270184365-8281-8-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
121 lines
3.3 KiB
C
121 lines
3.3 KiB
C
#ifndef __PERF_HEADER_H
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#define __PERF_HEADER_H
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#include "../../../include/linux/perf_event.h"
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#include <sys/types.h>
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#include <stdbool.h>
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#include "types.h"
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#include "event.h"
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#include <linux/bitmap.h>
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struct perf_header_attr {
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struct perf_event_attr attr;
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int ids, size;
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u64 *id;
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off_t id_offset;
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};
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enum {
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HEADER_TRACE_INFO = 1,
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HEADER_BUILD_ID,
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HEADER_LAST_FEATURE,
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};
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#define HEADER_FEAT_BITS 256
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struct perf_file_section {
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u64 offset;
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u64 size;
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};
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struct perf_file_header {
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u64 magic;
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u64 size;
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u64 attr_size;
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struct perf_file_section attrs;
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struct perf_file_section data;
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struct perf_file_section event_types;
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DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
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};
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struct perf_pipe_file_header {
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u64 magic;
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u64 size;
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};
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struct perf_header;
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int perf_file_header__read(struct perf_file_header *self,
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struct perf_header *ph, int fd);
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struct perf_header {
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int frozen;
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int attrs, size;
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bool needs_swap;
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struct perf_header_attr **attr;
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s64 attr_offset;
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u64 data_offset;
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u64 data_size;
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u64 event_offset;
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u64 event_size;
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DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
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};
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int perf_header__init(struct perf_header *self);
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void perf_header__exit(struct perf_header *self);
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int perf_header__read(struct perf_session *session, int fd);
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int perf_header__write(struct perf_header *self, int fd, bool at_exit);
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int perf_header__write_pipe(int fd);
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int perf_header__add_attr(struct perf_header *self,
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struct perf_header_attr *attr);
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int perf_header__push_event(u64 id, const char *name);
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char *perf_header__find_event(u64 id);
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struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr);
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void perf_header_attr__delete(struct perf_header_attr *self);
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int perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
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u64 perf_header__sample_type(struct perf_header *header);
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struct perf_event_attr *
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perf_header__find_attr(u64 id, struct perf_header *header);
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void perf_header__set_feat(struct perf_header *self, int feat);
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bool perf_header__has_feat(const struct perf_header *self, int feat);
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int perf_header__process_sections(struct perf_header *self, int fd,
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int (*process)(struct perf_file_section *self,
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struct perf_header *ph,
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int feat, int fd));
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int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
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const char *name, bool is_kallsyms);
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int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir);
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int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id,
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event__handler_t process,
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struct perf_session *session);
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int event__synthesize_attrs(struct perf_header *self,
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event__handler_t process,
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struct perf_session *session);
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int event__process_attr(event_t *self, struct perf_session *session);
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int event__synthesize_event_type(u64 event_id, char *name,
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event__handler_t process,
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struct perf_session *session);
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int event__synthesize_event_types(event__handler_t process,
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struct perf_session *session);
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int event__process_event_type(event_t *self,
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struct perf_session *session);
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int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs,
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int nb_events,
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event__handler_t process,
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struct perf_session *session);
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int event__process_tracing_data(event_t *self,
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struct perf_session *session);
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#endif /* __PERF_HEADER_H */
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