---

yaml
---
r: 334829
b: refs/heads/master
c: cff7b8b
h: refs/heads/master
i:
  334827: f300c7f
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4e85fb831aa210fd1c5e2cb7909ac203c1f5b67f
+refs/heads/master: cff7b8ba60e332377568c3d55c8036e9b1de32e6

trunk/Documentation/00-INDEX

@@ -210,6 +210,8 @@ local_ops.txt
 	- semantics and behavior of local atomic operations.
 lockdep-design.txt
 	- documentation on the runtime locking correctness validator.
+lockup-watchdogs.txt
+	- info on soft and hard lockup detectors (aka nmi_watchdog).
 logo.gif
 	- full colour GIF image of Linux logo (penguin - Tux).
 logo.txt
@@ -240,8 +242,6 @@ netlabel/
 	- directory with information on the NetLabel subsystem.
 networking/
 	- directory with info on various aspects of networking with Linux.
-nmi_watchdog.txt
-	- info on NMI watchdog for SMP systems.
 nommu-mmap.txt
 	- documentation about no-mmu memory mapping support.
 numastat.txt

trunk/Documentation/devicetree/bindings/pinctrl/nvidia,tegra20-pinmux.txt

@@ -93,7 +93,7 @@ Valid values for pin and group names are:
 
     With some exceptions, these support nvidia,high-speed-mode,
     nvidia,schmitt, nvidia,low-power-mode, nvidia,pull-down-strength,
-    nvidia,pull-up-strength, nvidia,slew_rate-rising, nvidia,slew_rate-falling.
+    nvidia,pull-up-strength, nvidia,slew-rate-rising, nvidia,slew-rate-falling.
 
     drive_ao1, drive_ao2, drive_at1, drive_at2, drive_cdev1, drive_cdev2,
     drive_csus, drive_dap1, drive_dap2, drive_dap3, drive_dap4, drive_dbg,

trunk/Documentation/devicetree/bindings/pinctrl/nvidia,tegra30-pinmux.txt

@@ -83,7 +83,7 @@ Valid values for pin and group names are:
   drive groups:
 
     These all support nvidia,pull-down-strength, nvidia,pull-up-strength,
-    nvidia,slew_rate-rising, nvidia,slew_rate-falling. Most but not all
+    nvidia,slew-rate-rising, nvidia,slew-rate-falling. Most but not all
     support nvidia,high-speed-mode, nvidia,schmitt, nvidia,low-power-mode.
 
     ao1, ao2, at1, at2, at3, at4, at5, cdev1, cdev2, cec, crt, csus, dap1,

trunk/arch/alpha/include/asm/thread_info.h

@@ -7,6 +7,7 @@
 #include <asm/processor.h>
 #include <asm/types.h>
 #include <asm/hwrpb.h>
+#include <asm/sysinfo.h>
 #endif
 
 #ifndef __ASSEMBLY__
@@ -21,6 +22,7 @@ struct thread_info {
 	mm_segment_t		addr_limit;	/* thread address space */
 	unsigned		cpu;		/* current CPU */
 	int			preempt_count; /* 0 => preemptable, <0 => BUG */
+	unsigned int		status;		/* thread-synchronous flags */
 
 	int bpt_nsaved;
 	unsigned long bpt_addr[2];		/* breakpoint handling  */
@@ -63,27 +65,19 @@ register struct thread_info *__current_thread_info __asm__("$8");
  * - these are process state flags and used from assembly
  * - pending work-to-be-done flags come first and must be assigned to be
  *   within bits 0 to 7 to fit in and immediate operand.
- * - ALPHA_UAC_SHIFT below must be kept consistent with the unaligned
- *   control flags.
  *
  * TIF_SYSCALL_TRACE is known to be 0 via blbs.
  */
 #define TIF_SYSCALL_TRACE	0	/* syscall trace active */
 #define TIF_NOTIFY_RESUME	1	/* callback before returning to user */
 #define TIF_SIGPENDING		2	/* signal pending */
 #define TIF_NEED_RESCHED	3	/* rescheduling necessary */
-#define TIF_POLLING_NRFLAG	8	/* poll_idle is polling NEED_RESCHED */
 #define TIF_DIE_IF_KERNEL	9	/* dik recursion lock */
-#define TIF_UAC_NOPRINT		10	/* ! Preserve sequence of following */
-#define TIF_UAC_NOFIX		11	/* ! flags as they match            */
-#define TIF_UAC_SIGBUS		12	/* ! userspace part of 'osf_sysinfo' */
 #define TIF_MEMDIE		13	/* is terminating due to OOM killer */
-#define TIF_RESTORE_SIGMASK	14	/* restore signal mask in do_signal */
 
