perf-eh_elf/util/annotate.h
Linus Torvalds 16c00db4bb Merge tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
Pull AFS fixes from David Howells:
 "Here's a set of patches that fix a number of bugs in the in-kernel AFS
  client, including:

   - Fix directory locking to not use individual page locks for
     directory reading/scanning but rather to use a semaphore on the
     afs_vnode struct as the directory contents must be read in a single
     blob and data from different reads must not be mixed as the entire
     contents may be shuffled about between reads.

   - Fix address list parsing to handle port specifiers correctly.

   - Only give up callback records on a server if we actually talked to
     that server (we might not be able to access a server).

   - Fix some callback handling bugs, including refcounting,
     whole-volume callbacks and when callbacks actually get broken in
     response to a CB.CallBack op.

   - Fix some server/address rotation bugs, including giving up if we
     can't probe a server; giving up if a server says it doesn't have a
     volume, but there are more servers to try.

   - Fix the decoding of fetched statuses to be OpenAFS compatible.

   - Fix the handling of server lookups in Cache Manager ops (such as
     CB.InitCallBackState3) to use a UUID if possible and to handle no
     server being found.

   - Fix a bug in server lookup where not all addresses are compared.

   - Fix the non-encryption of calls that prevents some servers from
     being accessed (this also requires an AF_RXRPC patch that has
     already gone in through the net tree).

  There's also a patch that adds tracepoints to log Cache Manager ops
  that don't find a matching server, either by UUID or by address"

* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  afs: Fix the non-encryption of calls
  afs: Fix CB.CallBack handling
  afs: Fix whole-volume callback handling
  afs: Fix afs_find_server search loop
  afs: Fix the handling of an unfound server in CM operations
  afs: Add a tracepoint to record callbacks from unlisted servers
  afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
  afs: Fix VNOVOL handling in address rotation
  afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
  afs: Fix server rotation's handling of fileserver probe failure
  afs: Fix refcounting in callback registration
  afs: Fix giving up callbacks on server destruction
  afs: Fix address list parsing
  afs: Fix directory page locking
2018-05-15 10:48:36 -07:00

