From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [for-next][PATCH 09/25] tracing: Move "display-graph" option to main options
Date: Thu, 01 Oct 2015 07:55:33 -0400 [thread overview]
Message-ID: <20151001115637.515516891@goodmis.org> (raw)
In-Reply-To: 20151001115524.066462793@goodmis.org
[-- Attachment #1: 0009-tracing-Move-display-graph-option-to-main-options.patch --]
[-- Type: text/plain, Size: 8693 bytes --]
From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
In order to facilitate making all tracer options visible even when the
tracer is not active, we need to get rid of duplicate options. Any option
that is shared between multiple tracers really should be a main option.
As the wakeup and irqsoff tracers both use the "display-graph" option, and
use it exactly the same way, move that option from the tracer options to the
main options and consolidate them.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/trace/trace.c | 1 +
kernel/trace/trace.h | 1 +
kernel/trace/trace_irqsoff.c | 46 ++++++++++++---------------------------
kernel/trace/trace_sched_wakeup.c | 46 ++++++++++++---------------------------
4 files changed, 30 insertions(+), 64 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 5d3ce2900d64..9a4ef5afb41c 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -882,6 +882,7 @@ static const char *trace_options[] = {
"irq-info",
"markers",
"function-trace",
+ "display-graph",
NULL
};
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 107cf081ac27..dfa3cd2feb22 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -913,6 +913,7 @@ enum trace_iterator_flags {
TRACE_ITER_IRQ_INFO = 0x800000,
TRACE_ITER_MARKERS = 0x1000000,
TRACE_ITER_FUNCTION = 0x2000000,
+ TRACE_ITER_DISPLAY_GRAPH = 0x4000000,
};
/*
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,
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index c29d49e0102b..f5d2e65e7c92 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -40,22 +40,17 @@ static void wakeup_graph_return(struct ftrace_graph_ret *trace);
static int save_flags;
static bool function_enabled;
-#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 wakeup_display_graph(struct trace_array *tr, int set);
+#else
+static inline int wakeup_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)
#ifdef CONFIG_FUNCTION_TRACER
@@ -163,12 +158,13 @@ static void unregister_wakeup_function(struct trace_array *tr, int graph)
function_enabled = false;
}
-static void wakeup_function_set(struct trace_array *tr, int set)
+static int wakeup_function_set(struct trace_array *tr, int set)
{
if (set)
register_wakeup_function(tr, is_graph(), 1);
else
unregister_wakeup_function(tr, is_graph());
+ return 0;
}
static int wakeup_flag_changed(struct trace_array *tr, u32 mask, int set)
@@ -176,7 +172,10 @@ 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(tr, set);
+ return wakeup_function_set(tr, set);
+
+ if (mask & TRACE_ITER_DISPLAY_GRAPH)
+ return wakeup_display_graph(tr, set);
return trace_keep_overwrite(tracer, mask, set);
}
@@ -203,13 +202,8 @@ static void stop_func_tracer(struct trace_array *tr, int graph)
}
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-static int
-wakeup_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
+static int wakeup_display_graph(struct trace_array *tr, int set)
{
-
- if (!(bit & TRACE_DISPLAY_GRAPH))
- return -EINVAL;
-
if (!(is_graph() ^ set))
return 0;
@@ -306,12 +300,6 @@ __trace_function(struct trace_array *tr,
#else
#define __trace_function trace_function
-static int
-wakeup_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set)
-{
- return -EINVAL;
-}
-
static int wakeup_graph_entry(struct ftrace_graph_ent *trace)
{
return -1;
@@ -740,8 +728,6 @@ static struct tracer wakeup_tracer __read_mostly =
.print_max = true,
.print_header = wakeup_print_header,
.print_line = wakeup_print_line,
- .flags = &tracer_flags,
- .set_flag = wakeup_set_flag,
.flag_changed = wakeup_flag_changed,
#ifdef CONFIG_FTRACE_SELFTEST
.selftest = trace_selftest_startup_wakeup,
@@ -762,8 +748,6 @@ static struct tracer wakeup_rt_tracer __read_mostly =
.print_max = true,
.print_header = wakeup_print_header,
.print_line = wakeup_print_line,
- .flags = &tracer_flags,
- .set_flag = wakeup_set_flag,
.flag_changed = wakeup_flag_changed,
#ifdef CONFIG_FTRACE_SELFTEST
.selftest = trace_selftest_startup_wakeup,
@@ -784,8 +768,6 @@ static struct tracer wakeup_dl_tracer __read_mostly =
.print_max = true,
.print_header = wakeup_print_header,
.print_line = wakeup_print_line,
- .flags = &tracer_flags,
- .set_flag = wakeup_set_flag,
.flag_changed = wakeup_flag_changed,
#ifdef CONFIG_FTRACE_SELFTEST
.selftest = trace_selftest_startup_wakeup,
--
2.5.1
next prev parent reply other threads:[~2015-10-01 12:01 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-01 11:55 [for-next][PATCH 00/25] tracing: Have instances have their own options + clean ups Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 01/25] kernel/trace_probe: is_good_name can be boolean Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 02/25] tracing: Move non perf code out of perf.h Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 03/25] tracing: Remove ftrace_trace_stack_regs() Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 04/25] tracing: Remove unused function trace_current_buffer_lock_reserve() Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 05/25] tracing: Pass trace_array into trace_buffer_unlock_commit() Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 06/25] tracing: Make ftrace_trace_stack() static Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 07/25] tracing: Inject seq_print_userip_objs() into its only user Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 08/25] tracing: Turn seq_print_user_ip() into a static function Steven Rostedt
2015-10-01 11:55 ` Steven Rostedt [this message]
2015-10-01 11:55 ` [for-next][PATCH 10/25] tracing: Remove unused tracing option "ftrace_preempt" Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 11/25] tracing: Use enums instead of hard coded bitmasks for TRACE_ITER flags Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 12/25] tracing: Use TRACE_FLAGS macro to keep enums and strings matched Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 13/25] tracing: Only create function graph options when it is compiled in Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 14/25] tracing: Only create branch tracer options when " Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 15/25] tracing: Do not create function tracer options when not " Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 16/25] tracing: Only create stacktrace option when STACKTRACE is configured Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 17/25] tracing: Always show all tracer options in the options directory Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 18/25] tracing: Add build bug if we have more trace_flags than bits Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 19/25] tracing: Remove access to trace_flags in trace_printk.c Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 20/25] tracing: Move sleep-time and graph-time options out of the core trace_flags Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 21/25] tracing: Move trace_flags from global to a trace_array field Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 22/25] tracing: Add a method to pass in trace_array descriptor to option files Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 23/25] tracing: Make ftrace_trace_stack() depend on general trace_array flag Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 24/25] tracing: Add trace options for core options to instances Steven Rostedt
2015-10-01 11:55 ` [for-next][PATCH 25/25] tracing: Add trace options for tracer " Steven Rostedt
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