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tracing: add handler to trace_stat

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Currently, if a trace_stat user wants a handle to some private data,
the trace_stat infrastructure does not supply a way to do that.

This patch passes the trace_stat structure to the start function of
the trace_stat code.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
This commit is contained in:
Steven Rostedt
2009-03-24 13:38:36 -04:00
parent ee000b7f9f
commit 425480081e
4 changed files with 5 additions and 5 deletions
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4
kernel/trace/trace_branch.c
View File

@@ -263,7 +263,7 @@ static int branch_stat_show(struct seq_file *m, void *v)
return 0; return 0;
} }
static void *annotated_branch_stat_start(void) static void *annotated_branch_stat_start(struct tracer_stat *trace)
{ {
return __start_annotated_branch_profile; return __start_annotated_branch_profile;
} }
@@ -338,7 +338,7 @@ static int all_branch_stat_headers(struct seq_file *m)
return 0; return 0;
} }
static void *all_branch_stat_start(void) static void *all_branch_stat_start(struct tracer_stat *trace)
{ {
return __start_branch_profile; return __start_branch_profile;
} }

2
kernel/trace/trace_stat.c
View File

@@ -85,7 +85,7 @@ static int stat_seq_init(struct tracer_stat_session *session)
if (!ts->stat_cmp) if (!ts->stat_cmp)
ts->stat_cmp = dummy_cmp; ts->stat_cmp = dummy_cmp;
stat = ts->stat_start(); stat = ts->stat_start(ts);
if (!stat) if (!stat)
goto exit; goto exit;

2
kernel/trace/trace_stat.h
View File

@@ -12,7 +12,7 @@ struct tracer_stat {
/* The name of your stat file */ /* The name of your stat file */
const char *name; const char *name;
/* Iteration over statistic entries */ /* Iteration over statistic entries */
void *(*stat_start)(void); void *(*stat_start)(struct tracer_stat *trace);
void *(*stat_next)(void *prev, int idx); void *(*stat_next)(void *prev, int idx);
/* Compare two entries for stats sorting */ /* Compare two entries for stats sorting */
int (*stat_cmp)(void *p1, void *p2); int (*stat_cmp)(void *p1, void *p2);

2
kernel/trace/trace_workqueue.c
View File

@@ -152,7 +152,7 @@ static struct cpu_workqueue_stats *workqueue_stat_start_cpu(int cpu)
return ret; return ret;
} }
static void *workqueue_stat_start(void) static void *workqueue_stat_start(struct tracer_stat *trace)
{ {
int cpu; int cpu;
void *ret = NULL; void *ret = NULL;