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>
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@ -2268,6 +2268,9 @@ static int setup_list(struct strlist **list, const char *list_str,
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int symbol__init(void)
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int symbol__init(void)
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{
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{
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if (symbol_conf.initialized)
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return 0;
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elf_version(EV_CURRENT);
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elf_version(EV_CURRENT);
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if (symbol_conf.sort_by_name)
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if (symbol_conf.sort_by_name)
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symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) -
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symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) -
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@ -2293,6 +2296,7 @@ int symbol__init(void)
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symbol_conf.sym_list_str, "symbol") < 0)
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symbol_conf.sym_list_str, "symbol") < 0)
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goto out_free_comm_list;
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goto out_free_comm_list;
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symbol_conf.initialized = true;
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return 0;
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return 0;
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out_free_dso_list:
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out_free_dso_list:
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@ -2304,11 +2308,14 @@ out_free_comm_list:
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void symbol__exit(void)
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void symbol__exit(void)
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{
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{
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if (!symbol_conf.initialized)
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return;
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strlist__delete(symbol_conf.sym_list);
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strlist__delete(symbol_conf.sym_list);
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strlist__delete(symbol_conf.dso_list);
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strlist__delete(symbol_conf.dso_list);
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strlist__delete(symbol_conf.comm_list);
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strlist__delete(symbol_conf.comm_list);
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vmlinux_path__exit();
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vmlinux_path__exit();
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symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL;
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symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL;
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symbol_conf.initialized = false;
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}
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}
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int machines__create_kernel_maps(struct rb_root *self, pid_t pid)
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int machines__create_kernel_maps(struct rb_root *self, pid_t pid)
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@ -69,7 +69,8 @@ struct symbol_conf {
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show_nr_samples,
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show_nr_samples,
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use_callchain,
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use_callchain,
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exclude_other,
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exclude_other,
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show_cpu_utilization;
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show_cpu_utilization,
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initialized;
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const char *vmlinux_name,
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const char *vmlinux_name,
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*source_prefix,
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*source_prefix,
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*field_sep;
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*field_sep;
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