diff options
| author |   Lai Jiangshan <laijs@cn.fujitsu.com> | 2009-03-13 17:47:23 +0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-03-13 11:35:31 +0100 |
| commit | 850a80cfaa5aec3e626eb3736eff890a80e4fa77 (patch) | |
| tree | 777195c11a34eee8a63a5d2ccc3cf0ccd2855491 /kernel/trace/ftrace.c | |
| parent | ftrace: don't try to __ftrace_replace_code on !FTRACE_FL_CONVERTED rec (diff) | |
| download | linux-dev-850a80cfaa5aec3e626eb3736eff890a80e4fa77.tar.xz linux-dev-850a80cfaa5aec3e626eb3736eff890a80e4fa77.zip | |
ftrace: use seq_read
Impact: cleanup
VFS layer has tested the file mode, we do not need test it.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Steven Rostedt <srostedt@redhat.com>
LKML-Reference: <49BA2BAB.6010608@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/trace/ftrace.c')
| -rw-r--r-- | kernel/trace/ftrace.c | 26 |
1 files changed, 3 insertions, 23 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 08f4a624e31f..bf78a4c75c67 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1120,16 +1120,6 @@ ftrace_notrace_open(struct inode *inode, struct file *file) return ftrace_regex_open(inode, file, 0); } -static ssize_t -ftrace_regex_read(struct file *file, char __user *ubuf, - size_t cnt, loff_t *ppos) -{ - if (file->f_mode & FMODE_READ) - return seq_read(file, ubuf, cnt, ppos); - else - return -EPERM; -} - static loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int origin) { @@ -1882,7 +1872,7 @@ static const struct file_operations ftrace_failures_fops = { static const struct file_operations ftrace_filter_fops = { .open = ftrace_filter_open, - .read = ftrace_regex_read, + .read = seq_read, .write = ftrace_filter_write, .llseek = ftrace_regex_lseek, .release = ftrace_filter_release, @@ -1890,7 +1880,7 @@ static const struct file_operations ftrace_filter_fops = { static const struct file_operations ftrace_notrace_fops = { .open = ftrace_notrace_open, - .read = ftrace_regex_read, + .read = seq_read, .write = ftrace_notrace_write, .llseek = ftrace_regex_lseek, .release = ftrace_notrace_release, @@ -1992,16 +1982,6 @@ ftrace_graph_open(struct inode *inode, struct file *file) return ret; } -static ssize_t -ftrace_graph_read(struct file *file, char __user *ubuf, - size_t cnt, loff_t *ppos) -{ - if (file->f_mode & FMODE_READ) - return seq_read(file, ubuf, cnt, ppos); - else - return -EPERM; -} - static int ftrace_set_func(unsigned long *array, int *idx, char *buffer) { @@ -2132,7 +2112,7 @@ ftrace_graph_write(struct file *file, const char __user *ubuf, static const struct file_operations ftrace_graph_fops = { .open = ftrace_graph_open, - .read = ftrace_graph_read, + .read = seq_read, .write = ftrace_graph_write, }; #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ |