perf tools: Add a global variable "const char *input_name"
Currently many perf commands annotate/evlist/report/script/lock etc all
support "-i" option to chose a specific perf data, and all of them
create a local "input_name" to save the file name for that perf data.
Since most of these commands need it, we can add a global variable for
it, also it can some other benefits:
1. When calling script browser inside hists/annotation browser, it needs
to know the perf data file name to run that script.
2. For further feature like runtime switching to another perf data file,
this variable can also help.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1351569369-26732-2-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index 14bf82f..0b4b796 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -477,7 +477,7 @@
__sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
}
-static int __cmd_kmem(const char *input_name)
+static int __cmd_kmem(void)
{
int err = -EINVAL;
struct perf_session *session;
@@ -743,7 +743,6 @@
int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
{
const char * const default_sort_order = "frag,hit,bytes";
- const char *input_name = NULL;
const struct option kmem_options[] = {
OPT_STRING('i', "input", &input_name, "file", "input file name"),
OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL,
@@ -779,7 +778,7 @@
if (list_empty(&alloc_sort))
setup_sorting(&alloc_sort, default_sort_order);
- return __cmd_kmem(input_name);
+ return __cmd_kmem();
} else
usage_with_options(kmem_usage, kmem_options);