linux-kernel - [PATCH v2 1/4] mn10300: let exit

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Date:	Thu, 31 Mar 2016 09:55:52 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org, Jiri Slaby <jslaby@...e.cz>,
	David Howells <dhowells@...hat.com>, linux-am33-list@...hat.com
Subject: [PATCH v2 1/4] mn10300: let exit_fpu accept a task

We need to call exit_thread from copy_process in a fail path. Since
exit_thread on mn10300 calls exit_thread_runtime_instr, make it accept
task_struct as a parameter now.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: David Howells <dhowells@...hat.com>
Cc: linux-am33-list@...hat.com
---
 arch/mn10300/include/asm/fpu.h | 6 ++----
 arch/mn10300/kernel/process.c  | 2 +-
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/arch/mn10300/include/asm/fpu.h b/arch/mn10300/include/asm/fpu.h
index 738ff72659d5..a47e995d45f3 100644
--- a/arch/mn10300/include/asm/fpu.h
+++ b/arch/mn10300/include/asm/fpu.h
@@ -76,11 +76,9 @@ static inline void unlazy_fpu(struct task_struct *tsk)
 	preempt_enable();
 }
 
-static inline void exit_fpu(void)
+static inline void exit_fpu(struct task_struct *tsk)
 {
 #ifdef CONFIG_LAZY_SAVE_FPU
-	struct task_struct *tsk = current;
-
 	preempt_disable();
 	if (fpu_state_owner == tsk)
 		fpu_state_owner = NULL;
@@ -123,7 +121,7 @@ static inline void fpu_init_state(void) {}
 static inline void fpu_save(struct fpu_state_struct *s) {}
 static inline void fpu_kill_state(struct task_struct *tsk) {}
 static inline void unlazy_fpu(struct task_struct *tsk) {}
-static inline void exit_fpu(void) {}
+static inline void exit_fpu(struct task_struct *tsk) {}
 static inline void flush_fpu(void) {}
 static inline int fpu_setup_sigcontext(struct fpucontext *buf) { return 0; }
 static inline int fpu_restore_sigcontext(struct fpucontext *buf) { return 0; }
diff --git a/arch/mn10300/kernel/process.c b/arch/mn10300/kernel/process.c
index 3707da583d05..74a96ccf7451 100644
--- a/arch/mn10300/kernel/process.c
+++ b/arch/mn10300/kernel/process.c
@@ -105,7 +105,7 @@ void show_regs(struct pt_regs *regs)
  */
 void exit_thread(void)
 {
-	exit_fpu();
+	exit_fpu(current);
 }
 
 void flush_thread(void)
-- 
2.7.4