352 lines
9.5 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_ANNOTATE_H
#define __PERF_ANNOTATE_H
#include <stdbool.h>
#include <stdint.h>
#include <linux/types.h>
#include "symbol.h"
#include "hist.h"
#include "sort.h"
#include <linux/list.h>
#include <linux/rbtree.h>
#include <pthread.h>
struct ins_ops;
struct ins {
const char *name;
struct ins_ops *ops;
};
struct ins_operands {
char *raw;
struct {
char *raw;
char *name;
struct symbol *sym;
u64 addr;
s64 offset;
bool offset_avail;
bool outside;
} target;
union {
struct {
char *raw;
char *name;
u64 addr;
} source;
struct {
struct ins ins;
struct ins_operands *ops;
} locked;
};
};
struct arch;
struct ins_ops {
void (*free)(struct ins_operands *ops);
int (*parse)(struct arch *arch, struct ins_operands *ops, struct map_symbol *ms);
int (*scnprintf)(struct ins *ins, char *bf, size_t size,
struct ins_operands *ops);
};
bool ins__is_jump(const struct ins *ins);
bool ins__is_call(const struct ins *ins);
bool ins__is_ret(const struct ins *ins);
bool ins__is_lock(const struct ins *ins);
int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops);
bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2);
#define ANNOTATION__IPC_WIDTH 6
#define ANNOTATION__CYCLES_WIDTH 6
struct annotation_options {
bool hide_src_code,
use_offset,
jump_arrows,
show_linenr,
show_nr_jumps,
show_nr_samples,
show_total_period;
u8 offset_level;
};
enum {
ANNOTATION__OFFSET_JUMP_TARGETS = 1,
ANNOTATION__OFFSET_CALL,
ANNOTATION__MAX_OFFSET_LEVEL,
};
#define ANNOTATION__MIN_OFFSET_LEVEL ANNOTATION__OFFSET_JUMP_TARGETS
extern struct annotation_options annotation__default_options;
struct annotation;
struct sym_hist_entry {
u64 nr_samples;
u64 period;
};
struct annotation_data {
double percent;
double percent_sum;
struct sym_hist_entry he;
};
struct annotation_line {
struct list_head node;
struct rb_node rb_node;
s64 offset;
char *line;
int line_nr;
int jump_sources;
float ipc;
u64 cycles;
size_t privsize;
char *path;
u32 idx;
int idx_asm;
int samples_nr;
struct annotation_data samples[0];
};
struct disasm_line {
struct ins ins;
struct ins_operands ops;
/* This needs to be at the end. */
struct annotation_line al;
};
static inline struct disasm_line *disasm_line(struct annotation_line *al)
{
return al ? container_of(al, struct disasm_line, al) : NULL;
}
/*
* Is this offset in the same function as the line it is used?
* asm functions jump to other functions, for instance.
*/
static inline bool disasm_line__has_local_offset(const struct disasm_line *dl)
{
return dl->ops.target.offset_avail && !dl->ops.target.outside;
}
/*
* Can we draw an arrow from the jump to its target, for instance? I.e.
* is the jump and its target in the same function?
*/
bool disasm_line__is_valid_local_jump(struct disasm_line *dl, struct symbol *sym);
void disasm_line__free(struct disasm_line *dl);
struct annotation_line *
annotation_line__next(struct annotation_line *pos, struct list_head *head);
struct annotation_write_ops {
bool first_line, current_entry, change_color;
int width;
void *obj;
int (*set_color)(void *obj, int color);
void (*set_percent_color)(void *obj, double percent, bool current);
int (*set_jumps_percent_color)(void *obj, int nr, bool current);
void (*printf)(void *obj, const char *fmt, ...);
void (*write_graph)(void *obj, int graph);
};
double annotation_line__max_percent(struct annotation_line *al, struct annotation *notes);
void annotation_line__write(struct annotation_line *al, struct annotation *notes,
struct annotation_write_ops *ops);
int __annotation__scnprintf_samples_period(struct annotation *notes,
char *bf, size_t size,
struct perf_evsel *evsel,
bool show_freq);
static inline int annotation__scnprintf_samples_period(struct annotation *notes,
char *bf, size_t size,
struct perf_evsel *evsel)
{
return __annotation__scnprintf_samples_period(notes, bf, size, evsel, true);
}
int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
size_t disasm__fprintf(struct list_head *head, FILE *fp);
void symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel);
struct sym_hist {
u64 nr_samples;
u64 period;
struct sym_hist_entry addr[0];
};
struct cyc_hist {
u64 start;
u64 cycles;
u64 cycles_aggr;
u32 num;
u32 num_aggr;
u8 have_start;
/* 1 byte padding */
u16 reset;
};
/** struct annotated_source - symbols with hits have this attached as in sannotation
*
* @histogram: Array of addr hit histograms per event being monitored
* @lines: If 'print_lines' is specified, per source code line percentages
