[PATCH] comment cleanups for cpu affinity syscall

A few (anal) comment cleanups and additions in relationship to the new
task cpu affinity syscalls.  All no brainers.

include/linux/capability.h

@@ -242,6 +242,7 @@ typedef __u32 kernel_cap_t;
 /* Allow use of FIFO and round-robin (realtime) scheduling on own
    processes and setting the scheduling algorithm used by another
    process. */
+/* Allow setting cpu affinity on other processes */
 
 #define CAP_SYS_NICE         23
 

kernel/sched.c

@@ -1237,11 +1237,11 @@ asmlinkage long sys_sched_getparam(pid_t pid, struct sched_param *param)
 /**
  * sys_sched_setaffinity - set the cpu affinity of a process
  * @pid: pid of the process
- * @len: length of new_mask
- * @new_mask: user-space pointer to the new cpu mask
+ * @len: length of the bitmask pointed to by user_mask_ptr
+ * @user_mask_ptr: user-space pointer to the new cpu mask
  */
 asmlinkage int sys_sched_setaffinity(pid_t pid, unsigned int len,
-				      unsigned long *new_mask_ptr)
+				      unsigned long *user_mask_ptr)
 {
 	unsigned long new_mask;
 	task_t *p;
@@ -1250,7 +1250,7 @@ asmlinkage int sys_sched_setaffinity(pid_t pid, unsigned int len,
 	if (len < sizeof(new_mask))
 		return -EINVAL;
 
-	if (copy_from_user(&new_mask, new_mask_ptr, sizeof(new_mask)))
+	if (copy_from_user(&new_mask, user_mask_ptr, sizeof(new_mask)))
 		return -EFAULT;
 
 	new_mask &= cpu_online_map;
@@ -1289,8 +1289,8 @@ asmlinkage int sys_sched_setaffinity(pid_t pid, unsigned int len,
 /**
  * sys_sched_getaffinity - get the cpu affinity of a process
  * @pid: pid of the process
- * @len: length of the new mask
- * @user_mask_ptr: userspace pointer to the mask
+ * @len: length of the bitmask pointed to by user_mask_ptr
+ * @user_mask_ptr: user-space pointer to hold the current cpu mask
  */
 asmlinkage int sys_sched_getaffinity(pid_t pid, unsigned int len,
 				      unsigned long *user_mask_ptr)