Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

Pull tile arch update from Chris Metcalf:
 "The bulk of this change is the tile uapi disintegration.  There is
  also a one-line change in here to enable interrupts in
  do_work_pending() to avoid a WARN_ON in _local_bh_enable_ip()."

* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  arch/tile: enable interrupts in do_work_pending()
  UAPI: (Scripted) Disintegrate arch/tile/include/asm
  UAPI: (Scripted) Disintegrate arch/tile/include/arch

arch/tile/include/arch/Kbuild

@@ -1,17 +0,0 @@
-header-y += abi.h
-header-y += chip.h
-header-y += chip_tile64.h
-header-y += chip_tilegx.h
-header-y += chip_tilepro.h
-header-y += icache.h
-header-y += interrupts.h
-header-y += interrupts_32.h
-header-y += interrupts_64.h
-header-y += opcode.h
-header-y += opcode_tilegx.h
-header-y += opcode_tilepro.h
-header-y += sim.h
-header-y += sim_def.h
-header-y += spr_def.h
-header-y += spr_def_32.h
-header-y += spr_def_64.h

arch/tile/include/arch/spr_def.h

@@ -11,15 +11,11 @@
  *   NON INFRINGEMENT.  See the GNU General Public License for
  *   more details.
  */
+#ifndef __ARCH_SPR_DEF_H__
+#define __ARCH_SPR_DEF_H__
 
-/* Include the proper base SPR definition file. */
-#ifdef __tilegx__
-#include <arch/spr_def_64.h>
-#else
-#include <arch/spr_def_32.h>
-#endif
+#include <uapi/arch/spr_def.h>
 
-#ifdef __KERNEL__
 
 /*
  * In addition to including the proper base SPR definition file, depending
@@ -110,4 +106,4 @@
 #define INT_INTCTRL_K \
 	_concat4(INT_INTCTRL_, CONFIG_KERNEL_PL,,)
 
-#endif /* __KERNEL__ */
+#endif /* __ARCH_SPR_DEF_H__ */

arch/tile/include/asm/Kbuild

@@ -1,10 +1,7 @@
-include include/asm-generic/Kbuild.asm
 
 header-y += ../arch/
 
-header-y += cachectl.h
 header-y += ucontext.h
-header-y += hardwall.h
 
 generic-y += bug.h
 generic-y += bugs.h

arch/tile/include/asm/hardwall.h

@@ -14,40 +14,11 @@
  * Provide methods for access control of per-cpu resources like
  * UDN, IDN, or IPI.
  */
-
 #ifndef _ASM_TILE_HARDWALL_H
 #define _ASM_TILE_HARDWALL_H
 
-#include <arch/chip.h>
-#include <linux/ioctl.h>
-
-#define HARDWALL_IOCTL_BASE 0xa2
-
-/*
- * The HARDWALL_CREATE() ioctl is a macro with a "size" argument.
- * The resulting ioctl value is passed to the kernel in conjunction
- * with a pointer to a standard kernel bitmask of cpus.
- * For network resources (UDN or IDN) the bitmask must physically
- * represent a rectangular configuration on the chip.
- * The "size" is the number of bytes of cpu mask data.
- */
-#define _HARDWALL_CREATE 1
-#define HARDWALL_CREATE(size) \
-  _IOC(_IOC_READ, HARDWALL_IOCTL_BASE, _HARDWALL_CREATE, (size))
-
-#define _HARDWALL_ACTIVATE 2
-#define HARDWALL_ACTIVATE \
-  _IO(HARDWALL_IOCTL_BASE, _HARDWALL_ACTIVATE)
-
-#define _HARDWALL_DEACTIVATE 3
-#define HARDWALL_DEACTIVATE \
- _IO(HARDWALL_IOCTL_BASE, _HARDWALL_DEACTIVATE)
-
-#define _HARDWALL_GET_ID 4
-#define HARDWALL_GET_ID \
- _IO(HARDWALL_IOCTL_BASE, _HARDWALL_GET_ID)
+#include <uapi/asm/hardwall.h>
 
