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tracing: Pass trace_array to flag_changed callback 

As options (flags) may affect instances instead of being global
the flag_changed() callbacks need to receive the trace_array descriptor
of the instance they will be modifying.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2014-01-10 17:51:01 -05:00 committed by Steven Rostedt
parent 8c1a49aedb
commit bf6065b5c7
4 changed files with 8 additions and 4 deletions
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2
kernel/trace/trace.c
View File

@ -3393,7 +3393,7 @@ int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled)
/* Give the tracer a chance to approve the change */
if (tr->current_trace->flag_changed)
if (tr->current_trace->flag_changed(tr->current_trace, mask, !!enabled))
if (tr->current_trace->flag_changed(tr, mask, !!enabled))
return -EINVAL;
if (enabled)

2
kernel/trace/trace.h
View File

@ -358,7 +358,7 @@ struct tracer {
int (*set_flag)(struct trace_array *tr,
u32 old_flags, u32 bit, int set);
/* Return 0 if OK with change, else return non-zero */
int (*flag_changed)(struct tracer *tracer,
int (*flag_changed)(struct trace_array *tr,
u32 mask, int set);
struct tracer *next;
struct tracer_flags *flags;

4
kernel/trace/trace_irqsoff.c
View File

@ -572,8 +572,10 @@ static void irqsoff_function_set(int set)
unregister_irqsoff_function(is_graph());
}
static int irqsoff_flag_changed(struct tracer *tracer, u32 mask, int set)
static int irqsoff_flag_changed(struct trace_array *tr, u32 mask, int set)
{
struct tracer *tracer = tr->current_trace;
if (mask & TRACE_ITER_FUNCTION)
irqsoff_function_set(set);

4
kernel/trace/trace_sched_wakeup.c
View File

@ -179,8 +179,10 @@ static void wakeup_function_set(int set)
unregister_wakeup_function(is_graph());
}
static int wakeup_flag_changed(struct tracer *tracer, u32 mask, int set)
static int wakeup_flag_changed(struct trace_array *tr, u32 mask, int set)
{
struct tracer *tracer = tr->current_trace;
if (mask & TRACE_ITER_FUNCTION)
wakeup_function_set(set);