 #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
 #define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
-#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
 #define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
 
 /* Work to do on interrupt/exception return.  */
@@ -94,29 +88,63 @@ register struct thread_info *__current_thread_info __asm__("$8");
 #define _TIF_ALLWORK_MASK	(_TIF_WORK_MASK		\
 				 | _TIF_SYSCALL_TRACE)
 
-#define ALPHA_UAC_SHIFT		TIF_UAC_NOPRINT
-#define ALPHA_UAC_MASK		(1 << TIF_UAC_NOPRINT | 1 << TIF_UAC_NOFIX | \
-				 1 << TIF_UAC_SIGBUS)
+#define TS_UAC_NOPRINT		0x0001	/* ! Preserve the following three */
+#define TS_UAC_NOFIX		0x0002	/* ! flags as they match          */
+#define TS_UAC_SIGBUS		0x0004	/* ! userspace part of 'osf_sysinfo' */
+#define TS_RESTORE_SIGMASK	0x0008	/* restore signal mask in do_signal() */
+#define TS_POLLING		0x0010	/* idle task polling need_resched,
+					   skip sending interrupt */
 
-#define SET_UNALIGN_CTL(task,value)	({				     \
-	task_thread_info(task)->flags = ((task_thread_info(task)->flags &    \
-		~ALPHA_UAC_MASK)					     \
-		| (((value) << ALPHA_UAC_SHIFT)       & (1<<TIF_UAC_NOPRINT))\
-		| (((value) << (ALPHA_UAC_SHIFT + 1)) & (1<<TIF_UAC_SIGBUS)) \
-		| (((value) << (ALPHA_UAC_SHIFT - 1)) & (1<<TIF_UAC_NOFIX)));\
+#define tsk_is_polling(t) (task_thread_info(t)->status & TS_POLLING)
+
+#ifndef __ASSEMBLY__
+#define HAVE_SET_RESTORE_SIGMASK	1
+static inline void set_restore_sigmask(void)
+{
+	struct thread_info *ti = current_thread_info();
+	ti->status |= TS_RESTORE_SIGMASK;
+	WARN_ON(!test_bit(TIF_SIGPENDING, (unsigned long *)&ti->flags));
+}
+static inline void clear_restore_sigmask(void)
+{
+	current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
+}
+static inline bool test_restore_sigmask(void)
+{
+	return current_thread_info()->status & TS_RESTORE_SIGMASK;
+}
+static inline bool test_and_clear_restore_sigmask(void)
+{
+	struct thread_info *ti = current_thread_info();
+	if (!(ti->status & TS_RESTORE_SIGMASK))
+		return false;
+	ti->status &= ~TS_RESTORE_SIGMASK;
+	return true;
+}
+#endif
+
+#define SET_UNALIGN_CTL(task,value)	({				\
+	__u32 status = task_thread_info(task)->status & ~UAC_BITMASK;	\
+	if (value & PR_UNALIGN_NOPRINT)					\
+		status |= TS_UAC_NOPRINT;				\
+	if (value & PR_UNALIGN_SIGBUS)					\
+		status |= TS_UAC_SIGBUS;				\
+	if (value & 4)	/* alpha-specific */				\
+		status |= TS_UAC_NOFIX;					\
+	task_thread_info(task)->status = status;			\
 	0; })
 
