4 files changed, 44 insertions, 72 deletions

diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index 3eba43878dcb..bd37078c2d7d 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -43,26 +43,6 @@ enum hrtimer_restart {
 };
 
 /*
- * hrtimer callback modes:
- *
- *      HRTIMER_CB_SOFTIRQ:             Callback must run in softirq context
- *      HRTIMER_CB_IRQSAFE_PERCPU:      Callback must run in hardirq context
- *                                      Special mode for tick emulation and
- *                                      scheduler timer. Such timers are per
- *                                      cpu and not allowed to be migrated on
- *                                      cpu unplug.
- *      HRTIMER_CB_IRQSAFE_UNLOCKED:    Callback should run in hardirq context
- *                                      with timer->base lock unlocked
- *                                      used for timers which call wakeup to
- *                                      avoid lock order problems with rq->lock
- */
-enum hrtimer_cb_mode {
-        HRTIMER_CB_SOFTIRQ,
-        HRTIMER_CB_IRQSAFE_PERCPU,
-        HRTIMER_CB_IRQSAFE_UNLOCKED,
-};
-
-/*
  * Values to track state of the timer
  *
  * Possible states:
@@ -70,7 +50,6 @@ enum hrtimer_cb_mode {
  * 0x00         inactive
  * 0x01         enqueued into rbtree
  * 0x02         callback function running
- * 0x04         callback pending (high resolution mode)
  *
  * Special cases:
  * 0x03         callback function running and enqueued
@@ -92,8 +71,7 @@ enum hrtimer_cb_mode {
 #define HRTIMER_STATE_INACTIVE  0x00
 #define HRTIMER_STATE_ENQUEUED  0x01
 #define HRTIMER_STATE_CALLBACK  0x02
-#define HRTIMER_STATE_PENDING   0x04
-#define HRTIMER_STATE_MIGRATE   0x08
+#define HRTIMER_STATE_MIGRATE   0x04
 
 /**
  * struct hrtimer - the basic hrtimer structure
@@ -109,8 +87,6 @@ enum hrtimer_cb_mode {
  * @function:   timer expiry callback function
  * @base:       pointer to the timer base (per cpu and per clock)
  * @state:      state information (See bit values above)
- * @cb_mode:    high resolution timer feature to select the callback execution
- *               mode
  * @cb_entry:   list head to enqueue an expired timer into the callback list
  * @start_site: timer statistics field to store the site where the timer
  *              was started
@@ -129,7 +105,6 @@ struct hrtimer {
         struct hrtimer_clock_base       *base;
         unsigned long                   state;
         struct list_head                cb_entry;
-        enum hrtimer_cb_mode            cb_mode;
 #ifdef CONFIG_TIMER_STATS
         int                             start_pid;
         void                            *start_site;
@@ -188,15 +163,11 @@ struct hrtimer_clock_base {
  * @check_clocks:       Indictator, when set evaluate time source and clock
  *                      event devices whether high resolution mode can be
  *                      activated.
- * @cb_pending:         Expired timers are moved from the rbtree to this
- *                      list in the timer interrupt. The list is processed
- *                      in the softirq.
  * @nr_events:          Total number of timer interrupt events
  */
 struct hrtimer_cpu_base {
         spinlock_t                      lock;
         struct hrtimer_clock_base       clock_base[HRTIMER_MAX_CLOCK_BASES];
-        struct list_head                cb_pending;
 #ifdef CONFIG_HIGH_RES_TIMERS
         ktime_t                         expires_next;
         int                             hres_active;
@@ -404,8 +375,7 @@ static inline int hrtimer_active(const struct hrtimer *timer)
  */
 static inline int hrtimer_is_queued(struct hrtimer *timer)
 {
-        return timer->state &
-                (HRTIMER_STATE_ENQUEUED | HRTIMER_STATE_PENDING);
+        return timer->state & HRTIMER_STATE_ENQUEUED;
 }
 
 /*
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index f58a0cf8929a..d6210a97a8ca 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -251,9 +251,6 @@ enum
         BLOCK_SOFTIRQ,
         TASKLET_SOFTIRQ,
         SCHED_SOFTIRQ,
-#ifdef CONFIG_HIGH_RES_TIMERS
-        HRTIMER_SOFTIRQ,
-#endif
         RCU_SOFTIRQ,    /* Preferable RCU should always be the last softirq */
 
         NR_SOFTIRQS
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index a7c721355549..4f71bf4e628c 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -45,7 +45,11 @@ struct k_itimer {
         int it_requeue_pending;         /* waiting to requeue this timer */
 #define REQUEUE_PENDING 1
         int it_sigev_notify;            /* notify word of sigevent struct */
-        struct task_struct *it_process; /* process to send signal to */
+        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 {
diff --git a/include/linux/timex.h b/include/linux/timex.h
index 9007313b5b71..998a55d80acf 100644
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -53,47 +53,11 @@
 #ifndef _LINUX_TIMEX_H
 #define _LINUX_TIMEX_H
 
