From 36c8b586896f60cb91a4fd526233190b34316baf Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 3 Jul 2006 00:25:41 -0700 Subject: [PATCH] sched: cleanup, remove task_t, convert to struct task_struct cleanup: remove task_t and convert all the uses to struct task_struct. I introduced it for the scheduler anno and it was a mistake. Conversion was mostly scripted, the result was reviewed and all secondary whitespace and style impact (if any) was fixed up by hand. Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/kernel/process.c | 2 +- arch/ia64/kernel/mca.c | 10 +- arch/ia64/kernel/smpboot.c | 2 +- arch/mips/kernel/entry.S | 2 +- arch/mips/kernel/mips-mt.c | 6 +- arch/um/kernel/tt/process_kern.c | 2 +- drivers/char/tty_io.c | 2 +- fs/eventpoll.c | 4 +- include/asm-ia64/thread_info.h | 2 +- include/asm-m32r/system.h | 2 +- include/asm-sh/system.h | 2 +- include/linux/sched.h | 55 +++++------ kernel/capability.c | 8 +- kernel/exit.c | 35 +++---- kernel/fork.c | 18 ++-- kernel/hrtimer.c | 2 +- kernel/pid.c | 6 +- kernel/ptrace.c | 6 +- kernel/rtmutex-debug.c | 5 +- kernel/rtmutex-tester.c | 4 +- kernel/rtmutex.c | 11 ++- kernel/sched.c | 192 ++++++++++++++++++++------------------- kernel/timer.c | 2 +- kernel/workqueue.c | 2 +- mm/oom_kill.c | 8 +- 25 files changed, 203 insertions(+), 187 deletions(-) diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c index 01c8c8b23337..41ebf51a107a 100644 --- a/arch/alpha/kernel/process.c +++ b/arch/alpha/kernel/process.c @@ -474,7 +474,7 @@ out: */ unsigned long -thread_saved_pc(task_t *t) +thread_saved_pc(struct task_struct *t) { unsigned long base = (unsigned long)task_stack_page(t); unsigned long fp, sp = task_thread_info(t)->pcb.ksp; diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c index eb8e8dc5ac8e..2fbe4536fe18 100644 --- a/arch/ia64/kernel/mca.c +++ b/arch/ia64/kernel/mca.c @@ -678,7 +678,7 @@ copy_reg(const u64 *fr, u64 fnat, u64 *tr, u64 *tnat) */ static void -ia64_mca_modify_comm(const task_t *previous_current) +ia64_mca_modify_comm(const struct task_struct *previous_current) { char *p, comm[sizeof(current->comm)]; if (previous_current->pid) @@ -709,7 +709,7 @@ ia64_mca_modify_comm(const task_t *previous_current) * that we can do backtrace on the MCA/INIT handler code itself. */ -static task_t * +static struct task_struct * ia64_mca_modify_original_stack(struct pt_regs *regs, const struct switch_stack *sw, struct ia64_sal_os_state *sos, @@ -719,7 +719,7 @@ ia64_mca_modify_original_stack(struct pt_regs *regs, ia64_va va; extern char ia64_leave_kernel[]; /* Need asm address, not function descriptor */ const pal_min_state_area_t *ms = sos->pal_min_state; - task_t *previous_current; + struct task_struct *previous_current; struct pt_regs *old_regs; struct switch_stack *old_sw; unsigned size = sizeof(struct pt_regs) + @@ -1023,7 +1023,7 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw, pal_processor_state_info_t *psp = (pal_processor_state_info_t *) &sos->proc_state_param; int recover, cpu = smp_processor_id(); - task_t *previous_current; + struct task_struct *previous_current; struct ia64_mca_notify_die nd = { .sos = sos, .monarch_cpu = &monarch_cpu }; @@ -1352,7 +1352,7 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw, { static atomic_t slaves; static atomic_t monarchs; - task_t *previous_current; + struct task_struct *previous_current; int cpu = smp_processor_id(); struct ia64_mca_notify_die nd = { .sos = sos, .monarch_cpu = &monarch_cpu }; diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c index e1960979be29..6203ed4ec8cf 100644 --- a/arch/ia64/kernel/smpboot.c +++ b/arch/ia64/kernel/smpboot.c @@ -124,7 +124,7 @@ extern void __devinit calibrate_delay (void); extern void start_ap (void); extern unsigned long ia64_iobase; -task_t *task_for_booting_cpu; +struct task_struct *task_for_booting_cpu; /* * State for each CPU diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S index ecfd637d702a..01e7fa86aa43 100644 --- a/arch/mips/kernel/entry.S +++ b/arch/mips/kernel/entry.S @@ -65,7 +65,7 @@ need_resched: #endif FEXPORT(ret_from_fork) - jal schedule_tail # a0 = task_t *prev + jal schedule_tail # a0 = struct task_struct *prev FEXPORT(syscall_exit) local_irq_disable # make sure need_resched and diff --git a/arch/mips/kernel/mips-mt.c b/arch/mips/kernel/mips-mt.c index 02237a685ec7..4dcc39f42951 100644 --- a/arch/mips/kernel/mips-mt.c +++ b/arch/mips/kernel/mips-mt.c @@ -47,7 +47,7 @@ unsigned long mt_fpemul_threshold = 0; * used in sys_sched_set/getaffinity() in kernel/sched.c, so * cloned here. */ -static inline task_t *find_process_by_pid(pid_t pid) +static inline struct task_struct *find_process_by_pid(pid_t pid) { return pid ? find_task_by_pid(pid) : current; } @@ -62,7 +62,7 @@ asmlinkage long mipsmt_sys_sched_setaffinity(pid_t pid, unsigned int len, cpumask_t new_mask; cpumask_t effective_mask; int retval; - task_t *p; + struct task_struct *p; if (len < sizeof(new_mask)) return -EINVAL; @@ -127,7 +127,7 @@ asmlinkage long mipsmt_sys_sched_getaffinity(pid_t pid, unsigned int len, unsigned int real_len; cpumask_t mask; int retval; - task_t *p; + struct task_struct *p; real_len = sizeof(mask); if (len < real_len) diff --git a/arch/um/kernel/tt/process_kern.c b/arch/um/kernel/tt/process_kern.c index a9c1443fc548..8368c2dbe635 100644 --- a/arch/um/kernel/tt/process_kern.c +++ b/arch/um/kernel/tt/process_kern.c @@ -119,7 +119,7 @@ void suspend_new_thread(int fd) panic("read failed in suspend_new_thread, err = %d", -err); } -void schedule_tail(task_t *prev); +void schedule_tail(struct task_struct *prev); static void new_thread_handler(int sig) { diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index 6fb77952562d..bfdb90242a90 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -2336,7 +2336,7 @@ static int fionbio(struct file *file, int __user *p) static int tiocsctty(struct tty_struct *tty, int arg) { - task_t *p; + struct task_struct *p; if (current->signal->leader && (current->signal->session == tty->session)) diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 9c677bbd0b08..19ffb043abbc 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -120,7 +120,7 @@ struct epoll_filefd { */ struct wake_task_node { struct list_head llink; - task_t *task; + struct task_struct *task; wait_queue_head_t *wq; }; @@ -413,7 +413,7 @@ static void ep_poll_safewake(struct poll_safewake *psw, wait_queue_head_t *wq) { int wake_nests = 0; unsigned long flags; - task_t *this_task = current; + struct task_struct *this_task = current; struct list_head *lsthead = &psw->wake_task_list, *lnk; struct wake_task_node *tncur; struct wake_task_node tnode; diff --git a/include/asm-ia64/thread_info.h b/include/asm-ia64/thread_info.h index 8bc9869e5765..8adcde0934ca 100644 --- a/include/asm-ia64/thread_info.h +++ b/include/asm-ia64/thread_info.h @@ -68,7 +68,7 @@ struct thread_info { #define end_of_stack(p) (unsigned long *)((void *)(p) + IA64_RBS_OFFSET) #define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR -#define alloc_task_struct() ((task_t *)__get_free_pages(GFP_KERNEL | __GFP_COMP, KERNEL_STACK_SIZE_ORDER)) +#define alloc_task_struct() ((struct task_struct *)__get_free_pages(GFP_KERNEL | __GFP_COMP, KERNEL_STACK_SIZE_ORDER)) #define free_task_struct(tsk) free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER) #endif /* !