From: Ingo Molnar <mingo@kernel.org>
Date: Wed, 22 Apr 2015 13:41:56 +0000 (+0200)
Subject: x86/fpu: Move task_xstate_cachep handling to core.c
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~203^2~218
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ffb53ab986ccb4421b1060182c6e084edd7b9d8;p=pandora-kernel.git

x86/fpu: Move task_xstate_cachep handling to core.c

This code was historically in process.c, now we have FPU core internals in
fpu/core.c instead - move it there.

Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h
index 95e04cb1ed2f..f41170c6d376 100644
--- a/arch/x86/include/asm/fpu-internal.h
+++ b/arch/x86/include/asm/fpu-internal.h
@@ -564,6 +564,8 @@ static inline unsigned short get_fpu_mxcsr(struct task_struct *tsk)
 	}
 }
 
+extern void fpstate_cache_init(void);
+
 extern int fpstate_alloc(struct fpu *fpu);
 
 static inline void fpstate_free(struct fpu *fpu)
diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 15c3cf7bd160..b32a6eb7f189 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -147,6 +147,21 @@ void fpstate_init(struct fpu *fpu)
 }
 EXPORT_SYMBOL_GPL(fpstate_init);
 
+/*
+ * FPU state allocation:
+ */
+struct kmem_cache *task_xstate_cachep;
+EXPORT_SYMBOL_GPL(task_xstate_cachep);
+
+void fpstate_cache_init(void)
+{
+	task_xstate_cachep =
+		kmem_cache_create("task_xstate", xstate_size,
+				  __alignof__(union thread_xstate),
+				  SLAB_PANIC | SLAB_NOTRACK, NULL);
+	setup_xstate_comp();
+}
+
 int fpstate_alloc(struct fpu *fpu)
 {
 	if (fpu->state)
Reading git-diff-tree failed