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authorLinus Torvalds <torvalds@linux-foundation.org>2011-11-02 16:07:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-02 16:07:27 -0700
commit092f4c56c1927e4b61a41ee8055005f1cb437009 (patch)
tree616ceb54b7671ccc13922ae9e002b8b972f6e09e /include/linux
parent80c2861672bbf000f6af838656959ee937e4ee4d (diff)
parentc1e2ee2dc436574880758b3836fc96935b774c32 (diff)
downloadlinux-stericsson-092f4c56c1927e4b61a41ee8055005f1cb437009.tar.gz
Merge branch 'akpm' (Andrew's incoming - part two)
Says Andrew: "60 patches. That's good enough for -rc1 I guess. I have quite a lot of detritus to be rechecked, work through maintainers, etc. - most of the remains of MM - rtc - various misc - cgroups - memcg - cpusets - procfs - ipc - rapidio - sysctl - pps - w1 - drivers/misc - aio" * akpm: (60 commits) memcg: replace ss->id_lock with a rwlock aio: allocate kiocbs in batches drivers/misc/vmw_balloon.c: fix typo in code comment drivers/misc/vmw_balloon.c: determine page allocation flag can_sleep outside loop w1: disable irqs in critical section drivers/w1/w1_int.c: multiple masters used same init_name drivers/power/ds2780_battery.c: fix deadlock upon insertion and removal drivers/power/ds2780_battery.c: add a nolock function to w1 interface drivers/power/ds2780_battery.c: create central point for calling w1 interface w1: ds2760 and ds2780, use ida for id and ida_simple_get() to get it pps gpio client: add missing dependency pps: new client driver using GPIO pps: default echo function include/linux/dma-mapping.h: add dma_zalloc_coherent() sysctl: make CONFIG_SYSCTL_SYSCALL default to n sysctl: add support for poll() RapidIO: documentation update drivers/net/rionet.c: fix ethernet address macros for LE platforms RapidIO: fix potential null deref in rio_setup_device() RapidIO: add mport driver for Tsi721 bridge ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/aio.h1
-rw-r--r--include/linux/cgroup.h2
-rw-r--r--include/linux/dma-mapping.h10
-rw-r--r--include/linux/magic.h10
-rw-r--r--include/linux/memcontrol.h44
-rw-r--r--include/linux/mm.h67
-rw-r--r--include/linux/mm_types.h21
-rw-r--r--include/linux/pps-gpio.h32
-rw-r--r--include/linux/rio_ids.h1
-rw-r--r--include/linux/sem.h49
-rw-r--r--include/linux/sysctl.h22
-rw-r--r--include/linux/utsname.h16
12 files changed, 168 insertions, 107 deletions
diff --git a/include/linux/aio.h b/include/linux/aio.h
index 2dcb72bff4b6..2314ad8b3c9c 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -117,6 +117,7 @@ struct kiocb {
struct list_head ki_list; /* the aio core uses this
* for cancellation */
+ struct list_head ki_batch; /* batch allocation */
/*
* If the aio_resfd field of the userspace iocb is not zero,
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index da7e4bc34e8c..1b7f9d525013 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -516,7 +516,7 @@ struct cgroup_subsys {
struct list_head sibling;
/* used when use_id == true */
struct idr idr;
- spinlock_t id_lock;
+ rwlock_t id_lock;
/* should be defined only by modular subsystems */
struct module *module;
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 347fdc32177a..be86ae13893f 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -1,6 +1,7 @@
#ifndef _LINUX_DMA_MAPPING_H
#define _LINUX_DMA_MAPPING_H
+#include <linux/string.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/dma-attrs.h>
@@ -117,6 +118,15 @@ static inline int dma_set_seg_boundary(struct device *dev, unsigned long mask)
return -EIO;
}
+static inline void *dma_zalloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flag)
+{
+ void *ret = dma_alloc_coherent(dev, size, dma_handle, flag);
+ if (ret)
+ memset(ret, 0, size);
+ return ret;
+}
+
#ifdef CONFIG_HAS_DMA
static inline int dma_get_cache_alignment(void)
{
diff --git a/include/linux/magic.h b/include/linux/magic.h
index 1e5df2af8d84..2d4beab0d5b7 100644
--- a/include/linux/magic.h
+++ b/include/linux/magic.h
@@ -30,11 +30,11 @@
#define ANON_INODE_FS_MAGIC 0x09041934
#define PSTOREFS_MAGIC 0x6165676C
-#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
-#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
-#define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */
-#define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */
-#define MINIX3_SUPER_MAGIC 0x4d5a /* minix V3 fs */
+#define MINIX_SUPER_MAGIC 0x137F /* minix v1 fs, 14 char names */
+#define MINIX_SUPER_MAGIC2 0x138F /* minix v1 fs, 30 char names */
+#define MINIX2_SUPER_MAGIC 0x2468 /* minix v2 fs, 14 char names */
+#define MINIX2_SUPER_MAGIC2 0x2478 /* minix v2 fs, 30 char names */
+#define MINIX3_SUPER_MAGIC 0x4d5a /* minix v3 fs, 60 char names */
#define MSDOS_SUPER_MAGIC 0x4d44 /* MD */
#define NCP_SUPER_MAGIC 0x564c /* Guess, what 0x564c is :-) */
