type stringclasses 5
values | content stringlengths 9 163k |
|---|---|
defines | #define FLAGS_CLOCKRT 0x02 |
defines | #define FLAGS_HAS_TIMEOUT 0x04 |
structs | struct futex_pi_state {
/*
* list of 'owned' pi_state instances - these have to be
* cleaned up in do_exit() if the task exits prematurely:
*/
struct list_head list;
/*
* The PI object:
*/
struct rt_mutex pi_mutex;
struct task_struct *owner;
atomic_t refcount;
union futex_key key;
}; |
structs | struct futex_q {
struct plist_node list;
struct task_struct *task;
spinlock_t *lock_ptr;
union futex_key key;
struct futex_pi_state *pi_state;
struct rt_mutex_waiter *rt_waiter;
union futex_key *requeue_pi_key;
u32 bitset;
}; |
structs | struct futex_hash_bucket {
spinlock_t lock;
struct plist_head chain;
}; |
functions | int match_futex(union futex_key *key1, union futex_key *key2)
{
return (key1 && key2
&& key1->both.word == key2->both.word
&& key1->both.ptr == key2->both.ptr
&& key1->both.offset == key2->both.offset);
} |
functions | void get_futex_key_refs(union futex_key *key)
{
if (!key->both.ptr)
return;
switch (key->both.offset & (FUT_OFF_INODE|FUT_OFF_MMSHARED)) {
case FUT_OFF_INODE:
ihold(key->shared.inode);
break;
case FUT_OFF_MMSHARED:
atomic_inc(&key->private.mm->mm_count);
break;
} |
functions | void drop_futex_key_refs(union futex_key *key)
{
if (!key->both.ptr) {
/* If we're here then we tried to put a key we failed to get */
WARN_ON_ONCE(1);
return;
} |
functions | int
get_futex_key(u32 __user *uaddr, int fshared, union futex_key *key, int rw)
{
unsigned long address = (unsigned long)uaddr;
struct mm_struct *mm = current->mm;
struct page *page, *page_head;
int err, ro = 0;
/*
* The futex address must be "naturally" aligned.
*/
key->both.offset = address % PAGE_SIZE;
i... |
functions | void put_futex_key(union futex_key *key)
{
drop_futex_key_refs(key);
} |
functions | int fault_in_user_writeable(u32 __user *uaddr)
{
struct mm_struct *mm = current->mm;
int ret;
down_read(&mm->mmap_sem);
ret = fixup_user_fault(current, mm, (unsigned long)uaddr,
FAULT_FLAG_WRITE);
up_read(&mm->mmap_sem);
return ret < 0 ? ret : 0;
} |
functions | int cmpxchg_futex_value_locked(u32 *curval, u32 __user *uaddr,
u32 uval, u32 newval)
{
int ret;
pagefault_disable();
ret = futex_atomic_cmpxchg_inatomic(curval, uaddr, uval, newval);
pagefault_enable();
return ret;
} |
functions | int get_futex_value_locked(u32 *dest, u32 __user *from)
{
int ret;
pagefault_disable();
ret = __copy_from_user_inatomic(dest, from, sizeof(u32));
pagefault_enable();
return ret ? -EFAULT : 0;
} |
functions | int refill_pi_state_cache(void)
{
struct futex_pi_state *pi_state;
if (likely(current->pi_state_cache))
return 0;
pi_state = kzalloc(sizeof(*pi_state), GFP_KERNEL);
if (!pi_state)
return -ENOMEM;
INIT_LIST_HEAD(&pi_state->list);
/* pi_mutex gets initialized later */
pi_state->owner = NULL;
atomic_set(&p... |
functions | void free_pi_state(struct futex_pi_state *pi_state)
{
if (!atomic_dec_and_test(&pi_state->refcount))
return;
/*
* If pi_state->owner is NULL, the owner is most probably dying
* and has cleaned up the pi_state already
*/
if (pi_state->owner) {
raw_spin_lock_irq(&pi_state->owner->pi_lock);
list_del_init(&... |
functions | void exit_pi_state_list(struct task_struct *curr)
{
struct list_head *next, *head = &curr->pi_state_list;
