diff options
Diffstat (limited to 'kernel/trace/ftrace.c')
| -rw-r--r-- | kernel/trace/ftrace.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index acfa4e029bcc..8e842f68b9a5 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -8257,6 +8257,10 @@ struct kallsyms_data { size_t found; }; +/* This function gets called for all kernel and module symbols + * and returns 1 in case we resolved all the requested symbols, + * 0 otherwise. + */ static int kallsyms_callback(void *data, const char *name, struct module *mod, unsigned long addr) { @@ -8299,17 +8303,19 @@ static int kallsyms_callback(void *data, const char *name, int ftrace_lookup_symbols(const char **sorted_syms, size_t cnt, unsigned long *addrs) { struct kallsyms_data args; - int err; + int found_all; memset(addrs, 0, sizeof(*addrs) * cnt); args.addrs = addrs; args.syms = sorted_syms; args.cnt = cnt; args.found = 0; - err = kallsyms_on_each_symbol(kallsyms_callback, &args); - if (err < 0) - return err; - return args.found == args.cnt ? 0 : -ESRCH; + + found_all = kallsyms_on_each_symbol(kallsyms_callback, &args); + if (found_all) + return 0; + found_all = module_kallsyms_on_each_symbol(kallsyms_callback, &args); + return found_all ? 0 : -ESRCH; } #ifdef CONFIG_SYSCTL |