---

yaml
---
r: 20111
b: refs/heads/master
c: 7b3e2fc
h: refs/heads/master
i:
  20109: c48f0a1
  20107: be661d3
  20103: 7aedd4d
  20095: a6c425e
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 423ab71a8bd2345f87724abe320092a3a516b0bb
+refs/heads/master: 7b3e2fc847c8325a7b35185fa1fc2f1729ed9c5b

trunk/arch/alpha/kernel/smp.c

@@ -73,6 +73,9 @@ cpumask_t cpu_online_map;
 
 EXPORT_SYMBOL(cpu_online_map);
 
+/* cpus reported in the hwrpb */
+static unsigned long hwrpb_cpu_present_mask __initdata = 0;
+
 int smp_num_probed;		/* Internal processor count */
 int smp_num_cpus = 1;		/* Number that came online.  */
 
@@ -439,7 +442,7 @@ setup_smp(void)
 			if ((cpu->flags & 0x1cc) == 0x1cc) {
 				smp_num_probed++;
 				/* Assume here that "whami" == index */
-				cpu_set(i, cpu_possible_map);
+				hwrpb_cpu_present_mask |= (1UL << i);
 				cpu->pal_revision = boot_cpu_palrev;
 			}
 
@@ -450,12 +453,12 @@ setup_smp(void)
 		}
 	} else {
 		smp_num_probed = 1;
-		cpu_set(boot_cpuid, cpu_possible_map);
+		hwrpb_cpu_present_mask = (1UL << boot_cpuid);
 	}
 	cpu_present_mask = cpumask_of_cpu(boot_cpuid);
 
 	printk(KERN_INFO "SMP: %d CPUs probed -- cpu_present_mask = %lx\n",
-	       smp_num_probed, cpu_possible_map.bits[0]);
+	       smp_num_probed, hwrpb_cpu_present_mask);
 }
 
 /*
@@ -464,6 +467,8 @@ setup_smp(void)
 void __init
 smp_prepare_cpus(unsigned int max_cpus)
 {
+	int cpu_count, i;
+
 	/* Take care of some initial bookkeeping.  */
 	memset(ipi_data, 0, sizeof(ipi_data));
 
@@ -481,7 +486,19 @@ smp_prepare_cpus(unsigned int max_cpus)
 
 	printk(KERN_INFO "SMP starting up secondaries.\n");
 
-	smp_num_cpus = smp_num_probed;
+	cpu_count = 1;
+	for (i = 0; (i < NR_CPUS) && (cpu_count < max_cpus); i++) {
+		if (i == boot_cpuid)
+			continue;
+
+		if (((hwrpb_cpu_present_mask >> i) & 1) == 0)
+			continue;
+
+		cpu_set(i, cpu_possible_map);
+		cpu_count++;
+	}
+
+	smp_num_cpus = cpu_count;
 }
 
 void __devinit

trunk/arch/arm/Kconfig

@@ -69,9 +69,6 @@ config GENERIC_ISA_DMA
 config FIQ
 	bool
 
-config ARCH_MTD_XIP
-	bool
-
 source "init/Kconfig"
 
 menu "System Type"
@@ -139,7 +136,6 @@ config ARCH_L7200
 
 config ARCH_PXA
 	bool "PXA2xx-based"
-	select ARCH_MTD_XIP
 
 config ARCH_RPC
 	bool "RiscPC"
@@ -156,7 +152,6 @@ config ARCH_SA1100
 	bool "SA1100-based"
 	select ISA
 	select ARCH_DISCONTIGMEM_ENABLE
-	select ARCH_MTD_XIP
 
 config ARCH_S3C2410
 	bool "Samsung S3C2410"

trunk/arch/mips/kernel/process.c

@@ -58,8 +58,8 @@ ATTRIB_NORET void cpu_idle(void)
 	}
 }
 
-extern int do_signal(sigset_t *oldset, struct pt_regs *regs);
-extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
+extern int do_signal(struct pt_regs *regs);
+extern int do_signal32(struct pt_regs *regs);
 
