From 33a2471cc9b7b1fb27ff2031dbaff701644b1a4d Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 22 Jul 2015 12:36:55 -0300 Subject: tools lib traceevent: Allow setting an alternative symbol resolver The perf tools have a symbol resolver that includes solving kernel symbols using either kallsyms or ELF symtabs, and it also is using libtraceevent to format the trace events fields, including via subsystem specific plugins, like the "timer" one. To solve fields like "timer:hrtimer_start"'s "function", libtraceevent needs a way to map from its value to a function name and addr. This patch provides a way for tools that already have symbol resolving facilities to ask libtraceevent to use it when needing to resolve kernel symbols. Reviewed-by: Steven Rostedt Acked-by: David Ahern Cc: Adrian Hunter Cc: Borislav Petkov Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-fdx1fazols17w5py26ia3bwh@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/traceevent/event-parse.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'tools/lib/traceevent/event-parse.h') diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h index 063b1971eb35..204befb05a17 100644 --- a/tools/lib/traceevent/event-parse.h +++ b/tools/lib/traceevent/event-parse.h @@ -453,6 +453,10 @@ struct cmdline_list; struct func_map; struct func_list; struct event_handler; +struct func_resolver; + +typedef char *(pevent_func_resolver_t)(void *priv, + unsigned long long *addrp, char **modp); struct pevent { int ref_count; @@ -481,6 +485,7 @@ struct pevent { int cmdline_count; struct func_map *func_map; + struct func_resolver *func_resolver; struct func_list *funclist; unsigned int func_count; @@ -611,6 +616,9 @@ enum trace_flag_type { TRACE_FLAG_SOFTIRQ = 0x10, }; +int pevent_set_function_resolver(struct pevent *pevent, + pevent_func_resolver_t *func, void *priv); +void pevent_reset_function_resolver(struct pevent *pevent); int pevent_register_comm(struct pevent *pevent, const char *comm, int pid); int pevent_register_trace_clock(struct pevent *pevent, const char *trace_clock); int pevent_register_function(struct pevent *pevent, char *name, -- cgit v1.2.3