perf callchain: Add generic report parse callchain callback function

This takes the parse_callchain_opt function and copies it into the
callchain.c file.  Now the c2c tool can use it too without duplicating.

Update perf-report to use the new routine too.

Signed-off-by: Don Zickus <dzickus@redhat.com>
Reviewed-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1396896924-129847-5-git-send-email-dzickus@redhat.com
[ Adding missing braces to multiline if condition ]
Signed-off-by: Jiri Olsa <jolsa@redhat.com>

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index af8cb7a..76e2bb6 100644 (file)
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -589,11 +589,9 @@ static int __cmd_report(struct report *rep)
 }
 
 static int
-parse_callchain_opt(const struct option *opt, const char *arg, int unset)
+report_parse_callchain_opt(const struct option *opt, const char *arg, int unset)
 {
        struct report *rep = (struct report *)opt->value;
-       char *tok, *tok2;
-       char *endptr;
 
        /*
         * --no-call-graph
@@ -603,80 +601,7 @@ parse_callchain_opt(const struct option *opt, const char *arg, int unset)
                return 0;
        }
 
-       symbol_conf.use_callchain = true;
-
-       if (!arg)
-               return 0;
-
-       tok = strtok((char *)arg, ",");
-       if (!tok)
-               return -1;
-
-       /* get the output mode */
-       if (!strncmp(tok, "graph", strlen(arg)))
-               callchain_param.mode = CHAIN_GRAPH_ABS;
-
-       else if (!strncmp(tok, "flat", strlen(arg)))
-               callchain_param.mode = CHAIN_FLAT;
-
-       else if (!strncmp(tok, "fractal", strlen(arg)))
-               callchain_param.mode = CHAIN_GRAPH_REL;
-
-       else if (!strncmp(tok, "none", strlen(arg))) {
-               callchain_param.mode = CHAIN_NONE;
-               symbol_conf.use_callchain = false;
-
-               return 0;
-       }
-
-       else
-               return -1;
-
-       /* get the min percentage */
-       tok = strtok(NULL, ",");
-       if (!tok)
-               goto setup;
-
-       callchain_param.min_percent = strtod(tok, &endptr);
-       if (tok == endptr)
-               return -1;
-
-       /* get the print limit */
-       tok2 = strtok(NULL, ",");
-       if (!tok2)
-               goto setup;
-
-       if (tok2[0] != 'c') {
-               callchain_param.print_limit = strtoul(tok2, &endptr, 0);
-               tok2 = strtok(NULL, ",");
-               if (!tok2)
-                       goto setup;
-       }
-
-       /* get the call chain order */
-       if (!strncmp(tok2, "caller", strlen("caller")))
-               callchain_param.order = ORDER_CALLER;
-       else if (!strncmp(tok2, "callee", strlen("callee")))
-               callchain_param.order = ORDER_CALLEE;
-       else
-               return -1;
-
-       /* Get the sort key */
-       tok2 = strtok(NULL, ",");
-       if (!tok2)
-               goto setup;
-       if (!strncmp(tok2, "function", strlen("function")))
-               callchain_param.key = CCKEY_FUNCTION;
-       else if (!strncmp(tok2, "address", strlen("address")))
-               callchain_param.key = CCKEY_ADDRESS;
-       else
-               return -1;
-setup:
-       if (callchain_register_param(&callchain_param) < 0) {
-               pr_err("Can't register callchain params\n");
-               return -1;
-       }
-       return 0;
+       return parse_callchain_report_opt(arg);
 }
 
 int
@@ -788,7 +713,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
                    "Only display entries with parent-match"),
        OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent[,print_limit],call_order",
                     "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit, callchain order, key (function or address). "
-                    "Default: fractal,0.5,callee,function", &parse_callchain_opt, callchain_default_opt),
+                    "Default: fractal,0.5,callee,function", &report_parse_callchain_opt, callchain_default_opt),
        OPT_INTEGER(0, "max-stack", &report.max_stack,
                    "Set the maximum stack depth when parsing the callchain, "
                    "anything beyond the specified depth will be ignored. "

diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 8d9db45..9a42382 100644 (file)
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -25,6 +25,84 @@
 
 __thread struct callchain_cursor callchain_cursor;
 
+int
+parse_callchain_report_opt(const char *arg)
+{
+       char *tok, *tok2;
+       char *endptr;
+
+       symbol_conf.use_callchain = true;
+
+       if (!arg)
+               return 0;
+
+       tok = strtok((char *)arg, ",");
+       if (!tok)
+               return -1;
+
+       /* get the output mode */
+       if (!strncmp(tok, "graph", strlen(arg))) {
+               callchain_param.mode = CHAIN_GRAPH_ABS;
+
+       } else if (!strncmp(tok, "flat", strlen(arg))) {
+               callchain_param.mode = CHAIN_FLAT;
+       } else if (!strncmp(tok, "fractal", strlen(arg))) {
+               callchain_param.mode = CHAIN_GRAPH_REL;
+       } else if (!strncmp(tok, "none", strlen(arg))) {
+               callchain_param.mode = CHAIN_NONE;
+               symbol_conf.use_callchain = false;
+               return 0;
+       } else {
+               return -1;
+       }
+
+       /* get the min percentage */
+       tok = strtok(NULL, ",");
+       if (!tok)
+               goto setup;
+
+       callchain_param.min_percent = strtod(tok, &endptr);
+       if (tok == endptr)
+               return -1;
+
+       /* get the print limit */
+       tok2 = strtok(NULL, ",");
+       if (!tok2)
+               goto setup;
+
+       if (tok2[0] != 'c') {
+               callchain_param.print_limit = strtoul(tok2, &endptr, 0);
+               tok2 = strtok(NULL, ",");
+               if (!tok2)
+                       goto setup;
+       }
+
+       /* get the call chain order */
+       if (!strncmp(tok2, "caller", strlen("caller")))
+               callchain_param.order = ORDER_CALLER;
+       else if (!strncmp(tok2, "callee", strlen("callee")))
+               callchain_param.order = ORDER_CALLEE;
+       else
+               return -1;
+
+       /* Get the sort key */
+       tok2 = strtok(NULL, ",");
+       if (!tok2)
+               goto setup;
+       if (!strncmp(tok2, "function", strlen("function")))
+               callchain_param.key = CCKEY_FUNCTION;
+       else if (!strncmp(tok2, "address", strlen("address")))
+               callchain_param.key = CCKEY_ADDRESS;
+       else
+               return -1;
+setup:
+       if (callchain_register_param(&callchain_param) < 0) {
+               pr_err("Can't register callchain params\n");
+               return -1;
+       }
+       return 0;
+}
+
 static void
 rb_insert_callchain(struct rb_root *root, struct callchain_node *chain,
                    enum chain_mode mode)

diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 8ad97e9..dda4cf8 100644 (file)
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -157,4 +157,5 @@ int sample__resolve_callchain(struct perf_sample *sample, struct symbol **parent
 int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *sample);
 
 extern const char record_callchain_help[];
+int parse_callchain_report_opt(const char *arg);
 #endif /* __PERF_CALLCHAIN_H */