diff options
author | Arnd Bergmann <arnd@arndb.de> | 2014-07-28 17:04:15 +0200 |
---|---|---|
committer | Arnd Bergmann <arnd@arndb.de> | 2014-07-28 17:04:15 +0200 |
commit | 565f46dc4d0c12dda1353dbd76314614c7069c20 (patch) | |
tree | a9e933f56e4f935bc3bb6b0d270b6be789fed6a9 /tools/perf/util/machine.c | |
parent | 4fd1f229c2bc39b7f35f2a9f9fb9892f2d665359 (diff) | |
parent | 9a3c4145af32125c5ee39c0272662b47307a8323 (diff) |
Merge tag 'v3.16-rc6' into next/dt
Update to Linux 3.16-rc6 as a dependency for the broadcom changes.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'tools/perf/util/machine.c')
-rw-r--r-- | tools/perf/util/machine.c | 54 |
1 files changed, 22 insertions, 32 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 0e5fea95d596..c73e1fc12e53 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -496,18 +496,6 @@ struct process_args { u64 start; }; -static int symbol__in_kernel(void *arg, const char *name, - char type __maybe_unused, u64 start) -{ - struct process_args *args = arg; - - if (strchr(name, '[')) - return 0; - - args->start = start; - return 1; -} - static void machine__get_kallsyms_filename(struct machine *machine, char *buf, size_t bufsz) { @@ -517,27 +505,41 @@ static void machine__get_kallsyms_filename(struct machine *machine, char *buf, scnprintf(buf, bufsz, "%s/proc/kallsyms", machine->root_dir); } -/* Figure out the start address of kernel map from /proc/kallsyms */ -static u64 machine__get_kernel_start_addr(struct machine *machine) +const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL}; + +/* Figure out the start address of kernel map from /proc/kallsyms. + * Returns the name of the start symbol in *symbol_name. Pass in NULL as + * symbol_name if it's not that important. + */ +static u64 machine__get_kernel_start_addr(struct machine *machine, + const char **symbol_name) { char filename[PATH_MAX]; - struct process_args args; + int i; + const char *name; + u64 addr = 0; machine__get_kallsyms_filename(machine, filename, PATH_MAX); if (symbol__restricted_filename(filename, "/proc/kallsyms")) return 0; - if (kallsyms__parse(filename, &args, symbol__in_kernel) <= 0) - return 0; + for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) { + addr = kallsyms__get_function_start(filename, name); + if (addr) + break; + } + + if (symbol_name) + *symbol_name = name; - return args.start; + return addr; } int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) { enum map_type type; - u64 start = machine__get_kernel_start_addr(machine); + u64 start = machine__get_kernel_start_addr(machine, NULL); for (type = 0; type < MAP__NR_TYPES; ++type) { struct kmap *kmap; @@ -852,23 +854,11 @@ static int machine__create_modules(struct machine *machine) return 0; } -const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL}; - int machine__create_kernel_maps(struct machine *machine) { struct dso *kernel = machine__get_kernel(machine); - char filename[PATH_MAX]; const char *name; - u64 addr = 0; - int i; - - machine__get_kallsyms_filename(machine, filename, PATH_MAX); - - for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) { - addr = kallsyms__get_function_start(filename, name); - if (addr) - break; - } + u64 addr = machine__get_kernel_start_addr(machine, &name); if (!addr) return -1; |