Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86

* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: fix asm-x86/msr.h for user-space export
  x86: fix asm-x86/byteorder.h for userspace export

diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index ac0637a6d71cc75637cff60888c78cbfb5a504b1..fbad51fce672b25f4f30cf24ca81da8bc628a574 100644 (file)
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -196,7 +196,7 @@ default_entry:
        /* Do an early initialization of the fixmap area */
        movl $(swapper_pg_dir - __PAGE_OFFSET), %edx
        movl $(swapper_pg_pmd - __PAGE_OFFSET), %eax
-       addl $0x007, %eax                       /* 0x007 = PRESENT+RW+USER */
+       addl $0x67, %eax                        /* 0x67 == _PAGE_TABLE */
        movl %eax, 4092(%edx)
 
        xorl %ebx,%ebx                          /* This is the boot CPU (BSP) */

diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index ba8b04b03b9f2799eacba45927595553ce4141df..64c66b3769c99edf05af6ae8d104a70a8240f2e1 100644 (file)
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -106,9 +106,9 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
                goto err_out;
 
        /* add to the list of leds */
-       write_lock(&leds_list_lock);
+       down_write(&leds_list_lock);
        list_add_tail(&led_cdev->node, &leds_list);
-       write_unlock(&leds_list_lock);
+       up_write(&leds_list_lock);
 
 #ifdef CONFIG_LEDS_TRIGGERS
        init_rwsem(&led_cdev->trigger_lock);
@@ -155,9 +155,9 @@ void led_classdev_unregister(struct led_classdev *led_cdev)
 
        device_unregister(led_cdev->dev);
 
-       write_lock(&leds_list_lock);
+       down_write(&leds_list_lock);
        list_del(&led_cdev->node);
-       write_unlock(&leds_list_lock);
+       up_write(&leds_list_lock);
 }
 EXPORT_SYMBOL_GPL(led_classdev_unregister);
 

diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c
index 9b015f9af351e49526eb52ec0f0c09b4acb21e56..5d1ca10524b6933bc216fb282815ac6f348cc9d0 100644 (file)
--- a/drivers/leds/led-core.c
+++ b/drivers/leds/led-core.c
@@ -14,11 +14,11 @@
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/module.h>
-#include <linux/spinlock.h>
+#include <linux/rwsem.h>
 #include <linux/leds.h>
 #include "leds.h"
 
-DEFINE_RWLOCK(leds_list_lock);
+DECLARE_RWSEM(leds_list_lock);
 LIST_HEAD(leds_list);
 
 EXPORT_SYMBOL_GPL(leds_list);

diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 0bdb786210b1885bee8e6f194ccdcab09e5bdd18..13c9026d68af0af90e246824df1429496afe6814 100644 (file)
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -169,7 +169,7 @@ int led_trigger_register(struct led_trigger *trigger)
        up_write(&triggers_list_lock);
 
        /* Register with any LEDs that have this as a default trigger */
-       read_lock(&leds_list_lock);
+       down_read(&leds_list_lock);
        list_for_each_entry(led_cdev, &leds_list, node) {
                down_write(&led_cdev->trigger_lock);
                if (!led_cdev->trigger && led_cdev->default_trigger &&
@@ -177,7 +177,7 @@ int led_trigger_register(struct led_trigger *trigger)
                        led_trigger_set(led_cdev, trigger);
                up_write(&led_cdev->trigger_lock);
        }
-       read_unlock(&leds_list_lock);
+       up_read(&leds_list_lock);
 
        return 0;
 }
@@ -212,14 +212,14 @@ void led_trigger_unregister(struct led_trigger *trigger)
        up_write(&triggers_list_lock);
 
        /* Remove anyone actively using this trigger */
-       read_lock(&leds_list_lock);
+       down_read(&leds_list_lock);
        list_for_each_entry(led_cdev, &leds_list, node) {
                down_write(&led_cdev->trigger_lock);
                if (led_cdev->trigger == trigger)
                        led_trigger_set(led_cdev, NULL);
                up_write(&led_cdev->trigger_lock);
        }
-       read_unlock(&leds_list_lock);
+       up_read(&leds_list_lock);
 }
 
 void led_trigger_unregister_simple(struct led_trigger *trigger)

diff --git a/drivers/leds/leds-locomo.c b/drivers/leds/leds-locomo.c
index bfac499f3258f74fd2c96267c7e9b9a5361a72bf..2207335e9212e97b64a05bdd290819ceee83a89d 100644 (file)
--- a/drivers/leds/leds-locomo.c
+++ b/drivers/leds/leds-locomo.c
@@ -19,7 +19,7 @@
 static void locomoled_brightness_set(struct led_classdev *led_cdev,
                                enum led_brightness value, int offset)
 {
-       struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev);
+       struct locomo_dev *locomo_dev = LOCOMO_DEV(led_cdev->dev->parent);
        unsigned long flags;
 
        local_irq_save(flags);

diff --git a/drivers/leds/leds.h b/drivers/leds/leds.h
index f2f3884fe06314b01a3bb647821c6b4e0ea88e89..12b6fe93b1356b980241ef2f7dae3fd325c30090 100644 (file)
--- a/drivers/leds/leds.h
+++ b/drivers/leds/leds.h
@@ -14,6 +14,7 @@
 #define __LEDS_H_INCLUDED
 
