lkml.org 
[lkml]   [2013]   [Sep]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 08/24] tools list traceevent: Add pevent_print_func_field function
Date
Adding pevent_print_func_field function to print a field
and a format for function pointers. It's used in following
patches.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: David Ahern <dsahern@gmail.com>
---
tools/lib/traceevent/event-parse.c | 42 ++++++++++++++++++++++++++++++++++++++
tools/lib/traceevent/event-parse.h | 4 ++++
2 files changed, 46 insertions(+)

diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index d1c2a6a..7bc75d6 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -5326,6 +5326,48 @@ int pevent_print_num_field(struct trace_seq *s, const char *fmt,
return -1;
}

+/**
+ * pevent_print_func_field - print a field and a format for function pointers
+ * @s: The seq to print to
+ * @fmt: The printf format to print the field with.
+ * @event: the event that the field is for
+ * @name: The name of the field
+ * @record: The record with the field name.
+ * @err: print default error if failed.
+ *
+ * Returns: 0 on success, -1 field not found, or 1 if buffer is full.
+ */
+int pevent_print_func_field(struct trace_seq *s, const char *fmt,
+ struct event_format *event, const char *name,
+ struct pevent_record *record, int err)
+{
+ struct format_field *field = pevent_find_field(event, name);
+ struct pevent *pevent = event->pevent;
+ unsigned long long val;
+ struct func_map *func;
+ char tmp[128];
+
+ if (!field)
+ goto failed;
+
+ if (pevent_read_number_field(field, record->data, &val))
+ goto failed;
+
+ func = find_func(pevent, val);
+
+ if (func)
+ snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val);
+ else
+ sprintf(tmp, "0x%08llx", val);
+
+ return trace_seq_printf(s, fmt, tmp);
+
+ failed:
+ if (err)
+ trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name);
+ return -1;
+}
+
static void free_func_handle(struct pevent_function_handler *func)
{
struct pevent_func_params *params;
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 1199934..a2d6306 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -581,6 +581,10 @@ int pevent_print_num_field(struct trace_seq *s, const char *fmt,
struct event_format *event, const char *name,
struct pevent_record *record, int err);

+int pevent_print_func_field(struct trace_seq *s, const char *fmt,
+ struct event_format *event, const char *name,
+ struct pevent_record *record, int err);
+
int pevent_register_event_handler(struct pevent *pevent, int id,
const char *sys_name, const char *event_name,
pevent_event_handler_func func, void *context);
--
1.7.11.7


\
 
 \ /
  Last update: 2013-09-01 14:21    [W:0.195 / U:0.188 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site