---

yaml --- r: 72799 b: refs/heads/master c: 82798a1 h: refs/heads/master i: 72797: 122ec50 72795: 7e0d049 72791: e01c5b5 72783: 4a43a46 72767: 28e14e1 v: v3
git-mirror · Oct 29, 2007 · d6c20e3 · d6c20e3
1 parent d427db8
commit d6c20e3
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Showing 117 changed files with 3,161 additions and 1,081 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1a3b7920fe55247d39c3e1ac1e9b8aca607d0188
+refs/heads/master: 82798a17ad40df827d465329a20ace80497f9b32
diff --git a/trunk/Documentation/scsi/link_power_management_policy.txt b/trunk/Documentation/scsi/link_power_management_policy.txt
@@ -0,0 +1,19 @@
+This parameter allows the user to set the link (interface) power management.
+There are 3 possible options:
+
+Value			Effect
+----------------------------------------------------------------------------
+min_power		Tell the controller to try to make the link use the
+			least possible power when possible.  This may
+			sacrifice some performance due to increased latency
+			when coming out of lower power states.
+
+max_performance		Generally, this means no power management.  Tell
+			the controller to have performance be a priority
+			over power management.
+
+medium_power		Tell the controller to enter a lower power state
+			when possible, but do not enter the lowest power
+			state, thus improving latency over min_power setting.
+
+
diff --git a/trunk/arch/um/Kconfig.i386 b/trunk/arch/um/Kconfig.i386
@@ -1,6 +1,6 @@
 menu "Host processor type and features"
 
-source "arch/i386/Kconfig.cpu"
+source "arch/x86/Kconfig.cpu"
 
 endmenu
 

diff --git a/trunk/arch/um/Makefile-i386 b/trunk/arch/um/Makefile-i386
@@ -9,6 +9,7 @@ ELF_ARCH		:= $(SUBARCH)
 ELF_FORMAT 		:= elf32-$(SUBARCH)
 OBJCOPYFLAGS  		:= -O binary -R .note -R .comment -S
 HEADER_ARCH		:= x86
+CHECKFLAGS	+= -D__i386__
 
 ifeq ("$(origin SUBARCH)", "command line")
 ifneq ("$(shell uname -m | sed -e s/i.86/i386/)", "$(SUBARCH)")
@@ -26,10 +27,8 @@ AFLAGS			+= -DCONFIG_X86_32
 CONFIG_X86_32		:= y
 export CONFIG_X86_32
 
-ARCH_KERNEL_DEFINES += -U__$(SUBARCH)__ -U$(SUBARCH)
-
 # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
-include $(srctree)/arch/i386/Makefile.cpu
+include $(srctree)/arch/x86/Makefile_32.cpu
 
 # prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
 cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)

diff --git a/trunk/arch/um/Makefile-x86_64 b/trunk/arch/um/Makefile-x86_64
@@ -6,12 +6,9 @@ START := 0x60000000
 
 _extra_flags_ = -fno-builtin -m64
 
-#We #undef __x86_64__ for kernelspace, not for userspace where
-#it's needed for headers to work!
-ARCH_KERNEL_DEFINES = -U__$(SUBARCH)__
 KBUILD_CFLAGS += $(_extra_flags_)
 
-CHECKFLAGS  += -m64
+CHECKFLAGS  += -m64 -D__x86_64__
 KBUILD_AFLAGS += -m64
 LDFLAGS += -m elf_x86_64
 KBUILD_CPPFLAGS += -m64

diff --git a/trunk/arch/um/kernel/mem.c b/trunk/arch/um/kernel/mem.c
@@ -165,7 +165,7 @@ static void __init kmap_init(void)
 	kmap_prot = PAGE_KERNEL;
 }
 
-static void init_highmem(void)
+static void __init init_highmem(void)
 {
 	pgd_t *pgd;
 	pud_t *pud;

diff --git a/trunk/arch/um/sys-i386/ptrace.c b/trunk/arch/um/sys-i386/ptrace.c
@@ -155,7 +155,7 @@ int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 	if (err)
 		return err;
 
