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Commit 3b74d18e authored by akpm@linux-foundation.org's avatar akpm@linux-foundation.org Committed by Tony Luck
Browse files

[IA64] rename partial_page 



Jens has added a partial_page thing in splice whcih conflicts with the ia64
one.  Rename ia64 out of the way.  (ia64 chose poorly).

Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent a07ee862

arch/ia64/ia32/ia32_support.c

+4 −4
Original line number Diff line number Diff line
@@ -249,10 +249,10 @@ ia32_init (void) 


#if PAGE_SHIFT > IA32_PAGE_SHIFT

	{

		extern struct kmem_cache *partial_page_cachep;

		extern struct kmem_cache *ia64_partial_page_cachep;



		partial_page_cachep = kmem_cache_create("partial_page_cache",

						sizeof(struct partial_page),

		ia64_partial_page_cachep = kmem_cache_create("ia64_partial_page_cache",

					sizeof(struct ia64_partial_page),

					0, SLAB_PANIC, NULL);

	}

#endif

arch/ia64/ia32/ia32priv.h

+6 −6
Original line number Diff line number Diff line
@@ -25,8 +25,8 @@ 
 * partially mapped pages provide precise accounting of which 4k sub pages

 * are mapped and which ones are not, thereby improving IA-32 compatibility.

 */

struct partial_page {

	struct partial_page	*next; /* linked list, sorted by address */

struct ia64_partial_page {

	struct ia64_partial_page *next; /* linked list, sorted by address */

	struct rb_node		pp_rb;

	/* 64K is the largest "normal" page supported by ia64 ABI. So 4K*64

	 * should suffice.*/
@@ -34,17 +34,17 @@ struct partial_page { 
	unsigned int		base;

};



struct partial_page_list {

	struct partial_page	*pp_head; /* list head, points to the lowest

struct ia64_partial_page_list {

	struct ia64_partial_page *pp_head; /* list head, points to the lowest

					   * addressed partial page */

	struct rb_root		ppl_rb;

	struct partial_page	*pp_hint; /* pp_hint->next is the last

	struct ia64_partial_page *pp_hint; /* pp_hint->next is the last

					   * accessed partial page */

	atomic_t		pp_count; /* reference count */

};



#if PAGE_SHIFT > IA32_PAGE_SHIFT

struct partial_page_list* ia32_init_pp_list (void);

struct ia64_partial_page_list* ia32_init_pp_list (void);

#else

# define ia32_init_pp_list()	0

#endif

arch/ia64/ia32/sys_ia32.c

+41 −40
Original line number Diff line number Diff line
@@ -253,17 +253,17 @@ mmap_subpage (struct file *file, unsigned long start, unsigned long end, int pro 
	return ret;

}



/* SLAB cache for partial_page structures */

struct kmem_cache *partial_page_cachep;

/* SLAB cache for ia64_partial_page structures */

struct kmem_cache *ia64_partial_page_cachep;



/*

 * init partial_page_list.

 * init ia64_partial_page_list.

 * return 0 means kmalloc fail.

 */

struct partial_page_list*

struct ia64_partial_page_list*

ia32_init_pp_list(void)

{

	struct partial_page_list *p;

	struct ia64_partial_page_list *p;



	if ((p = kmalloc(sizeof(*p), GFP_KERNEL)) == NULL)

		return p;
@@ -280,12 +280,12 @@ ia32_init_pp_list(void) 
 * Else, return 0 and provide @pprev, @rb_link, @rb_parent to

 * be used by later __ia32_insert_pp().

 */

static struct partial_page *

__ia32_find_pp(struct partial_page_list *ppl, unsigned int start,

	struct partial_page **pprev, struct rb_node ***rb_link,

static struct ia64_partial_page *

__ia32_find_pp(struct ia64_partial_page_list *ppl, unsigned int start,

	struct ia64_partial_page **pprev, struct rb_node ***rb_link,

	struct rb_node **rb_parent)

{

	struct partial_page *pp;

	struct ia64_partial_page *pp;

	struct rb_node **__rb_link, *__rb_parent, *rb_prev;



	pp = ppl->pp_hint;
@@ -297,7 +297,7 @@ __ia32_find_pp(struct partial_page_list *ppl, unsigned int start, 


	while (*__rb_link) {

		__rb_parent = *__rb_link;

		pp = rb_entry(__rb_parent, struct partial_page, pp_rb);

		pp = rb_entry(__rb_parent, struct ia64_partial_page, pp_rb);



		if (pp->base == start) {

			ppl->pp_hint = pp;
@@ -314,7 +314,7 @@ __ia32_find_pp(struct partial_page_list *ppl, unsigned int start, 
	*rb_parent = __rb_parent;

	*pprev = NULL;

	if (rb_prev)

		*pprev = rb_entry(rb_prev, struct partial_page, pp_rb);

		*pprev = rb_entry(rb_prev, struct ia64_partial_page, pp_rb);

	return NULL;

}
@@ -322,9 +322,9 @@ __ia32_find_pp(struct partial_page_list *ppl, unsigned int start, 
 * insert @pp into @ppl.