__ASSEMBLY */ diff --git a/include/asm-m32r/system.h b/include/asm-m32r/system.h index 66c4742f09e7..311cebf44eff 100644 --- a/include/asm-m32r/system.h +++ b/include/asm-m32r/system.h @@ -18,7 +18,7 @@ * switch_to(prev, next) should switch from task `prev' to `next' * `prev' will never be the same as `next'. * - * `next' and `prev' should be task_t, but it isn't always defined + * `next' and `prev' should be struct task_struct, but it isn't always defined */ #define switch_to(prev, next, last) do { \ diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h index b752e5cbb830..ce2e60664a86 100644 --- a/include/asm-sh/system.h +++ b/include/asm-sh/system.h @@ -12,7 +12,7 @@ */ #define switch_to(prev, next, last) do { \ - task_t *__last; \ + struct task_struct *__last; \ register unsigned long *__ts1 __asm__ ("r1") = &prev->thread.sp; \ register unsigned long *__ts2 __asm__ ("r2") = &prev->thread.pc; \ register unsigned long *__ts4 __asm__ ("r4") = (unsigned long *)prev; \ diff --git a/include/linux/sched.h b/include/linux/sched.h index 8ebddba4448d..c2797f04d931 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -184,11 +184,11 @@ extern unsigned long weighted_cpuload(const int cpu); extern rwlock_t tasklist_lock; extern spinlock_t mmlist_lock; -typedef struct task_struct task_t; +struct task_struct; extern void sched_init(void); extern void sched_init_smp(void); -extern void init_idle(task_t *idle, int cpu); +extern void init_idle(struct task_struct *idle, int cpu); extern cpumask_t nohz_cpu_mask; @@ -383,7 +383,7 @@ struct signal_struct { wait_queue_head_t wait_chldexit; /* for wait4() */ /* current thread group signal load-balancing target: */ - task_t *curr_target; + struct task_struct *curr_target; /* shared signal handling: */ struct sigpending shared_pending; @@ -699,7 +699,7 @@ extern int groups_search(struct group_info *group_info, gid_t grp); ((gi)->blocks[(i)/NGROUPS_PER_BLOCK][(i)%NGROUPS_PER_BLOCK]) #ifdef ARCH_HAS_PREFETCH_SWITCH_STACK -extern void prefetch_stack(struct task_struct*); +extern void prefetch_stack(struct task_struct *t); #else static inline void prefetch_stack(struct task_struct *t) { } #endif @@ -1031,9 +1031,9 @@ static inline void put_task_struct(struct task_struct *t) #define used_math() tsk_used_math(current) #ifdef CONFIG_SMP -extern int set_cpus_allowed(task_t *p, cpumask_t new_mask); +extern int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask); #else -static inline int set_cpus_allowed(task_t *p, cpumask_t new_mask) +static inline int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask) { if (!cpu_isset(0, new_mask)) return -EINVAL; @@ -1042,7 +1042,8 @@ static inline int set_cpus_allowed(task_t *p, cpumask_t new_mask) #endif extern unsigned long long sched_clock(void); -extern unsigned long long current_sched_time(const task_t *current_task); +extern unsigned long long +current_sched_time(const struct task_struct *current_task); /* sched_exec is called by processes performing an exec */ #ifdef CONFIG_SMP @@ -1060,27 +1061,27 @@ static inline void idle_task_exit(void) {} extern void sched_idle_next(void); #ifdef CONFIG_RT_MUTEXES -extern int rt_mutex_getprio(task_t *p); -extern void rt_mutex_setprio(task_t *p, int prio); -extern void rt_mutex_adjust_pi(task_t *p); +extern int rt_mutex_getprio(struct task_struct *p); +extern void rt_mutex_setprio(struct task_struct *p, int prio); +extern void rt_mutex_adjust_pi(struct task_struct *p); #else -static inline int rt_mutex_getprio(task_t *p) +static inline int rt_mutex_getprio(struct task_struct *p) { return p->normal_prio; } # define rt_mutex_adjust_pi(p) do { } while (0) #endif -extern void set_user_nice(task_t *p, long nice); -extern int task_prio(const task_t *p); -extern int task_nice(const task_t *p); -extern int can_nice(const task_t *p, const int nice); -extern int task_curr(const task_t *p); +extern void set_user_nice(struct task_struct *p, long nice); +extern int task_prio(const struct task_struct *p); +extern int task_nice(const struct task_struct *p); +extern int can_nice(const struct task_struct *p, const int nice); +extern int task_curr(const struct task_struct *p); extern int idle_cpu(int cpu); extern int sched_setscheduler(struct task_struct *, int, struct sched_param *); -extern task_t *idle_task(int cpu); -extern task_t *curr_task(int cpu); -extern void set_curr_task(int cpu, task_t *p); +extern struct task_struct *idle_task(int cpu); +extern struct task_struct *curr_task(int cpu); +extern void set_curr_task(int cpu, struct task_struct *p); void yield(void); @@ -1137,8 +1138,8 @@ extern void FASTCALL(wake_up_new_task(struct task_struct * tsk, #else static inline void kick_process(struct task_struct *tsk) { } #endif -extern void FASTCALL(sched_fork(task_t * p, int clone_flags)); -extern void FASTCALL(sched_exit(task_t * p)); +extern void FASTCALL(sched_fork(struct task_struct * p, int clone_flags)); +extern void FASTCALL(sched_exit(struct task_struct * p)); extern int in_group_p(gid_t); extern int in_egroup_p(gid_t); @@ -1243,17 +1244,17 @@ extern NORET_TYPE void do_group_exit(int); extern void daemonize(const char *, ...); extern int allow_signal(int); extern int disallow_signal(int); -extern task_t *child_reaper; +extern struct task_struct *child_reaper; extern int do_execve(char *, char __user * __user *, char __user * __user *, struct pt_regs *); extern long do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long, int __user *, int __user *); -task_t *fork_idle(int); +struct task_struct *fork_idle(int); extern void set_task_comm(struct task_struct *tsk, char *from); extern void get_task_comm(char *to, struct task_struct *tsk); #ifdef CONFIG_SMP -extern void wait_task_inactive(task_t * p); +extern void wait_task_inactive(struct task_struct * p); #else #define wait_task_inactive(p) do { } while (0) #endif @@ -1279,13 +1280,13 @@ extern void wait_task_inactive(task_t * p); /* de_thread depends on thread_group_leader not being a pid based check */ #define thread_group_leader(p) (p == p->group_leader) -static inline task_t *next_thread(const task_t *p) +static inline struct task_struct *next_thread(const struct task_struct *p) { return list_entry(rcu_dereference(p->thread_group.next), - task_t, thread_group); + struct task_struct, thread_group); } -static inline int thread_group_empty(task_t *p) +static inline int thread_group_empty(struct task_struct *p) { return list_empty(&p->thread_group); } diff --git a/kernel/capability.c b/kernel/capability.c index 1a4d8a40d3f9..c7685ad00a97 100644 --- a/kernel/capability.c +++ b/kernel/capability.c @@ -46,7 +46,7 @@ asmlinkage long sys_capget(cap_user_header_t header, cap_user_data_t dataptr) int ret = 0; pid_t pid; __u32 version; - task_t *target; + struct task_struct *target; struct __user_cap_data_struct data; if (get_user(version, &header->version)) @@ -96,7 +96,7 @@ static inline int cap_set_pg(int pgrp, kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted) { - task_t *g, *target; + struct task_struct *g, *target; int ret = -EPERM; int found = 0; @@ -128,7 +128,7 @@ static inline int cap_set_all(kernel_cap_t *effective, kernel_cap_t *inheritable, kernel_cap_t *permitted) { - task_t *g, *target; + struct task_struct *g, *target; int ret = -EPERM; int found = 0; @@ -172,7 +172,7 @@ asmlinkage long sys_capset(cap_user_header_t header, const cap_user_data_t data) { kernel_cap_t inheritable, permitted, effective; __u32 version; - task_t *target; + struct task_struct *target; int ret; pid_t pid; diff --git a/kernel/exit.c b/kernel/exit.c index c595db14cf25..6664c084783d 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -134,8 +134,8 @@ static void delayed_put_task_struct(struct rcu_head *rhp) void release_task(struct task_struct * p) { + struct task_struct *leader; int zap_leader; - task_t *leader; repeat: atomic_dec(&p->user->processes); write_lock_irq(&tasklist_lock); @@ -209,7 +209,7 @@ out: * * "I ask you, have you ever known what it is to be an orphan?" */ -static int will_become_orphaned_pgrp(int pgrp, task_t *ignored_task) +static int will_become_orphaned_pgrp(int pgrp, struct task_struct *ignored_task) { struct task_struct *p; int ret = 1; @@ -582,7 +582,8 @@ static void exit_mm(struct task_struct * tsk) mmput(mm); } -static inline void choose_new_parent(task_t *p, task_t *reaper) +static inline void +choose_new_parent(struct task_struct *p, struct task_struct *reaper) { /* * Make sure we're not reparenting to ourselves and that @@ -592,7 +593,8 @@ static inline void choose_new_parent(task_t *p, task_t *reaper) p->real_parent = reaper; } -static void reparent_thread(task_t *p, task_t *father, int traced) +static void +reparent_thread(struct task_struct *p, struct task_struct *father, int traced) { /* We don't want people slaying init. */ if (p->exit_signal != -1) @@ -656,8 +658,8 @@ static void reparent_thread(task_t *p, task_t *father, int traced) * group, and if no such member exists, give it to * the global child reaper process (ie "init") */ -static void forget_original_parent(struct task_struct * father, - struct list_head *to_release) +static void +forget_original_parent(struct task_struct *father, struct list_head *to_release) { struct task_struct *p, *reaper = father; struct list_head *_p, *_n; @@ -680,7 +682,7 @@ static void forget_original_parent(struct task_struct * father, */ list_for_each_safe(_p, _n, &father->children) { int ptrace; - p = list_entry(_p,struct task_struct,sibling); + p = list_entry(_p, struct task_struct, sibling); ptrace = p->ptrace; @@ -709,7 +711,7 @@ static void forget_original_parent(struct task_struct * father, list_add(&p->ptrace_list, to_release); } list_for_each_safe(_p, _n, &father->ptrace_children) { - p = list_entry(_p,struct task_struct,ptrace_list); + p = list_entry(_p, struct task_struct, ptrace_list); choose_new_parent(p, reaper); reparent_thread(p, father, 1); } @@ -829,7 +831,7 @@ static void exit_notify(struct task_struct *tsk) list_for_each_safe(_p, _n, &ptrace_dead) { list_del_init(_p); - t = list_entry(_p,struct task_struct,ptrace_list); + t = list_entry(_p, struct task_struct, ptrace_list); release_task(t); } @@ -1010,7 +1012,7 @@ asmlinkage void sys_exit_group(int error_code) do_group_exit((error_code & 0xff) << 8); } -static int eligible_child(pid_t pid, int options, task_t *p) +static int eligible_child(pid_t pid, int options, struct task_struct *p) { if (pid > 0) { if (p->pid != pid) @@ -1051,12 +1053,13 @@ static int eligible_child(pid_t pid, int options, task_t *p) return 1; } -static int wait_noreap_copyout(task_t *p, pid_t pid, uid_t uid, +static int wait_noreap_copyout(struct task_struct *p, pid_t pid, uid_t uid, int why, int status, struct siginfo __user *infop, struct rusage __user *rusagep) { int retval = rusagep ? getrusage(p, RUSAGE_BOTH, rusagep) : 0; + put_task_struct(p); if (!retval) retval = put_user(SIGCHLD, &infop->si_signo); @@ -1081,7 +1084,7 @@ static int wait_noreap_copyout(task_t *p, pid_t pid, uid_t uid, * the lock and this task is uninteresting. If we return nonzero, we have * released the lock and the system call should return. */ -static int wait_task_zombie(task_t *p, int noreap, +static int wait_task_zombie(struct task_struct *p, int noreap, struct siginfo __user *infop, int __user *stat_addr, struct rusage __user *ru) { @@ -1243,8 +1246,8 @@ static int wait_task_zombie(task_t *p, int noreap, * the lock and this task is uninteresting. If we return nonzero, we have * released the lock and the system call should return. */ -static int wait_task_stopped(task_t *p, int delayed_group_leader, int noreap, - struct siginfo __user *infop, +static int wait_task_stopped(struct task_struct *p, int delayed_group_leader, + int noreap, struct siginfo __user *infop, int __user *stat_addr, struct rusage __user *ru) { int retval, exit_code; @@ -1358,7 +1361,7 @@ bail_ref: * the lock and this task is uninteresting. If we return nonzero, we have * released the lock and the system call should return. */ -static int wait_task_continued(task_t *p, int noreap, +static int wait_task_continued(struct task_struct *p, int noreap, struct siginfo __user *infop, int __user *stat_addr, struct rusage __user *ru) { @@ -1444,7 +1447,7 @@ repeat: int ret; list_for_each(_p,&tsk->children) { - p = list_entry(_p,struct task_struct,sibling); + p = list_entry(_p, struct task_struct, sibling); ret = eligible_child(pid, options, p); if (!ret) diff --git a/kernel/fork.c b/kernel/fork.c index 54953d8a6f17..56e4e07e45f7 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -933,13 +933,13 @@ static inline void rt_mutex_init_task(struct task_struct *p) * parts of the process environment (as per the clone * flags). The actual kick-off is left to the caller. */ -static task_t *copy_process(unsigned long clone_flags, - unsigned long stack_start, - struct pt_regs *regs, - unsigned long stack_size, - int __user *parent_tidptr, - int __user *child_tidptr, - int pid) +static struct task_struct *copy_process(unsigned long clone_flags, + unsigned long stack_start, + struct pt_regs *regs, + unsigned long stack_size, + int __user *parent_tidptr, + int __user *child_tidptr, + int pid) { int retval; struct task_struct *p = NULL; @@ -1294,9 +1294,9 @@ struct pt_regs * __devinit __attribute__((weak)) idle_regs(struct pt_regs *regs) return regs; } -task_t * __devinit fork_idle(int cpu) +struct task_struct * __devinit fork_idle(int cpu) { - task_t *task; + struct task_struct *task; struct pt_regs regs; task = copy_process(CLONE_VM, 0, idle_regs(®s), 0, NULL, NULL, 0); diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 617304ce67db..d17766d40dab 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -669,7 +669,7 @@ static int hrtimer_wakeup(struct hrtimer *timer) return HRTIMER_NORESTART; } -void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, task_t *task) +void hrtimer_init_sleeper(struct hrtimer_sleeper *sl, struct task_struct *task) { sl->timer.function = hrtimer_wakeup; sl->task = task; diff --git a/kernel/pid.c b/kernel/pid.c index eeb836b65ca4..93e212f20671 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -218,7 +218,7 @@ struct pid * fastcall find_pid(int nr) return NULL; } -int fastcall attach_pid(task_t *task, enum pid_type type, int nr) +int fastcall attach_pid(struct task_struct *task, enum pid_type type, int nr) { struct pid_link *link; struct pid *pid; @@ -233,7 +233,7 @@ int fastcall attach_pid(task_t *task, enum pid_type type, int nr) return 0; } -void fastcall detach_pid(task_t *task, enum pid_type type) +void fastcall detach_pid(struct task_struct *task, enum pid_type type) { struct pid_link *link; struct pid *pid; @@ -267,7 +267,7 @@ struct task_struct * fastcall pid_task(struct pid *pid, enum pid_type type) /* * Must be called under rcu_read_lock() or with tasklist_lock read-held. */ -task_t *find_task_by_pid_type(int type, int nr) +struct task_struct *find_task_by_pid_type(int type, int nr) { return pid_task(find_pid(nr), type); } diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 335c5b932e14..9a111f70145c 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -28,7 +28,7 @@ * * Must be called with the tasklist lock write-held. */ -void __ptrace_link(task_t *child, task_t *new_parent) +void __ptrace_link(struct task_struct *child, struct task_struct *new_parent) { BUG_ON(!list_empty(&child->ptrace_list)); if (child->parent == new_parent) @@ -46,7 +46,7 @@ void __ptrace_link(task_t *child, task_t *new_parent) * TASK_TRACED, resume it now. * Requires that irqs be disabled. */ -void ptrace_untrace(task_t *child) +void ptrace_untrace(struct task_struct *child) { spin_lock(&child->sighand->siglock); if (child->state == TASK_TRACED) { @@ -65,7 +65,7 @@ void ptrace_untrace(task_t *child) * * Must be called with the tasklist lock write-held. */ -void __ptrace_unlink(task_t *child) +void __ptrace_unlink(struct task_struct *child) { BUG_ON(!child->ptrace); diff --git a/kernel/rtmutex-debug.c b/kernel/rtmutex-debug.c index 353a853bc390..0c1faa950af7 100644 --- a/kernel/rtmutex-debug.c +++ b/kernel/rtmutex-debug.c @@ -96,7 +96,7 @@ void deadlock_trace_off(void) rt_trace_on = 0; } -static void printk_task(task_t *p) +static void printk_task(struct task_struct *p) { if (p) printk("%16s:%5d [%p, %3d]", p->comm, p->pid, p, p->prio); @@ -231,7 +231,8 @@ void debug_rt_mutex_init(struct rt_mutex *lock, const char *name) lock->name = name; } -void rt_mutex_deadlock_account_lock(struct rt_mutex *lock, task_t *task) +void +rt_mutex_deadlock_account_lock(struct rt_mutex *lock, struct task_struct *task) { } diff --git a/kernel/rtmutex-tester.c b/kernel/rtmutex-tester.c index e82c2f848249..494dac872a13 100644 --- a/kernel/rtmutex-tester.c +++ b/kernel/rtmutex-tester.c @@ -33,7 +33,7 @@ struct test_thread_data { }; static struct test_thread_data thread_data[MAX_RT_TEST_THREADS]; -static task_t *threads[MAX_RT_TEST_THREADS]; +static struct task_struct *threads[MAX_RT_TEST_THREADS]; static struct rt_mutex mutexes[MAX_RT_TEST_MUTEXES]; enum test_opcodes { @@ -361,8 +361,8 @@ static ssize_t sysfs_test_command(struct sys_device *dev, const char *buf, static ssize_t sysfs_test_status(struct sys_device *dev, char *buf) { struct test_thread_data *td; + struct task_struct *tsk; char *curr = buf; - task_t *tsk; int i; td = container_of(dev, struct test_thread_data, sysdev); diff --git a/kernel/rtmutex.c b/kernel/rtmutex.c index 91b699aa658b..d2ef13b485e7 100644 --- a/kernel/rtmutex.c +++ b/kernel/rtmutex.c @@ -157,7 +157,7 @@ int max_lock_depth = 1024; * Decreases task's usage by one - may thus free the task. * Returns 0 or -EDEADLK. */ -static int rt_mutex_adjust_prio_chain(task_t *task, +static int rt_mutex_adjust_prio_chain(struct task_struct *task, int deadlock_detect, struct rt_mutex *orig_lock, struct rt_mutex_waiter *orig_waiter, @@ -282,6 +282,7 @@ static int rt_mutex_adjust_prio_chain(task_t *task, spin_unlock_irqrestore(&task->pi_lock, flags); out_put_task: put_task_struct(task); + return ret; } @@ -403,10 +404,10 @@ static int task_blocks_on_rt_mutex(struct rt_mutex *lock, struct rt_mutex_waiter *waiter, int detect_deadlock) { + struct task_struct *owner = rt_mutex_owner(lock); struct rt_mutex_waiter *top_waiter = waiter; - task_t *owner = rt_mutex_owner(lock); - int boost = 0, res; unsigned long flags; + int boost = 0, res; spin_lock_irqsave(¤t->pi_lock, flags); __rt_mutex_adjust_prio(current); @@ -527,9 +528,9 @@ static void remove_waiter(struct rt_mutex *lock, struct rt_mutex_waiter *waiter) { int first = (waiter == rt_mutex_top_waiter(lock)); - int boost = 0; - task_t *owner = rt_mutex_owner(lock); + struct task_struct *owner = rt_mutex_owner(lock); unsigned long flags; + int boost = 0; spin_lock_irqsave(¤t->pi_lock, flags); plist_del(&waiter->list_entry, &lock->wait_list); diff --git a/kernel/sched.c b/kernel/sched.c index b0326141f841..021b31219516 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -179,7 +179,7 @@ static unsigned int static_prio_timeslice(int static_prio) return SCALE_PRIO(DEF_TIMESLICE, static_prio); } -static inline unsigned int task_timeslice(task_t *p) +static inline unsigned int task_timeslice(struct task_struct *p) { return