From 85e00b55517a5696282b80836655e6b6f5702df0 Mon Sep 17 00:00:00 2001 From: Jovi Zhang Date: Thu, 9 Sep 2010 13:30:59 -0300 Subject: [PATCH] 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 Cc: Davidlohr Bueso Signed-off-by: Jovi Zhang LKML-Reference: AANLkTi=9Cn=R8SPMCRp5z+gEjXbaBHeb-AaOtRbuwwcn@mail.gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol.c | 7 +++++++ tools/perf/util/symbol.h | 3 ++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 1a367734e01..b2f5ae97f33 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 b7a8da4af5a..ea95c2756f0 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; -- 2.20.1