 */

static void

__ia32_insert_pp(struct partial_page_list *ppl, struct partial_page *pp,

	 struct partial_page *prev, struct rb_node **rb_link,

	struct rb_node *rb_parent)

__ia32_insert_pp(struct ia64_partial_page_list *ppl,

	struct ia64_partial_page *pp, struct ia64_partial_page *prev,

	struct rb_node **rb_link, struct rb_node *rb_parent)

{

	/* link list */

	if (prev) {
@@ -334,7 +334,7 @@ __ia32_insert_pp(struct partial_page_list *ppl, struct partial_page *pp, 
		ppl->pp_head = pp;

		if (rb_parent)

			pp->next = rb_entry(rb_parent,

				struct partial_page, pp_rb);

				struct ia64_partial_page, pp_rb);

		else

			pp->next = NULL;

	}
@@ -350,8 +350,8 @@ __ia32_insert_pp(struct partial_page_list *ppl, struct partial_page *pp, 
 * delete @pp from partial page list @ppl.

 */

static void

__ia32_delete_pp(struct partial_page_list *ppl, struct partial_page *pp,

	struct partial_page *prev)

__ia32_delete_pp(struct ia64_partial_page_list *ppl,

	struct ia64_partial_page *pp, struct ia64_partial_page *prev)

{

	if (prev) {

		prev->next = pp->next;
@@ -363,15 +363,15 @@ __ia32_delete_pp(struct partial_page_list *ppl, struct partial_page *pp, 
			ppl->pp_hint = pp->next;

	}

	rb_erase(&pp->pp_rb, &ppl->ppl_rb);

	kmem_cache_free(partial_page_cachep, pp);

	kmem_cache_free(ia64_partial_page_cachep, pp);

}



static struct partial_page *

__pp_prev(struct partial_page *pp)

static struct ia64_partial_page *

__pp_prev(struct ia64_partial_page *pp)

{

	struct rb_node *prev = rb_prev(&pp->pp_rb);

	if (prev)

		return rb_entry(prev, struct partial_page, pp_rb);

		return rb_entry(prev, struct ia64_partial_page, pp_rb);

	else

		return NULL;

}
@@ -383,7 +383,7 @@ __pp_prev(struct partial_page *pp) 
static void

__ia32_delete_pp_range(unsigned int start, unsigned int end)

{

	struct partial_page *pp, *prev;

	struct ia64_partial_page *pp, *prev;

	struct rb_node **rb_link, *rb_parent;



	if (start >= end)
@@ -401,7 +401,7 @@ __ia32_delete_pp_range(unsigned int start, unsigned int end) 
	}



	while (pp && pp->base < end) {

		struct partial_page *tmp = pp->next;

		struct ia64_partial_page *tmp = pp->next;

		__ia32_delete_pp(current->thread.ppl, pp, prev);

		pp = tmp;

	}
@@ -414,7 +414,7 @@ __ia32_delete_pp_range(unsigned int start, unsigned int end) 
static int

__ia32_set_pp(unsigned int start, unsigned int end, int flags)

{

	struct partial_page *pp, *prev;

	struct ia64_partial_page *pp, *prev;

	struct rb_node ** rb_link, *rb_parent;

	unsigned int pstart, start_bit, end_bit, i;
@@ -450,8 +450,8 @@ __ia32_set_pp(unsigned int start, unsigned int end, int flags) 
			return 0;

	}



	/* new a partial_page */

	pp = kmem_cache_alloc(partial_page_cachep, GFP_KERNEL);

	/* new a ia64_partial_page */

	pp = kmem_cache_alloc(ia64_partial_page_cachep, GFP_KERNEL);

	if (!pp)

		return -ENOMEM;

	pp->base = pstart;
@@ -504,7 +504,7 @@ ia32_set_pp(unsigned int start, unsigned int end, int flags) 
static int

__ia32_unset_pp(unsigned int start, unsigned int end)

{

	struct partial_page *pp, *prev;

	struct ia64_partial_page *pp, *prev;

	struct rb_node ** rb_link, *rb_parent;

	unsigned int pstart, start_bit, end_bit, i;

	struct vm_area_struct *vma;
@@ -532,8 +532,8 @@ __ia32_unset_pp(unsigned int start, unsigned int end) 
		return -ENOMEM;

	}



	/* new a partial_page */

	pp = kmem_cache_alloc(partial_page_cachep, GFP_KERNEL);

	/* new a ia64_partial_page */

	pp = kmem_cache_alloc(ia64_partial_page_cachep, GFP_KERNEL);

	if (!pp)

		return -ENOMEM;

	pp->base = pstart;
@@ -605,7 +605,7 @@ ia32_unset_pp(unsigned int *startp, unsigned int *endp) 
static int

