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Merge branch 'tracing/urgent' into tracing/core

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Merge reason: Pick up latest fixes and update to latest upstream.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar
2009-10-01 11:20:33 +02:00
parent 925936ebf3 33974093c0
commit 0aa73ba1c4
4522 changed files with 350207 additions and 129152 deletions
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60
kernel/trace/ftrace.c
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@@ -225,7 +225,11 @@ static void ftrace_update_pid_func(void)
if (ftrace_trace_function == ftrace_stub)
return;
#ifdef CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST
func = ftrace_trace_function;
#else
func = __ftrace_trace_function;
#endif
if (ftrace_pid_trace) {
set_ftrace_pid_function(func);
@@ -1520,7 +1524,7 @@ static int t_show(struct seq_file *m, void *v)
return 0;
}
static struct seq_operations show_ftrace_seq_ops = {
static const struct seq_operations show_ftrace_seq_ops = {
.start = t_start,
.next = t_next,
.stop = t_stop,
@@ -1621,8 +1625,10 @@ ftrace_regex_open(struct inode *inode, struct file *file, int enable)
if (!ret) {
struct seq_file *m = file->private_data;
m->private = iter;
} else
} else {
trace_parser_put(&iter->parser);
kfree(iter);
}
} else
file->private_data = iter;
mutex_unlock(&ftrace_regex_lock);
@@ -2148,7 +2154,7 @@ ftrace_regex_write(struct file *file, const char __user *ubuf,
struct trace_parser *parser;
ssize_t ret, read;
if (!cnt || cnt < 0)
if (!cnt)
return 0;
mutex_lock(&ftrace_regex_lock);
@@ -2162,7 +2168,7 @@ ftrace_regex_write(struct file *file, const char __user *ubuf,
parser = &iter->parser;
read = trace_get_user(parser, ubuf, cnt, ppos);
if (trace_parser_loaded(parser) &&
if (read >= 0 && trace_parser_loaded(parser) &&
!trace_parser_cont(parser)) {
ret = ftrace_process_regex(parser->buffer,
parser->idx, enable);
@@ -2360,11 +2366,9 @@ unsigned long ftrace_graph_funcs[FTRACE_GRAPH_MAX_FUNCS] __read_mostly;
static void *
__g_next(struct seq_file *m, loff_t *pos)
{
unsigned long *array = m->private;
if (*pos >= ftrace_graph_count)
return NULL;
return &array[*pos];
return &ftrace_graph_funcs[*pos];
}
static void *
@@ -2407,7 +2411,7 @@ static int g_show(struct seq_file *m, void *v)
return 0;
}
static struct seq_operations ftrace_graph_seq_ops = {
static const struct seq_operations ftrace_graph_seq_ops = {
.start = g_start,
.next = g_next,
.stop = g_stop,
@@ -2428,17 +2432,11 @@ ftrace_graph_open(struct inode *inode, struct file *file)
ftrace_graph_count = 0;
memset(ftrace_graph_funcs, 0, sizeof(ftrace_graph_funcs));
}
if (file->f_mode & FMODE_READ) {
ret = seq_open(file, &ftrace_graph_seq_ops);
if (!ret) {
struct seq_file *m = file->private_data;
m->private = ftrace_graph_funcs;
}
} else
file->private_data = ftrace_graph_funcs;
mutex_unlock(&graph_lock);
if (file->f_mode & FMODE_READ)
ret = seq_open(file, &ftrace_graph_seq_ops);
return ret;
}
@@ -2506,9 +2504,7 @@ ftrace_graph_write(struct file *file, const char __user *ubuf,
size_t cnt, loff_t *ppos)
{
struct trace_parser parser;
unsigned long *array;
size_t read = 0;
ssize_t ret;
ssize_t read, ret;
if (!cnt || cnt < 0)
return 0;
@@ -2517,35 +2513,31 @@ ftrace_graph_write(struct file *file, const char __user *ubuf,
if (ftrace_graph_count >= FTRACE_GRAPH_MAX_FUNCS) {
ret = -EBUSY;
goto out;
goto out_unlock;
}
if (file->f_mode & FMODE_READ) {
struct seq_file *m = file->private_data;
array = m->private;
} else
array = file->private_data;
if (trace_parser_get_init(&parser, FTRACE_BUFF_MAX)) {
ret = -ENOMEM;
goto out;
goto out_unlock;
}
read = trace_get_user(&parser, ubuf, cnt, ppos);
if (trace_parser_loaded((&parser))) {
if (read >= 0 && trace_parser_loaded((&parser))) {
parser.buffer[parser.idx] = 0;
/* we allow only one expression at a time */
ret = ftrace_set_func(array, &ftrace_graph_count,
ret = ftrace_set_func(ftrace_graph_funcs, &ftrace_graph_count,
parser.buffer);
if (ret)
goto out;
goto out_free;
}
ret = read;
out:
out_free:
trace_parser_put(&parser);
out_unlock:
mutex_unlock(&graph_lock);
return ret;
@@ -2976,7 +2968,7 @@ int unregister_ftrace_function(struct ftrace_ops *ops)
int
ftrace_enable_sysctl(struct ctl_table *table, int write,
struct file *file, void __user *buffer, size_t *lenp,
void __user *buffer, size_t *lenp,
loff_t *ppos)
{
int ret;
@@ -2986,7 +2978,7 @@ ftrace_enable_sysctl(struct ctl_table *table, int write,
mutex_lock(&ftrace_lock);
ret = proc_dointvec(table, write, file, buffer, lenp, ppos);
ret = proc_dointvec(table, write, buffer, lenp, ppos);
if (ret || !write || (last_ftrace_enabled == !!ftrace_enabled))
goto out;