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ftrace: make work with new ring buffer

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This patch ports ftrace over to the new ring buffer.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Steven Rostedt
2008-09-29 23:02:41 -04:00
committed by Ingo Molnar
parent ed56829cb3
commit 3928a8a2d9
11 changed files with 292 additions and 802 deletions
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22
kernel/trace/trace.h
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@@ -5,6 +5,7 @@
#include <asm/atomic.h>
#include <linux/sched.h>
#include <linux/clocksource.h>
#include <linux/ring_buffer.h>
#include <linux/mmiotrace.h>
#include <linux/ftrace.h>
@@ -102,7 +103,6 @@ struct trace_field {
char flags;
char preempt_count;
int pid;
cycle_t t;
union {
struct ftrace_entry fn;
struct ctx_switch_entry ctx;
@@ -139,16 +139,9 @@ struct trace_entry {
* the trace, etc.)
*/
struct trace_array_cpu {
struct list_head trace_pages;
atomic_t disabled;
raw_spinlock_t lock;
struct lock_class_key lock_key;
/* these fields get copied into max-trace: */
unsigned trace_head_idx;
unsigned trace_tail_idx;
void *trace_head; /* producer */
void *trace_tail; /* consumer */
unsigned long trace_idx;
unsigned long overrun;
unsigned long saved_latency;
@@ -172,6 +165,7 @@ struct trace_iterator;
* They have on/off state as well:
*/
struct trace_array {
struct ring_buffer *buffer;
unsigned long entries;
long ctrl;
int cpu;
@@ -219,27 +213,21 @@ struct trace_iterator {
struct trace_array *tr;
struct tracer *trace;
void *private;
long last_overrun[NR_CPUS];
long overrun[NR_CPUS];
struct ring_buffer_iter *buffer_iter[NR_CPUS];
/* The below is zeroed out in pipe_read */
struct trace_seq seq;
struct trace_entry *ent;
int cpu;
struct trace_entry *prev_ent;
int prev_cpu;
u64 ts;
unsigned long iter_flags;
loff_t pos;
unsigned long next_idx[NR_CPUS];
struct list_head *next_page[NR_CPUS];
unsigned next_page_idx[NR_CPUS];
long idx;
};
void trace_wake_up(void);
void tracing_reset(struct trace_array_cpu *data);
void tracing_reset(struct trace_array *tr, int cpu);
int tracing_open_generic(struct inode *inode, struct file *filp);
struct dentry *tracing_init_dentry(void);
void init_tracer_sysprof_debugfs(struct dentry *d_tracer);