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Merge branch 'tip/tracing/ftrace' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace

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This commit is contained in:
Ingo Molnar
2009-03-20 10:15:13 +01:00
parent 22de89b371 5087f8d2a2
commit 44fc6ee923
9 changed files with 245 additions and 181 deletions
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85
kernel/trace/trace.c
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@@ -1201,7 +1201,7 @@ void trace_graph_return(struct ftrace_graph_ret *trace)
* trace_vbprintk - write binary msg to tracing buffer
*
*/
int trace_vbprintk(unsigned long ip, int depth, const char *fmt, va_list args)
int trace_vbprintk(unsigned long ip, const char *fmt, va_list args)
{
static raw_spinlock_t trace_buf_lock =
(raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED;
@@ -1243,7 +1243,6 @@ int trace_vbprintk(unsigned long ip, int depth, const char *fmt, va_list args)
goto out_unlock;
entry = ring_buffer_event_data(event);
entry->ip = ip;
entry->depth = depth;
entry->fmt = fmt;
memcpy(entry->buf, trace_buf, sizeof(u32) * len);
@@ -1261,7 +1260,7 @@ out:
}
EXPORT_SYMBOL_GPL(trace_vbprintk);
int trace_vprintk(unsigned long ip, int depth, const char *fmt, va_list args)
int trace_vprintk(unsigned long ip, const char *fmt, va_list args)
{
static raw_spinlock_t trace_buf_lock = __RAW_SPIN_LOCK_UNLOCKED;
static char trace_buf[TRACE_BUF_SIZE];
@@ -1298,7 +1297,6 @@ int trace_vprintk(unsigned long ip, int depth, const char *fmt, va_list args)
goto out_unlock;
entry = ring_buffer_event_data(event);
entry->ip = ip;
entry->depth = depth;
memcpy(&entry->buf, trace_buf, len);
entry->buf[len] = 0;
@@ -1701,38 +1699,6 @@ static enum print_line_t print_hex_fmt(struct trace_iterator *iter)
return TRACE_TYPE_HANDLED;
}
static enum print_line_t print_bprintk_msg_only(struct trace_iterator *iter)
{
struct trace_seq *s = &iter->seq;
struct trace_entry *entry = iter->ent;
struct bprint_entry *field;
int ret;
trace_assign_type(field, entry);
ret = trace_seq_bprintf(s, field->fmt, field->buf);
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
return TRACE_TYPE_HANDLED;
}
static enum print_line_t print_printk_msg_only(struct trace_iterator *iter)
{
struct trace_seq *s = &iter->seq;
struct trace_entry *entry = iter->ent;
struct print_entry *field;
int ret;
trace_assign_type(field, entry);
ret = trace_seq_printf(s, "%s", field->buf);
if (!ret)
return TRACE_TYPE_PARTIAL_LINE;
return TRACE_TYPE_HANDLED;
}
static enum print_line_t print_bin_fmt(struct trace_iterator *iter)
{
struct trace_seq *s = &iter->seq;
@@ -1794,12 +1760,12 @@ static enum print_line_t print_trace_line(struct trace_iterator *iter)
if (iter->ent->type == TRACE_BPRINT &&
trace_flags & TRACE_ITER_PRINTK &&
trace_flags & TRACE_ITER_PRINTK_MSGONLY)
return print_bprintk_msg_only(iter);
return trace_print_bprintk_msg_only(iter);
if (iter->ent->type == TRACE_PRINT &&
trace_flags & TRACE_ITER_PRINTK &&
trace_flags & TRACE_ITER_PRINTK_MSGONLY)
return print_printk_msg_only(iter);
return trace_print_printk_msg_only(iter);
if (trace_flags & TRACE_ITER_BIN)
return print_bin_fmt(iter);
@@ -1948,9 +1914,14 @@ int tracing_open_generic(struct inode *inode, struct file *filp)
static int tracing_release(struct inode *inode, struct file *file)
{
struct seq_file *m = (struct seq_file *)file->private_data;
struct trace_iterator *iter = m->private;
struct trace_iterator *iter;
int cpu;
if (!(file->f_mode & FMODE_READ))
return 0;
iter = m->private;
mutex_lock(&trace_types_lock);
for_each_tracing_cpu(cpu) {
if (iter->buffer_iter[cpu])
@@ -1976,12 +1947,24 @@ static int tracing_open(struct inode *inode, struct file *file)
struct trace_iterator *iter;
int ret = 0;
iter = __tracing_open(inode, file);
if (IS_ERR(iter))
ret = PTR_ERR(iter);
else if (trace_flags & TRACE_ITER_LATENCY_FMT)
iter->iter_flags |= TRACE_FILE_LAT_FMT;
/* If this file was open for write, then erase contents */
if ((file->f_mode & FMODE_WRITE) &&
!(file->f_flags & O_APPEND)) {
long cpu = (long) inode->i_private;
if (cpu == TRACE_PIPE_ALL_CPU)
tracing_reset_online_cpus(&global_trace);
else
tracing_reset(&global_trace, cpu);
}
if (file->f_mode & FMODE_READ) {
iter = __tracing_open(inode, file);
if (IS_ERR(iter))
ret = PTR_ERR(iter);
else if (trace_flags & TRACE_ITER_LATENCY_FMT)
iter->iter_flags |= TRACE_FILE_LAT_FMT;
}
return ret;
}
@@ -2056,9 +2039,17 @@ static int show_traces_open(struct inode *inode, struct file *file)
return ret;
}
static ssize_t
tracing_write_stub(struct file *filp, const char __user *ubuf,
size_t count, loff_t *ppos)
{
return count;
}
static const struct file_operations tracing_fops = {
.open = tracing_open,
.read = seq_read,
.write = tracing_write_stub,
.llseek = seq_lseek,
.release = tracing_release,
};
@@ -3154,7 +3145,7 @@ static int mark_printk(const char *fmt, ...)
int ret;
va_list args;
va_start(args, fmt);
ret = trace_vprintk(0, -1, fmt, args);
ret = trace_vprintk(0, fmt, args);
va_end(args);
return ret;
}
@@ -3583,7 +3574,7 @@ static void tracing_init_debugfs_percpu(long cpu)
pr_warning("Could not create debugfs 'trace_pipe' entry\n");
/* per cpu trace */
entry = debugfs_create_file("trace", 0444, d_cpu,
entry = debugfs_create_file("trace", 0644, d_cpu,
(void *) cpu, &tracing_fops);
if (!entry)
pr_warning("Could not create debugfs 'trace' entry\n");
@@ -3897,7 +3888,7 @@ static __init int tracer_init_debugfs(void)
if (!entry)
pr_warning("Could not create debugfs 'tracing_cpumask' entry\n");
entry = debugfs_create_file("trace", 0444, d_tracer,
entry = debugfs_create_file("trace", 0644, d_tracer,
(void *) TRACE_PIPE_ALL_CPU, &tracing_fops);
if (!entry)
pr_warning("Could not create debugfs 'trace' entry\n");