-	n = copy_to_user((void *) buf, fpregs, sizeof(fpregs));
+	n = copy_to_user(buf, fpregs, sizeof(fpregs));
 	if(n > 0)
 		return -EFAULT;
 
@@ -168,7 +168,7 @@ int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 	long fpregs[HOST_FP_SIZE];
 
 	BUG_ON(sizeof(*buf) != sizeof(fpregs));
-	n = copy_from_user(fpregs, (void *) buf, sizeof(fpregs));
+	n = copy_from_user(fpregs, buf, sizeof(fpregs));
 	if (n > 0)
 		return -EFAULT;
 
@@ -185,7 +185,7 @@ int get_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 	if (err)
 		return err;
 
-	n = copy_to_user((void *) buf, fpregs, sizeof(fpregs));
+	n = copy_to_user(buf, fpregs, sizeof(fpregs));
 	if(n > 0)
 		return -EFAULT;
 
@@ -198,7 +198,7 @@ int set_fpxregs(struct user_fxsr_struct __user *buf, struct task_struct *child)
 	long fpregs[HOST_XFP_SIZE];
 
 	BUG_ON(sizeof(*buf) != sizeof(fpregs));
-	n = copy_from_user(fpregs, (void *) buf, sizeof(fpregs));
+	n = copy_from_user(fpregs, buf, sizeof(fpregs));
 	if (n > 0)
 		return -EFAULT;
 

diff --git a/trunk/arch/um/sys-x86_64/ptrace.c b/trunk/arch/um/sys-x86_64/ptrace.c
@@ -154,7 +154,7 @@ int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 	if (err)
 		return err;
 
-	n = copy_to_user((void *) buf, fpregs, sizeof(fpregs));
+	n = copy_to_user(buf, fpregs, sizeof(fpregs));
 	if(n > 0)
 		return -EFAULT;
 
@@ -167,7 +167,7 @@ int set_fpregs(struct user_i387_struct __user *buf, struct task_struct *child)
 	long fpregs[HOST_FP_SIZE];
 
 	BUG_ON(sizeof(*buf) != sizeof(fpregs));
-	n = copy_from_user(fpregs, (void *) buf, sizeof(fpregs));
+	n = copy_from_user(fpregs, buf, sizeof(fpregs));
 	if (n > 0)
 		return -EFAULT;
 

diff --git a/trunk/arch/x86/kernel/pci-gart_64.c b/trunk/arch/x86/kernel/pci-gart_64.c
@@ -435,7 +435,7 @@ static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents,
 
 error:
 	flush_gart();
-	gart_unmap_sg(dev, sg, nents, dir);
+	gart_unmap_sg(dev, sg, out, dir);
 	/* When it was forced or merged try again in a dumb way */
 	if (force_iommu || iommu_merge) {
 		out = dma_map_sg_nonforce(dev, sg, nents, dir);

diff --git a/trunk/arch/x86/mm/init_64.c b/trunk/arch/x86/mm/init_64.c
@@ -728,12 +728,6 @@ int in_gate_area_no_task(unsigned long addr)
 	return (addr >= VSYSCALL_START) && (addr < VSYSCALL_END);
 }
 
-void * __init alloc_bootmem_high_node(pg_data_t *pgdat, unsigned long size)
-{
-	return __alloc_bootmem_core(pgdat->bdata, size,
-			SMP_CACHE_BYTES, (4UL*1024*1024*1024), 0);
-}
-
 const char *arch_vma_name(struct vm_area_struct *vma)
 {
 	if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso)

diff --git a/trunk/block/cfq-iosched.c b/trunk/block/cfq-iosched.c
@@ -1443,8 +1443,11 @@ cfq_get_queue(struct cfq_data *cfqd, int is_sync, struct task_struct *tsk,
 		cfqq = *async_cfqq;
 	}
 
-	if (!cfqq)
+	if (!cfqq) {
 		cfqq = cfq_find_alloc_queue(cfqd, is_sync, tsk, gfp_mask);
+		if (!cfqq)
+			return NULL;
+	}
 
