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-rw-r--r--include/asm-generic/syscalls.h6
-rw-r--r--include/linux/buffer_head.h4
-rw-r--r--include/linux/fs.h21
-rw-r--r--include/linux/fs_struct.h14
-rw-r--r--include/linux/kfifo.h2
-rw-r--r--include/linux/lglock.h172
-rw-r--r--include/linux/mm_types.h2
-rw-r--r--include/linux/spi/spi.h3
-rw-r--r--include/linux/tty.h9
-rw-r--r--include/sound/emu10k1.h1
-rw-r--r--include/trace/events/workqueue.h62
11 files changed, 270 insertions, 26 deletions
diff --git a/include/asm-generic/syscalls.h b/include/asm-generic/syscalls.h
index df84e3b0455..d89dec864d4 100644
--- a/include/asm-generic/syscalls.h
+++ b/include/asm-generic/syscalls.h
@@ -23,8 +23,10 @@ asmlinkage long sys_vfork(struct pt_regs *regs);
#endif
#ifndef sys_execve
-asmlinkage long sys_execve(char __user *filename, char __user * __user *argv,
- char __user * __user *envp, struct pt_regs *regs);
+asmlinkage long sys_execve(const char __user *filename,
+ const char __user *const __user *argv,
+ const char __user *const __user *envp,
+ struct pt_regs *regs);
#endif
#ifndef sys_mmap2
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 43e649a7252..ec94c12f21d 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -32,7 +32,6 @@ enum bh_state_bits {
BH_Delay, /* Buffer is not yet allocated on disk */
BH_Boundary, /* Block is followed by a discontiguity */
BH_Write_EIO, /* I/O error on write */
- BH_Ordered, /* ordered write */
BH_Eopnotsupp, /* operation not supported (barrier) */
BH_Unwritten, /* Buffer is allocated on disk but not written */
BH_Quiet, /* Buffer Error Prinks to be quiet */
@@ -125,7 +124,6 @@ BUFFER_FNS(Async_Write, async_write)
BUFFER_FNS(Delay, delay)
BUFFER_FNS(Boundary, boundary)
BUFFER_FNS(Write_EIO, write_io_error)
-BUFFER_FNS(Ordered, ordered)
BUFFER_FNS(Eopnotsupp, eopnotsupp)
BUFFER_FNS(Unwritten, unwritten)
@@ -183,6 +181,8 @@ void unlock_buffer(struct buffer_head *bh);
void __lock_buffer(struct buffer_head *bh);
void ll_rw_block(int, int, struct buffer_head * bh[]);
int sync_dirty_buffer(struct buffer_head *bh);
+int __sync_dirty_buffer(struct buffer_head *bh, int rw);
+void write_dirty_buffer(struct buffer_head *bh, int rw);
int submit_bh(int, struct buffer_head *);
void write_boundary_block(struct block_device *bdev,
sector_t bblock, unsigned blocksize);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 9a96b4d83fc..76041b61475 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -125,9 +125,6 @@ struct inodes_stat_t {
* block layer could (in theory) choose to ignore this
* request if it runs into resource problems.
* WRITE A normal async write. Device will be plugged.
- * SWRITE Like WRITE, but a special case for ll_rw_block() that
- * tells it to lock the buffer first. Normally a buffer
- * must be locked before doing IO.
* WRITE_SYNC_PLUG Synchronous write. Identical to WRITE, but passes down
* the hint that someone will be waiting on this IO
* shortly. The device must still be unplugged explicitly,
@@ -138,9 +135,6 @@ struct inodes_stat_t {
* immediately after submission. The write equivalent
* of READ_SYNC.
* WRITE_ODIRECT_PLUG Special case write for O_DIRECT only.
- * SWRITE_SYNC
- * SWRITE_SYNC_PLUG Like WRITE_SYNC/WRITE_SYNC_PLUG, but locks the buffer.
- * See SWRITE.
