WebSVN – HelenOS-historic – Diff – /SPARTAN/trunk/src/mm/frame.c


/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <arch/types.h>
#include <func.h>
 
#include <mm/heap.h>
#include <mm/frame.h>
#include <mm/page.h>
#include <mm/vm.h>
#include <arch/mm/page.h>
 
#include <config.h>
#include <memstr.h>
 
#include <panic.h>
 
#include <synch/spinlock.h>
 
__u32 frames;
__u32 frames_free;
 
__u8 *frame_bitmap;
__u32 frame_bitmap_octets;
 
/*
 * This is for kernel address space frames (allocated with FRAME_KA).
 * Their addresses may not interfere with user address space.
 */
__u8 *frame_kernel_bitmap;
__u32 kernel_frames;
__u32 kernel_frames_free;
 
static spinlock_t framelock;
 
void frame_init(void)
{
        if (config.cpu_active == 1) {
 
                /*
                 * The bootstrap processor will allocate all necessary memory for frame allocation.
                 */
 
                frames = config.memory_size / FRAME_SIZE;
                frame_bitmap_octets = frames / 8 + (frames % 8 > 0);
 
                frame_bitmap = (__u8 *) malloc(frame_bitmap_octets);
                if (!frame_bitmap)
                        panic("malloc/frame_bitmap\n");
 
                /*
                 * Mark all frames free.
                 */
                memsetb((__address) frame_bitmap, frame_bitmap_octets, 0);
                frames_free = frames;
 
        /*
         * Will be properly set up by architecture dependent frame init.
         */
        frame_kernel_bitmap = NULL;
        kernel_frames_free = 0;
        kernel_frames = 0; 
    }
 
    /*
     * No frame allocations/reservations  prior this point.
     */
 
    frame_arch_init();
 
    if (config.cpu_active == 1) {
                /*
                 * Create the memory address space map. Marked frames and frame
                 * regions cannot be used for allocation.
                 */
        frame_region_not_free(config.base, config.base + config.kernel_size);
    }
}
 
/*
 * Allocate a frame.
 */
__address frame_alloc(int flags)
{
    int i;
    pri_t pri;
    __u8 **frame_bitmap_ptr = &frame_bitmap;
    __u32 *frames_ptr = &frames, *frames_free_ptr = &frames_free;
   
    if (flags & FRAME_KA) {
        frame_bitmap_ptr = &frame_kernel_bitmap;
        frames_ptr = &kernel_frames;
        frames_free_ptr = &kernel_frames_free;
    }
   
loop:
    pri = cpu_priority_high();
    spinlock_lock(&framelock);
    if (*frames_free_ptr) {
        for (i=0; i < *frames_ptr; i++) {
            int m, n;
       
            m = i / 8;
            n = i % 8;
 
            if (((*frame_bitmap_ptr)[m] & (1<<n)) == 0) {
                (*frame_bitmap_ptr)[m] |= (1<<n);
                *frames_free_ptr--;
                if (flags & FRAME_KA) {
                    /*
                     * frames_free_ptr points to kernel_frames_free
                     * It is still necessary to decrement frames_free.
                     */
                    frames_free--;
                }
                spinlock_unlock(&framelock);
                cpu_priority_restore(pri);
                if (flags & FRAME_KA) return PA2KA(i*FRAME_SIZE);
                return i*FRAME_SIZE;
            }
        }
        panic("frames_free inconsistent (%d)\n", frames_free);
    }
    spinlock_unlock(&framelock);
    cpu_priority_restore(pri);
 
    if (flags & FRAME_PANIC)
        panic("unable to allocate frame\n");
       
    /* TODO: implement sleeping logic here */
    panic("sleep not supported\n");
   
    goto loop;
}
 
/*
 * Free a frame.
 */
void frame_free(__address addr)
{
    pri_t pri;
    __u32 frame;
    __u32 *frames_free_ptr = &frames_free, *frames_ptr = &frames;
    __u8 **frame_bitmap_ptr = &frame_bitmap;
 
    if (IS_KA(addr)) {
        frames_free_ptr = &kernel_frames_free;
        frame_bitmap_ptr = &frame_kernel_bitmap;
    }
 
    pri = cpu_priority_high();
    spinlock_lock(&framelock);
   