-#ifdef __KERNEL__
 /* /proc hooks for hardwall. */
 struct proc_dir_entry;
 #ifdef CONFIG_HARDWALL
@@ -56,6 +27,4 @@ int proc_pid_hardwall(struct task_struct *task, char *buffer);
 #else
 static inline void proc_tile_hardwall_init(struct proc_dir_entry *root) {}
 #endif
-#endif
-
 #endif /* _ASM_TILE_HARDWALL_H */

arch/tile/include/asm/ptrace.h

@@ -11,87 +11,21 @@
  *   NON INFRINGEMENT.  See the GNU General Public License for
  *   more details.
  */
-
 #ifndef _ASM_TILE_PTRACE_H
 #define _ASM_TILE_PTRACE_H
 
-#include <arch/chip.h>
-#include <arch/abi.h>
-
-/* These must match struct pt_regs, below. */
-#if CHIP_WORD_SIZE() == 32
-#define PTREGS_OFFSET_REG(n)    ((n)*4)
-#else
-#define PTREGS_OFFSET_REG(n)    ((n)*8)
-#endif
-#define PTREGS_OFFSET_BASE      0
-#define PTREGS_OFFSET_TP        PTREGS_OFFSET_REG(53)
-#define PTREGS_OFFSET_SP        PTREGS_OFFSET_REG(54)
-#define PTREGS_OFFSET_LR        PTREGS_OFFSET_REG(55)
-#define PTREGS_NR_GPRS          56
-#define PTREGS_OFFSET_PC        PTREGS_OFFSET_REG(56)
-#define PTREGS_OFFSET_EX1       PTREGS_OFFSET_REG(57)
-#define PTREGS_OFFSET_FAULTNUM  PTREGS_OFFSET_REG(58)
-#define PTREGS_OFFSET_ORIG_R0   PTREGS_OFFSET_REG(59)
-#define PTREGS_OFFSET_FLAGS     PTREGS_OFFSET_REG(60)
-#if CHIP_HAS_CMPEXCH()
-#define PTREGS_OFFSET_CMPEXCH   PTREGS_OFFSET_REG(61)
-#endif
-#define PTREGS_SIZE             PTREGS_OFFSET_REG(64)
+#include <linux/compiler.h>
 
 #ifndef __ASSEMBLY__
-
-#ifdef __KERNEL__
 /* Benefit from consistent use of "long" on all chips. */
 typedef unsigned long pt_reg_t;
-#else
-/* Provide appropriate length type to userspace regardless of -m32/-m64. */
-typedef uint_reg_t pt_reg_t;
-#endif
-
-/*
- * This struct defines the way the registers are stored on the stack during a
- * system call or exception.  "struct sigcontext" has the same shape.
- */
-struct pt_regs {
-	/* Saved main processor registers; 56..63 are special. */
-	/* tp, sp, and lr must immediately follow regs[] for aliasing. */
-	pt_reg_t regs[53];
-	pt_reg_t tp;		/* aliases regs[TREG_TP] */
-	pt_reg_t sp;		/* aliases regs[TREG_SP] */
-	pt_reg_t lr;		/* aliases regs[TREG_LR] */
-
-	/* Saved special registers. */
-	pt_reg_t pc;		/* stored in EX_CONTEXT_K_0 */
-	pt_reg_t ex1;		/* stored in EX_CONTEXT_K_1 (PL and ICS bit) */
-	pt_reg_t faultnum;	/* fault number (INT_SWINT_1 for syscall) */
-	pt_reg_t orig_r0;	/* r0 at syscall entry, else zero */
-	pt_reg_t flags;		/* flags (see below) */
-#if !CHIP_HAS_CMPEXCH()
-	pt_reg_t pad[3];
-#else
-	pt_reg_t cmpexch;	/* value of CMPEXCH_VALUE SPR at interrupt */
-	pt_reg_t pad[2];
 #endif
-};
-
-#endif /* __ASSEMBLY__ */
 
