---

yaml --- r: 4968 b: refs/heads/master c: 6b6a93c h: refs/heads/master v: v3
git-mirror · Jul 25, 2005 · 7698809 · 7698809
1 parent bda6e93
commit 7698809
Show file tree

Hide file tree

Showing 20 changed files with 101 additions and 327 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7686ee1ad976efeddf10583f013462c66408ae51
+refs/heads/master: 6b6a93c6876ea1c530d5d3f68e3678093a27fab0
diff --git a/trunk/arch/sparc64/kernel/entry.S b/trunk/arch/sparc64/kernel/entry.S
@@ -1600,11 +1600,11 @@ sys_clone:	flushw
 		ba,pt		%xcc, sparc_do_fork
 		 add		%sp, PTREGS_OFF, %o2
 ret_from_syscall:
-		/* Clear SPARC_FLAG_NEWCHILD, switch_to leaves thread.flags in
-		 * %o7 for us.  Check performance counter stuff too.
+		/* Clear current_thread_info()->new_child, and
+		 * check performance counter stuff too.
 		 */
-		andn		%o7, _TIF_NEWCHILD, %l0
-		stx		%l0, [%g6 + TI_FLAGS]
+		stb		%g0, [%g6 + TI_NEW_CHILD]
+		ldx		[%g6 + TI_FLAGS], %l0
 		call		schedule_tail
 		 mov		%g7, %o0
 		andcc		%l0, _TIF_PERFCTR, %g0
@@ -1720,12 +1720,11 @@ ret_sys_call:
 	/* Check if force_successful_syscall_return()
 	 * was invoked.
 	 */
-	ldx		[%curptr + TI_FLAGS], %l0
-	andcc		%l0, _TIF_SYSCALL_SUCCESS, %g0
-	be,pt		%icc, 1f
-	 andn		%l0, _TIF_SYSCALL_SUCCESS, %l0
+	ldub		[%curptr + TI_SYS_NOERROR], %l0
+	brz,pt		%l0, 1f
+	 nop
 	ba,pt		%xcc, 80f
-	 stx		%l0, [%curptr + TI_FLAGS]
+	 stb		%g0, [%curptr + TI_SYS_NOERROR]
 
 1:
 	cmp		%o0, -ERESTART_RESTARTBLOCK

diff --git a/trunk/arch/sparc64/kernel/irq.c b/trunk/arch/sparc64/kernel/irq.c
@@ -782,8 +782,14 @@ static void distribute_irqs(void)
 }
 #endif
 
+struct sun5_timer {
+	u64	count0;
+	u64	limit0;
+	u64	count1;
+	u64	limit1;
+};
 
-struct sun5_timer *prom_timers;
+static struct sun5_timer *prom_timers;
 static u64 prom_limit0, prom_limit1;
 
 static void map_prom_timers(void)
@@ -839,18 +845,6 @@ static void kill_prom_timer(void)
 	: "g1", "g2");
 }
 
-void enable_prom_timer(void)
-{
-	if (!prom_timers)
-		return;
-
-	/* Set it to whatever was there before. */
-	prom_timers->limit1 = prom_limit1;
-	prom_timers->count1 = 0;
-	prom_timers->limit0 = prom_limit0;
-	prom_timers->count0 = 0;
-}
-
 void init_irqwork_curcpu(void)
 {
 	register struct irq_work_struct *workp asm("o2");

diff --git a/trunk/arch/sparc64/kernel/process.c b/trunk/arch/sparc64/kernel/process.c
@@ -621,8 +621,8 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp,
 	memcpy(child_trap_frame, (((struct sparc_stackf *)regs)-1), (TRACEREG_SZ+STACKFRAME_SZ));
 
 	t->flags = (t->flags & ~((0xffUL << TI_FLAG_CWP_SHIFT) | (0xffUL << TI_FLAG_CURRENT_DS_SHIFT))) |
-		_TIF_NEWCHILD |
 		(((regs->tstate + 1) & TSTATE_CWP) << TI_FLAG_CWP_SHIFT);
+	t->new_child = 1;
 	t->ksp = ((unsigned long) child_trap_frame) - STACK_BIAS;
 	t->kregs = (struct pt_regs *)(child_trap_frame+sizeof(struct sparc_stackf));
 	t->fpsaved[0] = 0;

diff --git a/trunk/arch/sparc64/kernel/smp.c b/trunk/arch/sparc64/kernel/smp.c
@@ -137,7 +137,7 @@ void __init smp_callin(void)
 	/* Clear this or we will die instantly when we
 	 * schedule back to this idler...
 	 */
-	clear_thread_flag(TIF_NEWCHILD);
+	current_thread_info()->new_child = 0;
 
