diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/backing-dev.h | 4 | ||||
| -rw-r--r-- | include/linux/cgroup.h | 20 | ||||
| -rw-r--r-- | include/linux/compiler-gcc.h | 10 | ||||
| -rw-r--r-- | include/linux/compiler-gcc4.h | 4 | ||||
| -rw-r--r-- | include/linux/drbd.h | 2 | ||||
| -rw-r--r-- | include/linux/list.h | 15 | ||||
| -rw-r--r-- | include/linux/suspend.h | 26 | ||||
| -rw-r--r-- | include/linux/tracepoint.h | 1 |
8 files changed, 59 insertions, 23 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index aee5f6ce166..9ae2889096b 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -105,8 +105,8 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent, int bdi_register_dev(struct backing_dev_info *bdi, dev_t dev); void bdi_unregister(struct backing_dev_info *bdi); int bdi_setup_and_register(struct backing_dev_info *, char *, unsigned int); -void bdi_start_writeback(struct backing_dev_info *bdi, struct super_block *sb, - long nr_pages); +void bdi_start_writeback(struct backing_dev_info *bdi, long nr_pages); +void bdi_start_background_writeback(struct backing_dev_info *bdi); int bdi_writeback_task(struct bdi_writeback *wb); int bdi_has_dirty_io(struct backing_dev_info *bdi); void bdi_arm_supers_timer(void); diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 0c621604baa..e3d00fdb858 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -525,13 +525,21 @@ static inline struct cgroup_subsys_state *cgroup_subsys_state( return cgrp->subsys[subsys_id]; } -static inline struct cgroup_subsys_state *task_subsys_state( - struct task_struct *task, int subsys_id) +/* + * function to get the cgroup_subsys_state which allows for extra + * rcu_dereference_check() conditions, such as locks used during the + * cgroup_subsys::attach() methods. + */ +#define task_subsys_state_check(task, subsys_id, __c) \ + rcu_dereference_check(task->cgroups->subsys[subsys_id], \ + rcu_read_lock_held() || \ + lockdep_is_held(&task->alloc_lock) || \ + cgroup_lock_is_held() || (__c)) + +static inline struct cgroup_subsys_state * +task_subsys_state(struct task_struct *task, int subsys_id) { - return rcu_dereference_check(task->cgroups->subsys[subsys_id], - rcu_read_lock_held() || - lockdep_is_held(&task->alloc_lock) || - cgroup_lock_is_held()); + return task_subsys_state_check(task, subsys_id, false); } static inline struct cgroup* task_cgroup(struct task_struct *task, diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h index 73dcf804bc9..0da5b187f12 100644 --- a/include/linux/compiler-gcc.h +++ b/include/linux/compiler-gcc.h @@ -58,8 +58,12 @@ * naked functions because then mcount is called without stack and frame pointer * being set up and there is no chance to restore the lr register to the value * before mcount was called. + * + * The asm() bodies of naked functions often depend on standard calling conventions, + * therefore they must be noinline and noclone. GCC 4.[56] currently fail to enforce + * this, so we must do so ourselves. See GCC PR44290. */ -#define __naked __attribute__((naked)) notrace +#define __naked __attribute__((naked)) noinline __noclone notrace #define __noreturn __attribute__((noreturn)) @@ -85,3 +89,7 @@ #define _gcc_header(x) __gcc_header(linux/compiler-gcc##x.h) #define gcc_header(x) _gcc_header(x) #include gcc_header(__GNUC__) + +#if !defined(__noclone) +#define __noclone /* not needed */ +#endif diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h index 94dea3ffbfa..fcfa5b9a431 100644 --- a/include/linux/compiler-gcc4.h +++ b/include/linux/compiler-gcc4.h @@ -48,6 +48,10 @@ * unreleased. Really, we need to have autoconf for the kernel. */ #define unreachable() __builtin_unreachable() + +/* Mark a function definition as prohibited from being cloned. */ +#define __noclone __attribute__((__noclone__)) + #endif #endif diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 30da4ae4897..b8d2516668a 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -53,7 +53,7 @@ extern const char *drbd_buildtag(void); -#define REL_VERSION "8.3.8rc2" +#define REL_VERSION "8.3.8" #define API_VERSION 88 #define PRO_VERSION_MIN 86 #define PRO_VERSION_MAX 94 diff --git a/include/linux/list.h b/include/linux/list.h index 8392884a297..5d57a3a1fa1 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -544,6 +544,21 @@ static inline void list_splice_tail_init(struct list_head *list, &pos->member != (head); \ pos = n, n = list_entry(n->member.prev, typeof(*n), member)) +/** + * list_safe_reset_next - reset a stale list_for_each_entry_safe loop + * @pos: the loop cursor used in the list_for_each_entry_safe loop + * @n: temporary storage used in list_for_each_entry_safe + * @member: the name of the list_struct within the struct. + * + * list_safe_reset_next is not safe to use in general if the list may be + * modified concurrently (eg. the lock is dropped in the loop body). An + * exception to this is if the cursor element (pos) is pinned in the list, + * and list_safe_reset_next is called after re-taking the lock and before + * completing the current iteration of the loop body. + */ +#define list_safe_reset_next(pos, n, member) \ + n = list_entry(pos->member.next, typeof(*pos), member) + /* * Double linked lists with a single pointer list head. * Mostly useful for hash tables where the two pointer list head is diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 5e781d824e6..bc7d6bb4cd8 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -256,22 +256,22 @@ static inline int hibernate(void) { return -ENOSYS; } static inline bool system_entering_hibernation(void) { return false; } #endif /* CONFIG_HIBERNATION */ -#ifdef CONFIG_HIBERNATION_NVS -extern int hibernate_nvs_register(unsigned long start, unsigned long size); -extern int hibernate_nvs_alloc(void); -extern void hibernate_nvs_free(void); -extern void hibernate_nvs_save(void); -extern void hibernate_nvs_restore(void); -#else /* CONFIG_HIBERNATION_NVS */ -static inline int hibernate_nvs_register(unsigned long a, unsigned long b) +#ifdef CONFIG_SUSPEND_NVS +extern int suspend_nvs_register(unsigned long start, unsigned long size); +extern int suspend_nvs_alloc(void); +extern void suspend_nvs_free(void); +extern void suspend_nvs_save(void); +extern void suspend_nvs_restore(void); +#else /* CONFIG_SUSPEND_NVS */ +static inline int suspend_nvs_register(unsigned long a, unsigned long b) { return 0; } -static inline int hibernate_nvs_alloc(void) { return 0; } -static inline void hibernate_nvs_free(void) {} -static inline void hibernate_nvs_save(void) {} -static inline void hibernate_nvs_restore(void) {} -#endif /* CONFIG_HIBERNATION_NVS */ +static inline int suspend_nvs_alloc(void) { return 0; } +static inline void suspend_nvs_free(void) {} +static inline void suspend_nvs_save(void) {} +static inline void suspend_nvs_restore(void) {} +#endif /* CONFIG_SUSPEND_NVS */ #ifdef CONFIG_PM_SLEEP void save_processor_state(void); diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index 9a59d1f98cd..103d1b61aac 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -14,6 +14,7 @@ * See the file COPYING for more details. */ +#include <linux/errno.h> #include <linux/types.h> #include <linux/rcupdate.h> |