 /*
  * Native o32 and N64 ABI without DSP ASE

trunk/arch/mips/kernel/signal.c

@@ -39,8 +39,6 @@
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
-int do_signal(sigset_t *oldset, struct pt_regs *regs);
-
 /*
  * Atomically swap in the new signal mask, and wait for a signal.
  */
@@ -50,7 +48,7 @@ save_static_function(sys_sigsuspend);
 __attribute_used__ noinline static int
 _sys_sigsuspend(nabi_no_regargs struct pt_regs regs)
 {
-	sigset_t saveset, newset;
+	sigset_t newset;
 	sigset_t __user *uset;
 
 	uset = (sigset_t __user *) regs.regs[4];
@@ -59,27 +57,23 @@ _sys_sigsuspend(nabi_no_regargs struct pt_regs regs)
 	sigdelsetmask(&newset, ~_BLOCKABLE);
 
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	current->blocked = newset;
 	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs.regs[2] = EINTR;
-	regs.regs[7] = 1;
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		if (do_signal(&saveset, &regs))
-			return -EINTR;
-	}
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_thread_flag(TIF_RESTORE_SIGMASK);
+	return -ERESTARTNOHAND;
 }
 #endif
 
 save_static_function(sys_rt_sigsuspend);
 __attribute_used__ noinline static int
 _sys_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
 {
-	sigset_t saveset, newset;
+	sigset_t newset;
 	sigset_t __user *unewset;
 	size_t sigsetsize;
 
@@ -94,19 +88,15 @@ _sys_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
 	sigdelsetmask(&newset, ~_BLOCKABLE);
 
 	spin_lock_irq(&current->sighand->siglock);
-	saveset = current->blocked;
+	current->saved_sigmask = current->blocked;
 	current->blocked = newset;
         recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 
-	regs.regs[2] = EINTR;
-	regs.regs[7] = 1;
-	while (1) {
-		current->state = TASK_INTERRUPTIBLE;
-		schedule();
-		if (do_signal(&saveset, &regs))
-			return -EINTR;
-	}
+	current->state = TASK_INTERRUPTIBLE;
+	schedule();
+	set_thread_flag(TIF_RESTORE_SIGMASK);
+	return -ERESTARTNOHAND;
 }
 
 #ifdef CONFIG_TRAD_SIGNALS
@@ -315,11 +305,11 @@ int setup_frame(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, frame->regs[31]);
 #endif
-        return 1;
+        return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }
 #endif
 
@@ -375,11 +365,11 @@ int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 #endif
-	return 1;
+	return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }
 
 static inline int handle_signal(unsigned long sig, siginfo_t *info,
@@ -393,7 +383,7 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info,
 		regs->regs[2] = EINTR;
 		break;
 	case ERESTARTSYS:
-		if(!(ka->sa.sa_flags & SA_RESTART)) {
+		if (!(ka->sa.sa_flags & SA_RESTART)) {
 			regs->regs[2] = EINTR;
 			break;
 		}
@@ -420,9 +410,10 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info,
 	return ret;
 }
 
-int do_signal(sigset_t *oldset, struct pt_regs *regs)
+int do_signal(struct pt_regs *regs)
 {
 	struct k_sigaction ka;
+	sigset_t *oldset;
 	siginfo_t info;
 	int signr;
 
@@ -437,12 +428,26 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs)
 	if (try_to_freeze())
 		goto no_signal;
 
-	if (!oldset)
+	if (test_thread_flag(TIF_RESTORE_SIGMASK))
+		oldset = &current->saved_sigmask;
+	else
 		oldset = &current->blocked;
 
+
 	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-	if (signr > 0)
-		return handle_signal(signr, &info, &ka, oldset, regs);
+	if (signr > 0) {
+		/* Whee!  Actually deliver the signal.  */
+		if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
+			/*
+			 * A signal was successfully delivered; the saved
+			 * sigmask will have been stored in the signal frame,
+			 * and will be restored by sigreturn, so we can simply
+			 * clear the TIF_RESTORE_SIGMASK flag.
+			 */
+			if (test_thread_flag(TIF_RESTORE_SIGMASK))
+				clear_thread_flag(TIF_RESTORE_SIGMASK);
+		}
+	}
 
 no_signal:
 	/*
@@ -463,18 +468,27 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs)
 			regs->cp0_epc -= 4;
 		}
 	}
+
+	/*
+	 * If there's no signal to deliver, we just put the saved sigmask
+	 * back
+	 */
+	if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+		clear_thread_flag(TIF_RESTORE_SIGMASK);
+		sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+	}
+
 	return 0;
 }
 
