From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/include/linux/posix-timers.h | 141 ++++++++++++++++++++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 kernel/include/linux/posix-timers.h (limited to 'kernel/include/linux/posix-timers.h') diff --git a/kernel/include/linux/posix-timers.h b/kernel/include/linux/posix-timers.h new file mode 100644 index 000000000..907f3fd19 --- /dev/null +++ b/kernel/include/linux/posix-timers.h @@ -0,0 +1,141 @@ +#ifndef _linux_POSIX_TIMERS_H +#define _linux_POSIX_TIMERS_H + +#include +#include +#include +#include +#include + + +static inline unsigned long long cputime_to_expires(cputime_t expires) +{ + return (__force unsigned long long)expires; +} + +static inline cputime_t expires_to_cputime(unsigned long long expires) +{ + return (__force cputime_t)expires; +} + +struct cpu_timer_list { + struct list_head entry; + unsigned long long expires, incr; + struct task_struct *task; + int firing; +}; + +/* + * Bit fields within a clockid: + * + * The most significant 29 bits hold either a pid or a file descriptor. + * + * Bit 2 indicates whether a cpu clock refers to a thread or a process. + * + * Bits 1 and 0 give the type: PROF=0, VIRT=1, SCHED=2, or FD=3. + * + * A clockid is invalid if bits 2, 1, and 0 are all set. + */ +#define CPUCLOCK_PID(clock) ((pid_t) ~((clock) >> 3)) +#define CPUCLOCK_PERTHREAD(clock) \ + (((clock) & (clockid_t) CPUCLOCK_PERTHREAD_MASK) != 0) + +#define CPUCLOCK_PERTHREAD_MASK 4 +#define CPUCLOCK_WHICH(clock) ((clock) & (clockid_t) CPUCLOCK_CLOCK_MASK) +#define CPUCLOCK_CLOCK_MASK 3 +#define CPUCLOCK_PROF 0 +#define CPUCLOCK_VIRT 1 +#define CPUCLOCK_SCHED 2 +#define CPUCLOCK_MAX 3 +#define CLOCKFD CPUCLOCK_MAX +#define CLOCKFD_MASK (CPUCLOCK_PERTHREAD_MASK|CPUCLOCK_CLOCK_MASK) + +#define MAKE_PROCESS_CPUCLOCK(pid, clock) \ + ((~(clockid_t) (pid) << 3) | (clockid_t) (clock)) +#define MAKE_THREAD_CPUCLOCK(tid, clock) \ + MAKE_PROCESS_CPUCLOCK((tid), (clock) | CPUCLOCK_PERTHREAD_MASK) + +#define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD) +#define CLOCKID_TO_FD(clk) ((unsigned int) ~((clk) >> 3)) + +/* POSIX.1b interval timer structure. */ +struct k_itimer { + struct list_head list; /* free/ allocate list */ + struct hlist_node t_hash; + spinlock_t it_lock; + clockid_t it_clock; /* which timer type */ + timer_t it_id; /* timer id */ + int it_overrun; /* overrun on pending signal */ + int it_overrun_last; /* overrun on last delivered signal */ + int it_requeue_pending; /* waiting to requeue this timer */ +#define REQUEUE_PENDING 1 + int it_sigev_notify; /* notify word of sigevent struct */ + struct signal_struct *it_signal; + union { + struct pid *it_pid; /* pid of process to send signal to */ + struct task_struct *it_process; /* for clock_nanosleep */ + }; + struct sigqueue *sigq; /* signal queue entry. */ + union { + struct { + struct hrtimer timer; + ktime_t interval; + } real; + struct cpu_timer_list cpu; + struct { + unsigned int clock; + unsigned int node; + unsigned long incr; + unsigned long expires; + } mmtimer; + struct { + struct alarm alarmtimer; + ktime_t interval; + } alarm; + struct rcu_head rcu; + } it; +}; + +struct k_clock { + int (*clock_getres) (const clockid_t which_clock, struct timespec *tp); + int (*clock_set) (const clockid_t which_clock, + const struct timespec *tp); + int (*clock_get) (const clockid_t which_clock, struct timespec * tp); + int (*clock_adj) (const clockid_t which_clock, struct timex *tx); + int (*timer_create) (struct k_itimer *timer); + int (*nsleep) (const clockid_t which_clock, int flags, + struct timespec *, struct timespec __user *); + long (*nsleep_restart) (struct restart_block *restart_block); + int (*timer_set) (struct k_itimer * timr, int flags, + struct itimerspec * new_setting, + struct itimerspec * old_setting); + int (*timer_del) (struct k_itimer * timr); +#define TIMER_RETRY 1 + void (*timer_get) (struct k_itimer * timr, + struct itimerspec * cur_setting); +}; + +extern struct k_clock clock_posix_cpu; +extern struct k_clock clock_posix_dynamic; + +void posix_timers_register_clock(const clockid_t clock_id, struct k_clock *new_clock); + +/* function to call to trigger timer event */ +int posix_timer_event(struct k_itimer *timr, int si_private); + +void posix_cpu_timer_schedule(struct k_itimer *timer); + +void run_posix_cpu_timers(struct task_struct *task); +void posix_cpu_timers_exit(struct task_struct *task); +void posix_cpu_timers_exit_group(struct task_struct *task); + +bool posix_cpu_timers_can_stop_tick(struct task_struct *tsk); + +void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx, + cputime_t *newval, cputime_t *oldval); + +long clock_nanosleep_restart(struct restart_block *restart_block); + +void update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new); + +#endif -- cgit 1.2.3-korg