diff options
Diffstat (limited to 'kernel/trace/trace_irqsoff.c')
| -rw-r--r-- | kernel/trace/trace_irqsoff.c | 46 |
1 files changed, 14 insertions, 32 deletions
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c index 8523ea345f2b..446480a86123 100644 --- a/kernel/trace/trace_irqsoff.c +++ b/kernel/trace/trace_irqsoff.c @@ -57,22 +57,16 @@ irq_trace(void) # define irq_trace() (0) #endif -#define TRACE_DISPLAY_GRAPH 1 +#define is_graph() (trace_flags & TRACE_ITER_DISPLAY_GRAPH) -static struct tracer_opt trace_opts[] = { #ifdef CONFIG_FUNCTION_GRAPH_TRACER - /* display latency trace as call graph */ - { TRACER_OPT(display-graph, TRACE_DISPLAY_GRAPH) }, +static int irqsoff_display_graph(struct trace_array *tr, int set); +#else +static inline int irqsoff_display_graph(struct trace_array *tr, int set) +{ + return -EINVAL; +} #endif - { } /* Empty entry */ -}; - -static struct tracer_flags tracer_flags = { - .val = 0, - .opts = trace_opts, -}; - -#define is_graph() (tracer_flags.val & TRACE_DISPLAY_GRAPH) /* * Sequence count - we record it when starting a measurement and @@ -152,14 +146,10 @@ irqsoff_tracer_call(unsigned long ip, unsigned long parent_ip, #endif /* CONFIG_FUNCTION_TRACER */ #ifdef CONFIG_FUNCTION_GRAPH_TRACER -static int -irqsoff_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set) +static int irqsoff_display_graph(struct trace_array *tr, int set) { int cpu; - if (!(bit & TRACE_DISPLAY_GRAPH)) - return -EINVAL; - if (!(is_graph() ^ set)) return 0; @@ -259,12 +249,6 @@ __trace_function(struct trace_array *tr, #else #define __trace_function trace_function -static int -irqsoff_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set) -{ - return -EINVAL; -} - static int irqsoff_graph_entry(struct ftrace_graph_ent *trace) { return -1; @@ -556,12 +540,13 @@ static void unregister_irqsoff_function(struct trace_array *tr, int graph) function_enabled = false; } -static void irqsoff_function_set(struct trace_array *tr, int set) +static int irqsoff_function_set(struct trace_array *tr, int set) { if (set) register_irqsoff_function(tr, is_graph(), 1); else unregister_irqsoff_function(tr, is_graph()); + return 0; } static int irqsoff_flag_changed(struct trace_array *tr, u32 mask, int set) @@ -569,7 +554,10 @@ 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(tr, set); + return irqsoff_function_set(tr, set); + + if (mask & TRACE_ITER_DISPLAY_GRAPH) + return irqsoff_display_graph(tr, set); return trace_keep_overwrite(tracer, mask, set); } @@ -666,8 +654,6 @@ static struct tracer irqsoff_tracer __read_mostly = .print_max = true, .print_header = irqsoff_print_header, .print_line = irqsoff_print_line, - .flags = &tracer_flags, - .set_flag = irqsoff_set_flag, .flag_changed = irqsoff_flag_changed, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_irqsoff, @@ -700,8 +686,6 @@ static struct tracer preemptoff_tracer __read_mostly = .print_max = true, .print_header = irqsoff_print_header, .print_line = irqsoff_print_line, - .flags = &tracer_flags, - .set_flag = irqsoff_set_flag, .flag_changed = irqsoff_flag_changed, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_preemptoff, @@ -736,8 +720,6 @@ static struct tracer preemptirqsoff_tracer __read_mostly = .print_max = true, .print_header = irqsoff_print_header, .print_line = irqsoff_print_line, - .flags = &tracer_flags, - .set_flag = irqsoff_set_flag, .flag_changed = irqsoff_flag_changed, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_preemptirqsoff, |