static_prio_timeslice(p->static_prio); } @@ -227,7 +227,7 @@ struct runqueue { unsigned long expired_timestamp; unsigned long long timestamp_last_tick; - task_t *curr, *idle; + struct task_struct *curr, *idle; struct mm_struct *prev_mm; prio_array_t *active, *expired, arrays[2]; int best_expired_prio; @@ -240,7 +240,7 @@ struct runqueue { int active_balance; int push_cpu; - task_t *migration_thread; + struct task_struct *migration_thread; struct list_head migration_queue; #endif @@ -291,16 +291,16 @@ static DEFINE_PER_CPU(struct runqueue, runqueues); #endif #ifndef __ARCH_WANT_UNLOCKED_CTXSW -static inline int task_running(runqueue_t *rq, task_t *p) +static inline int task_running(runqueue_t *rq, struct task_struct *p) { return rq->curr == p; } -static inline void prepare_lock_switch(runqueue_t *rq, task_t *next) +static inline void prepare_lock_switch(runqueue_t *rq, struct task_struct *next) { } -static inline void finish_lock_switch(runqueue_t *rq, task_t *prev) +static inline void finish_lock_switch(runqueue_t *rq, struct task_struct *prev) { #ifdef CONFIG_DEBUG_SPINLOCK /* this is a valid case when another task releases the spinlock */ @@ -317,7 +317,7 @@ static inline void finish_lock_switch(runqueue_t *rq, task_t *prev) } #else /* __ARCH_WANT_UNLOCKED_CTXSW */ -static inline int task_running(runqueue_t *rq, task_t *p) +static inline int task_running(runqueue_t *rq, struct task_struct *p) { #ifdef CONFIG_SMP return p->oncpu; @@ -326,7 +326,7 @@ static inline int task_running(runqueue_t *rq, task_t *p) #endif } -static inline void prepare_lock_switch(runqueue_t *rq, task_t *next) +static inline void prepare_lock_switch(runqueue_t *rq, struct task_struct *next) { #ifdef CONFIG_SMP /* @@ -343,7 +343,7 @@ static inline void prepare_lock_switch(runqueue_t *rq, task_t *next) #endif } -static inline void finish_lock_switch(runqueue_t *rq, task_t *prev) +static inline void finish_lock_switch(runqueue_t *rq, struct task_struct *prev) { #ifdef CONFIG_SMP /* @@ -364,7 +364,7 @@ static inline void finish_lock_switch(runqueue_t *rq, task_t *prev) * __task_rq_lock - lock the runqueue a given task resides on. * Must be called interrupts disabled. */ -static inline runqueue_t *__task_rq_lock(task_t *p) +static inline runqueue_t *__task_rq_lock(struct task_struct *p) __acquires(rq->lock) { struct runqueue *rq; @@ -384,7 +384,7 @@ repeat_lock_task: * interrupts. Note the ordering: we can safely lookup the task_rq without * explicitly disabling preemption. */ -static runqueue_t *task_rq_lock(task_t *p, unsigned long *flags) +static runqueue_t *task_rq_lock(struct task_struct *p, unsigned long *flags) __acquires(rq->lock) { struct runqueue *rq; @@ -541,7 +541,7 @@ static inline runqueue_t *this_rq_lock(void) * long it was from the *first* time it was queued to the time that it * finally hit a cpu. */ -static inline void sched_info_dequeued(task_t *t) +static inline void sched_info_dequeued(struct task_struct *t) { t->sched_info.last_queued = 0; } @@ -551,7 +551,7 @@ static inline void sched_info_dequeued(task_t *t) * long it was waiting to run. We also note when it began so that we * can keep stats on how long its timeslice is. */ -static void sched_info_arrive(task_t *t) +static void sched_info_arrive(struct task_struct *t) { unsigned long now = jiffies, diff = 0; struct runqueue *rq = task_rq(t); @@ -585,7 +585,7 @@ static void sched_info_arrive(task_t *t) * the timestamp if it is already not set. It's assumed that * sched_info_dequeued() will clear that stamp when appropriate. */ -static inline void sched_info_queued(task_t *t) +static inline void sched_info_queued(struct task_struct *t) { if (!t->sched_info.last_queued) t->sched_info.last_queued = jiffies; @@ -595,7 +595,7 @@ static inline void sched_info_queued(task_t *t) * Called when a process ceases being the active-running process, either * voluntarily or involuntarily. Now we can calculate how long we ran. */ -static inline void sched_info_depart(task_t *t) +static inline void sched_info_depart(struct task_struct *t) { struct runqueue *rq = task_rq(t); unsigned long diff = jiffies - t->sched_info.last_arrival; @@ -611,7 +611,8 @@ static inline void sched_info_depart(task_t *t) * their time slice. (This may also be called when switching to or from * the idle task.) We are only called when prev != next. */ -static inline void sched_info_switch(task_t *prev, task_t *next) +static inline void +sched_info_switch(struct task_struct *prev, struct task_struct *next) { struct runqueue *rq = task_rq(prev); @@ -683,7 +684,7 @@ static inline void enqueue_task_head(struct task_struct *p, prio_array_t *array) * Both properties are important to certain workloads. */ -static inline int __normal_prio(task_t *p) +static inline int __normal_prio(struct task_struct *p) { int bonus, prio; @@ -719,7 +720,7 @@ static inline int __normal_prio(task_t *p) #define RTPRIO_TO_LOAD_WEIGHT(rp) \ (PRIO_TO_LOAD_WEIGHT(MAX_RT_PRIO) + LOAD_WEIGHT(rp)) -static void set_load_weight(task_t *p) +static void set_load_weight(struct task_struct *p) { if (has_rt_policy(p)) { #ifdef CONFIG_SMP @@ -737,23 +738,25 @@ static void set_load_weight(task_t *p) p->load_weight = PRIO_TO_LOAD_WEIGHT(p->static_prio); } -static inline void inc_raw_weighted_load(runqueue_t *rq, const task_t *p) +static inline void +inc_raw_weighted_load(runqueue_t *rq, const struct task_struct *p) { rq->raw_weighted_load += p->load_weight; } -static inline void dec_raw_weighted_load(runqueue_t *rq, const task_t *p) +static inline void +dec_raw_weighted_load(runqueue_t *rq, const struct task_struct *p) { rq->raw_weighted_load -= p->load_weight; } -static inline void inc_nr_running(task_t *p, runqueue_t *rq) +static inline void inc_nr_running(struct task_struct *p, runqueue_t *rq) { rq->nr_running++; inc_raw_weighted_load(rq, p); } -static inline void dec_nr_running(task_t *p, runqueue_t *rq) +static inline void dec_nr_running(struct task_struct *p, runqueue_t *rq) { rq->nr_running--; dec_raw_weighted_load(rq, p); @@ -766,7 +769,7 @@ static inline void dec_nr_running(task_t *p, runqueue_t *rq) * setprio syscalls, and whenever the interactivity * estimator recalculates. */ -static inline int normal_prio(task_t *p) +static inline int normal_prio(struct task_struct *p) { int prio; @@ -784,7 +787,7 @@ static inline int normal_prio(task_t *p) * interactivity modifiers. Will be RT if the task got * RT-boosted. If not then it returns p->normal_prio. */ -static int effective_prio(task_t *p) +static int effective_prio(struct task_struct *p) { p->normal_prio = normal_prio(p); /* @@ -800,7 +803,7 @@ static int effective_prio(task_t *p) /* * __activate_task - move a task to the runqueue. */ -static void __activate_task(task_t *p, runqueue_t *rq) +static void __activate_task(struct task_struct *p, runqueue_t *rq) { prio_array_t *target = rq->active; @@ -813,7 +816,7 @@ static void __activate_task(task_t *p, runqueue_t *rq) /* * __activate_idle_task - move idle task to the _front_ of runqueue. */ -static inline void __activate_idle_task(task_t *p, runqueue_t *rq) +static inline void __activate_idle_task(struct task_struct *p, runqueue_t *rq) { enqueue_task_head(p, rq->active); inc_nr_running(p, rq); @@ -823,7 +826,7 @@ static inline void __activate_idle_task(task_t *p, runqueue_t *rq) * Recalculate p->normal_prio and p->prio after having slept, * updating the sleep-average too: */ -static int recalc_task_prio(task_t *p, unsigned long long now) +static int recalc_task_prio(struct task_struct *p, unsigned long long now) { /* Caller must always ensure 'now >= p->timestamp' */ unsigned long sleep_time = now - p->timestamp; @@ -895,7 +898,7 @@ static int recalc_task_prio(task_t *p, unsigned long long now) * Update all the scheduling statistics stuff. (sleep average * calculation, priority modifiers, etc.) */ -static void activate_task(task_t *p, runqueue_t *rq, int local) +static void activate_task(struct task_struct *p, runqueue_t *rq, int local) { unsigned long long now; @@ -962,7 +965,7 @@ static void deactivate_task(struct task_struct *p, runqueue_t *rq) #define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG) #endif -static void resched_task(task_t *p) +static void resched_task(struct task_struct *p) { int cpu; @@ -983,7 +986,7 @@ static void resched_task(task_t *p) smp_send_reschedule(cpu); } #else -static inline void resched_task(task_t *p) +static inline void resched_task(struct task_struct *p) { assert_spin_locked(&task_rq(p)->lock); set_tsk_need_resched(p); @@ -994,7 +997,7 @@ static inline void resched_task(task_t *p) * task_curr - is this task currently executing on a CPU? * @p: the task in question. */ -inline int task_curr(const task_t *p) +inline int task_curr(const struct task_struct *p) { return cpu_curr(task_cpu(p)) == p; } @@ -1009,7 +1012,7 @@ unsigned long weighted_cpuload(const int cpu) typedef struct { struct list_head list; - task_t *task; + struct task_struct *task; int dest_cpu; struct completion done; @@ -1019,7 +1022,8 @@ typedef struct { * The task's runqueue lock must be held. * Returns true if you have to wait for migration thread. */ -static int migrate_task(task_t *p, int dest_cpu, migration_req_t *req) +static int +migrate_task(struct task_struct *p, int dest_cpu, migration_req_t *req) { runqueue_t *rq = task_rq(p); @@ -1049,7 +1053,7 @@ static int migrate_task(task_t *p, int dest_cpu, migration_req_t *req) * smp_call_function() if an IPI is sent by the same process we are * waiting to become inactive. */ -void wait_task_inactive(task_t *p) +void wait_task_inactive(struct task_struct *p) { unsigned long flags; runqueue_t *rq; @@ -1083,7 +1087,7 @@ repeat: * to another CPU then no harm is done and the purpose has been * achieved as well. */ -void kick_process(task_t *p) +void kick_process(struct task_struct *p) { int cpu; @@ -1286,7 +1290,7 @@ nextlevel: * Returns the CPU we should wake onto. */ #if defined(ARCH_HAS_SCHED_WAKE_IDLE) -static int wake_idle(int cpu, task_t *p) +static int wake_idle(int cpu, struct task_struct *p) { cpumask_t tmp; struct sched_domain *sd; @@ -1309,7 +1313,7 @@ static int wake_idle(int cpu, task_t *p) return cpu; } #else -static inline int wake_idle(int cpu, task_t *p) +static inline int wake_idle(int cpu, struct task_struct *p) { return cpu; } @@ -1329,7 +1333,7 @@ static inline int wake_idle(int cpu, task_t *p) * * returns failure only if the task is already active. */ -static int try_to_wake_up(task_t *p, unsigned int state, int sync) +static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync) { int cpu, this_cpu, success = 0; unsigned long flags; @@ -1487,14 +1491,14 @@ out: return success; } -int fastcall wake_up_process(task_t *p) +int fastcall wake_up_process(struct task_struct *p) { return try_to_wake_up(p, TASK_STOPPED | TASK_TRACED | TASK_INTERRUPTIBLE | TASK_UNINTERRUPTIBLE, 0); } EXPORT_SYMBOL(wake_up_process); -int fastcall wake_up_state(task_t *p, unsigned int state) +int fastcall wake_up_state(struct task_struct *p, unsigned int state) { return try_to_wake_up(p, state, 0); } @@ -1503,7 +1507,7 @@ int fastcall wake_up_state(task_t *p, unsigned int state) * Perform scheduler related setup for a newly forked process p. * p is forked by current. */ -void fastcall sched_fork(task_t *p, int clone_flags) +void fastcall sched_fork(struct task_struct *p, int clone_flags) { int cpu = get_cpu(); @@ -1571,7 +1575,7 @@ void fastcall sched_fork(task_t *p, int clone_flags) * that must be done for every newly created context, then puts the task * on the runqueue and wakes it. */ -void fastcall wake_up_new_task(task_t *p, unsigned long clone_flags) +void fastcall wake_up_new_task(struct task_struct *p, unsigned long clone_flags) { unsigned long flags; int this_cpu, cpu; @@ -1655,7 +1659,7 @@ void fastcall wake_up_new_task(task_t *p, unsigned long clone_flags) * artificially, because any timeslice recovered here * was given away by the parent in the first place.) */ -void fastcall sched_exit(task_t *p) +void fastcall sched_exit(struct task_struct *p) { unsigned long flags; runqueue_t *rq; @@ -1689,7 +1693,7 @@ void fastcall sched_exit(task_t *p) * prepare_task_switch sets up locking and calls architecture specific * hooks. */ -static inline void prepare_task_switch(runqueue_t *rq, task_t *next) +static inline void prepare_task_switch(runqueue_t *rq, struct task_struct *next) { prepare_lock_switch(rq, next); prepare_arch_switch(next); @@ -1710,7 +1714,7 @@ static inline void prepare_task_switch(runqueue_t *rq, task_t *next) * with the lock held can cause deadlocks; see schedule() for * details.) */ -static inline void finish_task_switch(runqueue_t *rq, task_t *prev) +static inline void finish_task_switch(runqueue_t *rq, struct task_struct *prev) __releases(rq->lock) { struct mm_struct *mm = rq->prev_mm; @@ -1748,7 +1752,7 @@ static inline void finish_task_switch(runqueue_t *rq, task_t *prev) * schedule_tail - first thing a freshly forked thread must call. * @prev: the thread we just switched away from. */ -asmlinkage void schedule_tail(task_t *prev) +asmlinkage void schedule_tail(struct task_struct *prev) __releases(rq->lock) { runqueue_t *rq = this_rq(); @@ -1765,8 +1769,9 @@ asmlinkage void schedule_tail(task_t *prev) * context_switch - switch