forked from luck/tmp_suning_uos_patched
8dc58101f2
This patch makes several changes to allow the perf event stream to be sent and received over a pipe: - adds pipe-specific versions of the header read/write code - adds pipe-specific version of the event processing code - adds a range of event types to be used for header or other pseudo events, above the range used by the kernel - checks the return value of event handlers, which they can use to skip over large events during event processing rather than actually reading them into event objects. - unifies the multiple do_read() functions and updates its users. Note that none of these changes affect the existing perf data file format or processing - this code only comes into play if perf output is sent to stdout (or is read from stdin). 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: <1270184365-8281-2-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
#ifndef __PERF_SESSION_H
|
|
#define __PERF_SESSION_H
|
|
|
|
#include "event.h"
|
|
#include "header.h"
|
|
#include "symbol.h"
|
|
#include "thread.h"
|
|
#include <linux/rbtree.h>
|
|
#include "../../../include/linux/perf_event.h"
|
|
|
|
struct ip_callchain;
|
|
struct thread;
|
|
|
|
struct perf_session {
|
|
struct perf_header header;
|
|
unsigned long size;
|
|
unsigned long mmap_window;
|
|
struct map_groups kmaps;
|
|
struct rb_root threads;
|
|
struct thread *last_match;
|
|
struct map *vmlinux_maps[MAP__NR_TYPES];
|
|
struct events_stats events_stats;
|
|
struct rb_root stats_by_id;
|
|
unsigned long event_total[PERF_RECORD_MAX];
|
|
unsigned long unknown_events;
|
|
struct rb_root hists;
|
|
u64 sample_type;
|
|
struct ref_reloc_sym ref_reloc_sym;
|
|
int fd;
|
|
bool fd_pipe;
|
|
int cwdlen;
|
|
char *cwd;
|
|
char filename[0];
|
|
};
|
|
|
|
typedef int (*event_op)(event_t *self, struct perf_session *session);
|
|
|
|
struct perf_event_ops {
|
|
event_op sample,
|
|
mmap,
|
|
comm,
|
|
fork,
|
|
exit,
|
|
lost,
|
|
read,
|
|
throttle,
|
|
unthrottle;
|
|
};
|
|
|
|
struct perf_session *perf_session__new(const char *filename, int mode, bool force);
|
|
void perf_session__delete(struct perf_session *self);
|
|
|
|
void perf_event_header__bswap(struct perf_event_header *self);
|
|
|
|
int __perf_session__process_events(struct perf_session *self,
|
|
u64 data_offset, u64 data_size, u64 size,
|
|
struct perf_event_ops *ops);
|
|
int perf_session__process_events(struct perf_session *self,
|
|
struct perf_event_ops *event_ops);
|
|
|
|
struct map_symbol *perf_session__resolve_callchain(struct perf_session *self,
|
|
struct thread *thread,
|
|
struct ip_callchain *chain,
|
|
struct symbol **parent);
|
|
|
|
bool perf_session__has_traces(struct perf_session *self, const char *msg);
|
|
|
|
int perf_header__read_build_ids(struct perf_header *self, int input,
|
|
u64 offset, u64 file_size);
|
|
|
|
int perf_session__set_kallsyms_ref_reloc_sym(struct perf_session *self,
|
|
const char *symbol_name,
|
|
u64 addr);
|
|
|
|
void mem_bswap_64(void *src, int byte_size);
|
|
|
|
static inline int __perf_session__create_kernel_maps(struct perf_session *self,
|
|
struct dso *kernel)
|
|
{
|
|
return __map_groups__create_kernel_maps(&self->kmaps,
|
|
self->vmlinux_maps, kernel);
|
|
}
|
|
|
|
static inline int perf_session__create_kernel_maps(struct perf_session *self)
|
|
{
|
|
return map_groups__create_kernel_maps(&self->kmaps, self->vmlinux_maps);
|
|
}
|
|
|
|
static inline struct map *
|
|
perf_session__new_module_map(struct perf_session *self,
|
|
u64 start, const char *filename)
|
|
{
|
|
return map_groups__new_module(&self->kmaps, start, filename);
|
|
}
|
|
|
|
int do_read(int fd, void *buf, size_t size);
|
|
void perf_session__update_sample_type(struct perf_session *self);
|
|
|
|
#ifdef NO_NEWT_SUPPORT
|
|
static inline int perf_session__browse_hists(struct rb_root *hists __used,
|
|
u64 nr_hists __used,
|
|
u64 session_total __used,
|
|
const char *helpline __used,
|
|
const char *input_name __used)
|
|
{
|
|
return 0;
|
|
}
|
|
#else
|
|
int perf_session__browse_hists(struct rb_root *hists, u64 nr_hists,
|
|
u64 session_total, const char *helpline,
|
|
const char *input_name);
|
|
#endif
|
|
#endif /* __PERF_SESSION_H */
|