 /*
  * notification of userspace execution resumption
- * - triggered by current->work.notify_resume
+ * - triggered by the TIF_WORK_MASK flags
  */
-asmlinkage void do_notify_resume(struct pt_regs *regs, sigset_t *oldset,
+asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
 	__u32 thread_info_flags)
 {
 	/* deal with pending signal delivery */
-	if (thread_info_flags & _TIF_SIGPENDING) {
-		current->thread.abi->do_signal(oldset, regs);
-	}
+	if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
+		current->thread.abi->do_signal(regs);
 }

trunk/arch/mips/kernel/signal32.c

@@ -694,11 +694,11 @@ int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, frame->sf_code);
 #endif
-	return 1;
+	return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }
 
 int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
@@ -765,11 +765,11 @@ int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, frame->rs_code);
 #endif
-	return 1;
+	return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }
 
 static inline int handle_signal(unsigned long sig, siginfo_t *info,

trunk/arch/mips/kernel/signal_n32.c

@@ -186,9 +186,9 @@ int setup_rt_frame_n32(struct k_sigaction * ka,
 	       current->comm, current->pid,
 	       frame, regs->cp0_epc, regs->regs[31]);
 #endif
-	return 1;
+	return 0;
 
 give_sigsegv:
 	force_sigsegv(signr, current);
-	return 0;
+	return -EFAULT;
 }

trunk/arch/powerpc/kernel/signal_32.c

@@ -142,7 +142,11 @@ static inline int get_old_sigaction(struct k_sigaction *new_ka,
 	return 0;
 }
 
-#define to_user_ptr(p)		ptr_to_compat(p)
+static inline compat_uptr_t to_user_ptr(void *kp)
+{
+	return (compat_uptr_t)(u64)kp;
+}
+
 #define from_user_ptr(p)	compat_ptr(p)
 
 static inline int save_general_regs(struct pt_regs *regs,
@@ -209,8 +213,8 @@ static inline int get_old_sigaction(struct k_sigaction *new_ka,
 	return 0;
 }
 
-#define to_user_ptr(p)		((unsigned long)(p))
-#define from_user_ptr(p)	((void __user *)(p))
+#define to_user_ptr(p)		(p)
+#define from_user_ptr(p)	(p)
 
 static inline int save_general_regs(struct pt_regs *regs,
 		struct mcontext __user *frame)
@@ -522,7 +526,7 @@ long compat_sys_rt_sigaction(int sig, const struct sigaction32 __user *act,
 
 	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
 	if (!ret && oact) {
-		ret = put_user(to_user_ptr(old_ka.sa.sa_handler), &oact->sa_handler);
+		ret = put_user((long)old_ka.sa.sa_handler, &oact->sa_handler);
 		ret |= put_sigset_t(&oact->sa_mask, &old_ka.sa.sa_mask);
 		ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
 	}
@@ -671,8 +675,8 @@ long compat_sys_rt_sigqueueinfo(u32 pid, u32 sig, compat_siginfo_t __user *uinfo
 int compat_sys_sigaltstack(u32 __new, u32 __old, int r5,
 		      int r6, int r7, int r8, struct pt_regs *regs)
 {
-	stack_32_t __user * newstack = compat_ptr(__new);
-	stack_32_t __user * oldstack = compat_ptr(__old);
+	stack_32_t __user * newstack = (stack_32_t __user *)(long) __new;
+	stack_32_t __user * oldstack = (stack_32_t __user *)(long) __old;
 	stack_t uss, uoss;
 	int ret;
 	mm_segment_t old_fs;
@@ -704,7 +708,7 @@ int compat_sys_sigaltstack(u32 __new, u32 __old, int r5,
 	set_fs(old_fs);
 	/* Copy the stack information to the user output buffer */
 	if (!ret && oldstack  &&
-		(put_user(ptr_to_compat(uoss.ss_sp), &oldstack->ss_sp) ||
+		(put_user((long)uoss.ss_sp, &oldstack->ss_sp) ||
 		 __put_user(uoss.ss_flags, &oldstack->ss_flags) ||
 		 __put_user(uoss.ss_size, &oldstack->ss_size)))
 		return -EFAULT;

trunk/arch/powerpc/kernel/signal_64.c

@@ -60,8 +60,8 @@ struct rt_sigframe {
 	struct ucontext uc;
 	unsigned long _unused[2];
 	unsigned int tramp[TRAMP_SIZE];
-	struct siginfo __user *pinfo;
-	void __user *puc;
+	struct siginfo *pinfo;
+	void *puc;
 	struct siginfo info;
 	/* 64 bit ABI allows for 288 bytes below sp before decrementing it. */
 	char abigap[288];