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index ac797fa03ef8..b87068a1a09e 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -78,8 +78,8 @@ extern void mem_cgroup_uncharge_end(void);
extern void mem_cgroup_uncharge_page(struct page *page);
extern void mem_cgroup_uncharge_cache_page(struct page *page);
-extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask);
-int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem);
+extern void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask);
+int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *memcg);
extern struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page);
extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
@@ -88,26 +88,28 @@ extern struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm);
static inline
int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup)
{
- struct mem_cgroup *mem;
+ struct mem_cgroup *memcg;
rcu_read_lock();
- mem = mem_cgroup_from_task(rcu_dereference((mm)->owner));
+ memcg = mem_cgroup_from_task(rcu_dereference((mm)->owner));
rcu_read_unlock();
- return cgroup == mem;
+ return cgroup == memcg;
}
-extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem);
+extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *memcg);
extern int
mem_cgroup_prepare_migration(struct page *page,
struct page *newpage, struct mem_cgroup **ptr, gfp_t gfp_mask);
-extern void mem_cgroup_end_migration(struct mem_cgroup *mem,
+extern void mem_cgroup_end_migration(struct mem_cgroup *memcg,
struct page *oldpage, struct page *newpage, bool migration_ok);
/*
* For memory reclaim.
*/
-int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg);
-int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg);
+int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg,
+ struct zone *zone);
+int mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg,
+ struct zone *zone);
int mem_cgroup_select_victim_node(struct mem_cgroup *memcg);
unsigned long mem_cgroup_zone_nr_lru_pages(struct mem_cgroup *memcg,
int nid, int zid, unsigned int lrumask);
@@ -148,7 +150,7 @@ static inline void mem_cgroup_dec_page_stat(struct page *page,
unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
gfp_t gfp_mask,
unsigned long *total_scanned);
-u64 mem_cgroup_get_limit(struct mem_cgroup *mem);
+u64 mem_cgroup_get_limit(struct mem_cgroup *memcg);
void mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx);
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -244,18 +246,20 @@ static inline struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm
return NULL;
}
-static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem)
+static inline int mm_match_cgroup(struct mm_struct *mm,
+ struct mem_cgroup *memcg)
{
return 1;
}
static inline int task_in_mem_cgroup(struct task_struct *task,
- const struct mem_cgroup *mem)
+ const struct mem_cgroup *memcg)
{
return 1;
}
-static inline struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem)
+static inline struct cgroup_subsys_state
+ *mem_cgroup_css(struct mem_cgroup *memcg)
{
return NULL;
}
@@ -267,22 +271,22 @@ mem_cgroup_prepare_migration(struct page *page, struct page *newpage,
return 0;
}
-static inline void mem_cgroup_end_migration(struct mem_cgroup *mem,
+static inline void mem_cgroup_end_migration(struct mem_cgroup *memcg,
struct page *oldpage, struct page *newpage, bool migration_ok)
{
}
-static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem)
+static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *memcg)
{
return 0;
}
-static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
+static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *memcg,
int priority)
{
}
-static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
+static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *memcg,
int priority)
{
}
@@ -293,13 +297,13 @@ static inline bool mem_cgroup_disabled(void)
}
static inline int
-mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg)
+mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg, struct zone *zone)
{
return 1;
}
static inline int
-mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg)
+mem_cgroup_inactive_file_is_low(struct mem_cgroup *memcg, struct zone *zone)
{
return 1;
}
@@ -348,7 +352,7 @@ unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
}
static inline
-u64 mem_cgroup_get_limit(struct mem_cgroup *mem)
+u64 mem_cgroup_get_limit(struct mem_cgroup *memcg)
{
return 0;
}
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3b3e3b8bb706..3dc3a8c2c485 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -356,36 +356,50 @@ static inline struct page *compound_head(struct page *page)
return page;
}
+/*
+ * The atomic page->_mapcount, starts from -1: so that transitions
+ * both from it and to it can be tracked, using atomic_inc_and_test
+ * and atomic_add_negative(-1).