* WRITE_BARRIER Like WRITE_SYNC, but tells the block layer that all
* previously submitted writes must be safely on storage
* before this one is started. Also guarantees that when
@@ -155,7 +149,6 @@ struct inodes_stat_t {
#define READ 0
#define WRITE RW_MASK
#define READA RWA_MASK
-#define SWRITE (WRITE | READA)
#define READ_SYNC (READ | REQ_SYNC | REQ_UNPLUG)
#define READ_META (READ | REQ_META)
@@ -165,8 +158,6 @@ struct inodes_stat_t {
#define WRITE_META (WRITE | REQ_META)
#define WRITE_BARRIER (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG | \
REQ_HARDBARRIER)
-#define SWRITE_SYNC_PLUG (SWRITE | REQ_SYNC | REQ_NOIDLE)
-#define SWRITE_SYNC (SWRITE | REQ_SYNC | REQ_NOIDLE | REQ_UNPLUG)
/*
* These aren't really reads or writes, they pass down information about
@@ -929,6 +920,9 @@ struct file {
#define f_vfsmnt f_path.mnt
const struct file_operations *f_op;
spinlock_t f_lock; /* f_ep_links, f_flags, no IRQ */
+#ifdef CONFIG_SMP
+ int f_sb_list_cpu;
+#endif
atomic_long_t f_count;
unsigned int f_flags;
fmode_t f_mode;
@@ -953,9 +947,6 @@ struct file {
unsigned long f_mnt_write_state;
#endif
};
-extern spinlock_t files_lock;
-#define file_list_lock() spin_lock(&files_lock);
-#define file_list_unlock() spin_unlock(&files_lock);
#define get_file(x) atomic_long_inc(&(x)->f_count)
#define fput_atomic(x) atomic_long_add_unless(&(x)->f_count, -1, 1)
@@ -1346,7 +1337,11 @@ struct super_block {
struct list_head s_inodes; /* all inodes */
struct hlist_head s_anon; /* anonymous dentries for (nfs) exporting */
+#ifdef CONFIG_SMP
+ struct list_head __percpu *s_files;
+#else
struct list_head s_files;
+#endif
/* s_dentry_lru and s_nr_dentry_unused are protected by dcache_lock */
struct list_head s_dentry_lru; /* unused dentry lru */
int s_nr_dentry_unused; /* # of dentry on lru */
@@ -2197,8 +2192,6 @@ static inline void insert_inode_hash(struct inode *inode) {
__insert_inode_hash(inode, inode->i_ino);
}
-extern void file_move(struct file *f, struct list_head *list);
-extern void file_kill(struct file *f);
#ifdef CONFIG_BLOCK
extern void submit_bio(int, struct bio *);
extern int bdev_read_only(struct block_device *);
diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h
index eca3d520213..a42b5bf02f8 100644
--- a/include/linux/fs_struct.h
+++ b/include/linux/fs_struct.h
@@ -5,7 +5,7 @@
struct fs_struct {
int users;
- rwlock_t lock;
+ spinlock_t lock;
int umask;
int in_exec;
struct path root, pwd;
@@ -23,29 +23,29 @@ extern int unshare_fs_struct(void);
static inline void get_fs_root(struct fs_struct *fs, struct path *root)
{
- read_lock(&fs->lock);
+ spin_lock(&fs->lock);
*root = fs->root;
path_get(root);
- read_unlock(&fs->lock);
+ spin_unlock(&fs->lock);
}
static inline void get_fs_pwd(struct fs_struct *fs, struct path *pwd)
{
- read_lock(&fs->lock);
+ spin_lock(&fs->lock);
*pwd = fs->pwd;
path_get(pwd);
- read_unlock(&fs->lock);
+ spin_unlock(&fs->lock);
}
static inline void get_fs_root_and_pwd(struct fs_struct *fs, struct path *root,
struct path *pwd)
{
- read_lock(&fs->lock);
+ spin_lock(&fs->lock);
*root = fs->root;
path_get(root);
*pwd = fs->pwd;
path_get(pwd);
- read_unlock(&fs->lock);
+ spin_unlock(&fs->lock);
}
#endif /* _LINUX_FS_STRUCT_H */
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 311f8753d71..4aa95f203f3 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -836,6 +836,8 @@ extern void __kfifo_dma_out_finish_r(struct __kfifo *fifo, size_t recsize);
extern unsigned int __kfifo_len_r(struct __kfifo *fifo, size_t recsize);
+extern void __kfifo_skip_r(struct __kfifo *fifo, size_t recsize);
+
extern unsigned int __kfifo_out_peek_r(struct __kfifo *fifo,
void *buf, unsigned int len, size_t recsize);
diff --git a/include/linux/lglock.h b/include/linux/lglock.h
new file mode 100644
index 00000000000..b288cb713b9
--- /dev/null
+++ b/include/linux/lglock.h
@@ -0,0 +1,172 @@
+/*
+ * Specialised local-global spinlock. Can only be declared as global variables
+ * to avoid overhead and keep things simple (and we don't want to start using
+ * these inside dynamically allocated structures).