to the new MM and the new * thread's register state. */ -static inline -task_t * context_switch(runqueue_t *rq, task_t *prev, task_t *next) +static inline struct task_struct * +context_switch(runqueue_t *rq, struct task_struct *prev, + struct task_struct *next) { struct mm_struct *mm = next->mm; struct mm_struct *oldmm = prev->active_mm; @@ -1937,7 +1942,7 @@ static void double_lock_balance(runqueue_t *this_rq, runqueue_t *busiest) * allow dest_cpu, which will force the cpu onto dest_cpu. Then * the cpu_allowed mask is restored. */ -static void sched_migrate_task(task_t *p, int dest_cpu) +static void sched_migrate_task(struct task_struct *p, int dest_cpu) { migration_req_t req; runqueue_t *rq; @@ -1952,11 +1957,13 @@ static void sched_migrate_task(task_t *p, int dest_cpu) if (migrate_task(p, dest_cpu, &req)) { /* Need to wait for migration thread (might exit: take ref). */ struct task_struct *mt = rq->migration_thread; + get_task_struct(mt); task_rq_unlock(rq, &flags); wake_up_process(mt); put_task_struct(mt); wait_for_completion(&req.done); + return; } out: @@ -1980,9 +1987,9 @@ void sched_exec(void) * pull_task - move a task from a remote runqueue to the local runqueue. * Both runqueues must be locked. */ -static -void pull_task(runqueue_t *src_rq, prio_array_t *src_array, task_t *p, - runqueue_t *this_rq, prio_array_t *this_array, int this_cpu) +static void pull_task(runqueue_t *src_rq, prio_array_t *src_array, + struct task_struct *p, runqueue_t *this_rq, + prio_array_t *this_array, int this_cpu) { dequeue_task(p, src_array); dec_nr_running(p, src_rq); @@ -2003,7 +2010,7 @@ void pull_task(runqueue_t *src_rq, prio_array_t *src_array, task_t *p, * can_migrate_task - may task p from runqueue rq be migrated to this_cpu? */ static -int can_migrate_task(task_t *p, runqueue_t *rq, int this_cpu, +int can_migrate_task(struct task_struct *p, runqueue_t *rq, int this_cpu, struct sched_domain *sd, enum idle_type idle, int *all_pinned) { @@ -2052,8 +2059,8 @@ static int move_tasks(runqueue_t *this_rq, int this_cpu, runqueue_t *busiest, best_prio_seen, skip_for_load; prio_array_t *array, *dst_array; struct list_head *head, *curr; + struct task_struct *tmp; long rem_load_move; - task_t *tmp; if (max_nr_move == 0 || max_load_move == 0) goto out; @@ -2105,7 +2112,7 @@ skip_bitmap: head = array->queue + idx; curr = head->prev; skip_queue: - tmp = list_entry(curr, task_t, run_list); + tmp = list_entry(curr, struct task_struct, run_list); curr = curr->prev; @@ -2819,7 +2826,7 @@ EXPORT_PER_CPU_SYMBOL(kstat); * Bank in p->sched_time the ns elapsed since the last tick or switch. */ static inline void -update_cpu_clock(task_t *p, runqueue_t *rq, unsigned long long now) +update_cpu_clock(struct task_struct *p, runqueue_t *rq, unsigned long long now) { p->sched_time += now - max(p->timestamp, rq->timestamp_last_tick); } @@ -2828,7 +2835,7 @@ update_cpu_clock(task_t *p, runqueue_t *rq, unsigned long long now) * Return current->sched_time plus any more ns on the sched_clock * that have not yet been banked. */ -unsigned long long current_sched_time(const task_t *p) +unsigned long long current_sched_time(const struct task_struct *p) { unsigned long long ns; unsigned long flags; @@ -2945,9 +2952,9 @@ void account_steal_time(struct task_struct *p, cputime_t steal) void scheduler_tick(void) { unsigned long long now = sched_clock(); + struct task_struct *p = current; int cpu = smp_processor_id(); runqueue_t *rq = this_rq(); - task_t *p = current; update_cpu_clock(p, rq, now); @@ -3079,7 +3086,8 @@ static void wake_sleeping_dependent(int this_cpu) * utilize, if another task runs on a sibling. This models the * slowdown effect of other tasks running on siblings: */ -static inline unsigned long smt_slice(task_t *p, struct sched_domain *sd) +static inline unsigned long +smt_slice(struct task_struct *p, struct sched_domain *sd) { return p->time_slice * (100 - sd->per_cpu_gain) / 100; } @@ -3090,7 +3098,8 @@ static inline unsigned long smt_slice(task_t *p, struct sched_domain *sd) * acquire their lock. As we only trylock the normal locking order does not * need to be obeyed. */ -static int dependent_sleeper(int this_cpu, runqueue_t *this_rq, task_t *p) +static int +dependent_sleeper(int this_cpu, runqueue_t *this_rq, struct task_struct *p) { struct sched_domain *tmp, *sd = NULL; int ret = 0, i; @@ -3110,8 +3119,8 @@ static int dependent_sleeper(int this_cpu, runqueue_t *this_rq, task_t *p) return 0; for_each_cpu_mask(i, sd->span) { + struct task_struct *smt_curr; runqueue_t *smt_rq; - task_t *smt_curr; if (i == this_cpu) continue; @@ -3157,7 +3166,7 @@ static inline void wake_sleeping_dependent(int this_cpu) { } static inline int -dependent_sleeper(int this_cpu, runqueue_t *this_rq, task_t *p) +dependent_sleeper(int this_cpu, runqueue_t *this_rq, struct task_struct *p) { return 0; } @@ -3211,11 +3220,11 @@ static inline int interactive_sleep(enum sleep_type sleep_type) */ asmlinkage void __sched schedule(void) { + struct task_struct *prev, *next; struct list_head *queue; unsigned long long now; unsigned long run_time; int cpu, idx, new_prio; - task_t *prev, *next; prio_array_t *array; long *switch_count; runqueue_t *rq; @@ -3308,7 +3317,7 @@ need_resched_nonpreemptible: idx = sched_find_first_bit(array->bitmap); queue = array->queue + idx; - next = list_entry(queue->next, task_t, run_list); + next = list_entry(queue->next, struct task_struct, run_list); if (!rt_task(next) && interactive_sleep(next->sleep_type)) { unsigned long long delta = now - next->timestamp; @@ -3776,7 +3785,7 @@ EXPORT_SYMBOL(sleep_on_timeout); * * Used by the rt_mutex code to implement priority inheritance logic. */ -void rt_mutex_setprio(task_t *p, int prio) +void rt_mutex_setprio(struct task_struct *p, int prio) { unsigned long flags; prio_array_t *array; @@ -3817,7 +3826,7 @@ void rt_mutex_setprio(task_t *p, int prio) #endif -void set_user_nice(task_t *p, long nice) +void set_user_nice(struct task_struct *p, long nice) { int old_prio, delta; unsigned long flags; @@ -3873,7 +3882,7 @@ EXPORT_SYMBOL(set_user_nice); * @p: task * @nice: nice value */ -int can_nice(const task_t *p, const int nice) +int can_nice(const struct task_struct *p, const int nice) { /* convert nice value [19,-20] to rlimit style value [1,40] */ int nice_rlim = 20 - nice; @@ -3932,7 +3941,7 @@ asmlinkage long sys_nice(int increment) * RT tasks are offset by -200. Normal tasks are centered * around 0, value goes from -16 to +15. */ -int task_prio(const task_t *p) +int task_prio(const struct task_struct *p) { return p->prio - MAX_RT_PRIO; } @@ -3941,7 +3950,7 @@ int task_prio(const