 	/*
 	 * pin the queue now that it's allocated, scheduler exit will prune it
@@ -2053,7 +2056,7 @@ static void cfq_shutdown_timer_wq(struct cfq_data *cfqd)
 {
 	del_timer_sync(&cfqd->idle_slice_timer);
 	del_timer_sync(&cfqd->idle_class_timer);
-	blk_sync_queue(cfqd->queue);
+	kblockd_flush_work(&cfqd->unplug_work);
 }
 
 static void cfq_put_async_queues(struct cfq_data *cfqd)

diff --git a/trunk/block/compat_ioctl.c b/trunk/block/compat_ioctl.c
@@ -581,7 +581,7 @@ static int compat_blkdev_driver_ioctl(struct inode *inode, struct file *file,
 {
 	int ret;
 
-	switch (arg) {
+	switch (cmd) {
 	case HDIO_GET_UNMASKINTR:
 	case HDIO_GET_MULTCOUNT:
 	case HDIO_GET_KEEPSETTINGS:

diff --git a/trunk/block/ll_rw_blk.c b/trunk/block/ll_rw_blk.c
@@ -39,7 +39,7 @@
 
 static void blk_unplug_work(struct work_struct *work);
 static void blk_unplug_timeout(unsigned long data);
-static void drive_stat_acct(struct request *rq, int nr_sectors, int new_io);
+static void drive_stat_acct(struct request *rq, int new_io);
 static void init_request_from_bio(struct request *req, struct bio *bio);
 static int __make_request(struct request_queue *q, struct bio *bio);
 static struct io_context *current_io_context(gfp_t gfp_flags, int node);
@@ -791,7 +791,6 @@ static int __blk_free_tags(struct blk_queue_tag *bqt)
 	retval = atomic_dec_and_test(&bqt->refcnt);
 	if (retval) {
 		BUG_ON(bqt->busy);
-		BUG_ON(!list_empty(&bqt->busy_list));
 
 		kfree(bqt->tag_index);
 		bqt->tag_index = NULL;
@@ -903,7 +902,6 @@ static struct blk_queue_tag *__blk_queue_init_tags(struct request_queue *q,
 	if (init_tag_map(q, tags, depth))
 		goto fail;
 
-	INIT_LIST_HEAD(&tags->busy_list);
 	tags->busy = 0;
 	atomic_set(&tags->refcnt, 1);
 	return tags;
@@ -954,6 +952,7 @@ int blk_queue_init_tags(struct request_queue *q, int depth,
 	 */
 	q->queue_tags = tags;
 	q->queue_flags |= (1 << QUEUE_FLAG_QUEUED);
+	INIT_LIST_HEAD(&q->tag_busy_list);
 	return 0;
 fail:
 	kfree(tags);
@@ -1057,18 +1056,16 @@ void blk_queue_end_tag(struct request_queue *q, struct request *rq)
 
 	bqt->tag_index[tag] = NULL;
 
-	/*
-	 * We use test_and_clear_bit's memory ordering properties here.
-	 * The tag_map bit acts as a lock for tag_index[bit], so we need
-	 * a barrer before clearing the bit (precisely: release semantics).
-	 * Could use clear_bit_unlock when it is merged.
-	 */
-	if (unlikely(!test_and_clear_bit(tag, bqt->tag_map))) {
+	if (unlikely(!test_bit(tag, bqt->tag_map))) {
 		printk(KERN_ERR "%s: attempt to clear non-busy tag (%d)\n",
 		       __FUNCTION__, tag);
 		return;
 	}
-
+	/*
+	 * The tag_map bit acts as a lock for tag_index[bit], so we need
+	 * unlock memory barrier semantics.
+	 */
+	clear_bit_unlock(tag, bqt->tag_map);
 	bqt->busy--;
 }
 
@@ -1114,17 +1111,17 @@ int blk_queue_start_tag(struct request_queue *q, struct request *rq)
 		if (tag >= bqt->max_depth)
 			return 1;
 
