perf tools report: Add custom scripts to script menu

Add a way to define custom scripts through ~/.perfconfig, which are then
added to the scripts menu. The scripts get the same arguments as 'perf
script', in particular -i, --cpu, --tid.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190311144502.15423-10-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 28 insertions, 0 deletions

diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt
index 2d0fb7613134..95054a8176a2 100644
--- a/tools/perf/Documentation/perf-config.txt
+++ b/tools/perf/Documentation/perf-config.txt
@@ -590,6 +590,14 @@ samples.*::
                 Define how many ns worth of time to show
                 around samples in perf report sample context browser.
 
+scripts.*::
+
+        Any option defines a script that is added to the scripts menu
+        in the interactive perf browser and whose output is displayed.
+        The name of the option is the name, the value is a script command line.
+        The script gets the same options passed as a full perf script,
+        in particular -i perfdata file, --cpu, --tid
+
 SEE ALSO
 --------
 linkperf:perf[1]
diff --git a/tools/perf/ui/browsers/scripts.c b/tools/perf/ui/browsers/scripts.c
index 96e5cd3b0eee..27cf3ab88d13 100644
--- a/tools/perf/ui/browsers/scripts.c
+++ b/tools/perf/ui/browsers/scripts.c
@@ -6,6 +6,7 @@
 #include "../../util/symbol.h"
 #include "../browser.h"
 #include "../libslang.h"
+#include "config.h"
 
 #define SCRIPT_NAMELEN  128
 #define SCRIPT_MAX_NO   64
@@ -53,6 +54,24 @@ static int add_script_option(const char *name, const char *opt,
         return 0;
 }
 
+static int scripts_config(const char *var, const char *value, void *data)
+{
+        struct script_config *c = data;
+
+        if (!strstarts(var, "scripts."))
+                return -1;
+        if (c->index >= SCRIPT_MAX_NO)
+                return -1;
+        c->names[c->index] = strdup(var + 7);
+        if (!c->names[c->index])
+                return -1;
+        if (asprintf(&c->paths[c->index], "%s %s", value,
+                     c->extra_format) < 0)
+                return -1;
+        c->index++;
+        return 0;
+}
+
 /*
  * When success, will copy the full path of the selected script
  * into  the buffer pointed by script_name, and return 0.
@@ -87,6 +106,7 @@ static int list_scripts(char *script_name, bool *custom,
                           &scriptc);
         add_script_option("Show individual samples with source", "-F +srcline,+srccode",
                           &scriptc);
+        perf_config(scripts_config, &scriptc);
         custom_perf = scriptc.index;
         add_script_option("Show samples with custom perf script arguments", "", &scriptc);
         i = scriptc.index;