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perf machine: Add machine__get_kallsyms_filename()

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Separate out the logic used to make the kallsyms full path name for a
machine.  It will be reused in a subsequent patch.

Signed-off-by: Adrian Hunter <[email protected]>
Tested-by: Jiri Olsa <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Adrian Hunter 2014-01-29 16:14:38 +02:00 • committed by Arnaldo Carvalho de Melo
commit 15a0a8706c
1 changed files with 11 additions and 8 deletions
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19
tools/perf/util/machine.c
View file

@ -496,19 +496,22 @@ static int symbol__in_kernel(void *arg, const char *name,
return 1;
}
static void machine__get_kallsyms_filename(struct machine *machine, char *buf,
size_t bufsz)
{
if (machine__is_default_guest(machine))
scnprintf(buf, bufsz, "%s", symbol_conf.default_guest_kallsyms);
else
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 *filename;
char path[PATH_MAX];
char filename[PATH_MAX];
struct process_args args;
if (machine__is_default_guest(machine))
filename = (char *)symbol_conf.default_guest_kallsyms;
else {
sprintf(path, "%s/proc/kallsyms", machine->root_dir);
filename = path;
}
machine__get_kallsyms_filename(machine, filename, PATH_MAX);
if (symbol__restricted_filename(filename, "/proc/kallsyms"))
return 0;