-#define PTRACE_GETREGS		12
-#define PTRACE_SETREGS		13
-#define PTRACE_GETFPREGS	14
-#define PTRACE_SETFPREGS	15
+#include <uapi/asm/ptrace.h>
 
-/* Support TILE-specific ptrace options, with events starting at 16. */
-#define PTRACE_O_TRACEMIGRATE	0x00010000
-#define PTRACE_EVENT_MIGRATE	16
-#ifdef __KERNEL__
 #define PTRACE_O_MASK_TILE	(PTRACE_O_TRACEMIGRATE)
 #define PT_TRACE_MIGRATE	0x00080000
 #define PT_TRACE_MASK_TILE	(PT_TRACE_MIGRATE)
-#endif
-
-#ifdef __KERNEL__
 
 /* Flag bits in pt_regs.flags */
 #define PT_FLAGS_DISABLE_IRQ    1  /* on return to kernel, disable irqs */
@@ -159,6 +93,4 @@ extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
 #define SINGLESTEP_STATE_TARGET_LB              2
 #define SINGLESTEP_STATE_TARGET_UB              7
 
-#endif /* !__KERNEL__ */
-
 #endif /* _ASM_TILE_PTRACE_H */

arch/tile/include/asm/setup.h

@@ -11,16 +11,13 @@
  *   NON INFRINGEMENT.  See the GNU General Public License for
  *   more details.
  */
-
 #ifndef _ASM_TILE_SETUP_H
 #define _ASM_TILE_SETUP_H
 
-#define COMMAND_LINE_SIZE	2048
-
-#ifdef __KERNEL__
 
 #include <linux/pfn.h>
 #include <linux/init.h>
+#include <uapi/asm/setup.h>
 
 /*
  * Reserved space for vmalloc and iomap - defined in asm/page.h
@@ -53,6 +50,4 @@ int hardwall_ipi_valid(int cpu);
 } while (0)
 #endif
 
-#endif /* __KERNEL__ */
-
 #endif /* _ASM_TILE_SETUP_H */

arch/tile/include/asm/signal.h

@@ -11,19 +11,11 @@
  *   NON INFRINGEMENT.  See the GNU General Public License for
  *   more details.
  */
-
 #ifndef _ASM_TILE_SIGNAL_H
 #define _ASM_TILE_SIGNAL_H
 
-/* Do not notify a ptracer when this signal is handled. */
-#define SA_NOPTRACE 0x02000000u
-
-/* Used in earlier Tilera releases, so keeping for binary compatibility. */
-#define SA_RESTORER 0x04000000u
-
-#include <asm-generic/signal.h>
+#include <uapi/asm/signal.h>
 
-#if defined(__KERNEL__)
 #if !defined(__ASSEMBLY__)
 struct pt_regs;
 int restore_sigcontext(struct pt_regs *, struct sigcontext __user *);
@@ -34,6 +26,4 @@ void signal_fault(const char *type, struct pt_regs *,
 void trace_unhandled_signal(const char *type, struct pt_regs *regs,
 			    unsigned long address, int signo);
 #endif
-#endif
-
 #endif /* _ASM_TILE_SIGNAL_H */

arch/tile/include/asm/unistd.h

@@ -11,32 +11,9 @@
  *   NON INFRINGEMENT.  See the GNU General Public License for
  *   more details.
  */
-
-#if !defined(__LP64__) || defined(__SYSCALL_COMPAT)
-/* Use the flavor of this syscall that matches the 32-bit API better. */
-#define __ARCH_WANT_SYNC_FILE_RANGE2
-#endif
-
-/* Use the standard ABI for syscalls. */
-#include <asm-generic/unistd.h>
-
-/* Additional Tilera-specific syscalls. */
-#define __NR_cacheflush	(__NR_arch_specific_syscall + 1)
-__SYSCALL(__NR_cacheflush, sys_cacheflush)
-
-#ifndef __tilegx__
-/* "Fast" syscalls provide atomic support for 32-bit chips. */
-#define __NR_FAST_cmpxchg	-1
-#define __NR_FAST_atomic_update	-2
-#define __NR_FAST_cmpxchg64	-3
-#define __NR_cmpxchg_badaddr	(__NR_arch_specific_syscall + 0)
-__SYSCALL(__NR_cmpxchg_badaddr, sys_cmpxchg_badaddr)
-#endif
-
-#ifdef __KERNEL__
 /* In compat mode, we use sys_llseek() for compat_sys_llseek(). */
 #ifdef CONFIG_COMPAT
 #define __ARCH_WANT_SYS_LLSEEK
 #endif
 #define __ARCH_WANT_SYS_NEWFSTATAT
-#endif
+#include <uapi/asm/unistd.h>

