From 2b9240cafe9780f77b257321b13c4c4d2c2d0dc8 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 23 Sep 2014 10:01:43 +0900 Subject: [PATCH] perf tools: Introduce perf_callchain_config() This patch adds support for following config options to ~/.perfconfig file. [call-graph] record-mode = dwarf dump-size = 8192 print-type = fractal order = callee threshold = 0.5 print-limit = 128 sort-key = function Reviewed-by: David Ahern Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: David Ahern Cc: Ingo Molnar Cc: Jiri Olsa Cc: Milian Wolff Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1411434104-5307-5-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/callchain.c | 109 +++++++++++++++++++++++++++++------- tools/perf/util/callchain.h | 1 + tools/perf/util/config.c | 3 + 3 files changed, 94 insertions(+), 19 deletions(-) diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index ba7297230143..c84d3f8dcb75 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -109,6 +109,49 @@ int parse_callchain_record_opt(const char *arg) return ret; } +static int parse_callchain_mode(const char *value) +{ + if (!strncmp(value, "graph", strlen(value))) { + callchain_param.mode = CHAIN_GRAPH_ABS; + return 0; + } + if (!strncmp(value, "flat", strlen(value))) { + callchain_param.mode = CHAIN_FLAT; + return 0; + } + if (!strncmp(value, "fractal", strlen(value))) { + callchain_param.mode = CHAIN_GRAPH_REL; + return 0; + } + return -1; +} + +static int parse_callchain_order(const char *value) +{ + if (!strncmp(value, "caller", strlen(value))) { + callchain_param.order = ORDER_CALLER; + return 0; + } + if (!strncmp(value, "callee", strlen(value))) { + callchain_param.order = ORDER_CALLEE; + return 0; + } + return -1; +} + +static int parse_callchain_sort_key(const char *value) +{ + if (!strncmp(value, "function", strlen(value))) { + callchain_param.key = CCKEY_FUNCTION; + return 0; + } + if (!strncmp(value, "address", strlen(value))) { + callchain_param.key = CCKEY_ADDRESS; + return 0; + } + return -1; +} + int parse_callchain_report_opt(const char *arg) { @@ -128,25 +171,12 @@ parse_callchain_report_opt(const char *arg) return 0; } - /* try to get the output mode */ - if (!strncmp(tok, "graph", strlen(tok))) - callchain_param.mode = CHAIN_GRAPH_ABS; - else if (!strncmp(tok, "flat", strlen(tok))) - callchain_param.mode = CHAIN_FLAT; - else if (!strncmp(tok, "fractal", strlen(tok))) - callchain_param.mode = CHAIN_GRAPH_REL; - /* try to get the call chain order */ - else if (!strncmp(tok, "caller", strlen(tok))) - callchain_param.order = ORDER_CALLER; - else if (!strncmp(tok, "callee", strlen(tok))) - callchain_param.order = ORDER_CALLEE; - /* try to get the sort key */ - else if (!strncmp(tok, "function", strlen(tok))) - callchain_param.key = CCKEY_FUNCTION; - else if (!strncmp(tok, "address", strlen(tok))) - callchain_param.key = CCKEY_ADDRESS; - /* try to get the min percent */ - else if (!minpcnt_set) { + if (!parse_callchain_mode(tok) || + !parse_callchain_order(tok) || + !parse_callchain_sort_key(tok)) { + /* parsing ok - move on to the next */ + } else if (!minpcnt_set) { + /* try to get the min percent */ callchain_param.min_percent = strtod(tok, &endptr); if (tok == endptr) return -1; @@ -168,6 +198,47 @@ parse_callchain_report_opt(const char *arg) return 0; } +int perf_callchain_config(const char *var, const char *value) +{ + char *endptr; + + if (prefixcmp(var, "call-graph.")) + return 0; + var += sizeof("call-graph.") - 1; + + if (!strcmp(var, "record-mode")) + return parse_callchain_record_opt(value); +#ifdef HAVE_DWARF_UNWIND_SUPPORT + if (!strcmp(var, "dump-size")) { + unsigned long size = 0; + int ret; + + ret = get_stack_size(value, &size); + callchain_param.dump_size = size; + + return ret; + } +#endif + if (!strcmp(var, "print-type")) + return parse_callchain_mode(value); + if (!strcmp(var, "order")) + return parse_callchain_order(value); + if (!strcmp(var, "sort-key")) + return parse_callchain_sort_key(value); + if (!strcmp(var, "threshold")) { + callchain_param.min_percent = strtod(value, &endptr); + if (value == endptr) + return -1; + } + if (!strcmp(var, "print-limit")) { + callchain_param.print_limit = strtod(value, &endptr); + if (value == endptr) + 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 8adfbf0bab5c..2a1f5a46543a 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -170,6 +170,7 @@ int fill_callchain_info(struct addr_location *al, struct callchain_cursor_node * extern const char record_callchain_help[]; int parse_callchain_record_opt(const char *arg); int parse_callchain_report_opt(const char *arg); +int perf_callchain_config(const char *var, const char *value); static inline void callchain_cursor_snapshot(struct callchain_cursor *dest, struct callchain_cursor *src) diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c index 9970b8b0190b..953512ed72ba 100644 --- a/tools/perf/util/config.c +++ b/tools/perf/util/config.c @@ -396,6 +396,9 @@ int perf_default_config(const char *var, const char *value, if (!prefixcmp(var, "ui.")) return perf_ui_config(var, value); + if (!prefixcmp(var, "call-graph.")) + return perf_callchain_config(var, value); + /* Add other config variables here. */ return 0; } -- 2.20.1