arch/tile: Miscellaneous cleanup changes.

This commit is primarily changes caused by reviewing "sparse"
and "checkpatch" output on our sources, so is somewhat noisy, since
things like "printk() -> pr_err()" (or whatever) throughout the
codebase tend to get tedious to read.  Rather than trying to tease
apart precisely which things changed due to which type of code
review, this commit includes various cleanups in the code:

- sparse: Add declarations in headers for globals.
- sparse: Fix __user annotations.
- sparse: Using gfp_t consistently instead of int.
- sparse: removing functions not actually used.
- checkpatch: Clean up printk() warnings by using pr_info(), etc.;
  also avoid partial-line printks except in bootup code.
  - checkpatch: Use exposed structs rather than typedefs.
  - checkpatch: Change some C99 comments to C89 comments.

In addition, a couple of minor other changes are rolled in
to this commit:

- Add support for a "raise" instruction to cause SIGFPE, etc., to be raised.
- Remove some compat code that is unnecessary when we fully eliminate
  some of the deprecated syscalls from the generic syscall ABI.
- Update the tile_defconfig to reflect current config contents.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 26 insertions, 0 deletions

diff --git a/arch/tile/include/asm/traps.h b/arch/tile/include/asm/traps.h
index eab33d4a917d..432a9c15c8a2 100644
--- a/arch/tile/include/asm/traps.h
+++ b/arch/tile/include/asm/traps.h
@@ -18,9 +18,28 @@
 /* mm/fault.c */
 void do_page_fault(struct pt_regs *, int fault_num,
 		   unsigned long address, unsigned long write);
+void do_async_page_fault(struct pt_regs *);
+
+#ifndef __tilegx__
+/*
+ * We return this structure in registers to avoid having to write
+ * additional save/restore code in the intvec.S caller.
+ */
+struct intvec_state {
+	void *handler;
+	unsigned long vecnum;
+	unsigned long fault_num;
+	unsigned long info;
+	unsigned long retval;
+};
+struct intvec_state do_page_fault_ics(struct pt_regs *regs, int fault_num,
+				      unsigned long address,
+				      unsigned long info);
+#endif
 
 /* kernel/traps.c */
 void do_trap(struct pt_regs *, int fault_num, unsigned long reason);
+void kernel_double_fault(int dummy, ulong pc, ulong lr, ulong sp, ulong r52);
 
 /* kernel/time.c */
 void do_timer_interrupt(struct pt_regs *, int fault_num);
@@ -31,6 +50,13 @@ void hv_message_intr(struct pt_regs *, int intnum);
 /* kernel/irq.c */
 void tile_dev_intr(struct pt_regs *, int intnum);
 
+#ifdef CONFIG_HARDWALL
+/* kernel/hardwall.c */
+void do_hardwall_trap(struct pt_regs *, int fault_num);
+#endif
+
+/* kernel/ptrace.c */
+void do_breakpoint(struct pt_regs *, int fault_num);
 
 
 #endif /* _ASM_TILE_SYSCALLS_H */