arch/tile/include/uapi/arch/Kbuild

@@ -1 +1,18 @@
 # UAPI Header export list
+header-y += abi.h
+header-y += chip.h
+header-y += chip_tile64.h
+header-y += chip_tilegx.h
+header-y += chip_tilepro.h
+header-y += icache.h
+header-y += interrupts.h
+header-y += interrupts_32.h
+header-y += interrupts_64.h
+header-y += opcode.h
+header-y += opcode_tilegx.h
+header-y += opcode_tilepro.h
+header-y += sim.h
+header-y += sim_def.h
+header-y += spr_def.h
+header-y += spr_def_32.h
+header-y += spr_def_64.h

arch/tile/include/uapi/arch/spr_def.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _UAPI__ARCH_SPR_DEF_H__
+#define _UAPI__ARCH_SPR_DEF_H__
+
+/* Include the proper base SPR definition file. */
+#ifdef __tilegx__
+#include <arch/spr_def_64.h>
+#else
+#include <arch/spr_def_32.h>
+#endif
+
+
+#endif /* _UAPI__ARCH_SPR_DEF_H__ */

arch/tile/include/arch/spr_def_32.h → arch/tile/include/uapi/arch/spr_def_32.h

@@ -14,8 +14,8 @@
 
 #ifndef __DOXYGEN__
 
-#ifndef __ARCH_SPR_DEF_H__
-#define __ARCH_SPR_DEF_H__
+#ifndef __ARCH_SPR_DEF_32_H__
+#define __ARCH_SPR_DEF_32_H__
 
 #define SPR_AUX_PERF_COUNT_0 0x6005
 #define SPR_AUX_PERF_COUNT_1 0x6006
@@ -252,6 +252,6 @@
 #define SPR_WATCH_MASK 0x420a
 #define SPR_WATCH_VAL 0x420b
 
-#endif /* !defined(__ARCH_SPR_DEF_H__) */
+#endif /* !defined(__ARCH_SPR_DEF_32_H__) */
 
 #endif /* !defined(__DOXYGEN__) */

arch/tile/include/arch/spr_def_64.h → arch/tile/include/uapi/arch/spr_def_64.h

@@ -14,8 +14,8 @@
 
 #ifndef __DOXYGEN__
 
-#ifndef __ARCH_SPR_DEF_H__
-#define __ARCH_SPR_DEF_H__
+#ifndef __ARCH_SPR_DEF_64_H__
+#define __ARCH_SPR_DEF_64_H__
 
 #define SPR_AUX_PERF_COUNT_0 0x2105
 #define SPR_AUX_PERF_COUNT_1 0x2106
@@ -211,6 +211,6 @@
 #define SPR_WATCH_MASK 0x200a
 #define SPR_WATCH_VAL 0x200b
 
-#endif /* !defined(__ARCH_SPR_DEF_H__) */
+#endif /* !defined(__ARCH_SPR_DEF_64_H__) */
 
 #endif /* !defined(__DOXYGEN__) */

arch/tile/include/uapi/asm/Kbuild

@@ -1,3 +1,18 @@
 # UAPI Header export list
 include include/uapi/asm-generic/Kbuild.asm
 