 #define GET_UNALIGN_CTL(task,value)	({				\
-	put_user((task_thread_info(task)->flags & (1 << TIF_UAC_NOPRINT))\
-		  >> ALPHA_UAC_SHIFT					\
-		 | (task_thread_info(task)->flags & (1 << TIF_UAC_SIGBUS))\
-		 >> (ALPHA_UAC_SHIFT + 1)				\
-		 | (task_thread_info(task)->flags & (1 << TIF_UAC_NOFIX))\
-		 >> (ALPHA_UAC_SHIFT - 1),				\
-		 (int __user *)(value));				\
+	__u32 status = task_thread_info(task)->status & ~UAC_BITMASK;	\
+	__u32 res = 0;							\
+	if (status & TS_UAC_NOPRINT)					\
+		res |= PR_UNALIGN_NOPRINT;				\
+	if (status & TS_UAC_SIGBUS)					\
+		res |= PR_UNALIGN_SIGBUS;				\
+	if (status & TS_UAC_NOFIX)					\
+		res |= 4;						\
+	put_user(res, (int __user *)(value));				\
 	})
 
-#define tsk_is_polling(t) test_tsk_thread_flag(t, TIF_POLLING_NRFLAG)
-
 #endif /* __KERNEL__ */
 #endif /* _ALPHA_THREAD_INFO_H */

trunk/arch/alpha/kernel/osf_sys.c

@@ -793,8 +793,7 @@ SYSCALL_DEFINE5(osf_getsysinfo, unsigned long, op, void __user *, buffer,
  	case GSI_UACPROC:
 		if (nbytes < sizeof(unsigned int))
 			return -EINVAL;
-		w = (current_thread_info()->flags >> ALPHA_UAC_SHIFT) &
-			UAC_BITMASK;
+		w = current_thread_info()->status & UAC_BITMASK;
 		if (put_user(w, (unsigned int __user *)buffer))
 			return -EFAULT;
  		return 1;
@@ -904,24 +903,20 @@ SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
 		break;
 
  	case SSI_NVPAIRS: {
-		unsigned long v, w, i;
-		unsigned int old, new;
+		unsigned __user *p = buffer;
+		unsigned i;
 
- 		for (i = 0; i < nbytes; ++i) {
+		for (i = 0, p = buffer; i < nbytes; ++i, p += 2) {
+			unsigned v, w, status;
 
- 			if (get_user(v, 2*i + (unsigned int __user *)buffer))
- 				return -EFAULT;
- 			if (get_user(w, 2*i + 1 + (unsigned int __user *)buffer))
+			if (get_user(v, p) || get_user(w, p + 1))
  				return -EFAULT;
  			switch (v) {
  			case SSIN_UACPROC:
-			again:
-				old = current_thread_info()->flags;
-				new = old & ~(UAC_BITMASK << ALPHA_UAC_SHIFT);
-				new = new | (w & UAC_BITMASK) << ALPHA_UAC_SHIFT;
-				if (cmpxchg(&current_thread_info()->flags,
-					    old, new) != old)
-					goto again;
+				w &= UAC_BITMASK;
+				status = current_thread_info()->status;
+				status = (status & ~UAC_BITMASK) | w;
+				current_thread_info()->status = status;
  				break;
 
  			default:

trunk/arch/alpha/kernel/process.c

@@ -49,7 +49,7 @@ EXPORT_SYMBOL(pm_power_off);
 void
 cpu_idle(void)
 {
-	set_thread_flag(TIF_POLLING_NRFLAG);
+	current_thread_info()->status |= TS_POLLING;
 
 	while (1) {
 		/* FIXME -- EV6 and LCA45 know how to power down

trunk/arch/alpha/kernel/traps.c

@@ -780,17 +780,17 @@ do_entUnaUser(void __user * va, unsigned long opcode,
 	/* Check the UAC bits to decide what the user wants us to do
 	   with the unaliged access.  */
 
-	if (!test_thread_flag (TIF_UAC_NOPRINT)) {
+	if (!(current_thread_info()->status & TS_UAC_NOPRINT)) {
 		if (__ratelimit(&ratelimit)) {
 			printk("%s(%d): unaligned trap at %016lx: %p %lx %ld\n",
 			       current->comm, task_pid_nr(current),
 			       regs->pc - 4, va, opcode, reg);
 		}
 	}
-	if (test_thread_flag (TIF_UAC_SIGBUS))
+	if ((current_thread_info()->status & TS_UAC_SIGBUS))
 		goto give_sigbus;
 	/* Not sure why you'd want to use this, but... */
-	if (test_thread_flag (TIF_UAC_NOFIX))
+	if ((current_thread_info()->status & TS_UAC_NOFIX))
 		return;
 