* @source: source parsed from a disassembler like objdump -dS
* @cyc_hist: Average cycles per basic block
*
* lines is allocated, percentages calculated and all sorted by percentage
* when the annotation is about to be presented, so the percentages are for
* one of the entries in the histogram array, i.e. for the event/counter being
* presented. It is deallocated right after symbol__{tui,tty,etc}_annotate
* returns.
*/
struct annotated_source {
struct list_head source;
int nr_histograms;
size_t sizeof_sym_hist;
struct cyc_hist *cycles_hist;
struct sym_hist histograms[0];
};
struct annotation {
pthread_mutex_t lock;
u64 max_coverage;
u64 start;
struct annotation_options *options;
struct annotation_line **offsets;
int nr_events;
int nr_jumps;
int max_jump_sources;
int nr_entries;
int nr_asm_entries;
u16 max_line_len;
struct {
u8 addr;
u8 jumps;
u8 target;
u8 min_addr;
u8 max_addr;
} widths;
bool have_cycles;
struct annotated_source *src;
};
static inline int annotation__cycles_width(struct annotation *notes)
{
return notes->have_cycles ? ANNOTATION__IPC_WIDTH + ANNOTATION__CYCLES_WIDTH : 0;
}
static inline int annotation__pcnt_width(struct annotation *notes)
{
return (notes->options->show_total_period ? 12 : 7) * notes->nr_events;
}
static inline bool annotation_line__filter(struct annotation_line *al, struct annotation *notes)
{
return notes->options->hide_src_code && al->offset == -1;
}
void annotation__set_offsets(struct annotation *notes, s64 size);
void annotation__compute_ipc(struct annotation *notes, size_t size);
void annotation__mark_jump_targets(struct annotation *notes, struct symbol *sym);
void annotation__update_column_widths(struct annotation *notes);
void annotation__init_column_widths(struct annotation *notes, struct symbol *sym);
static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
{
return (((void *)&notes->src->histograms) +
(notes->src->sizeof_sym_hist * idx));
}
static inline struct annotation *symbol__annotation(struct symbol *sym)
{
return (void *)sym - symbol_conf.priv_size;
}
int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
int evidx);
int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
struct addr_map_symbol *start,
unsigned cycles);
int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
int evidx, u64 addr);
int symbol__alloc_hist(struct symbol *sym);
void symbol__annotate_zero_histograms(struct symbol *sym);
int symbol__annotate(struct symbol *sym, struct map *map,
struct perf_evsel *evsel, size_t privsize,
struct arch **parch);
int symbol__annotate2(struct symbol *sym, struct map *map,
struct perf_evsel *evsel,
struct annotation_options *options,
struct arch **parch);
enum symbol_disassemble_errno {
SYMBOL_ANNOTATE_ERRNO__SUCCESS = 0,
/*
* Choose an arbitrary negative big number not to clash with standard
* errno since SUS requires the errno has distinct positive values.
* See 'Issue 6' in the link below.
*
* http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
*/
__SYMBOL_ANNOTATE_ERRNO__START = -10000,
SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX = __SYMBOL_ANNOTATE_ERRNO__START,
__SYMBOL_ANNOTATE_ERRNO__END,
};
int symbol__strerror_disassemble(struct symbol *sym, struct map *map,
int errnum, char *buf, size_t buflen);
int symbol__annotate_printf(struct symbol *sym, struct map *map,
struct perf_evsel *evsel, bool full_paths,
int min_pcnt, int max_lines, int context);
int symbol__annotate_fprintf2(struct symbol *sym, FILE *fp);
void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
void annotated_source__purge(struct annotated_source *as);
int map_symbol__annotation_dump(struct map_symbol *ms, struct perf_evsel *evsel);
bool ui__has_annotation(void);
int symbol__tty_annotate(struct symbol *sym, struct map *map,
struct perf_evsel *evsel, bool print_lines,
bool full_paths, int min_pcnt, int max_lines);
int symbol__tty_annotate2(struct symbol *sym, struct map *map,
struct perf_evsel *evsel, bool print_lines,
bool full_paths);
#ifdef HAVE_SLANG_SUPPORT
int symbol__tui_annotate(struct symbol *sym, struct map *map,
struct perf_evsel *evsel,
struct hist_browser_timer *hbt);
#else
static inline int symbol__tui_annotate(struct symbol *sym __maybe_unused,
struct map *map __maybe_unused,
struct perf_evsel *evsel __maybe_unused,
struct hist_browser_timer *hbt
__maybe_unused)
{
return 0;
}
#endif
extern const char *disassembler_style;
void annotation_config__init(void);
#endif /* __PERF_ANNOTATE_H */