struct futex_pi_state *pi_state;
struct futex_hash_bucket *hb;
union futex_key key = FUTEX_KEY_INIT;
if (!futex_cmpxchg_enabled)
return;
/*
* We are a ZOMBIE and nobody can enqueue itself on
* pi_state... |
functions | int
lookup_pi_state(u32 uval, struct futex_hash_bucket *hb,
union futex_key *key, struct futex_pi_state **ps)
{
struct futex_pi_state *pi_state = NULL;
struct futex_q *this, *next;
struct plist_head *head;
struct task_struct *p;
pid_t pid = uval & FUTEX_TID_MASK;
head = &hb->chain;
plist_for_each_entry_safe(... |
functions | int futex_lock_pi_atomic(u32 __user *uaddr, struct futex_hash_bucket *hb,
union futex_key *key,
struct futex_pi_state **ps,
struct task_struct *task, int set_waiters)
{
int lock_taken, ret, force_take = 0;
u32 uval, newval, curval, vpid = task_pid_vnr(task);
retry:
ret = lock_taken = 0;
/*
* To avoi... |
functions | void __unqueue_futex(struct futex_q *q)
{
struct futex_hash_bucket *hb;
if (WARN_ON_SMP(!q->lock_ptr || !spin_is_locked(q->lock_ptr))
|| WARN_ON(plist_node_empty(&q->list)))
return;
hb = container_of(q->lock_ptr, struct futex_hash_bucket, lock);
plist_del(&q->list, &hb->chain);
} |
functions | void wake_futex(struct futex_q *q)
{
struct task_struct *p = q->task;
if (WARN(q->pi_state || q->rt_waiter, "refusing to wake PI futex\n"))
return;
/*
* We set q->lock_ptr = NULL _before_ we wake up the task. If
* a non-futex wake up happens on another CPU then the task
* might exit and p would dereference... |
functions | int wake_futex_pi(u32 __user *uaddr, u32 uval, struct futex_q *this)
{
struct task_struct *new_owner;
struct futex_pi_state *pi_state = this->pi_state;
u32 uninitialized_var(curval), newval;
int ret = 0;
if (!pi_state)
return -EINVAL;
/*
* If current does not own the pi_state then the futex is
* inconsist... |
functions | int unlock_futex_pi(u32 __user *uaddr, u32 uval)
{
u32 uninitialized_var(oldval);
/*
* There is no waiter, so we unlock the futex. The owner died
* bit has not to be preserved here. We are the owner:
*/
if (cmpxchg_futex_value_locked(&oldval, uaddr, uval, 0))
return -EFAULT;
if (oldval != uval)
return -E... |
functions | void
double_lock_hb(struct futex_hash_bucket *hb1, struct futex_hash_bucket *hb2)
{
if (hb1 <= hb2) {
spin_lock(&hb1->lock);
if (hb1 < hb2)
spin_lock_nested(&hb2->lock, SINGLE_DEPTH_NESTING);
} |
functions | void
double_unlock_hb(struct futex_hash_bucket *hb1, struct futex_hash_bucket *hb2)
{
spin_unlock(&hb1->lock);
if (hb1 != hb2)
spin_unlock(&hb2->lock);
} |
functions | int
futex_wake(u32 __user *uaddr, unsigned int flags, int nr_wake, u32 bitset)
{
struct futex_hash_bucket *hb;
struct futex_q *this, *next;
struct plist_head *head;
union futex_key key = FUTEX_KEY_INIT;
int ret;
if (!bitset)
return -EINVAL;
ret = get_futex_key(uaddr, flags & FLAGS_SHARED, &key, VERIFY_READ);... |
functions | int
futex_wake_op(u32 __user *uaddr1, unsigned int flags, u32 __user *uaddr2,
int nr_wake, int nr_wake2, int op)
{
union futex_key key1 = FUTEX_KEY_INIT, key2 = FUTEX_KEY_INIT;
struct futex_hash_bucket *hb1, *hb2;
struct plist_head *head;
struct futex_q *this, *next;
int ret, op_ret;
retry:
ret = get_fute... |
functions | void requeue_futex(struct futex_q *q, struct futex_hash_bucket *hb1,
struct futex_hash_bucket *hb2, union futex_key *key2)
{
/*
* If key1 and key2 hash to the same bucket, no need to
* requeue.