__ia32_compare_pp(unsigned int start, unsigned int end)

{

	struct partial_page *pp, *prev;

	struct ia64_partial_page *pp, *prev;

	struct rb_node ** rb_link, *rb_parent;

	unsigned int pstart, start_bit, end_bit, size;

	unsigned int first_bit, next_zero_bit;	/* the first range in bitmap */
@@ -682,13 +682,13 @@ ia32_compare_pp(unsigned int *startp, unsigned int *endp) 
}



static void

__ia32_drop_pp_list(struct partial_page_list *ppl)

__ia32_drop_pp_list(struct ia64_partial_page_list *ppl)

{

	struct partial_page *pp = ppl->pp_head;

	struct ia64_partial_page *pp = ppl->pp_head;



	while (pp) {

		struct partial_page *next = pp->next;

		kmem_cache_free(partial_page_cachep, pp);

		struct ia64_partial_page *next = pp->next;

		kmem_cache_free(ia64_partial_page_cachep, pp);

		pp = next;

	}
@@ -696,9 +696,9 @@ __ia32_drop_pp_list(struct partial_page_list *ppl) 
}



void

ia32_drop_partial_page_list(struct task_struct *task)

ia32_drop_ia64_partial_page_list(struct task_struct *task)

{

	struct partial_page_list* ppl = task->thread.ppl;

	struct ia64_partial_page_list* ppl = task->thread.ppl;



	if (ppl && atomic_dec_and_test(&ppl->pp_count))

		__ia32_drop_pp_list(ppl);
@@ -708,9 +708,9 @@ ia32_drop_partial_page_list(struct task_struct *task) 
 * Copy current->thread.ppl to ppl (already initialized).

 */

static int

__ia32_copy_pp_list(struct partial_page_list *ppl)

__ia32_copy_pp_list(struct ia64_partial_page_list *ppl)

{

	struct partial_page *pp, *tmp, *prev;

	struct ia64_partial_page *pp, *tmp, *prev;

	struct rb_node **rb_link, *rb_parent;



	ppl->pp_head = NULL;
@@ -721,7 +721,7 @@ __ia32_copy_pp_list(struct partial_page_list *ppl) 
	prev = NULL;



	for (pp = current->thread.ppl->pp_head; pp; pp = pp->next) {

		tmp = kmem_cache_alloc(partial_page_cachep, GFP_KERNEL);

		tmp = kmem_cache_alloc(ia64_partial_page_cachep, GFP_KERNEL);

		if (!tmp)

			return -ENOMEM;

		*tmp = *pp;
@@ -734,7 +734,8 @@ __ia32_copy_pp_list(struct partial_page_list *ppl) 
}



int

ia32_copy_partial_page_list(struct task_struct *p, unsigned long clone_flags)

ia32_copy_ia64_partial_page_list(struct task_struct *p,

				unsigned long clone_flags)

{

	int retval = 0;

arch/ia64/kernel/process.c

+4 −3
Original line number Diff line number Diff line
@@ -499,7 +499,8 @@ copy_thread (int nr, unsigned long clone_flags, 


		/* Copy partially mapped page list */

		if (!retval)

			retval = ia32_copy_partial_page_list(p, clone_flags);

			retval = ia32_copy_ia64_partial_page_list(p,

								clone_flags);

	}

#endif
@@ -728,7 +729,7 @@ flush_thread (void) 
	ia64_drop_fpu(current);

#ifdef CONFIG_IA32_SUPPORT

	if (IS_IA32_PROCESS(task_pt_regs(current))) {

		ia32_drop_partial_page_list(current);

		ia32_drop_ia64_partial_page_list(current);

		current->thread.task_size = IA32_PAGE_OFFSET;

		set_fs(USER_DS);

	}
@@ -754,7 +755,7 @@ exit_thread (void) 
		pfm_release_debug_registers(current);

#endif

	if (IS_IA32_PROCESS(task_pt_regs(current)))

		ia32_drop_partial_page_list(current);

		ia32_drop_ia64_partial_page_list(current);

}



unsigned long

include/asm-ia64/ia32.h

+5 −4
Original line number Diff line number Diff line
@@ -27,11 +27,12 @@ extern int ia32_clone_tls (struct task_struct *child, struct pt_regs *childregs) 
extern int ia32_setup_frame1 (int sig, struct k_sigaction *ka, siginfo_t *info,

			      sigset_t *set, struct pt_regs *regs);

#if PAGE_SHIFT > IA32_PAGE_SHIFT

extern int ia32_copy_partial_page_list (struct task_struct *, unsigned long);

extern void ia32_drop_partial_page_list (struct task_struct *);

extern int ia32_copy_ia64_partial_page_list(struct task_struct *,

					unsigned long);

extern void ia32_drop_ia64_partial_page_list(struct task_struct *);

#else

# define ia32_copy_partial_page_list(a1, a2)	0

# define ia32_drop_partial_page_list(a1)	do { ; } while (0)

# define ia32_copy_ia64_partial_page_list(a1, a2)	0

# define ia32_drop_ia64_partial_page_list(a1)	do { ; } while (0)

#endif



#endif /* !__ASSEMBLY__ */