-	} while (test_and_set_bit(tag, bqt->tag_map));
+	} while (test_and_set_bit_lock(tag, bqt->tag_map));
 	/*
-	 * We rely on test_and_set_bit providing lock memory ordering semantics
-	 * (could use test_and_set_bit_lock when it is merged).
+	 * We need lock ordering semantics given by test_and_set_bit_lock.
+	 * See blk_queue_end_tag for details.
 	 */
 
 	rq->cmd_flags |= REQ_QUEUED;
 	rq->tag = tag;
 	bqt->tag_index[tag] = rq;
 	blkdev_dequeue_request(rq);
-	list_add(&rq->queuelist, &bqt->busy_list);
+	list_add(&rq->queuelist, &q->tag_busy_list);
 	bqt->busy++;
 	return 0;
 }
@@ -1145,11 +1142,10 @@ EXPORT_SYMBOL(blk_queue_start_tag);
  **/
 void blk_queue_invalidate_tags(struct request_queue *q)
 {
-	struct blk_queue_tag *bqt = q->queue_tags;
 	struct list_head *tmp, *n;
 	struct request *rq;
 
-	list_for_each_safe(tmp, n, &bqt->busy_list) {
+	list_for_each_safe(tmp, n, &q->tag_busy_list) {
 		rq = list_entry_rq(tmp);
 
 		if (rq->tag == -1) {
@@ -1738,6 +1734,7 @@ EXPORT_SYMBOL(blk_stop_queue);
 void blk_sync_queue(struct request_queue *q)
 {
 	del_timer_sync(&q->unplug_timer);
+	kblockd_flush_work(&q->unplug_work);
 }
 EXPORT_SYMBOL(blk_sync_queue);
 
@@ -2341,7 +2338,7 @@ void blk_insert_request(struct request_queue *q, struct request *rq,
 	if (blk_rq_tagged(rq))
 		blk_queue_end_tag(q, rq);
 
-	drive_stat_acct(rq, rq->nr_sectors, 1);
+	drive_stat_acct(rq, 1);
 	__elv_add_request(q, rq, where, 0);
 	blk_start_queueing(q);
 	spin_unlock_irqrestore(q->queue_lock, flags);
@@ -2736,7 +2733,7 @@ int blkdev_issue_flush(struct block_device *bdev, sector_t *error_sector)
 
 EXPORT_SYMBOL(blkdev_issue_flush);
 
-static void drive_stat_acct(struct request *rq, int nr_sectors, int new_io)
+static void drive_stat_acct(struct request *rq, int new_io)
 {
 	int rw = rq_data_dir(rq);
 
@@ -2758,7 +2755,7 @@ static void drive_stat_acct(struct request *rq, int nr_sectors, int new_io)
  */
 static inline void add_request(struct request_queue * q, struct request * req)
 {
-	drive_stat_acct(req, req->nr_sectors, 1);
+	drive_stat_acct(req, 1);
 
 	/*
 	 * elevator indicated where it wants this request to be
@@ -3015,7 +3012,7 @@ static int __make_request(struct request_queue *q, struct bio *bio)
 			req->biotail = bio;
 			req->nr_sectors = req->hard_nr_sectors += nr_sectors;
 			req->ioprio = ioprio_best(req->ioprio, prio);
-			drive_stat_acct(req, nr_sectors, 0);
+			drive_stat_acct(req, 0);
 			if (!attempt_back_merge(q, req))
 				elv_merged_request(q, req, el_ret);
 			goto out;
@@ -3042,7 +3039,7 @@ static int __make_request(struct request_queue *q, struct bio *bio)
 			req->sector = req->hard_sector = bio->bi_sector;
 			req->nr_sectors = req->hard_nr_sectors += nr_sectors;
 			req->ioprio = ioprio_best(req->ioprio, prio);
-			drive_stat_acct(req, nr_sectors, 0);
+			drive_stat_acct(req, 0);
 			if (!attempt_front_merge(q, req))
 				elv_merged_request(q, req, el_ret);
 			goto out;