redonkable/alistair23-linux
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perf probe: Do not use map_load filters for function

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It is simpler to just do the loop, no need for globals and the last user
of such facility disappears.

Testing:

  # perf probe -F [a-z]*recvmsg
  aead_recvmsg
  compat_SyS_recvmsg
  compat_sys_recvmsg
  hash_recvmsg
  inet_recvmsg
  kernel_recvmsg
  netlink_recvmsg
  packet_recvmsg
  ping_recvmsg
  raw_recvmsg
  rawv6_recvmsg
  rng_recvmsg
  security_socket_recvmsg
  selinux_socket_recvmsg
  skcipher_recvmsg
  sock_common_recvmsg
  sock_no_recvmsg
  sock_recvmsg
  sys_recvmsg
  tcp_recvmsg
  udp_recvmsg
  udpv6_recvmsg
  unix_dgram_recvmsg
  unix_seqpacket_recvmsg
  unix_stream_recvmsg
  #

Without filters:

  # perf probe -F | tail -5
  zswap_pool_create
  zswap_pool_current
  zswap_update_total_size
  zswap_writeback_entry
  zswap_zpool_param_set
  #
  # perf probe -F | wc -l
  33311
  #

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/20160831130427.GA13095@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2016-08-31 10:04:27 -03:00
parent b55cc4ed20
commit fd2275984d
1 changed files with 10 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
tools/perf/util/probe-event.c
View file

@ -3289,24 +3289,10 @@ out:
return ret;
}
/* TODO: don't use a global variable for filter ... */
static struct strfilter *available_func_filter;
/*
* If a symbol corresponds to a function with global binding and
* matches filter return 0. For all others return 1.
*/
static int filter_available_functions(struct map *map __maybe_unused,
struct symbol *sym)
{
if (strfilter__compare(available_func_filter, sym->name))
return 0;
return 1;
}
int show_available_funcs(const char *target, struct strfilter *_filter,
bool user)
{
struct rb_node *nd;
struct map *map;
int ret;
@ -3324,9 +3310,7 @@ int show_available_funcs(const char *target, struct strfilter *_filter,
return -EINVAL;
}
/* Load symbols with given filter */
available_func_filter = _filter;
ret = map__load(map, filter_available_functions);
ret = map__load(map, NULL);
if (ret) {
if (ret == -2) {
char *str = strfilter__string(_filter);
@ -3343,7 +3327,14 @@ int show_available_funcs(const char *target, struct strfilter *_filter,
/* Show all (filtered) symbols */
setup_pager();
dso__fprintf_symbols_by_name(map->dso, map->type, stdout);
for (nd = rb_first(&map->dso->symbol_names[map->type]); nd; nd = rb_next(nd)) {
struct symbol_name_rb_node *pos = rb_entry(nd, struct symbol_name_rb_node, rb_node);
if (strfilter__compare(_filter, pos->sym.name))
printf("%s\n", pos->sym.name);
}
end:
if (user) {
map__put(map);