From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Namhyung Kim <namhyung@kernel.org>
Subject: [for-next][PATCH 3/6] ftrace: Get rid of ftrace_graph_filter_enabled
Date: Sun, 20 Oct 2013 22:44:32 -0400 [thread overview]
Message-ID: <20131021024630.653228933@goodmis.org> (raw)
In-Reply-To: 20131021024429.189874455@goodmis.org
[-- Attachment #1: 0003-ftrace-Get-rid-of-ftrace_graph_filter_enabled.patch --]
[-- Type: text/plain, Size: 2306 bytes --]
From: Namhyung Kim <namhyung.kim@lge.com>
The ftrace_graph_filter_enabled means that user sets function filter
and it always has same meaning of ftrace_graph_count > 0.
Link: http://lkml.kernel.org/r/1381739066-7531-2-git-send-email-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/trace/ftrace.c | 6 +-----
kernel/trace/trace.h | 3 +--
2 files changed, 2 insertions(+), 7 deletions(-)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 03cf44a..a77e4a0 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3776,7 +3776,6 @@ static const struct file_operations ftrace_notrace_fops = {
static DEFINE_MUTEX(graph_lock);
int ftrace_graph_count;
-int ftrace_graph_filter_enabled;
unsigned long ftrace_graph_funcs[FTRACE_GRAPH_MAX_FUNCS] __read_mostly;
static void *
@@ -3799,7 +3798,7 @@ static void *g_start(struct seq_file *m, loff_t *pos)
mutex_lock(&graph_lock);
/* Nothing, tell g_show to print all functions are enabled */
- if (!ftrace_graph_filter_enabled && !*pos)
+ if (!ftrace_graph_count && !*pos)
return (void *)1;
return __g_next(m, pos);
@@ -3845,7 +3844,6 @@ ftrace_graph_open(struct inode *inode, struct file *file)
mutex_lock(&graph_lock);
if ((file->f_mode & FMODE_WRITE) &&
(file->f_flags & O_TRUNC)) {
- ftrace_graph_filter_enabled = 0;
ftrace_graph_count = 0;
memset(ftrace_graph_funcs, 0, sizeof(ftrace_graph_funcs));
}
@@ -3925,8 +3923,6 @@ out:
if (fail)
return -EINVAL;
- ftrace_graph_filter_enabled = !!(*idx);
-
return 0;
}
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 10c86fb..40211ce 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -730,7 +730,6 @@ extern void __trace_graph_return(struct trace_array *tr,
#ifdef CONFIG_DYNAMIC_FTRACE
/* TODO: make this variable */
#define FTRACE_GRAPH_MAX_FUNCS 32
-extern int ftrace_graph_filter_enabled;
extern int ftrace_graph_count;
extern unsigned long ftrace_graph_funcs[FTRACE_GRAPH_MAX_FUNCS];
@@ -738,7 +737,7 @@ static inline int ftrace_graph_addr(unsigned long addr)
{
int i;
- if (!ftrace_graph_filter_enabled)
+ if (!ftrace_graph_count)
return 1;
for (i = 0; i < ftrace_graph_count; i++) {
--
1.8.4.rc3
next prev parent reply other threads:[~2013-10-21 2:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-21 2:44 [for-next][PATCH 0/6] tracing: Various updates Steven Rostedt
2013-10-21 2:44 ` [for-next][PATCH 1/6] tracing: Show more exact help information about snapshot Steven Rostedt
2013-10-21 2:44 ` [for-next][PATCH 2/6] tracing: Fix potential out-of-bounds in trace_get_user() Steven Rostedt
2013-10-21 2:44 ` Steven Rostedt [this message]
2013-10-21 2:44 ` [for-next][PATCH 4/6] ftrace: Introduce struct ftrace_graph_data Steven Rostedt
2013-10-21 2:44 ` [for-next][PATCH 5/6] ftrace: Narrow down the protected area of graph_lock Steven Rostedt
2013-10-21 2:44 ` [for-next][PATCH 6/6] ftrace: Add set_graph_notrace filter Steven Rostedt
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