*/
if (likely(&hb1->chain != &hb2->chain)) {
plist_del(&q->list, &hb1->chain);
plist_add(&q->list, &hb2->cha... |
functions | void requeue_pi_wake_futex(struct futex_q *q, union futex_key *key,
struct futex_hash_bucket *hb)
{
get_futex_key_refs(key);
q->key = *key;
__unqueue_futex(q);
WARN_ON(!q->rt_waiter);
q->rt_waiter = NULL;
q->lock_ptr = &hb->lock;
wake_up_state(q->task, TASK_NORMAL);
} |
functions | int futex_proxy_trylock_atomic(u32 __user *pifutex,
struct futex_hash_bucket *hb1,
struct futex_hash_bucket *hb2,
union futex_key *key1, union futex_key *key2,
struct futex_pi_state **ps, int set_waiters)
{
struct futex_q *top_waiter = NULL;
u32 curval;
int ret, vpid;
if (get_futex_value_locked... |
functions | int futex_requeue(u32 __user *uaddr1, unsigned int flags,
u32 __user *uaddr2, int nr_wake, int nr_requeue,
u32 *cmpval, int requeue_pi)
{
union futex_key key1 = FUTEX_KEY_INIT, key2 = FUTEX_KEY_INIT;
int drop_count = 0, task_count = 0, ret;
struct futex_pi_state *pi_state = NULL;
struct futex_hash_bucket *h... |
functions | else if (ret) {
/* -EDEADLK */
this->pi_state = NULL;
free_pi_state(pi_state);
goto out_unlock;
} |
functions | int unqueue_me(struct futex_q *q)
{
spinlock_t *lock_ptr;
int ret = 0;
/* In the common case we don't take the spinlock, which is nice. */
retry:
lock_ptr = q->lock_ptr;
barrier();
if (lock_ptr != NULL) {
spin_lock(lock_ptr);
/*
* q->lock_ptr can change between reading it and
* spin_lock(), causing us ... |
functions | int fixup_pi_state_owner(u32 __user *uaddr, struct futex_q *q,
struct task_struct *newowner)
{
u32 newtid = task_pid_vnr(newowner) | FUTEX_WAITERS;
struct futex_pi_state *pi_state = q->pi_state;
struct task_struct *oldowner = pi_state->owner;
u32 uval, uninitialized_var(curval), newval;
int ret;
/* Owner die... |
functions | int fixup_owner(u32 __user *uaddr, struct futex_q *q, int locked)
{
struct task_struct *owner;
int ret = 0;
if (locked) {
/*
* Got the lock. We might not be the anticipated owner if we
* did a lock-steal - fix up the PI-state in that case:
*/
if (q->pi_state->owner != current)
ret = fixup_pi_state_o... |
functions | void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q,
struct hrtimer_sleeper *timeout)
{
/*
* The task state is guaranteed to be set before another task can
* wake it. set_current_state() is implemented using set_mb() and
* queue_me() calls spin_unlock() upon completion, both serializing
... |
functions | int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags,
struct futex_q *q, struct futex_hash_bucket **hb)
{
u32 uval;
int ret;
/*
* Access the page AFTER the hash-bucket is locked.
