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, 4 insertions, 5 deletions

diff --git a/arch/tile/include/asm/unistd.h b/arch/tile/include/asm/unistd.h
index 03b3d5d..f2e3ff4 100644
--- a/arch/tile/include/asm/unistd.h
+++ b/arch/tile/include/asm/unistd.h
@@ -15,7 +15,6 @@
 #if !defined(_ASM_TILE_UNISTD_H) || defined(__SYSCALL)
 #define _ASM_TILE_UNISTD_H
 
-
 #ifndef __LP64__
 /* Use the flavor of this syscall that matches the 32-bit API better. */
 #define __ARCH_WANT_SYNC_FILE_RANGE2
@@ -24,6 +23,10 @@
 /* Use the standard ABI for syscalls. */
 #include <asm-generic/unistd.h>
 
+/* Additional Tilera-specific syscalls. */
+#define __NR_flush_cache	(__NR_arch_specific_syscall + 1)
+__SYSCALL(__NR_flush_cache, sys_flush_cache)
+
 #ifndef __tilegx__
 /* "Fast" syscalls provide atomic support for 32-bit chips. */
 #define __NR_FAST_cmpxchg	-1
@@ -33,10 +36,6 @@
 __SYSCALL(__NR_cmpxchg_badaddr, sys_cmpxchg_badaddr)
 #endif
 
-/* Additional Tilera-specific syscalls. */
-#define __NR_flush_cache	(__NR_arch_specific_syscall + 1)
-__SYSCALL(__NR_flush_cache, sys_flush_cache)
-
 #ifdef __KERNEL__
 /* In compat mode, we use sys_llseek() for compat_sys_llseek(). */
 #ifdef CONFIG_COMPAT