    frame = IS_KA(addr) ? KA2PA(addr) : addr;
    frame /= FRAME_SIZE;
    if (frame < *frames_ptr) {
        int m, n;
   
        m = frame / 8;
        n = frame % 8;
   
        if ((*frame_bitmap_ptr)[m] & (1<<n)) {
            (*frame_bitmap_ptr)[m] &= ~(1<<n);
            *frames_free_ptr++;
            if (IS_KA(addr)) {
                /*
                 * frames_free_ptr points to kernel_frames_free
                 * It is still necessary to increment frames_free.
                 */
                 frames_free++;
            }  
        }
        else panic("frame_free: frame already free\n");
    }
    else panic("frame_free: frame number too big\n");
   
    spinlock_unlock(&framelock);
    cpu_priority_restore(pri);
}
 
/*
 * Don't use this function for normal allocation. Use frame_alloc() instead.
 * Use this function to declare that some special frame is not free.
 */
void frame_not_free(__address addr)
{
    pri_t pri;
    __u32 frame;
    __u32 *frames_ptr = &frames, *frames_free_ptr = &frames_free;
    __u8 **frame_bitmap_ptr = &frame_bitmap;
   
    pri = cpu_priority_high();
    spinlock_lock(&framelock);
    frame = IS_KA(addr) ? KA2PA(addr) : addr;
    frame /= FRAME_SIZE;
    if (frame < *frames_ptr) {
        int m, n;
 
        m = frame / 8;
        n = frame % 8;
   
        if (((*frame_bitmap_ptr)[m] & (1<<n)) == 0) {  
            (*frame_bitmap_ptr)[m] |= (1<<n);
            *frames_free_ptr--;
            if (IS_KA(addr)) {
                /*
                 * frames_free_ptr points to kernel_frames_free
                 * It is still necessary to decrement frames_free.
                 */
                frames_free--;
            }
        }
    }
    spinlock_unlock(&framelock);
    cpu_priority_restore(pri);
}
 
void frame_region_not_free(__address start, __address stop)
{
    __u32 i;
 
    start /= FRAME_SIZE;
    stop /= FRAME_SIZE;
    for (i = start; i <= stop; i++)
        frame_not_free(i * FRAME_SIZE);
}
 

