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author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-06-03 07:20:15 +0400 |
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committer | Jiri Olsa <jolsa@kernel.org> | 2014-06-08 01:33:37 +0400 |
commit | 49440828ad7b809e9d31f6108875e3b1e974690c (patch) | |
tree | 73a9c6e1d464a99db3d444bcc400e5e8acba9889 | |
parent | 5827f2faabe40cc285cc67b697277547a19b6c9a (diff) | |
download | linux-49440828ad7b809e9d31f6108875e3b1e974690c.tar.xz |
tools lib traceevent: Add options to function plugin
Add the options "parent" and "indent" to the function plugin.
When parent is set, the output looks like this:
function: fsnotify_modify <-- vfs_write
function: zone_statistics <-- get_page_from_freelist
function: __inc_zone_state <-- zone_statistics
function: inotify_inode_queue_event <-- fsnotify_modify
function: fsnotify_parent <-- fsnotify_modify
function: __inc_zone_state <-- zone_statistics
function: __fsnotify_parent <-- fsnotify_parent
function: inotify_dentry_parent_queue_event <-- fsnotify_parent
function: add_to_page_cache_lru <-- do_read_cache_page
When it's not set, it looks like:
function: fsnotify_modify
function: zone_statistics
function: __inc_zone_state
function: inotify_inode_queue_event
function: fsnotify_parent
function: __inc_zone_state
function: __fsnotify_parent
function: inotify_dentry_parent_queue_event
function: add_to_page_cache_lru
When the otpion "indent" is not set, it looks like this:
function: fsnotify_modify <-- vfs_write
function: zone_statistics <-- get_page_from_freelist
function: __inc_zone_state <-- zone_statistics
function: inotify_inode_queue_event <-- fsnotify_modify
function: fsnotify_parent <-- fsnotify_modify
function: __inc_zone_state <-- zone_statistics
function: __fsnotify_parent <-- fsnotify_parent
function: inotify_dentry_parent_queue_event <-- fsnotify_parent
function: add_to_page_cache_lru <-- do_read_cache_page
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20140603032224.056940410@goodmis.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
-rw-r--r-- | tools/lib/traceevent/plugin_function.c | 43 |
1 files changed, 37 insertions, 6 deletions
diff --git a/tools/lib/traceevent/plugin_function.c b/tools/lib/traceevent/plugin_function.c index 80ba4ff1fe84..a00ec190821a 100644 --- a/tools/lib/traceevent/plugin_function.c +++ b/tools/lib/traceevent/plugin_function.c @@ -33,6 +33,29 @@ static int cpus = -1; #define STK_BLK 10 +struct pevent_plugin_option plugin_options[] = +{ + { + .name = "parent", + .plugin_alias = "ftrace", + .description = + "Print parent of functions for function events", + }, + { + .name = "indent", + .plugin_alias = "ftrace", + .description = + "Try to show function call indents, based on parents", + .set = 1, + }, + { + .name = NULL, + } +}; + +static struct pevent_plugin_option *ftrace_parent = &plugin_options[0]; +static struct pevent_plugin_option *ftrace_indent = &plugin_options[1]; + static void add_child(struct func_stack *stack, const char *child, int pos) { int i; @@ -119,7 +142,8 @@ static int function_handler(struct trace_seq *s, struct pevent_record *record, parent = pevent_find_function(pevent, pfunction); - index = add_and_get_index(parent, func, record->cpu); + if (parent && ftrace_indent->set) + index = add_and_get_index(parent, func, record->cpu); trace_seq_printf(s, "%*s", index*3, ""); @@ -128,11 +152,13 @@ static int function_handler(struct trace_seq *s, struct pevent_record *record, else trace_seq_printf(s, "0x%llx", function); - trace_seq_printf(s, " <-- "); - if (parent) - trace_seq_printf(s, "%s", parent); - else - trace_seq_printf(s, "0x%llx", pfunction); + if (ftrace_parent->set) { + trace_seq_printf(s, " <-- "); + if (parent) + trace_seq_printf(s, "%s", parent); + else + trace_seq_printf(s, "0x%llx", pfunction); + } return 0; } @@ -141,6 +167,9 @@ int PEVENT_PLUGIN_LOADER(struct pevent *pevent) { pevent_register_event_handler(pevent, -1, "ftrace", "function", function_handler, NULL); + + traceevent_plugin_add_options("ftrace", plugin_options); + return 0; } @@ -157,6 +186,8 @@ void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent) free(fstack[i].stack); } + traceevent_plugin_remove_options(plugin_options); + free(fstack); fstack = NULL; cpus = -1; |