 	/* Attach to the address space of init_task. */
 	atomic_inc(&init_mm.mm_count);

diff --git a/trunk/arch/sparc64/kernel/traps.c b/trunk/arch/sparc64/kernel/traps.c
@@ -2125,6 +2125,8 @@ void __init trap_init(void)
 	    TI_PCR != offsetof(struct thread_info, pcr_reg) ||
 	    TI_CEE_STUFF != offsetof(struct thread_info, cee_stuff) ||
 	    TI_PRE_COUNT != offsetof(struct thread_info, preempt_count) ||
+	    TI_NEW_CHILD != offsetof(struct thread_info, new_child) ||
+	    TI_SYS_NOERROR != offsetof(struct thread_info, syscall_noerror) ||
 	    TI_FPREGS != offsetof(struct thread_info, fpregs) ||
 	    (TI_FPREGS & (64 - 1)))
 		thread_info_offsets_are_bolixed_dave();

diff --git a/trunk/drivers/sbus/char/Kconfig b/trunk/drivers/sbus/char/Kconfig
@@ -71,20 +71,6 @@ config SUN_JSFLASH
 
 # XXX Why don't we do "source drivers/char/Config.in" somewhere?
 # no shit
-config APM_RTC_IS_GMT
-	bool
-	depends on EXPERIMENTAL && SPARC32 && PCI
-	default y
-	help
-	  Say Y here if your RTC (Real Time Clock a.k.a. hardware clock)
-	  stores the time in GMT (Greenwich Mean Time). Say N if your RTC
-	  stores localtime.
-
-	  It is in fact recommended to store GMT in your RTC, because then you
-	  don't have to worry about daylight savings time changes. The only
-	  reason not to use GMT in your RTC is if you also run a broken OS
-	  that doesn't understand GMT.
-
 config RTC
 	tristate "PC-style Real Time Clock Support"
 	depends on PCI && EXPERIMENTAL && SPARC32

diff --git a/trunk/drivers/sbus/char/aurora.c b/trunk/drivers/sbus/char/aurora.c
@@ -1515,8 +1515,7 @@ static void aurora_close(struct tty_struct * tty, struct file * filp)
 		 */
 		timeout = jiffies+HZ;
 		while(port->SRER & SRER_TXEMPTY)  {
-			current->state = TASK_INTERRUPTIBLE;
-			schedule_timeout(port->timeout);
+			msleep_interruptible(jiffies_to_msecs(port->timeout));
 			if (time_after(jiffies, timeout))
 				break;
 		}
@@ -1533,8 +1532,7 @@ static void aurora_close(struct tty_struct * tty, struct file * filp)
 	port->tty = 0;
 	if (port->blocked_open) {
 		if (port->close_delay) {
-			current->state = TASK_INTERRUPTIBLE;
-			schedule_timeout(port->close_delay);
+			msleep_interruptible(jiffies_to_msecs(port->close_delay));
 		}
 		wake_up_interruptible(&port->open_wait);
 	}

diff --git a/trunk/drivers/sbus/char/bbc_envctrl.c b/trunk/drivers/sbus/char/bbc_envctrl.c
@@ -4,13 +4,14 @@
  * Copyright (C) 2001 David S. Miller (davem@redhat.com)
  */
 
+#define __KERNEL_SYSCALLS__
+
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <asm/oplib.h>
 #include <asm/ebus.h>
-#define __KERNEL_SYSCALLS__
 static int errno;
 #include <asm/unistd.h>
 

diff --git a/trunk/drivers/sbus/char/envctrl.c b/trunk/drivers/sbus/char/envctrl.c
@@ -19,6 +19,8 @@
  *              Daniele Bellucci <bellucda@tiscali.it>
  */
 
+#define __KERNEL_SYSCALLS__
+
 #include <linux/config.h>
 #include <linux/module.h>
 #include <linux/sched.h>
@@ -35,7 +37,6 @@
 #include <asm/uaccess.h>
 #include <asm/envctrl.h>
 
-#define __KERNEL_SYSCALLS__
 static int errno;
 #include <asm/unistd.h>
 
@@ -1007,7 +1008,7 @@ static int kenvctrld(void *__unused)
 		return -ENODEV;
 	}
 