Rev 1	Rev 68
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <arch/types.h>	29	#include <arch/types.h>
30	#include <func.h>	30	#include <func.h>
31		31
32	#include <mm/heap.h>	32	#include <mm/heap.h>
33	#include <mm/frame.h>	33	#include <mm/frame.h>
34	#include <mm/page.h>	34	#include <mm/page.h>
35	#include <mm/vm.h>	35	#include <mm/vm.h>
36	#include <arch/mm/page.h>	36	#include <arch/mm/page.h>
37		37
38	#include <config.h>	38	#include <config.h>
39	#include <memstr.h>	39	#include <memstr.h>
40		40
41	#include <panic.h>	41	#include <panic.h>
42		42
43	#include <synch/spinlock.h>	43	#include <synch/spinlock.h>
44		44
45	__u32 frames;	45	__u32 frames;
46	__u32 frames_free;	46	__u32 frames_free;
47		47
48	__u8 *frame_bitmap;	48	__u8 *frame_bitmap;
49	__u32 frame_bitmap_octets;	49	__u32 frame_bitmap_octets;
50		50
51	/*	51	/*
52	* This is for kernel address space frames (allocated with FRAME_KA).	52	* This is for kernel address space frames (allocated with FRAME_KA).
53	* Their addresses may not interfere with user address space.	53	* Their addresses may not interfere with user address space.
54	*/	54	*/
55	__u8 *frame_kernel_bitmap;	55	__u8 *frame_kernel_bitmap;
56	__u32 kernel_frames;	56	__u32 kernel_frames;
57	__u32 kernel_frames_free;	57	__u32 kernel_frames_free;
58		58
59	static spinlock_t framelock;	59	static spinlock_t framelock;
60		60
61	void frame_init(void)	61	void frame_init(void)
62	{	62	{
63	if (config.cpu_active == 1) {	63	if (config.cpu_active == 1) {
64		64
65	/*	65	/*
66	* The bootstrap processor will allocate all necessary memory for frame allocation.	66	* The bootstrap processor will allocate all necessary memory for frame allocation.
67	*/	67	*/
68		68
69	frames = config.memory_size / FRAME_SIZE;	69	frames = config.memory_size / FRAME_SIZE;
70	frame_bitmap_octets = frames / 8 + (frames % 8 > 0);	70	frame_bitmap_octets = frames / 8 + (frames % 8 > 0);
71		71
72	frame_bitmap = (__u8 *) malloc(frame_bitmap_octets);	72	frame_bitmap = (__u8 *) malloc(frame_bitmap_octets);
73	if (!frame_bitmap)	73	if (!frame_bitmap)
74	panic(PANIC "malloc/frame_bitmap\n");	74	panic("malloc/frame_bitmap\n");
75		75
76	/*	76	/*
77	* Mark all frames free.	77	* Mark all frames free.
78	*/	78	*/
79	memsetb((__address) frame_bitmap, frame_bitmap_octets, 0);	79	memsetb((__address) frame_bitmap, frame_bitmap_octets, 0);
80	frames_free = frames;	80	frames_free = frames;
81		81
82	/*	82	/*
83	* Will be properly set up by architecture dependent frame init.	83	* Will be properly set up by architecture dependent frame init.
84	*/	84	*/
85	frame_kernel_bitmap = NULL;	85	frame_kernel_bitmap = NULL;
86	kernel_frames_free = 0;	86	kernel_frames_free = 0;
87	kernel_frames = 0;	87	kernel_frames = 0;
88	}	88	}
89		89
90	/*	90	/*
91	* No frame allocations/reservations prior this point.	91	* No frame allocations/reservations prior this point.
92	*/	92	*/
93		93
94	frame_arch_init();	94	frame_arch_init();
95		95
96	if (config.cpu_active == 1) {	96	if (config.cpu_active == 1) {
97	/*	97	/*
98	* Create the memory address space map. Marked frames and frame	98	* Create the memory address space map. Marked frames and frame
99	* regions cannot be used for allocation.	99	* regions cannot be used for allocation.
100	*/	100	*/
101	frame_region_not_free(config.base, config.base + config.kernel_size);	101	frame_region_not_free(config.base, config.base + config.kernel_size);
102	}	102	}
103	}	103	}
104		104
105	/*	105	/*
106	* Allocate a frame.	106	* Allocate a frame.
107	*/	107	*/
108	__address frame_alloc(int flags)	108	__address frame_alloc(int flags)
109	{	109	{
110	int i;	110	int i;
111	pri_t pri;	111	pri_t pri;
112	__u8 **frame_bitmap_ptr = &frame_bitmap;	112	__u8 **frame_bitmap_ptr = &frame_bitmap;
113	__u32 frames_ptr = &frames, frames_free_ptr = &frames_free;	113	__u32 frames_ptr = &frames, frames_free_ptr = &frames_free;
114		114
115	if (flags & FRAME_KA) {	115	if (flags & FRAME_KA) {
116	frame_bitmap_ptr = &frame_kernel_bitmap;	116	frame_bitmap_ptr = &frame_kernel_bitmap;
117	frames_ptr = &kernel_frames;	117	frames_ptr = &kernel_frames;