+header-y += auxvec.h
+header-y += bitsperlong.h
+header-y += byteorder.h
+header-y += cachectl.h
+header-y += hardwall.h
+header-y += kvm_para.h
+header-y += mman.h
+header-y += ptrace.h
+header-y += setup.h
+header-y += sigcontext.h
+header-y += siginfo.h
+header-y += signal.h
+header-y += stat.h
+header-y += swab.h
+header-y += unistd.h

arch/tile/include/uapi/asm/hardwall.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ *
+ * Provide methods for access control of per-cpu resources like
+ * UDN, IDN, or IPI.
+ */
+
+#ifndef _UAPI_ASM_TILE_HARDWALL_H
+#define _UAPI_ASM_TILE_HARDWALL_H
+
+#include <arch/chip.h>
+#include <linux/ioctl.h>
+
+#define HARDWALL_IOCTL_BASE 0xa2
+
+/*
+ * The HARDWALL_CREATE() ioctl is a macro with a "size" argument.
+ * The resulting ioctl value is passed to the kernel in conjunction
+ * with a pointer to a standard kernel bitmask of cpus.
+ * For network resources (UDN or IDN) the bitmask must physically
+ * represent a rectangular configuration on the chip.
+ * The "size" is the number of bytes of cpu mask data.
+ */
+#define _HARDWALL_CREATE 1
+#define HARDWALL_CREATE(size) \
+  _IOC(_IOC_READ, HARDWALL_IOCTL_BASE, _HARDWALL_CREATE, (size))
+
+#define _HARDWALL_ACTIVATE 2
+#define HARDWALL_ACTIVATE \
+  _IO(HARDWALL_IOCTL_BASE, _HARDWALL_ACTIVATE)
+
+#define _HARDWALL_DEACTIVATE 3
+#define HARDWALL_DEACTIVATE \
+ _IO(HARDWALL_IOCTL_BASE, _HARDWALL_DEACTIVATE)
+
+#define _HARDWALL_GET_ID 4
+#define HARDWALL_GET_ID \
+ _IO(HARDWALL_IOCTL_BASE, _HARDWALL_GET_ID)
+
+
+#endif /* _UAPI_ASM_TILE_HARDWALL_H */

arch/tile/include/uapi/asm/ptrace.h

@@ -0,0 +1,88 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _UAPI_ASM_TILE_PTRACE_H
+#define _UAPI_ASM_TILE_PTRACE_H
+
+#include <arch/chip.h>
+#include <arch/abi.h>
+
+/* These must match struct pt_regs, below. */
+#if CHIP_WORD_SIZE() == 32
+#define PTREGS_OFFSET_REG(n)    ((n)*4)
+#else
+#define PTREGS_OFFSET_REG(n)    ((n)*8)
+#endif
+#define PTREGS_OFFSET_BASE      0
+#define PTREGS_OFFSET_TP        PTREGS_OFFSET_REG(53)
+#define PTREGS_OFFSET_SP        PTREGS_OFFSET_REG(54)
+#define PTREGS_OFFSET_LR        PTREGS_OFFSET_REG(55)
+#define PTREGS_NR_GPRS          56
+#define PTREGS_OFFSET_PC        PTREGS_OFFSET_REG(56)
+#define PTREGS_OFFSET_EX1       PTREGS_OFFSET_REG(57)
+#define PTREGS_OFFSET_FAULTNUM  PTREGS_OFFSET_REG(58)
+#define PTREGS_OFFSET_ORIG_R0   PTREGS_OFFSET_REG(59)
+#define PTREGS_OFFSET_FLAGS     PTREGS_OFFSET_REG(60)
+#if CHIP_HAS_CMPEXCH()
+#define PTREGS_OFFSET_CMPEXCH   PTREGS_OFFSET_REG(61)
+#endif
+#define PTREGS_SIZE             PTREGS_OFFSET_REG(64)
+
+
+#ifndef __ASSEMBLY__
+
+#ifndef __KERNEL__
+/* Provide appropriate length type to userspace regardless of -m32/-m64. */
+typedef uint_reg_t pt_reg_t;
+#endif
+
+/*
+ * This struct defines the way the registers are stored on the stack during a
+ * system call or exception.  "struct sigcontext" has the same shape.
+ */
+struct pt_regs {
+	/* Saved main processor registers; 56..63 are special. */
+	/* tp, sp, and lr must immediately follow regs[] for aliasing. */
+	pt_reg_t regs[53];
+	pt_reg_t tp;		/* aliases regs[TREG_TP] */
+	pt_reg_t sp;		/* aliases regs[TREG_SP] */
+	pt_reg_t lr;		/* aliases regs[TREG_LR] */
+
+	/* Saved special registers. */
+	pt_reg_t pc;		/* stored in EX_CONTEXT_K_0 */
+	pt_reg_t ex1;		/* stored in EX_CONTEXT_K_1 (PL and ICS bit) */
+	pt_reg_t faultnum;	/* fault number (INT_SWINT_1 for syscall) */
+	pt_reg_t orig_r0;	/* r0 at syscall entry, else zero */
+	pt_reg_t flags;		/* flags (see below) */
+#if !CHIP_HAS_CMPEXCH()
+	pt_reg_t pad[3];
+#else
+	pt_reg_t cmpexch;	/* value of CMPEXCH_VALUE SPR at interrupt */
+	pt_reg_t pad[2];
+#endif
+};
+
+#endif /* __ASSEMBLY__ */
+
+#define PTRACE_GETREGS		12
+#define PTRACE_SETREGS		13
+#define PTRACE_GETFPREGS	14
+#define PTRACE_SETFPREGS	15
+
+/* Support TILE-specific ptrace options, with events starting at 16. */
+#define PTRACE_O_TRACEMIGRATE	0x00010000
+#define PTRACE_EVENT_MIGRATE	16
+
+
+#endif /* _UAPI_ASM_TILE_PTRACE_H */

