linux_dsm_epyc7002/tools/perf/util/thread.h
Andi Kleen dd2e18e9ac perf tools: Support 'srccode' output
When looking at PT or brstackinsn traces with 'perf script' it can be
very useful to see the source code. This adds a simple facility to print
them with 'perf script', if the information is available through dwarf

  % perf record ...
  % perf script -F insn,ip,sym,srccode
  ...

            4004c6 main
  5               for (i = 0; i < 10000000; i++)
             4004cd main
  5               for (i = 0; i < 10000000; i++)
             4004c6 main
  5               for (i = 0; i < 10000000; i++)
             4004cd main
  5               for (i = 0; i < 10000000; i++)
             4004cd main
  5               for (i = 0; i < 10000000; i++)
             4004cd main
  5               for (i = 0; i < 10000000; i++)
             4004cd main
  5               for (i = 0; i < 10000000; i++)
             4004cd main
  5               for (i = 0; i < 10000000; i++)
             4004b3 main
  6                       v++;

  % perf record -b ...
  % perf script -F insn,ip,sym,srccode,brstackinsn

  ...
         main+22:
          0000000000400543        insn: e8 ca ff ff ff            # PRED
  |18                     f1();
          f1:
          0000000000400512        insn: 55
  |10       {
          0000000000400513        insn: 48 89 e5
          0000000000400516        insn: b8 00 00 00 00
  |11             f2();
          000000000040051b        insn: e8 d6 ff ff ff            # PRED
          f2:
          00000000004004f6        insn: 55
  |5        {
          00000000004004f7        insn: 48 89 e5
          00000000004004fa        insn: 8b 05 2c 0b 20 00
  |6              c = a / b;
          0000000000400500        insn: 8b 0d 2a 0b 20 00
          0000000000400506        insn: 99
          0000000000400507        insn: f7 f9
          0000000000400509        insn: 89 05 29 0b 20 00
          000000000040050f        insn: 90
  |7        }
          0000000000400510        insn: 5d
          0000000000400511        insn: c3                        # PRED
          f1+14:
          0000000000400520        insn: b8 00 00 00 00
  |12             f2();
          0000000000400525        insn: e8 cc ff ff ff            # PRED
          f2:
          00000000004004f6        insn: 55
  |5        {
          00000000004004f7        insn: 48 89 e5
          00000000004004fa        insn: 8b 05 2c 0b 20 00
  |6              c = a / b;

Not supported for callchains currently, would need some layout changes
there.

Committer notes:

Fixed the build on Alpine Linux (3.4 .. 3.8) by addressing this
warning:

  In file included from util/srccode.c:19:0:
  /usr/include/sys/fcntl.h:1:2: error: #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h> [-Werror=cpp]
   #warning redirecting incorrect #include <sys/fcntl.h> to <fcntl.h>
    ^~~~~~~
  cc1: all warnings being treated as errors

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20181204001848.24769-1-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-12-17 14:57:07 -03:00

143 lines
3.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_THREAD_H
#define __PERF_THREAD_H
#include <linux/refcount.h>
#include <linux/rbtree.h>
#include <linux/list.h>
#include <unistd.h>
#include <sys/types.h>
#include "symbol.h"
#include "map.h"
#include <strlist.h>
#include <intlist.h>
#include "rwsem.h"
struct thread_stack;
struct unwind_libunwind_ops;
struct thread {
union {
struct rb_node rb_node;
struct list_head node;
};
struct map_groups *mg;
pid_t pid_; /* Not all tools update this */
pid_t tid;
pid_t ppid;
int cpu;
refcount_t refcnt;
bool comm_set;
int comm_len;
bool dead; /* if set thread has exited */
struct list_head namespaces_list;
struct rw_semaphore namespaces_lock;
struct list_head comm_list;
struct rw_semaphore comm_lock;
u64 db_id;
void *priv;
struct thread_stack *ts;
struct nsinfo *nsinfo;
struct srccode_state srccode_state;
#ifdef HAVE_LIBUNWIND_SUPPORT
void *addr_space;
struct unwind_libunwind_ops *unwind_libunwind_ops;
#endif
bool filter;
int filter_entry_depth;
};
struct machine;
struct namespaces;
struct comm;
struct thread *thread__new(pid_t pid, pid_t tid);
int thread__init_map_groups(struct thread *thread, struct machine *machine);
void thread__delete(struct thread *thread);
struct thread *thread__get(struct thread *thread);
void thread__put(struct thread *thread);
static inline void __thread__zput(struct thread **thread)
{
thread__put(*thread);
*thread = NULL;
}
#define thread__zput(thread) __thread__zput(&thread)
static inline void thread__exited(struct thread *thread)
{
thread->dead = true;
}
struct namespaces *thread__namespaces(const struct thread *thread);
int thread__set_namespaces(struct thread *thread, u64 timestamp,
struct namespaces_event *event);
int __thread__set_comm(struct thread *thread, const char *comm, u64 timestamp,
bool exec);
static inline int thread__set_comm(struct thread *thread, const char *comm,
u64 timestamp)
{
return __thread__set_comm(thread, comm, timestamp, false);
}
int thread__set_comm_from_proc(struct thread *thread);
int thread__comm_len(struct thread *thread);
struct comm *thread__comm(const struct thread *thread);
struct comm *thread__exec_comm(const struct thread *thread);
const char *thread__comm_str(const struct thread *thread);
int thread__insert_map(struct thread *thread, struct map *map);
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp, bool do_maps_clone);
size_t thread__fprintf(struct thread *thread, FILE *fp);
struct thread *thread__main_thread(struct machine *machine, struct thread *thread);
struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
struct addr_location *al);
struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
struct addr_location *al);
struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
u64 addr, struct addr_location *al);
struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
u64 addr, struct addr_location *al);
void thread__find_cpumode_addr_location(struct thread *thread, u64 addr,
struct addr_location *al);
static inline void *thread__priv(struct thread *thread)
{
return thread->priv;
}
static inline void thread__set_priv(struct thread *thread, void *p)
{
thread->priv = p;
}
static inline bool thread__is_filtered(struct thread *thread)
{
if (symbol_conf.comm_list &&
!strlist__has_entry(symbol_conf.comm_list, thread__comm_str(thread))) {
return true;
}
if (symbol_conf.pid_list &&
!intlist__has_entry(symbol_conf.pid_list, thread->pid_)) {
return true;
}
if (symbol_conf.tid_list &&
!intlist__has_entry(symbol_conf.tid_list, thread->tid)) {
return true;
}
return false;
}
#endif /* __PERF_THREAD_H */