+ *
+ * "local/global locks" (lglocks) can be used to:
+ *
+ * - Provide fast exclusive access to per-CPU data, with exclusive access to
+ * another CPU's data allowed but possibly subject to contention, and to
+ * provide very slow exclusive access to all per-CPU data.
+ * - Or to provide very fast and scalable read serialisation, and to provide
+ * very slow exclusive serialisation of data (not necessarily per-CPU data).
+ *
+ * Brlocks are also implemented as a short-hand notation for the latter use
+ * case.
+ *
+ * Copyright 2009, 2010, Nick Piggin, Novell Inc.
+ */
+#ifndef __LINUX_LGLOCK_H
+#define __LINUX_LGLOCK_H
+
+#include <linux/spinlock.h>
+#include <linux/lockdep.h>
+#include <linux/percpu.h>
+
+/* can make br locks by using local lock for read side, global lock for write */
+#define br_lock_init(name) name##_lock_init()
+#define br_read_lock(name) name##_local_lock()
+#define br_read_unlock(name) name##_local_unlock()
+#define br_write_lock(name) name##_global_lock_online()
+#define br_write_unlock(name) name##_global_unlock_online()
+
+#define DECLARE_BRLOCK(name) DECLARE_LGLOCK(name)
+#define DEFINE_BRLOCK(name) DEFINE_LGLOCK(name)
+
+
+#define lg_lock_init(name) name##_lock_init()
+#define lg_local_lock(name) name##_local_lock()
+#define lg_local_unlock(name) name##_local_unlock()
+#define lg_local_lock_cpu(name, cpu) name##_local_lock_cpu(cpu)
+#define lg_local_unlock_cpu(name, cpu) name##_local_unlock_cpu(cpu)
+#define lg_global_lock(name) name##_global_lock()
+#define lg_global_unlock(name) name##_global_unlock()
+#define lg_global_lock_online(name) name##_global_lock_online()
+#define lg_global_unlock_online(name) name##_global_unlock_online()
+
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+#define LOCKDEP_INIT_MAP lockdep_init_map
+
+#define DEFINE_LGLOCK_LOCKDEP(name) \
+ struct lock_class_key name##_lock_key; \
+ struct lockdep_map name##_lock_dep_map; \
+ EXPORT_SYMBOL(name##_lock_dep_map)
+
+#else
+#define LOCKDEP_INIT_MAP(a, b, c, d)
+
+#define DEFINE_LGLOCK_LOCKDEP(name)
+#endif
+
+
+#define DECLARE_LGLOCK(name) \
+ extern void name##_lock_init(void); \
+ extern void name##_local_lock(void); \
+ extern void name##_local_unlock(void); \
+ extern void name##_local_lock_cpu(int cpu); \
+ extern void name##_local_unlock_cpu(int cpu); \
+ extern void name##_global_lock(void); \
+ extern void name##_global_unlock(void); \
+ extern void name##_global_lock_online(void); \
+ extern void name##_global_unlock_online(void); \
+
+#define DEFINE_LGLOCK(name) \
+ \
+ DEFINE_PER_CPU(arch_spinlock_t, name##_lock); \
+ DEFINE_LGLOCK_LOCKDEP(name); \
+ \
+ void name##_lock_init(void) { \
+ int i; \
+ LOCKDEP_INIT_MAP(&name##_lock_dep_map, #name, &name##_lock_key, 0); \
+ for_each_possible_cpu(i) { \
+ arch_spinlock_t *lock; \
+ lock = &per_cpu(name##_lock, i); \
+ *lock = (arch_spinlock_t)__ARCH_SPIN_LOCK_UNLOCKED; \
+ } \
+ } \
+ EXPORT_SYMBOL(name##_lock_init); \
+ \
+ void name##_local_lock(void) { \
