[PATCH] ppc64: add ioprio syscalls

- Clean up sys32_getpriority comment.
- Add ioprio syscalls, and sign extend 32bit versions.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 25 insertions, 12 deletions

diff --git a/arch/ppc64/kernel/misc.S b/arch/ppc64/kernel/misc.S
index f3dea0c5a88c..59f4f9973818 100644
--- a/arch/ppc64/kernel/misc.S
+++ b/arch/ppc64/kernel/misc.S
@@ -1124,9 +1124,11 @@ _GLOBAL(sys_call_table32)
         .llong .compat_sys_mq_getsetattr
         .llong .compat_sys_kexec_load
         .llong .sys32_add_key
-        .llong .sys32_request_key
+        .llong .sys32_request_key       /* 270 */
         .llong .compat_sys_keyctl
         .llong .compat_sys_waitid
+        .llong .sys32_ioprio_set
+        .llong .sys32_ioprio_get
 
         .balign 8
 _GLOBAL(sys_call_table)
@@ -1403,3 +1405,5 @@ _GLOBAL(sys_call_table)
         .llong .sys_request_key         /* 270 */
         .llong .sys_keyctl
         .llong .sys_waitid
+        .llong .sys_ioprio_set
+        .llong .sys_ioprio_get
diff --git a/arch/ppc64/kernel/sys_ppc32.c b/arch/ppc64/kernel/sys_ppc32.c
index 9bd16cef0ed4..206619080e66 100644
--- a/arch/ppc64/kernel/sys_ppc32.c
+++ b/arch/ppc64/kernel/sys_ppc32.c
@@ -822,16 +822,6 @@ asmlinkage long sys32_getpgid(u32 pid)
 }
 
 
-/* Note: it is necessary to treat which and who as unsigned ints,
- * with the corresponding cast to a signed int to insure that the 
- * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
- * and the register representation of a signed int (msr in 64-bit mode) is performed.
- */
-asmlinkage long sys32_getpriority(u32 which, u32 who)
-{
-        return sys_getpriority((int)which, (int)who);
-}
-
 
 /* Note: it is necessary to treat pid as an unsigned int,
  * with the corresponding cast to a signed int to insure that the 
@@ -1023,6 +1013,11 @@ asmlinkage long sys32_setpgid(u32 pid, u32 pgid)
         return sys_setpgid((int)pid, (int)pgid);
 }
 
+long sys32_getpriority(u32 which, u32 who)
+{
+        /* sign extend which and who */
+        return sys_getpriority((int)which, (int)who);
+}
 
 long sys32_setpriority(u32 which, u32 who, u32 niceval)
 {
@@ -1030,6 +1025,18 @@ long sys32_setpriority(u32 which, u32 who, u32 niceval)
         return sys_setpriority((int)which, (int)who, (int)niceval);
 }
 
+long sys32_ioprio_get(u32 which, u32 who)
+{
+        /* sign extend which and who */
+        return sys_ioprio_get((int)which, (int)who);
+}
+
+long sys32_ioprio_set(u32 which, u32 who, u32 ioprio)
+{
+        /* sign extend which, who and ioprio */
+        return sys_ioprio_set((int)which, (int)who, (int)ioprio);
+}
+
 /* Note: it is necessary to treat newmask as an unsigned int,
  * with the corresponding cast to a signed int to insure that the 
  * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
diff --git a/include/asm-ppc64/unistd.h b/include/asm-ppc64/unistd.h
index 605d91e011ec..53fc662d8009 100644
--- a/include/asm-ppc64/unistd.h
+++ b/include/asm-ppc64/unistd.h
@@ -283,8 +283,10 @@
 #define __NR_request_key        270
 #define __NR_keyctl             271
 #define __NR_waitid             272
+#define __NR_ioprio_set         273
+#define __NR_ioprio_get         274
 
-#define __NR_syscalls           273
+#define __NR_syscalls           275
 #ifdef __KERNEL__
 #define NR_syscalls     __NR_syscalls
 #endif