X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=block%2Fblktrace.c;h=20fa034ea4a219d2906cdb27680c039beffa9f85;hp=74e02c04b2dab6eb9567a49f9e589cfe69fb2e9e;hb=5b0bf5e25efe;hpb=2d941e99dfa2f58f4cf294943274a4f8e264aab7

diff --git a/block/blktrace.c b/block/blktrace.c
index 74e02c04b2da..20fa034ea4a2 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -41,7 +41,7 @@ static void trace_note(struct blk_trace *bt, pid_t pid, int action,
 		const int cpu = smp_processor_id();
 
 		t->magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION;
-		t->time = sched_clock() - per_cpu(blk_trace_cpu_offset, cpu);
+		t->time = cpu_clock(cpu) - per_cpu(blk_trace_cpu_offset, cpu);
 		t->device = bt->dev;
 		t->action = action;
 		t->pid = pid;
@@ -159,7 +159,7 @@ void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
 
 		t->magic = BLK_IO_TRACE_MAGIC | BLK_IO_TRACE_VERSION;
 		t->sequence = ++(*sequence);
-		t->time = sched_clock() - per_cpu(blk_trace_cpu_offset, cpu);
+		t->time = cpu_clock(cpu) - per_cpu(blk_trace_cpu_offset, cpu);
 		t->sector = sector;
 		t->bytes = bytes;
 		t->action = what;
@@ -231,7 +231,7 @@ static void blk_trace_cleanup(struct blk_trace *bt)
 	kfree(bt);
 }
 
-static int blk_trace_remove(request_queue_t *q)
+static int blk_trace_remove(struct request_queue *q)
 {
 	struct blk_trace *bt;
 
@@ -264,7 +264,7 @@ static ssize_t blk_dropped_read(struct file *filp, char __user *buffer,
 	return simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
 }
 
-static struct file_operations blk_dropped_fops = {
+static const struct file_operations blk_dropped_fops = {
 	.owner =	THIS_MODULE,
 	.open =		blk_dropped_open,
 	.read =		blk_dropped_read,
@@ -312,7 +312,7 @@ static struct rchan_callbacks blk_relay_callbacks = {
 /*
  * Setup everything required to start tracing
  */
-static int blk_trace_setup(request_queue_t *q, struct block_device *bdev,
+static int blk_trace_setup(struct request_queue *q, struct block_device *bdev,
 			   char __user *arg)
 {
 	struct blk_user_trace_setup buts;
@@ -363,10 +363,9 @@ static int blk_trace_setup(request_queue_t *q, struct block_device *bdev,
 	if (!bt->dropped_file)
 		goto err;
 
-	bt->rchan = relay_open("trace", dir, buts.buf_size, buts.buf_nr, &blk_relay_callbacks);
+	bt->rchan = relay_open("trace", dir, buts.buf_size, buts.buf_nr, &blk_relay_callbacks, bt);
 	if (!bt->rchan)
 		goto err;
-	bt->rchan->private_data = bt;
 
 	bt->act_mask = buts.act_mask;
 	if (!bt->act_mask)
@@ -394,8 +393,7 @@ err:
 	if (bt) {
 		if (bt->dropped_file)
 			debugfs_remove(bt->dropped_file);
-		if (bt->sequence)
-			free_percpu(bt->sequence);
+		free_percpu(bt->sequence);
 		if (bt->rchan)
 			relay_close(bt->rchan);
 		kfree(bt);
@@ -403,7 +401,7 @@ err:
 	return ret;
 }
 
-static int blk_trace_startstop(request_queue_t *q, int start)
+static int blk_trace_startstop(struct request_queue *q, int start)
 {
 	struct blk_trace *bt;
 	int ret;
@@ -446,7 +444,7 @@ static int blk_trace_startstop(request_queue_t *q, int start)
  **/
 int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg)
 {
-	request_queue_t *q;
+	struct request_queue *q;
 	int ret, start = 0;
 
 	q = bdev_get_queue(bdev);
@@ -481,7 +479,7 @@ int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg)
  * @q:    the request queue associated with the device
  *
  **/
-void blk_trace_shutdown(request_queue_t *q)
+void blk_trace_shutdown(struct request_queue *q)
 {
 	if (q->blk_trace) {
 		blk_trace_startstop(q, 0);
@@ -490,17 +488,17 @@ void blk_trace_shutdown(request_queue_t *q)
 }
 
 /*
- * Average offset over two calls to sched_clock() with a gettimeofday()
+ * Average offset over two calls to cpu_clock() with a gettimeofday()
  * in the middle
  */
-static void blk_check_time(unsigned long long *t)
+static void blk_check_time(unsigned long long *t, int this_cpu)
 {
 	unsigned long long a, b;
 	struct timeval tv;
 
-	a = sched_clock();
+	a = cpu_clock(this_cpu);
 	do_gettimeofday(&tv);
-	b = sched_clock();
+	b = cpu_clock(this_cpu);
 
 	*t = tv.tv_sec * 1000000000 + tv.tv_usec * 1000;
 	*t -= (a + b) / 2;
@@ -512,16 +510,16 @@ static void blk_check_time(unsigned long long *t)
 static void blk_trace_check_cpu_time(void *data)
 {
 	unsigned long long *t;
-	int cpu = get_cpu();
+	int this_cpu = get_cpu();
 
-	t = &per_cpu(blk_trace_cpu_offset, cpu);
+	t = &per_cpu(blk_trace_cpu_offset, this_cpu);
 
 	/*
 	 * Just call it twice, hopefully the second call will be cache hot
 	 * and a little more precise
 	 */
-	blk_check_time(t);
-	blk_check_time(t);
+	blk_check_time(t, this_cpu);
+	blk_check_time(t, this_cpu);
 
 	put_cpu();
 }