+ arch_spinlock_t *lock; \
+ preempt_disable(); \
+ rwlock_acquire_read(&name##_lock_dep_map, 0, 0, _THIS_IP_); \
+ lock = &__get_cpu_var(name##_lock); \
+ arch_spin_lock(lock); \
+ } \
+ EXPORT_SYMBOL(name##_local_lock); \
+ \
+ void name##_local_unlock(void) { \
+ arch_spinlock_t *lock; \
+ rwlock_release(&name##_lock_dep_map, 1, _THIS_IP_); \
+ lock = &__get_cpu_var(name##_lock); \
+ arch_spin_unlock(lock); \
+ preempt_enable(); \
+ } \
+ EXPORT_SYMBOL(name##_local_unlock); \
+ \
+ void name##_local_lock_cpu(int cpu) { \
+ arch_spinlock_t *lock; \
+ preempt_disable(); \
+ rwlock_acquire_read(&name##_lock_dep_map, 0, 0, _THIS_IP_); \
+ lock = &per_cpu(name##_lock, cpu); \
+ arch_spin_lock(lock); \
+ } \
+ EXPORT_SYMBOL(name##_local_lock_cpu); \
+ \
+ void name##_local_unlock_cpu(int cpu) { \
+ arch_spinlock_t *lock; \
+ rwlock_release(&name##_lock_dep_map, 1, _THIS_IP_); \
+ lock = &per_cpu(name##_lock, cpu); \
+ arch_spin_unlock(lock); \
+ preempt_enable(); \
+ } \
+ EXPORT_SYMBOL(name##_local_unlock_cpu); \
+ \
+ void name##_global_lock_online(void) { \
+ int i; \
+ preempt_disable(); \
+ rwlock_acquire(&name##_lock_dep_map, 0, 0, _RET_IP_); \
+ for_each_online_cpu(i) { \
+ arch_spinlock_t *lock; \
+ lock = &per_cpu(name##_lock, i); \
+ arch_spin_lock(lock); \
+ } \
+ } \
+ EXPORT_SYMBOL(name##_global_lock_online); \
+ \
+ void name##_global_unlock_online(void) { \
+ int i; \
+ rwlock_release(&name##_lock_dep_map, 1, _RET_IP_); \
+ for_each_online_cpu(i) { \
+ arch_spinlock_t *lock; \
+ lock = &per_cpu(name##_lock, i); \
+ arch_spin_unlock(lock); \
+ } \
+ preempt_enable(); \
+ } \
+ EXPORT_SYMBOL(name##_global_unlock_online); \
+ \
+ void name##_global_lock(void) { \
+ int i; \
+ preempt_disable(); \
+ rwlock_acquire(&name##_lock_dep_map, 0, 0, _RET_IP_); \
+ for_each_online_cpu(i) { \
+ arch_spinlock_t *lock; \
+ lock = &per_cpu(name##_lock, i); \
+ arch_spin_lock(lock); \
+ } \
+ } \
+ EXPORT_SYMBOL(name##_global_lock); \
+ \
+ void name##_global_unlock(void) { \
+ int i; \
+ rwlock_release(&name##_lock_dep_map, 1, _RET_IP_); \
+ for_each_online_cpu(i) { \
+ arch_spinlock_t *lock; \
+ lock = &per_cpu(name##_lock, i); \
+ arch_spin_unlock(lock); \
+ } \
+ preempt_enable(); \
+ } \
+ EXPORT_SYMBOL(name##_global_unlock);
+#endif
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index b8bb9a6a1f3..ee7e258627f 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -134,7 +134,7 @@ struct vm_area_struct {
within vm_mm. */
/* linked list of VM areas per task, sorted by address */
- struct vm_area_struct *vm_next;
+ struct vm_area_struct *vm_next, *vm_prev;
pgprot_t vm_page_prot; /* Access permissions of this VMA. */
unsigned long vm_flags; /* Flags, see mm.h. */
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index ae0a5286f55..92e52a1e6af 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -213,6 +213,9 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
* @dma_alignment: SPI controller constraint on DMA buffers alignment.