+ */
+static inline void reset_page_mapcount(struct page *page)
+{
+ atomic_set(&(page)->_mapcount, -1);
+}
+
+static inline int page_mapcount(struct page *page)
+{
+ return atomic_read(&(page)->_mapcount) + 1;
+}
+
static inline int page_count(struct page *page)
{
return atomic_read(&compound_head(page)->_count);
}
+static inline void get_huge_page_tail(struct page *page)
+{
+ /*
+ * __split_huge_page_refcount() cannot run
+ * from under us.
+ */
+ VM_BUG_ON(page_mapcount(page) < 0);
+ VM_BUG_ON(atomic_read(&page->_count) != 0);
+ atomic_inc(&page->_mapcount);
+}
+
+extern bool __get_page_tail(struct page *page);
+
static inline void get_page(struct page *page)
{
+ if (unlikely(PageTail(page)))
+ if (likely(__get_page_tail(page)))
+ return;
/*
* Getting a normal page or the head of a compound page
- * requires to already have an elevated page->_count. Only if
- * we're getting a tail page, the elevated page->_count is
- * required only in the head page, so for tail pages the
- * bugcheck only verifies that the page->_count isn't
- * negative.
+ * requires to already have an elevated page->_count.
*/
- VM_BUG_ON(atomic_read(&page->_count) < !PageTail(page));
+ VM_BUG_ON(atomic_read(&page->_count) <= 0);
atomic_inc(&page->_count);
- /*
- * Getting a tail page will elevate both the head and tail
- * page->_count(s).
- */
- if (unlikely(PageTail(page))) {
- /*
- * This is safe only because
- * __split_huge_page_refcount can't run under
- * get_page().
- */
- VM_BUG_ON(atomic_read(&page->first_page->_count) <= 0);
- atomic_inc(&page->first_page->_count);
- }
}
static inline struct page *virt_to_head_page(const void *x)
@@ -804,21 +818,6 @@ static inline pgoff_t page_index(struct page *page)
}
/*
- * The atomic page->_mapcount, like _count, starts from -1:
- * so that transitions both from it and to it can be tracked,
- * using atomic_inc_and_test and atomic_add_negative(-1).
- */
-static inline void reset_page_mapcount(struct page *page)
-{
- atomic_set(&(page)->_mapcount, -1);
-}
-
-static inline int page_mapcount(struct page *page)
-{
- return atomic_read(&(page)->_mapcount) + 1;
-}
-
-/*
* Return true if this page is mapped into pagetables.
*/
static inline int page_mapped(struct page *page)
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 3e01a19a91e8..5b42f1b34eb7 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -62,10 +62,23 @@ struct page {
struct {
union {
- atomic_t _mapcount; /* Count of ptes mapped in mms,
- * to show when page is mapped
- * & limit reverse map searches.
- */
+ /*
+ * Count of ptes mapped in
+ * mms, to show when page is
+ * mapped & limit reverse map
+ * searches.
+ *
+ * Used also for tail pages
+ * refcounting instead of
+ * _count. Tail pages cannot
+ * be mapped and keeping the
+ * tail page _count zero at
+ * all times guarantees
+ * get_page_unless_zero() will
+ * never succeed on tail
+ * pages.
+ */
+ atomic_t _mapcount;
struct {
unsigned inuse:16;
diff --git a/include/linux/pps-gpio.h b/include/linux/pps-gpio.h
new file mode 100644
index 000000000000..0035abe41b9a
--- /dev/null
+++ b/include/linux/pps-gpio.h
@@ -0,0 +1,32 @@
+/*
+ * pps-gpio.h -- PPS client for GPIOs
+ *
+ *
+ * Copyright (C) 2011 James Nuss <jamesnuss@nanometrics.ca>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _PPS_GPIO_H
+#define _PPS_GPIO_H
+
+struct pps_gpio_platform_data {
+ bool assert_falling_edge;
+ bool capture_clear;
+ unsigned int gpio_pin;
+ const char *gpio_label;
+};
+
+#endif
diff --git a/include/linux/rio_ids.h b/include/linux/rio_ids.h
index 0cee0152aca9..b66d13d1bdc0 100644
--- a/include/linux/rio_ids.h
+++ b/include/linux/rio_ids.h
@@ -39,5 +39,6 @@
#define RIO_DID_IDTCPS1616 0x0379
#define RIO_DID_IDTVPS1616 0x0377
#define RIO_DID_IDTSPS1616 0x0378
+#define RIO_DID_TSI721 0x80ab
#endif /* LINUX_RIO_IDS_H */
diff --git a/include/linux/sem.h b/include/linux/sem.h
index 1feb2de2ee57..10d6b226afc5 100644
--- a/include/linux/sem.h
+++ b/include/linux/sem.h
@@ -83,13 +83,6 @@ struct seminfo {
struct task_struct;
-/* One semaphore structure for each semaphore in the system. */
-struct sem {
- int semval; /* current value */
- int sempid; /* pid of last operation */
- struct list_head sem_pending; /* pending single-sop operations */
-};
-
/* One sem_array data structure for each set of semaphores in the system. */
struct sem_array {
struct kern_ipc_perm ____cacheline_aligned_in_smp
@@ -103,51 +96,21 @@ struct sem_array {
int complex_count; /* pending complex operations */
};
-/* One queue for each sleeping process in the system. */
-struct sem_queue {
- struct list_head simple_list; /* queue of pending operations */
- struct list_head list; /* queue of pending operations */
- struct task_struct *sleeper; /* this process */
- struct sem_undo *undo; /* undo structure */
- int pid; /* process id of requesting process */
- int status; /* completion status of operation */
- struct sembuf *sops; /* array of pending operations */
- int nsops; /* number of operations */
- int alter; /* does the operation alter the array? */
-};
-
-/* Each task has a list of undo requests. They are executed automatically
- * when the process exits.
