uml: current.h cleanup

Tidy current-related stuff.  There was a comment in current.h saying
that current_thread was obsolete, so this patch turns all instances of
current_thread into current_thread_info().  There's some simplifying
of the result in arch/um/sys-i386/signal.c.

current.h and thread_info also get style cleanups.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 8 insertions, 10 deletions

diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c
index 19053d46cb60..fd0c25ad6af3 100644
--- a/arch/um/sys-i386/signal.c
+++ b/arch/um/sys-i386/signal.c
@@ -168,12 +168,13 @@ static int copy_sc_from_user(struct pt_regs *regs,
 			     struct sigcontext __user *from)
 {
 	struct sigcontext sc;
-	int err;
+	int err, pid;
 
 	err = copy_from_user(&sc, from, sizeof(sc));
 	if (err)
 		return err;
 
+	pid = userspace_pid[current_thread_info()->cpu];
 	copy_sc(&regs->regs, &sc);
 	if (have_fpx_regs) {
 		struct user_fxsr_struct fpx;
@@ -187,8 +188,7 @@ static int copy_sc_from_user(struct pt_regs *regs,
 		if (err)
 			return 1;
 
-		err = restore_fpx_registers(userspace_pid[current_thread->cpu],
-					    (unsigned long *) &fpx);
+		err = restore_fpx_registers(pid, (unsigned long *) &fpx);
 		if (err < 0) {
 			printk(KERN_ERR "copy_sc_from_user - "
 			       "restore_fpx_registers failed, errno = %d\n",
@@ -204,8 +204,7 @@ static int copy_sc_from_user(struct pt_regs *regs,
 		if (err)
 			return 1;
 
-		err = restore_fp_registers(userspace_pid[current_thread->cpu],
-					   (unsigned long *) &fp);
+		err = restore_fp_registers(pid, (unsigned long *) &fp);
 		if (err < 0) {
 			printk(KERN_ERR "copy_sc_from_user - "
 			       "restore_fp_registers failed, errno = %d\n",
@@ -223,7 +222,7 @@ static int copy_sc_to_user(struct sigcontext __user *to,
 {
 	struct sigcontext sc;
 	struct faultinfo * fi = &current->thread.arch.faultinfo;
-	int err;
+	int err, pid;
 
 	sc.gs = REGS_GS(regs->regs.gp);
 	sc.fs = REGS_FS(regs->regs.gp);
@@ -249,11 +248,11 @@ static int copy_sc_to_user(struct sigcontext __user *to,
 	to_fp = (to_fp ? to_fp : (struct _fpstate __user *) (to + 1));
 	sc.fpstate = to_fp;
 
+	pid = userspace_pid[current_thread_info()->cpu];
 	if (have_fpx_regs) {
 		struct user_fxsr_struct fpx;
 
-		err = save_fpx_registers(userspace_pid[current_thread->cpu],
-					 (unsigned long *) &fpx);
+		err = save_fpx_registers(pid, (unsigned long *) &fpx);
 		if (err < 0){
 			printk(KERN_ERR "copy_sc_to_user - save_fpx_registers "
 			       "failed, errno = %d\n", err);
@@ -276,8 +275,7 @@ static int copy_sc_to_user(struct sigcontext __user *to,
 	else {
 		struct user_i387_struct fp;
 
-		err = save_fp_registers(userspace_pid[current_thread->cpu],
-					(unsigned long *) &fp);
+		err = save_fp_registers(pid, (unsigned long *) &fp);
 		if (copy_to_user(to_fp, &fp, sizeof(struct user_i387_struct)))
 			return 1;
 	}