 	/* Don't bother reading ds in the access check since we already

trunk/arch/arm/include/asm/xen/interface.h

@@ -29,16 +29,22 @@
 
 #ifndef __ASSEMBLY__
 /* Explicitly size integers that represent pfns in the interface with
- * Xen so that we can have one ABI that works for 32 and 64 bit guests. */
+ * Xen so that we can have one ABI that works for 32 and 64 bit guests.
+ * Note that this means that the xen_pfn_t type may be capable of
+ * representing pfn's which the guest cannot represent in its own pfn
+ * type. However since pfn space is controlled by the guest this is
+ * fine since it simply wouldn't be able to create any sure pfns in
+ * the first place.
+ */
 typedef uint64_t xen_pfn_t;
+#define PRI_xen_pfn "llx"
 typedef uint64_t xen_ulong_t;
+#define PRI_xen_ulong "llx"
 /* Guest handles for primitive C types. */
 __DEFINE_GUEST_HANDLE(uchar, unsigned char);
 __DEFINE_GUEST_HANDLE(uint,  unsigned int);
-__DEFINE_GUEST_HANDLE(ulong, unsigned long);
 DEFINE_GUEST_HANDLE(char);
 DEFINE_GUEST_HANDLE(int);
-DEFINE_GUEST_HANDLE(long);
 DEFINE_GUEST_HANDLE(void);
 DEFINE_GUEST_HANDLE(uint64_t);
 DEFINE_GUEST_HANDLE(uint32_t);

trunk/arch/arm/include/asm/xen/page.h

@@ -10,7 +10,7 @@
 #include <xen/interface/grant_table.h>
 
 #define pfn_to_mfn(pfn)			(pfn)
-#define phys_to_machine_mapping_valid	(1)
+#define phys_to_machine_mapping_valid(pfn) (1)
 #define mfn_to_pfn(mfn)			(mfn)
 #define mfn_to_virt(m)			(__va(mfn_to_pfn(m) << PAGE_SHIFT))
 
@@ -30,6 +30,8 @@ typedef struct xpaddr {
 #define XMADDR(x)	((xmaddr_t) { .maddr = (x) })
 #define XPADDR(x)	((xpaddr_t) { .paddr = (x) })
 
+#define INVALID_P2M_ENTRY      (~0UL)
+
 static inline xmaddr_t phys_to_machine(xpaddr_t phys)
 {
 	unsigned offset = phys.paddr & ~PAGE_MASK;
@@ -74,9 +76,14 @@ static inline int m2p_remove_override(struct page *page, bool clear_pte)
 	return 0;
 }
 
+static inline bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn)
+{
+	BUG_ON(pfn != mfn && mfn != INVALID_P2M_ENTRY);
+	return true;
+}
+
 static inline bool set_phys_to_machine(unsigned long pfn, unsigned long mfn)
 {
-	BUG();
-	return false;
+	return __set_phys_to_machine(pfn, mfn);
 }
 #endif /* _ASM_ARM_XEN_PAGE_H */

trunk/arch/arm/xen/grant-table.c

@@ -33,7 +33,7 @@
 #include <xen/page.h>
 #include <xen/grant_table.h>
 
-int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
+int arch_gnttab_map_shared(xen_pfn_t *frames, unsigned long nr_gframes,
 			   unsigned long max_nr_gframes,
 			   void **__shared)
 {

trunk/arch/ia64/include/asm/Kbuild

@@ -1,3 +1,4 @@
 
 generic-y += clkdev.h
 generic-y += exec.h
+generic-y += kvm_para.h

trunk/arch/m68k/include/asm/Kbuild

@@ -1,5 +1,3 @@
-include include/asm-generic/Kbuild.asm
-header-y += cachectl.h
 
 generic-y += bitsperlong.h
 generic-y += clkdev.h