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authorArnd Bergmann <arnd@arndb.de>2010-07-07 23:40:11 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2010-07-20 14:31:24 +0200
commitb444786f1a797a7f84e2561346a670649f9c7b3c (patch)
tree42260d0930addbe623d952fff75e0fba7f63d6c6 /kernel/trace
parenteb7beb5c09af75494234ea6acd09d0a647cf7338 (diff)
tracing: Use generic_file_llseek for debugfs
The default for llseek will change to no_llseek, so the tracing debugfs files need to add explicit .llseek assignments. Since we're dealing with regular files from a VFS perspective, use generic_file_llseek. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: John Kacur <jkacur@redhat.com> Cc: Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <1278538820-1392-10-git-send-email-arnd@arndb.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index d9a4aa02c384..c1752dac613e 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2338,6 +2338,7 @@ static const struct file_operations show_traces_fops = {
.open = show_traces_open,
.read = seq_read,
.release = seq_release,
+ .llseek = seq_lseek,
};
/*
@@ -2431,6 +2432,7 @@ static const struct file_operations tracing_cpumask_fops = {
.open = tracing_open_generic,
.read = tracing_cpumask_read,
.write = tracing_cpumask_write,
+ .llseek = generic_file_llseek,
};
static int tracing_trace_options_show(struct seq_file *m, void *v)
@@ -2597,6 +2599,7 @@ tracing_readme_read(struct file *filp, char __user *ubuf,
static const struct file_operations tracing_readme_fops = {
.open = tracing_open_generic,
.read = tracing_readme_read,
+ .llseek = generic_file_llseek,
};
static ssize_t
@@ -2647,6 +2650,7 @@ tracing_saved_cmdlines_read(struct file *file, char __user *ubuf,
static const struct file_operations tracing_saved_cmdlines_fops = {
.open = tracing_open_generic,
.read = tracing_saved_cmdlines_read,
+ .llseek = generic_file_llseek,
};
static ssize_t
@@ -2976,6 +2980,7 @@ static int tracing_open_pipe(struct inode *inode, struct file *filp)
if (iter->trace->pipe_open)
iter->trace->pipe_open(iter);
+ nonseekable_open(inode, filp);
out:
mutex_unlock(&trace_types_lock);
return ret;
@@ -3534,18 +3539,21 @@ static const struct file_operations tracing_max_lat_fops = {
.open = tracing_open_generic,
.read = tracing_max_lat_read,
.write = tracing_max_lat_write,
+ .llseek = generic_file_llseek,
};
static const struct file_operations tracing_ctrl_fops = {
.open = tracing_open_generic,
.read = tracing_ctrl_read,
.write = tracing_ctrl_write,
+ .llseek = generic_file_llseek,
};
static const struct file_operations set_tracer_fops = {
.open = tracing_open_generic,
.read = tracing_set_trace_read,
.write = tracing_set_trace_write,
+ .llseek = generic_file_llseek,
};
static const struct file_operations tracing_pipe_fops = {
@@ -3554,17 +3562,20 @@ static const struct file_operations tracing_pipe_fops = {
.read = tracing_read_pipe,
.splice_read = tracing_splice_read_pipe,
.release = tracing_release_pipe,
+ .llseek = no_llseek,
};
static const struct file_operations tracing_entries_fops = {
.open = tracing_open_generic,
.read = tracing_entries_read,
.write = tracing_entries_write,
+ .llseek = generic_file_llseek,
};
static const struct file_operations tracing_mark_fops = {
.open = tracing_open_generic,
.write = tracing_mark_write,
+ .llseek = generic_file_llseek,
};
static const struct file_operations trace_clock_fops = {
@@ -3870,6 +3881,7 @@ tracing_stats_read(struct file *filp, char __user *ubuf,
static const struct file_operations tracing_stats_fops = {
.open = tracing_open_generic,
.read = tracing_stats_read,
+ .llseek = generic_file_llseek,
};
#ifdef CONFIG_DYNAMIC_FTRACE
@@ -3906,6 +3918,7 @@ tracing_read_dyn_info(struct file *filp, char __user *ubuf,
static const struct file_operations tracing_dyn_info_fops = {
.open = tracing_open_generic,
.read = tracing_read_dyn_info,
+ .llseek = generic_file_llseek,
};
#endif
@@ -4059,6 +4072,7 @@ static const struct file_operations trace_options_fops = {
.open = tracing_open_generic,
.read = trace_options_read,
.write = trace_options_write,
+ .llseek = generic_file_llseek,
};
static ssize_t
@@ -4110,6 +4124,7 @@ static const struct file_operations trace_options_core_fops = {
.open = tracing_open_generic,
.read = trace_options_core_read,
.write = trace_options_core_write,
+ .llseek = generic_file_llseek,
};
struct dentry *trace_create_file(const char *name,