Commit 78aa1f66 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Ingo Molnar
Browse files

x86: clean up arch/x86/kernel/ldt_32/64.c 



White space and coding style clenaup.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 2f36fa13

arch/x86/kernel/ldt_32.c

+33 −27
Original line number Diff line number Diff line
@@ -17,7 +17,7 @@ 
#include <asm/desc.h>

#include <asm/mmu_context.h>



#ifdef CONFIG_SMP /* avoids "defined but not used" warnig */

#ifdef CONFIG_SMP

static void flush_ldt(void *null)

{

	if (current->active_mm)
@@ -46,7 +46,8 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload) 
	if (oldsize)

		memcpy(newldt, pc->ldt, oldsize * LDT_ENTRY_SIZE);

	oldldt = pc->ldt;

	memset(newldt+oldsize*LDT_ENTRY_SIZE, 0, (mincount-oldsize)*LDT_ENTRY_SIZE);

	memset(newldt + oldsize * LDT_ENTRY_SIZE, 0,

	       (mincount - oldsize) * LDT_ENTRY_SIZE);

	pc->ldt = newldt;

	wmb();

	pc->size = mincount;
@@ -55,6 +56,7 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload) 
	if (reload) {

#ifdef CONFIG_SMP

		cpumask_t mask;



		preempt_disable();

		load_LDT(pc);

		mask = cpumask_of_cpu(smp_processor_id());
@@ -77,6 +79,7 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload) 
static inline int copy_ldt(mm_context_t *new, mm_context_t *old)

{

	int err = alloc_ldt(new, old->size, 0);



	if (err < 0)

		return err;

	memcpy(new->ldt, old->ldt, old->size * LDT_ENTRY_SIZE);
@@ -196,7 +199,8 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode) 


	mutex_lock(&mm->context.lock);

	if (ldt_info.entry_number >= mm->context.size) {

		error = alloc_ldt(&current->mm->context, ldt_info.entry_number+1, 1);

		error = alloc_ldt(&current->mm->context,

				  ldt_info.entry_number + 1, 1);

		if (error < 0)

			goto out_unlock;

	}
@@ -217,7 +221,8 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode) 


	/* Install the new entry ...  */

install:

	write_ldt_entry(mm->context.ldt, ldt_info.entry_number, entry_1, entry_2);

	write_ldt_entry(mm->context.ldt, ldt_info.entry_number, entry_1,

			entry_2);

	error = 0;



out_unlock:
@@ -226,7 +231,8 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode) 
	return error;

}



asmlinkage int sys_modify_ldt(int func, void __user *ptr, unsigned long bytecount)

asmlinkage int sys_modify_ldt(int func, void __user *ptr,

			      unsigned long bytecount)

{

	int ret = -ENOSYS;

arch/x86/kernel/ldt_64.c

+36 −33
Original line number Diff line number Diff line
@@ -20,7 +20,7 @@ 
#include <asm/desc.h>

#include <asm/proto.h>



#ifdef CONFIG_SMP /* avoids "defined but not used" warnig */

#ifdef CONFIG_SMP

static void flush_ldt(void *null)

{

	if (current->active_mm)
@@ -49,7 +49,8 @@ static int alloc_ldt(mm_context_t *pc, unsigned mincount, int reload) 
	if (oldsize)

		memcpy(newldt, pc->ldt, oldsize * LDT_ENTRY_SIZE);

	oldldt = pc->ldt;

	memset(newldt+oldsize*LDT_ENTRY_SIZE, 0, (mincount-oldsize)*LDT_ENTRY_SIZE);

	memset(newldt + oldsize * LDT_ENTRY_SIZE, 0,

	       (mincount - oldsize) * LDT_ENTRY_SIZE);

	wmb();

	pc->ldt = newldt;

	wmb();
@@ -81,6 +82,7 @@ static int alloc_ldt(mm_context_t *pc, unsigned mincount, int reload) 
static inline int copy_ldt(mm_context_t *new, mm_context_t *old)

{

	int err = alloc_ldt(new, old->size, 0);



	if (err < 0)

		return err;

	memcpy(new->ldt, old->ldt, old->size * LDT_ENTRY_SIZE);
@@ -108,7 +110,6 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm) 
}



/*

 * 

 * Don't touch the LDT register - we're already in the next thread.

 */

void destroy_context(struct mm_struct *mm)
@@ -195,7 +196,8 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode) 


	mutex_lock(&mm->context.lock);

	if (ldt_info.entry_number >= (unsigned)mm->context.size) {

		error = alloc_ldt(&current->mm->context, ldt_info.entry_number+1, 1);

		error = alloc_ldt(&current->mm->context,

				  ldt_info.entry_number + 1, 1);

		if (error < 0)

			goto out_unlock;

	}
@@ -228,7 +230,8 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int oldmode) 
	return error;

}



asmlinkage int sys_modify_ldt(int func, void __user *ptr, unsigned long bytecount)

asmlinkage int sys_modify_ldt(int func, void __user *ptr,

			      unsigned long bytecount)

{

	int ret = -ENOSYS;