- */
-struct sem_undo {
- struct list_head list_proc; /* per-process list: all undos from one process. */
- /* rcu protected */
- struct rcu_head rcu; /* rcu struct for sem_undo() */
- struct sem_undo_list *ulp; /* sem_undo_list for the process */
- struct list_head list_id; /* per semaphore array list: all undos for one array */
- int semid; /* semaphore set identifier */
- short * semadj; /* array of adjustments, one per semaphore */
-};
-
-/* sem_undo_list controls shared access to the list of sem_undo structures
- * that may be shared among all a CLONE_SYSVSEM task group.
- */
-struct sem_undo_list {
- atomic_t refcnt;
- spinlock_t lock;
- struct list_head list_proc;
-};
+#ifdef CONFIG_SYSVIPC
struct sysv_sem {
struct sem_undo_list *undo_list;
};
-#ifdef CONFIG_SYSVIPC
-
extern int copy_semundo(unsigned long clone_flags, struct task_struct *tsk);
extern void exit_sem(struct task_struct *tsk);
#else
+
+struct sysv_sem {
+ /* empty */
+};
+
static inline int copy_semundo(unsigned long clone_flags, struct task_struct *tsk)
{
return 0;
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 9a1ec10fd504..703cfa33a3ca 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -931,6 +931,7 @@ enum
#ifdef __KERNEL__
#include <linux/list.h>
#include <linux/rcupdate.h>
+#include <linux/wait.h>
/* For the /proc/sys support */
struct ctl_table;
@@ -1011,6 +1012,26 @@ extern int proc_do_large_bitmap(struct ctl_table *, int,
* cover common cases.
*/
+/* Support for userspace poll() to watch for changes */
+struct ctl_table_poll {
+ atomic_t event;
+ wait_queue_head_t wait;
+};
+
+static inline void *proc_sys_poll_event(struct ctl_table_poll *poll)
+{
+ return (void *)(unsigned long)atomic_read(&poll->event);
+}
+
+void proc_sys_poll_notify(struct ctl_table_poll *poll);
+
+#define __CTL_TABLE_POLL_INITIALIZER(name) { \
+ .event = ATOMIC_INIT(0), \
+ .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait) }
+
+#define DEFINE_CTL_TABLE_POLL(name) \
+ struct ctl_table_poll name = __CTL_TABLE_POLL_INITIALIZER(name)
+
/* A sysctl table is an array of struct ctl_table: */
struct ctl_table
{
@@ -1021,6 +1042,7 @@ struct ctl_table
struct ctl_table *child;
struct ctl_table *parent; /* Automatically set */
proc_handler *proc_handler; /* Callback for text formatting */
+ struct ctl_table_poll *poll;
void *extra1;
void *extra2;
};
diff --git a/include/linux/utsname.h b/include/linux/utsname.h
index 4e5b0213fdc1..c714ed75eae2 100644
--- a/include/linux/utsname.h
+++ b/include/linux/utsname.h
@@ -37,6 +37,14 @@ struct new_utsname {
#include <linux/nsproxy.h>
#include <linux/err.h>
+enum uts_proc {
+ UTS_PROC_OSTYPE,
+ UTS_PROC_OSRELEASE,
+ UTS_PROC_VERSION,
+ UTS_PROC_HOSTNAME,
+ UTS_PROC_DOMAINNAME,
+};
+
struct user_namespace;
extern struct user_namespace init_user_ns;
@@ -80,6 +88,14 @@ static inline struct uts_namespace *copy_utsname(unsigned long flags,
}
#endif
+#ifdef CONFIG_PROC_SYSCTL
+extern void uts_proc_notify(enum uts_proc proc);
+#else
+static inline void uts_proc_notify(enum uts_proc proc)
+{
+}
+#endif
+
static inline struct new_utsname *utsname(void)
{
return &current->nsproxy->uts_ns->name;