* @mode_bits: flags understood by this controller driver
* @flags: other constraints relevant to this driver
+ * @bus_lock_spinlock: spinlock for SPI bus locking
+ * @bus_lock_mutex: mutex for SPI bus locking
+ * @bus_lock_flag: indicates that the SPI bus is locked for exclusive use
* @setup: updates the device mode and clocking records used by a
* device's SPI controller; protocol code may call this. This
* must fail if an unrecognized or unsupported mode is requested.
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 1437da3ddc6..67d64e6efe7 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -329,6 +329,13 @@ struct tty_struct {
struct tty_port *port;
};
+/* Each of a tty's open files has private_data pointing to tty_file_private */
+struct tty_file_private {
+ struct tty_struct *tty;
+ struct file *file;
+ struct list_head list;
+};
+
/* tty magic number */
#define TTY_MAGIC 0x5401
@@ -458,6 +465,7 @@ extern void proc_clear_tty(struct task_struct *p);
extern struct tty_struct *get_current_tty(void);
extern void tty_default_fops(struct file_operations *fops);
extern struct tty_struct *alloc_tty_struct(void);
+extern void tty_add_file(struct tty_struct *tty, struct file *file);
extern void free_tty_struct(struct tty_struct *tty);
extern void initialize_tty_struct(struct tty_struct *tty,
struct tty_driver *driver, int idx);
@@ -470,6 +478,7 @@ extern struct tty_struct *tty_pair_get_tty(struct tty_struct *tty);
extern struct tty_struct *tty_pair_get_pty(struct tty_struct *tty);
extern struct mutex tty_mutex;
+extern spinlock_t tty_files_lock;
extern void tty_write_unlock(struct tty_struct *tty);
extern int tty_write_lock(struct tty_struct *tty, int ndelay);
diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h
index 6a664c3f7c1..7dc97d12253 100644
--- a/include/sound/emu10k1.h
+++ b/include/sound/emu10k1.h
@@ -1707,6 +1707,7 @@ struct snd_emu10k1 {
unsigned int card_type; /* EMU10K1_CARD_* */
unsigned int ecard_ctrl; /* ecard control bits */
unsigned long dma_mask; /* PCI DMA mask */
+ unsigned int delay_pcm_irq; /* in samples */
int max_cache_pages; /* max memory size / PAGE_SIZE */
struct snd_dma_buffer silent_page; /* silent page */
struct snd_dma_buffer ptb_pages; /* page table pages */
diff --git a/include/trace/events/workqueue.h b/include/trace/events/workqueue.h
new file mode 100644
index 00000000000..49682d7e9d6
--- /dev/null
+++ b/include/trace/events/workqueue.h
@@ -0,0 +1,62 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM workqueue
+
+#if !defined(_TRACE_WORKQUEUE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_WORKQUEUE_H
+
+#include <linux/tracepoint.h>
+#include <linux/workqueue.h>
+
+/**
+ * workqueue_execute_start - called immediately before the workqueue callback
+ * @work: pointer to struct work_struct
+ *
+ * Allows to track workqueue execution.
+ */
+TRACE_EVENT(workqueue_execute_start,
+
+ TP_PROTO(struct work_struct *work),
+
+ TP_ARGS(work),
+
+ TP_STRUCT__entry(
+ __field( void *, work )
+ __field( void *, function)
+ ),
+
+ TP_fast_assign(
+ __entry->work = work;
+ __entry->function = work->func;
+ ),
+
+ TP_printk("work struct %p: function %pf", __entry->work, __entry->function)
+);
+
+/**
+ * workqueue_execute_end - called immediately before the workqueue callback
+ * @work: pointer to struct work_struct
+ *
+ * Allows to track workqueue execution.
+ */
+TRACE_EVENT(workqueue_execute_end,
+
+ TP_PROTO(struct work_struct *work),
+
+ TP_ARGS(work),
+
+ TP_STRUCT__entry(
+ __field( void *, work )
+ ),
+
+ TP_fast_assign(
+ __entry->work = work;
+ ),
+
+ TP_printk("work struct %p", __entry->work)
+);
+
+
+#endif /* _TRACE_WORKQUEUE_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-24 02:47:09 +0000