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, 6 insertions, 0 deletions

diff --git a/arch/tile/include/asm/stack.h b/arch/tile/include/asm/stack.h
index 864913bcfbc9..f908473c322d 100644
--- a/arch/tile/include/asm/stack.h
+++ b/arch/tile/include/asm/stack.h
@@ -48,6 +48,10 @@ extern void KBacktraceIterator_init(struct KBacktraceIterator *kbt,
 /* Initialize iterator based on current stack. */
 extern void KBacktraceIterator_init_current(struct KBacktraceIterator *kbt);
 
+/* Helper method for above. */
+extern void _KBacktraceIterator_init_current(struct KBacktraceIterator *kbt,
+                                ulong pc, ulong lr, ulong sp, ulong r52);
+
 /* No more frames? */
 extern int KBacktraceIterator_end(struct KBacktraceIterator *kbt);
 
@@ -64,5 +68,7 @@ extern void tile_show_stack(struct KBacktraceIterator *, int headers);
 /* Dump stack of current process, with registers to seed the backtrace. */
 extern void dump_stack_regs(struct pt_regs *);
 
+/* Helper method for assembly dump_stack(). */
+extern void _dump_stack(int dummy, ulong pc, ulong lr, ulong sp, ulong r52);
 
 #endif /* _ASM_TILE_STACK_H */