-#include <linux/compiler.h>
 #include <linux/time.h>
 
-#include <asm/param.h>
-
 #define NTP_API         4       /* NTP API version */
 
 /*
- * SHIFT_KG and SHIFT_KF establish the damping of the PLL and are chosen
- * for a slightly underdamped convergence characteristic. SHIFT_KH
- * establishes the damping of the FLL and is chosen by wisdom and black
- * art.
- *
- * MAXTC establishes the maximum time constant of the PLL. With the
- * SHIFT_KG and SHIFT_KF values given and a time constant range from
- * zero to MAXTC, the PLL will converge in 15 minutes to 16 hours,
- * respectively.
- */
-#define SHIFT_PLL       4       /* PLL frequency factor (shift) */
-#define SHIFT_FLL       2       /* FLL frequency factor (shift) */
-#define MAXTC           10      /* maximum time constant (shift) */
-
-/*
- * SHIFT_USEC defines the scaling (shift) of the time_freq and
- * time_tolerance variables, which represent the current frequency
- * offset and maximum frequency tolerance.
- */
-#define SHIFT_USEC 16           /* frequency offset scale (shift) */
-#define PPM_SCALE (NSEC_PER_USEC << (NTP_SCALE_SHIFT - SHIFT_USEC))
-#define PPM_SCALE_INV_SHIFT 19
-#define PPM_SCALE_INV ((1ll << (PPM_SCALE_INV_SHIFT + NTP_SCALE_SHIFT)) / \
-                       PPM_SCALE + 1)
-
-#define MAXPHASE 500000000l     /* max phase error (ns) */
-#define MAXFREQ 500000          /* max frequency error (ns/s) */
-#define MAXFREQ_SCALED ((s64)MAXFREQ << NTP_SCALE_SHIFT)
-#define MINSEC 256              /* min interval between updates (s) */
-#define MAXSEC 2048             /* max interval between updates (s) */
-#define NTP_PHASE_LIMIT ((MAXPHASE / NSEC_PER_USEC) << 5) /* beyond max. dispersion */
-
-/*
  * syscall interface - used (mainly by NTP daemon)
  * to discipline kernel clock oscillator
  */
@@ -199,9 +163,46 @@ struct timex {
 #define TIME_BAD        TIME_ERROR /* bw compat */
 
 #ifdef __KERNEL__
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <linux/param.h>
+
 #include <asm/timex.h>
 
 /*
+ * SHIFT_KG and SHIFT_KF establish the damping of the PLL and are chosen
+ * for a slightly underdamped convergence characteristic. SHIFT_KH
+ * establishes the damping of the FLL and is chosen by wisdom and black
+ * art.
+ *
+ * MAXTC establishes the maximum time constant of the PLL. With the
+ * SHIFT_KG and SHIFT_KF values given and a time constant range from
+ * zero to MAXTC, the PLL will converge in 15 minutes to 16 hours,
+ * respectively.
+ */
+#define SHIFT_PLL       4       /* PLL frequency factor (shift) */
+#define SHIFT_FLL       2       /* FLL frequency factor (shift) */
+#define MAXTC           10      /* maximum time constant (shift) */
+
+/*
+ * SHIFT_USEC defines the scaling (shift) of the time_freq and
+ * time_tolerance variables, which represent the current frequency
+ * offset and maximum frequency tolerance.
+ */
+#define SHIFT_USEC 16           /* frequency offset scale (shift) */
+#define PPM_SCALE (NSEC_PER_USEC << (NTP_SCALE_SHIFT - SHIFT_USEC))
+#define PPM_SCALE_INV_SHIFT 19
+#define PPM_SCALE_INV ((1ll << (PPM_SCALE_INV_SHIFT + NTP_SCALE_SHIFT)) / \
+                       PPM_SCALE + 1)
+
+#define MAXPHASE 500000000l     /* max phase error (ns) */
+#define MAXFREQ 500000          /* max frequency error (ns/s) */
+#define MAXFREQ_SCALED ((s64)MAXFREQ << NTP_SCALE_SHIFT)
+#define MINSEC 256              /* min interval between updates (s) */
+#define MAXSEC 2048             /* max interval between updates (s) */
+#define NTP_PHASE_LIMIT ((MAXPHASE / NSEC_PER_USEC) << 5) /* beyond max. dispersion */
+
+/*
  * kernel variables
  * Note: maximum error = NTP synch distance = dispersion + delay / 2;
  * estimated error = NTP dispersion.