* Order is important:
*
* Userspace waiter: val = var; if (cond(val)) futex_wait(&var, val);
* Userspa... |
functions | int futex_wait(u32 __user *uaddr, unsigned int flags, u32 val,
ktime_t *abs_time, u32 bitset)
{
struct hrtimer_sleeper timeout, *to = NULL;
struct restart_block *restart;
struct futex_hash_bucket *hb;
struct futex_q q = futex_q_init;
int ret;
if (!bitset)
return -EINVAL;
q.bitset = bitset;
if (abs_t... |
functions | long futex_wait_restart(struct restart_block *restart)
{
u32 __user *uaddr = restart->futex.uaddr;
ktime_t t, *tp = NULL;
if (restart->futex.flags & FLAGS_HAS_TIMEOUT) {
t.tv64 = restart->futex.time;
tp = &t;
} |
functions | int futex_lock_pi(u32 __user *uaddr, unsigned int flags, int detect,
ktime_t *time, int trylock)
{
struct hrtimer_sleeper timeout, *to = NULL;
struct futex_hash_bucket *hb;
struct futex_q q = futex_q_init;
int res, ret;
if (refill_pi_state_cache())
return -ENOMEM;
if (time) {
to = &timeout;
hrtimer_in... |
functions | int futex_unlock_pi(u32 __user *uaddr, unsigned int flags)
{
struct futex_hash_bucket *hb;
struct futex_q *this, *next;
struct plist_head *head;
union futex_key key = FUTEX_KEY_INIT;
u32 uval, vpid = task_pid_vnr(current);
int ret;
retry:
if (get_user(uval, uaddr))
return -EFAULT;
/*
* We release only a lo... |
functions | int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
struct futex_q *q, union futex_key *key2,
struct hrtimer_sleeper *timeout)
{
int ret = 0;
/*
* With the hb lock held, we avoid races while we process the wakeup.
* We only need to hold hb (and not hb2) to ensure atomicity as the
* w... |
functions | int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
u32 val, ktime_t *abs_time, u32 bitset,
u32 __user *uaddr2)
{
struct hrtimer_sleeper timeout, *to = NULL;
struct rt_mutex_waiter rt_waiter;
struct rt_mutex *pi_mutex = NULL;
struct futex_hash_bucket *hb;
union futex_key key2 = FUTEX_KEY_INI... |
functions | else if (ret == -EINTR) {
/*
* We've already been requeued, but cannot restart by calling
* futex_lock_pi() directly. We could restart this syscall, but
* it would detect that the user space "val" changed and return
* -EWOULDBLOCK. Save the overhead of the restart and return
* -EWOULDBLOCK directly.
... |
functions | int handle_futex_death(u32 __user *uaddr, struct task_struct *curr, int pi)
{
u32 uval, uninitialized_var(nval), mval;
retry:
if (get_user(uval, uaddr))
return -1;
if ((uval & FUTEX_TID_MASK) == task_pid_vnr(curr)) {
/*
* Ok, this dying thread is truly holding a futex
* of interest. Set the OWNER_DIED bi... |
functions | int fetch_robust_entry(struct robust_list __user **entry,
struct robust_list __user * __user *head,
unsigned int *pi)
{
unsigned long uentry;
if (get_user(uentry, (unsigned long __user *)head))
return -EFAULT;
*entry = (void __user *)(uentry & ~1UL);
*pi = uentry & 1;
return 0;
} |
functions | void exit_robust_list(struct task_struct *curr)
{
struct robust_list_head __user *head = curr->robust_list;
struct robust_list __user *entry, *next_entry, *pending;
unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
unsigned int uninitialized_var(next_pi);
unsigned long futex_offset;
int rc;
if (!futex_cmpxchg_en... |
functions | long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout,
u32 __user *uaddr2, u32 val2, u32 val3)
{
int cmd = op & FUTEX_CMD_MASK;
unsigned int flags = 0;
if (!(op & FUTEX_PRIVATE_FLAG))
flags |= FLAGS_SHARED;
if (op & FUTEX_CLOCK_REALTIME) {