 #include <linux/device.h>
+#include <linux/rwsem.h>
 #include <linux/leds.h>
 
 static inline void led_set_brightness(struct led_classdev *led_cdev,
@@ -26,7 +27,7 @@ static inline void led_set_brightness(struct led_classdev *led_cdev,
                led_cdev->brightness_set(led_cdev, value);
 }
 
-extern rwlock_t leds_list_lock;
+extern struct rw_semaphore leds_list_lock;
 extern struct list_head leds_list;
 
 #ifdef CONFIG_LEDS_TRIGGERS

diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 40801e754afb48430e3af7c59497b5726e298250..b7d9408a00ff1eb1c820f8cfad0954814545111f 100644 (file)
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -200,4 +200,6 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
 }
 #endif
 
+extern const struct seq_operations slabinfo_op;
+
 #endif /* _LINUX_SLUB_DEF_H */

diff --git a/mm/slub.c b/mm/slub.c
index 3655ad359f03b7a776b93fc3bc192d683400859b..903dabd92daf00436452da7fd714816d1a45f504 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3076,6 +3076,19 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
        return slab_alloc(s, gfpflags, node, caller);
 }
 
+static unsigned long count_partial(struct kmem_cache_node *n)
+{
+       unsigned long flags;
+       unsigned long x = 0;
+       struct page *page;
+
+       spin_lock_irqsave(&n->list_lock, flags);
+       list_for_each_entry(page, &n->partial, lru)
+               x += page->inuse;
+       spin_unlock_irqrestore(&n->list_lock, flags);
+       return x;
+}
+
 #if defined(CONFIG_SYSFS) && defined(CONFIG_SLUB_DEBUG)
 static int validate_slab(struct kmem_cache *s, struct page *page,
                                                unsigned long *map)
@@ -3458,19 +3471,6 @@ static int list_locations(struct kmem_cache *s, char *buf,
        return n;
 }
 
-static unsigned long count_partial(struct kmem_cache_node *n)
-{
-       unsigned long flags;
-       unsigned long x = 0;
-       struct page *page;
-
-       spin_lock_irqsave(&n->list_lock, flags);
-       list_for_each_entry(page, &n->partial, lru)
-               x += page->inuse;
-       spin_unlock_irqrestore(&n->list_lock, flags);
-       return x;
-}
-
 enum slab_stat_type {
        SL_FULL,
        SL_PARTIAL,
@@ -4123,3 +4123,82 @@ static int __init slab_sysfs_init(void)
 
 __initcall(slab_sysfs_init);
 #endif
+
+/*
+ * The /proc/slabinfo ABI
+ */
+#ifdef CONFIG_PROC_FS
+
+static void print_slabinfo_header(struct seq_file *m)
+{
+       seq_puts(m, "slabinfo - version: 2.1\n");
+       seq_puts(m, "# name            <active_objs> <num_objs> <objsize> "
+                "<objperslab> <pagesperslab>");
+       seq_puts(m, " : tunables <limit> <batchcount> <sharedfactor>");
+       seq_puts(m, " : slabdata <active_slabs> <num_slabs> <sharedavail>");
+       seq_putc(m, '\n');
+}
+
+static void *s_start(struct seq_file *m, loff_t *pos)
+{
+       loff_t n = *pos;
+
+       down_read(&slub_lock);
+       if (!n)
+               print_slabinfo_header(m);
+
+       return seq_list_start(&slab_caches, *pos);
+}
+
+static void *s_next(struct seq_file *m, void *p, loff_t *pos)
+{
+       return seq_list_next(p, &slab_caches, pos);
+}
+
+static void s_stop(struct seq_file *m, void *p)
+{
+       up_read(&slub_lock);
+}
+
+static int s_show(struct seq_file *m, void *p)
+{
+       unsigned long nr_partials = 0;
+       unsigned long nr_slabs = 0;
+       unsigned long nr_inuse = 0;
+       unsigned long nr_objs;
+       struct kmem_cache *s;
+       int node;
+
+       s = list_entry(p, struct kmem_cache, list);
+
+       for_each_online_node(node) {
+               struct kmem_cache_node *n = get_node(s, node);
+
+               if (!n)
+                       continue;
+
+               nr_partials += n->nr_partial;
+               nr_slabs += atomic_long_read(&n->nr_slabs);
+               nr_inuse += count_partial(n);
+       }
+
+       nr_objs = nr_slabs * s->objects;
+       nr_inuse += (nr_slabs - nr_partials) * s->objects;
+
+       seq_printf(m, "%-17s %6lu %6lu %6u %4u %4d", s->name, nr_inuse,
+                  nr_objs, s->size, s->objects, (1 << s->order));
+       seq_printf(m, " : tunables %4u %4u %4u", 0, 0, 0);
+       seq_printf(m, " : slabdata %6lu %6lu %6lu", nr_slabs, nr_slabs,
+                  0UL);
+       seq_putc(m, '\n');
+       return 0;
+}
+
+const struct seq_operations slabinfo_op = {
+       .start = s_start,
+       .next = s_next,
+       .stop = s_stop,
+       .show = s_show,
+};
+
+#endif /* CONFIG_PROC_FS */