task_t *p) * task_nice - return the nice value of a given task. * @p: the task in question. */ -int task_nice(const task_t *p) +int task_nice(const struct task_struct *p) { return TASK_NICE(p); } @@ -3960,7 +3969,7 @@ int idle_cpu(int cpu) * idle_task - return the idle task for a given cpu. * @cpu: the processor in question. */ -task_t *idle_task(int cpu) +struct task_struct *idle_task(int cpu) { return cpu_rq(cpu)->idle; } @@ -3969,7 +3978,7 @@ task_t *idle_task(int cpu) * find_process_by_pid - find a process with a matching PID value. * @pid: the pid in question. */ -static inline task_t *find_process_by_pid(pid_t pid) +static inline struct task_struct *find_process_by_pid(pid_t pid) { return pid ? find_task_by_pid(pid) : current; } @@ -4103,9 +4112,9 @@ EXPORT_SYMBOL_GPL(sched_setscheduler); static int do_sched_setscheduler(pid_t pid, int policy, struct sched_param __user *param) { - int retval; struct sched_param lparam; struct task_struct *p; + int retval; if (!param || pid < 0) return -EINVAL; @@ -4121,6 +4130,7 @@ do_sched_setscheduler(pid_t pid, int policy, struct sched_param __user *param) read_unlock_irq(&tasklist_lock); retval = sched_setscheduler(p, policy, &lparam); put_task_struct(p); + return retval; } @@ -4156,8 +4166,8 @@ asmlinkage long sys_sched_setparam(pid_t pid, struct sched_param __user *param) */ asmlinkage long sys_sched_getscheduler(pid_t pid) { + struct task_struct *p; int retval = -EINVAL; - task_t *p; if (pid < 0) goto out_nounlock; @@ -4184,8 +4194,8 @@ out_nounlock: asmlinkage long sys_sched_getparam(pid_t pid, struct sched_param __user *param) { struct sched_param lp; + struct task_struct *p; int retval = -EINVAL; - task_t *p; if (!param || pid < 0) goto out_nounlock; @@ -4218,9 +4228,9 @@ out_unlock: long sched_setaffinity(pid_t pid, cpumask_t new_mask) { - task_t *p; - int retval; cpumask_t cpus_allowed; + struct task_struct *p; + int retval; lock_cpu_hotplug(); read_lock(&tasklist_lock); @@ -4306,8 +4316,8 @@ cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL; long sched_getaffinity(pid_t pid, cpumask_t *mask) { + struct task_struct *p; int retval; - task_t *p; lock_cpu_hotplug(); read_lock(&tasklist_lock); @@ -4592,9 +4602,9 @@ asmlinkage long sys_sched_get_priority_min(int policy) asmlinkage long sys_sched_rr_get_interval(pid_t pid, struct timespec __user *interval) { + struct task_struct *p; int retval = -EINVAL; struct timespec t; - task_t *p; if (pid < 0) goto out_nounlock; @@ -4641,12 +4651,13 @@ static inline struct task_struct *younger_sibling(struct task_struct *p) return list_entry(p->sibling.next,struct task_struct,sibling); } -static void show_task(task_t *p) +static const char *stat_nam[] = { "R", "S", "D", "T", "t", "Z", "X" }; + +static void show_task(struct task_struct *p) { - task_t *relative; - unsigned state; + struct task_struct *relative; unsigned long free = 0; - static const char *stat_nam[] = { "R", "S", "D", "T", "t", "Z", "X" }; + unsigned state; printk("%-13.13s ", p->comm); state = p->state ? __ffs(p->state) + 1 : 0; @@ -4697,7 +4708,7 @@ static void show_task(task_t *p) void show_state(void) { - task_t *g, *p; + struct task_struct *g, *p; #if (BITS_PER_LONG == 32) printk("\n" @@ -4730,7 +4741,7 @@ void show_state(void) * NOTE: this function does not set the idle thread's NEED_RESCHED * flag, to make booting more robust. */ -void __devinit init_idle(task_t *idle, int cpu) +void __devinit init_idle(struct task_struct *idle, int cpu) { runqueue_t *rq = cpu_rq(cpu); unsigned long flags; @@ -4793,7 +4804,7 @@ cpumask_t nohz_cpu_mask = CPU_MASK_NONE; * task must not exit() & deallocate itself prematurely. The * call is not atomic; no spinlocks may be held. */ -int set_cpus_allowed(task_t *p, cpumask_t new_mask) +int set_cpus_allowed(struct task_struct *p, cpumask_t new_mask) { unsigned long flags; migration_req_t req; @@ -5061,7 +5072,7 @@ void idle_task_exit(void) mmdrop(mm); } -static void migrate_dead(unsigned int dead_cpu, task_t *p) +static void migrate_dead(unsigned int dead_cpu, struct task_struct *p) { struct runqueue *rq = cpu_rq(dead_cpu); @@ -5096,9 +5107,8 @@ static void migrate_dead_tasks(unsigned int dead_cpu) struct list_head *list = &rq->arrays[arr].queue[i]; while (!list_empty(list)) - migrate_dead(dead_cpu, - list_entry(list->next, task_t, - run_list)); + migrate_dead(dead_cpu, list_entry(list->next, + struct task_struct, run_list)); } } } @@ -6801,7 +6811,7 @@ void normalize_rt_tasks(void) * * ONLY VALID WHEN THE WHOLE SYSTEM IS STOPPED! */ -task_t *curr_task(int cpu) +struct task_struct *curr_task(int cpu) { return cpu_curr(cpu); } @@ -6821,7 +6831,7 @@ task_t *curr_task(int cpu) * * ONLY VALID WHEN THE WHOLE SYSTEM IS STOPPED! */ -void set_curr_task(int cpu, task_t *p) +void set_curr_task(int cpu, struct task_struct *p) { cpu_curr(cpu) = p; } diff --git a/kernel/timer.c b/kernel/timer.c index b761898d04c8..396a3c024c2c 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -1368,7 +1368,7 @@ asmlinkage long sys_getegid(void) static void process_timeout(unsigned long __data) { - wake_up_process((task_t *)__data); + wake_up_process((struct task_struct *)__data); } /** diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 59f0b42bd89e..90d2c6001659 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -51,7 +51,7 @@ struct cpu_workqueue_struct { wait_queue_head_t work_done; struct workqueue_struct *wq; - task_t *thread; + struct task_struct *thread; int run_depth; /* Detect run_workqueue() recursion depth */ } ____cacheline_aligned; diff --git a/mm/oom_kill.c b/mm/oom_kill.c index d46ed0f1dc06..b9af136e5cfa 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -225,7 +225,7 @@ static struct task_struct *select_bad_process(unsigned long *ppoints) * CAP_SYS_RAW_IO set, send SIGTERM instead (but it's unlikely that * we select a process with CAP_SYS_RAW_IO set). */ -static void __oom_kill_task(task_t *p, const char *message) +static void __oom_kill_task(struct task_struct *p, const char *message) { if (p->pid == 1) { WARN_ON(1); @@ -255,10 +255,10 @@ static void __oom_kill_task(task_t *p, const char *message) force_sig(SIGKILL, p); } -static int oom_kill_task(task_t *p, const char *message) +static int oom_kill_task(struct task_struct *p, const char *message) { struct mm_struct *mm; - task_t * g, * q; + struct task_struct *g, *q; mm = p->mm; @@ -316,7 +316,7 @@ static int oom_kill_process(struct task_struct *p, unsigned long points, */ void out_of_memory(struct zonelist *zonelist, gfp_t gfp_mask, int order) { - task_t *p; + struct task_struct *p; unsigned long points = 0; if (printk_ratelimit()) { -- cgit v1.2.3