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tracing: Pass trace_array to set_flag callback 

As options (flags) may affect instances instead of being global
the set_flag() 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 11:13:54 -05:00 committed by Steven Rostedt
parent 6d0abeca32
commit 8c1a49aedb
8 changed files with 27 additions and 17 deletions
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3
kernel/trace/blktrace.c
View File

@ -1427,7 +1427,8 @@ static enum print_line_t blk_tracer_print_line(struct trace_iterator *iter)
return print_one_line(iter, true);
}
static int blk_tracer_set_flag(u32 old_flags, u32 bit, int set)
static int
blk_tracer_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
{
/* don't output context-info for blk_classic output */
if (bit == TRACE_BLK_OPT_CLASSIC) {

18
kernel/trace/trace.c
View File

@ -73,7 +73,8 @@ static struct tracer_flags dummy_tracer_flags = {
.opts = dummy_tracer_opt
};
static int dummy_set_flag(u32 old_flags, u32 bit, int set)
static int
dummy_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
{
return 0;
}
@ -3339,13 +3340,14 @@ static int tracing_trace_options_show(struct seq_file *m, void *v)
return 0;
}
static int __set_tracer_option(struct tracer *trace,
static int __set_tracer_option(struct trace_array *tr,
struct tracer_flags *tracer_flags,
struct tracer_opt *opts, int neg)
{
struct tracer *trace = tr->current_trace;
int ret;
ret = trace->set_flag(tracer_flags->val, opts->bit, !neg);
ret = trace->set_flag(tr, tracer_flags->val, opts->bit, !neg);
if (ret)
return ret;
@ -3357,8 +3359,9 @@ static int __set_tracer_option(struct tracer *trace,
}
/* Try to assign a tracer specific option */
static int set_tracer_option(struct tracer *trace, char *cmp, int neg)
static int set_tracer_option(struct trace_array *tr, char *cmp, int neg)
{
struct tracer *trace = tr->current_trace;
struct tracer_flags *tracer_flags = trace->flags;
struct tracer_opt *opts = NULL;
int i;
@ -3367,8 +3370,7 @@ static int set_tracer_option(struct tracer *trace, char *cmp, int neg)
opts = &tracer_flags->opts[i];
if (strcmp(cmp, opts->name) == 0)
return __set_tracer_option(trace, trace->flags,
opts, neg);
return __set_tracer_option(tr, trace->flags, opts, neg);
}
return -EINVAL;
@ -3440,7 +3442,7 @@ static int trace_set_options(struct trace_array *tr, char *option)
/* If no option could be set, test the specific tracer options */
if (!trace_options[i])
ret = set_tracer_option(tr->current_trace, cmp, neg);
ret = set_tracer_option(tr, cmp, neg);
mutex_unlock(&trace_types_lock);
@ -5689,7 +5691,7 @@ trace_options_write(struct file *filp, const char __user *ubuf, size_t cnt,
if (!!(topt->flags->val & topt->opt->bit) != val) {
mutex_lock(&trace_types_lock);
ret = __set_tracer_option(topt->tr->current_trace, topt->flags,
ret = __set_tracer_option(topt->tr, topt->flags,
topt->opt, !val);
mutex_unlock(&trace_types_lock);
if (ret)

3
kernel/trace/trace.h
View File

@ -355,7 +355,8 @@ struct tracer {
void (*print_header)(struct seq_file *m);
enum print_line_t (*print_line)(struct trace_iterator *iter);
/* If you handled the flag setting, return 0 */
int (*set_flag)(u32 old_flags, u32 bit, int set);
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,
u32 mask, int set);

3
kernel/trace/trace_functions.c
View File

@ -175,7 +175,8 @@ static void tracing_stop_function_trace(void)
unregister_ftrace_function(&trace_ops);
}
static int func_set_flag(u32 old_flags, u32 bit, int set)
static int
func_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
{
switch (bit) {
case TRACE_FUNC_OPT_STACK:

3
kernel/trace/trace_functions_graph.c
View File

@ -1476,7 +1476,8 @@ void graph_trace_close(struct trace_iterator *iter)
}
}
static int func_graph_set_flag(u32 old_flags, u32 bit, int set)
static int
func_graph_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
{
if (bit == TRACE_GRAPH_PRINT_IRQS)
ftrace_graph_skip_irqs = !set;

6
kernel/trace/trace_irqsoff.c
View File

@ -160,7 +160,8 @@ static struct ftrace_ops trace_ops __read_mostly =
#endif /* CONFIG_FUNCTION_TRACER */
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
static int irqsoff_set_flag(u32 old_flags, u32 bit, int set)
static int
irqsoff_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
{
int cpu;
@ -266,7 +267,8 @@ __trace_function(struct trace_array *tr,
#else
#define __trace_function trace_function
static int irqsoff_set_flag(u32 old_flags, u32 bit, int set)
static int
irqsoff_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
{
return -EINVAL;
}

2
kernel/trace/trace_nop.c
View File

@ -62,7 +62,7 @@ static void nop_trace_reset(struct trace_array *tr)
* If you don't implement it, then the flag setting will be
* automatically accepted.
*/
static int nop_set_flag(u32 old_flags, u32 bit, int set)
static int nop_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
{
/*
* Note that you don't need to update nop_flags.val yourself.

6
kernel/trace/trace_sched_wakeup.c
View File

@ -209,7 +209,8 @@ static void stop_func_tracer(int graph)
}
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
static int wakeup_set_flag(u32 old_flags, u32 bit, int set)
static int
wakeup_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
{
if (!(bit & TRACE_DISPLAY_GRAPH))
@ -311,7 +312,8 @@ __trace_function(struct trace_array *tr,
#else
#define __trace_function trace_function
static int wakeup_set_flag(u32 old_flags, u32 bit, int set)
static int
wakeup_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
{
return -EINVAL;
}