-	poll_interval = 5 * HZ; /* TODO env_mon_interval */
+	poll_interval = 5000; /* TODO env_mon_interval */
 
 	daemonize("kenvctrld");
 	allow_signal(SIGKILL);
@@ -1016,10 +1017,7 @@ static int kenvctrld(void *__unused)
 
 	printk(KERN_INFO "envctrl: %s starting...\n", current->comm);
 	for (;;) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule_timeout(poll_interval);
-
-		if(signal_pending(current))
+		if(msleep_interruptible(poll_interval))
 			break;
 
 		for (whichcpu = 0; whichcpu < ENVCTRL_MAX_CPU; ++whichcpu) {

diff --git a/trunk/drivers/sbus/char/vfc_i2c.c b/trunk/drivers/sbus/char/vfc_i2c.c
@@ -88,14 +88,16 @@ void vfc_i2c_delay_wakeup(struct vfc_dev *dev)
 
 void vfc_i2c_delay_no_busy(struct vfc_dev *dev, unsigned long usecs) 
 {
+	DEFINE_WAIT(wait);
 	init_timer(&dev->poll_timer);
-	dev->poll_timer.expires = jiffies + 
-		((unsigned long)usecs*(HZ))/1000000;
+	dev->poll_timer.expires = jiffies + usecs_to_jiffies(usecs);
 	dev->poll_timer.data=(unsigned long)dev;
 	dev->poll_timer.function=(void *)(unsigned long)vfc_i2c_delay_wakeup;
 	add_timer(&dev->poll_timer);
-	sleep_on(&dev->poll_wait);
+	prepare_to_wait(&dev->poll_wait, &wait, TASK_UNINTERRUPTIBLE);
+	schedule();
 	del_timer(&dev->poll_timer);
+	finish_wait(&dev->poll_wait, &wait);
 }
 
 void inline vfc_i2c_delay(struct vfc_dev *dev) 

diff --git a/trunk/include/asm-arm/locks.h b/trunk/include/asm-arm/locks.h
@@ -61,7 +61,7 @@
 "	strex	ip, lr, [%0]\n"			\
 "	teq	ip, #0\n"			\
 "	bne	1b\n"				\
-"	teq	lr, #0\n"			\
+"	cmp	lr, #0\n"			\
 "	movle	ip, %0\n"			\
 "	blle	" #wake				\
 	:					\
@@ -100,7 +100,7 @@
 	__asm__ __volatile__(			\
 	"@ up_op_read\n"			\
 "1:	ldrex	lr, [%0]\n"			\
-"	add	lr, lr, %1\n"			\
+"	adds	lr, lr, %1\n"			\
 "	strex	ip, lr, [%0]\n"			\
 "	teq	ip, #0\n"			\
 "	bne	1b\n"				\

diff --git a/trunk/include/asm-arm/spinlock.h b/trunk/include/asm-arm/spinlock.h
@@ -79,7 +79,8 @@ typedef struct {
 } rwlock_t;
 
 #define RW_LOCK_UNLOCKED	(rwlock_t) { 0 }
-#define rwlock_init(x)		do { *(x) + RW_LOCK_UNLOCKED; } while (0)
+#define rwlock_init(x)		do { *(x) = RW_LOCK_UNLOCKED; } while (0)
+#define rwlock_is_locked(x)	(*((volatile unsigned int *)(x)) != 0)
 
 /*
  * Write locks are easy - we just set bit 31.  When unlocking, we can
@@ -100,6 +101,21 @@ static inline void _raw_write_lock(rwlock_t *rw)
 	: "cc", "memory");
 }
 
+static inline int _raw_write_trylock(rwlock_t *rw)
+{
+	unsigned long tmp;
+
+	__asm__ __volatile__(
+"1:	ldrex	%0, [%1]\n"
+"	teq	%0, #0\n"
+"	strexeq	%0, %2, [%1]"
+	: "=&r" (tmp)
+	: "r" (&rw->lock), "r" (0x80000000)
+	: "cc", "memory");
+
+	return tmp == 0;
+}
+
 static inline void _raw_write_unlock(rwlock_t *rw)
 {
 	__asm__ __volatile__(
@@ -138,6 +154,8 @@ static inline void _raw_read_lock(rwlock_t *rw)
 
 static inline void _raw_read_unlock(rwlock_t *rw)
 {
+	unsigned long tmp, tmp2;
+
 	__asm__ __volatile__(
 "1:	ldrex	%0, [%2]\n"
 "	sub	%0, %0, #1\n"
@@ -151,19 +169,4 @@ static inline void _raw_read_unlock(rwlock_t *rw)
 
 #define _raw_read_trylock(lock) generic_raw_read_trylock(lock)
 
-static inline int _raw_write_trylock(rwlock_t *rw)
-{
-	unsigned long tmp;
-
-	__asm__ __volatile__(
-"1:	ldrex	%0, [%1]\n"
-"	teq	%0, #0\n"
-"	strexeq	%0, %2, [%1]"
-	: "=&r" (tmp)
-	: "r" (&rw->lock), "r" (0x80000000)
-	: "cc", "memory");
-
-	return tmp == 0;
-}
-
 #endif /* __ASM_SPINLOCK_H */