arch/tile/include/uapi/asm/setup.h

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _UAPI_ASM_TILE_SETUP_H
+#define _UAPI_ASM_TILE_SETUP_H
+
+#define COMMAND_LINE_SIZE	2048
+
+
+#endif /* _UAPI_ASM_TILE_SETUP_H */

arch/tile/include/uapi/asm/signal.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _UAPI_ASM_TILE_SIGNAL_H
+#define _UAPI_ASM_TILE_SIGNAL_H
+
+/* Do not notify a ptracer when this signal is handled. */
+#define SA_NOPTRACE 0x02000000u
+
+/* Used in earlier Tilera releases, so keeping for binary compatibility. */
+#define SA_RESTORER 0x04000000u
+
+#include <asm-generic/signal.h>
+
+
+#endif /* _UAPI_ASM_TILE_SIGNAL_H */

arch/tile/include/uapi/asm/unistd.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#if !defined(__LP64__) || defined(__SYSCALL_COMPAT)
+/* Use the flavor of this syscall that matches the 32-bit API better. */
+#define __ARCH_WANT_SYNC_FILE_RANGE2
+#endif
+
+/* Use the standard ABI for syscalls. */
+#include <asm-generic/unistd.h>
+
+/* Additional Tilera-specific syscalls. */
+#define __NR_cacheflush	(__NR_arch_specific_syscall + 1)
+__SYSCALL(__NR_cacheflush, sys_cacheflush)
+
+#ifndef __tilegx__
+/* "Fast" syscalls provide atomic support for 32-bit chips. */
+#define __NR_FAST_cmpxchg	-1
+#define __NR_FAST_atomic_update	-2
+#define __NR_FAST_cmpxchg64	-3
+#define __NR_cmpxchg_badaddr	(__NR_arch_specific_syscall + 0)
+__SYSCALL(__NR_cmpxchg_badaddr, sys_cmpxchg_badaddr)
+#endif

arch/tile/kernel/process.c

@@ -548,6 +548,9 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
 	if (!user_mode(regs))
 		return 0;
 
+	/* Enable interrupts; they are disabled again on return to caller. */
+	local_irq_enable();
+
 	if (thread_info_flags & _TIF_NEED_RESCHED) {
 		schedule();
 		return 1;