flags |= FLAGS_CLOCKRT;
if (cmd != FUTEX_WAIT_BITSET ... |
functions | __init futex_detect_cmpxchg(void)
{
#ifndef CONFIG_HAVE_FUTEX_CMPXCHG
u32 curval;
/*
* This will fail and we want it. Some arch implementations do
* runtime detection of the futex_atomic_cmpxchg_inatomic()
* functionality. We want to know that before we call in any
* of the complex code paths. Also we want t... |
functions | __init futex_init(void)
{
int i;
futex_detect_cmpxchg();
for (i = 0; i < ARRAY_SIZE(futex_queues); i++) {
plist_head_init(&futex_queues[i].chain);
spin_lock_init(&futex_queues[i].lock);
} |
includes | #include <linux/platform_device.h> |
includes | #include <linux/cdev.h> |
includes | #include <linux/list.h> |
includes | #include <linux/module.h> |
includes | #include <linux/fs.h> |
includes | #include <linux/interrupt.h> |
includes | #include <linux/sched.h> |
includes | #include <linux/uaccess.h> |
includes | #include <linux/clk.h> |
includes | #include <linux/android_pmem.h> |
includes | #include <linux/msm_rotator.h> |
includes | #include <linux/io.h> |
includes | #include <mach/msm_rotator_imem.h> |
includes | #include <linux/ktime.h> |
includes | #include <linux/workqueue.h> |
includes | #include <linux/file.h> |
includes | #include <linux/major.h> |
includes | #include <linux/regulator/consumer.h> |
includes | #include <linux/msm_ion.h> |
includes | #include <linux/sync.h> |
includes | #include <linux/sw_sync.h> |
includes | #include <mach/msm_bus.h> |
includes | #include <mach/msm_bus_board.h> |
includes | #include <mach/msm_subsystem_map.h> |
includes | #include <mach/iommu_domains.h> |
defines |
#define DRIVER_NAME "msm_rotator" |
defines |
#define MSM_ROTATOR_BASE (msm_rotator_dev->io_base) |
defines | #define MSM_ROTATOR_INTR_ENABLE (MSM_ROTATOR_BASE+0x0020) |
defines | #define MSM_ROTATOR_INTR_STATUS (MSM_ROTATOR_BASE+0x0024) |
defines | #define MSM_ROTATOR_INTR_CLEAR (MSM_ROTATOR_BASE+0x0028) |
defines | #define MSM_ROTATOR_START (MSM_ROTATOR_BASE+0x0030) |
defines | #define MSM_ROTATOR_MAX_BURST_SIZE (MSM_ROTATOR_BASE+0x0050) |
defines | #define MSM_ROTATOR_HW_VERSION (MSM_ROTATOR_BASE+0x0070) |
defines | #define MSM_ROTATOR_SW_RESET (MSM_ROTATOR_BASE+0x0074) |
defines | #define MSM_ROTATOR_SRC_SIZE (MSM_ROTATOR_BASE+0x1108) |
defines | #define MSM_ROTATOR_SRCP0_ADDR (MSM_ROTATOR_BASE+0x110c) |
defines | #define MSM_ROTATOR_SRCP1_ADDR (MSM_ROTATOR_BASE+0x1110) |
defines | #define MSM_ROTATOR_SRCP2_ADDR (MSM_ROTATOR_BASE+0x1114) |
defines | #define MSM_ROTATOR_SRC_YSTRIDE1 (MSM_ROTATOR_BASE+0x111c) |
defines | #define MSM_ROTATOR_SRC_YSTRIDE2 (MSM_ROTATOR_BASE+0x1120) |
defines | #define MSM_ROTATOR_SRC_FORMAT (MSM_ROTATOR_BASE+0x1124) |
defines | #define MSM_ROTATOR_SRC_UNPACK_PATTERN1 (MSM_ROTATOR_BASE+0x1128) |
defines | #define MSM_ROTATOR_SUB_BLOCK_CFG (MSM_ROTATOR_BASE+0x1138) |
defines | #define MSM_ROTATOR_OUT_PACK_PATTERN1 (MSM_ROTATOR_BASE+0x1154) |
defines | #define MSM_ROTATOR_OUTP0_ADDR (MSM_ROTATOR_BASE+0x1168) |
defines | #define MSM_ROTATOR_OUTP1_ADDR (MSM_ROTATOR_BASE+0x116c) |
defines | #define MSM_ROTATOR_OUTP2_ADDR (MSM_ROTATOR_BASE+0x1170) |
defines | #define MSM_ROTATOR_OUT_YSTRIDE1 (MSM_ROTATOR_BASE+0x1178) |
defines | #define MSM_ROTATOR_OUT_YSTRIDE2 (MSM_ROTATOR_BASE+0x117c) |
defines | #define MSM_ROTATOR_SRC_XY (MSM_ROTATOR_BASE+0x1200) |
defines | #define MSM_ROTATOR_SRC_IMAGE_SIZE (MSM_ROTATOR_BASE+0x1208) |
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