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| author | Jovi Zhang <bookjovi@gmail.com> | 2010-09-09 18:30:59 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-09-09 22:43:35 +0200 |
| commit | 85e00b55517a5696282b80836655e6b6f5702df0 (patch) | |
| tree | ce9e06bed532b0cd473266ccbf86d2f7dd22ee86 /tools | |
| parent | tracing/kprobe: Fix handling of C-unlike argument names (diff) | |
| download | linux-85e00b55517a5696282b80836655e6b6f5702df0.tar.xz linux-85e00b55517a5696282b80836655e6b6f5702df0.zip | |
perf symbols: Fix multiple initialization of symbol system
By returning immediately if it was already initialized, do it as well at
symbol__exit, refusing multiple deinitializations.
This fixes problems in the kmem, sched and timechart commands.
Reported-by: Davidlohr Bueso <dave@gnu.org>
Cc: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Jovi Zhang <bookjovi@gmail.com>
LKML-Reference: AANLkTi=9Cn=R8SPMCRp5z+gEjXbaBHeb-AaOtRbuwwcn@mail.gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/symbol.c | 7 | ||||
| -rw-r--r-- | tools/perf/util/symbol.h | 3 |
2 files changed, 9 insertions, 1 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 1a367734e016..b2f5ae97f33d 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -2268,6 +2268,9 @@ static int setup_list(struct strlist **list, const char *list_str, int symbol__init(void) { + if (symbol_conf.initialized) + return 0; + elf_version(EV_CURRENT); if (symbol_conf.sort_by_name) symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) - @@ -2293,6 +2296,7 @@ int symbol__init(void) symbol_conf.sym_list_str, "symbol") < 0) goto out_free_comm_list; + symbol_conf.initialized = true; return 0; out_free_dso_list: @@ -2304,11 +2308,14 @@ out_free_comm_list: void symbol__exit(void) { + if (!symbol_conf.initialized) + return; strlist__delete(symbol_conf.sym_list); strlist__delete(symbol_conf.dso_list); strlist__delete(symbol_conf.comm_list); vmlinux_path__exit(); symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL; + symbol_conf.initialized = false; } int machines__create_kernel_maps(struct rb_root *self, pid_t pid) diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index b7a8da4af5a0..ea95c2756f05 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -69,7 +69,8 @@ struct symbol_conf { show_nr_samples, use_callchain, exclude_other, - show_cpu_utilization; + show_cpu_utilization, + initialized; const char *vmlinux_name, *source_prefix, *field_sep; |