perf symbols: Provide libtraceevent callback to resolve kernel symbols
That provides the function signature expected by libtraceevent's pevent_set_function_resolver(). Acked-by: David Ahern <dsahern@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/n/tip-ie6hvlb6u15y4ulg9j1612zg@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
@@ -9,6 +9,7 @@
|
||||
#include <linux/kernel.h>
|
||||
#include <traceevent/event-parse.h>
|
||||
#include "trace-event.h"
|
||||
#include "machine.h"
|
||||
#include "util.h"
|
||||
|
||||
/*
|
||||
@@ -19,6 +20,7 @@
|
||||
* there.
|
||||
*/
|
||||
static struct trace_event tevent;
|
||||
static bool tevent_initialized;
|
||||
|
||||
int trace_event__init(struct trace_event *t)
|
||||
{
|
||||
@@ -32,6 +34,32 @@ int trace_event__init(struct trace_event *t)
|
||||
return pevent ? 0 : -1;
|
||||
}
|
||||
|
||||
static int trace_event__init2(void)
|
||||
{
|
||||
int be = traceevent_host_bigendian();
|
||||
struct pevent *pevent;
|
||||
|
||||
if (trace_event__init(&tevent))
|
||||
return -1;
|
||||
|
||||
pevent = tevent.pevent;
|
||||
pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT);
|
||||
pevent_set_file_bigendian(pevent, be);
|
||||
pevent_set_host_bigendian(pevent, be);
|
||||
tevent_initialized = true;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int trace_event__register_resolver(struct machine *machine)
|
||||
{
|
||||
if (!tevent_initialized && trace_event__init2())
|
||||
return -1;
|
||||
|
||||
return pevent_set_function_resolver(tevent.pevent,
|
||||
machine__resolve_kernel_addr,
|
||||
machine);
|
||||
}
|
||||
|
||||
void trace_event__cleanup(struct trace_event *t)
|
||||
{
|
||||
traceevent_unload_plugins(t->plugin_list, t->pevent);
|
||||
@@ -62,21 +90,8 @@ tp_format(const char *sys, const char *name)
|
||||
struct event_format*
|
||||
trace_event__tp_format(const char *sys, const char *name)
|
||||
{
|
||||
static bool initialized;
|
||||
|
||||
if (!initialized) {
|
||||
int be = traceevent_host_bigendian();
|
||||
struct pevent *pevent;
|
||||
|
||||
if (trace_event__init(&tevent))
|
||||
return NULL;
|
||||
|
||||
pevent = tevent.pevent;
|
||||
pevent_set_flag(pevent, PEVENT_NSEC_OUTPUT);
|
||||
pevent_set_file_bigendian(pevent, be);
|
||||
pevent_set_host_bigendian(pevent, be);
|
||||
initialized = true;
|
||||
}
|
||||
if (!tevent_initialized && trace_event__init2())
|
||||
return NULL;
|
||||
|
||||
return tp_format(sys, name);
|
||||
}
|
||||
|
Reference in New Issue
Block a user