118	frames_free_ptr = &kernel_frames_free;	118	frames_free_ptr = &kernel_frames_free;
119	}	119	}
120		120
121	loop:	121	loop:
122	pri = cpu_priority_high();	122	pri = cpu_priority_high();
123	spinlock_lock(&framelock);	123	spinlock_lock(&framelock);
124	if (*frames_free_ptr) {	124	if (*frames_free_ptr) {
125	for (i=0; i < *frames_ptr; i++) {	125	for (i=0; i < *frames_ptr; i++) {
126	int m, n;	126	int m, n;
127		127
128	m = i / 8;	128	m = i / 8;
129	n = i % 8;	129	n = i % 8;
130		130
131	if (((*frame_bitmap_ptr)[m] & (1<<n)) == 0) {	131	if (((*frame_bitmap_ptr)[m] & (1<<n)) == 0) {
132	(*frame_bitmap_ptr)[m] \|= (1<<n);	132	(*frame_bitmap_ptr)[m] \|= (1<<n);
133	*frames_free_ptr--;	133	*frames_free_ptr--;
134	if (flags & FRAME_KA) {	134	if (flags & FRAME_KA) {
135	/*	135	/*
136	* frames_free_ptr points to kernel_frames_free	136	* frames_free_ptr points to kernel_frames_free
137	* It is still necessary to decrement frames_free.	137	* It is still necessary to decrement frames_free.
138	*/	138	*/
139	frames_free--;	139	frames_free--;
140	}	140	}
141	spinlock_unlock(&framelock);	141	spinlock_unlock(&framelock);
142	cpu_priority_restore(pri);	142	cpu_priority_restore(pri);
143	if (flags & FRAME_KA) return PA2KA(i*FRAME_SIZE);	143	if (flags & FRAME_KA) return PA2KA(i*FRAME_SIZE);
144	return i*FRAME_SIZE;	144	return i*FRAME_SIZE;
145	}	145	}
146	}	146	}
147	panic(PANIC "frames_free inconsistent (%d)\n", frames_free);	147	panic("frames_free inconsistent (%d)\n", frames_free);
148	}	148	}
149	spinlock_unlock(&framelock);	149	spinlock_unlock(&framelock);
150	cpu_priority_restore(pri);	150	cpu_priority_restore(pri);
151		151
152	if (flags & FRAME_PANIC)	152	if (flags & FRAME_PANIC)
153	panic(PANIC "unable to allocate frame\n");	153	panic("unable to allocate frame\n");
154		154
155	/* TODO: implement sleeping logic here */	155	/* TODO: implement sleeping logic here */
156	panic(PANIC "sleep not supported\n");	156	panic("sleep not supported\n");
157		157
158	goto loop;	158	goto loop;
159	}	159	}
160		160
161	/*	161	/*
162	* Free a frame.	162	* Free a frame.
163	*/	163	*/
164	void frame_free(__address addr)	164	void frame_free(__address addr)
165	{	165	{
166	pri_t pri;	166	pri_t pri;
167	__u32 frame;	167	__u32 frame;
168	__u32 frames_free_ptr = &frames_free, frames_ptr = &frames;	168	__u32 frames_free_ptr = &frames_free, frames_ptr = &frames;
169	__u8 **frame_bitmap_ptr = &frame_bitmap;	169	__u8 **frame_bitmap_ptr = &frame_bitmap;
170		170
171	if (IS_KA(addr)) {	171	if (IS_KA(addr)) {
172	frames_free_ptr = &kernel_frames_free;	172	frames_free_ptr = &kernel_frames_free;
173	frame_bitmap_ptr = &frame_kernel_bitmap;	173	frame_bitmap_ptr = &frame_kernel_bitmap;
174	}	174	}
175		175
176	pri = cpu_priority_high();	176	pri = cpu_priority_high();
177	spinlock_lock(&framelock);	177	spinlock_lock(&framelock);
178		178
179	frame = IS_KA(addr) ? KA2PA(addr) : addr;	179	frame = IS_KA(addr) ? KA2PA(addr) : addr;
180	frame /= FRAME_SIZE;	180	frame /= FRAME_SIZE;
181	if (frame < *frames_ptr) {	181	if (frame < *frames_ptr) {
182	int m, n;	182	int m, n;
183		183
184	m = frame / 8;	184	m = frame / 8;
185	n = frame % 8;	185	n = frame % 8;
186		186
187	if ((*frame_bitmap_ptr)[m] & (1<<n)) {	187	if ((*frame_bitmap_ptr)[m] & (1<<n)) {
188	(*frame_bitmap_ptr)[m] &= ~(1<<n);	188	(*frame_bitmap_ptr)[m] &= ~(1<<n);
189	*frames_free_ptr++;	189	*frames_free_ptr++;
190	if (IS_KA(addr)) {	190	if (IS_KA(addr)) {
191	/*	191	/*
192	* frames_free_ptr points to kernel_frames_free	192	* frames_free_ptr points to kernel_frames_free
193	* It is still necessary to increment frames_free.	193	* It is still necessary to increment frames_free.
194	*/	194	*/
195	frames_free++;	195	frames_free++;
196	}	196	}
197	}	197	}
198	else panic(PANIC "frame_free: frame already free\n");	198	else panic("frame_free: frame already free\n");
199	}	199	}
200	else panic(PANIC "frame_free: frame number too big\n");	200	else panic("frame_free: frame number too big\n");
201		201
202	spinlock_unlock(&framelock);	202	spinlock_unlock(&framelock);
203	cpu_priority_restore(pri);	203	cpu_priority_restore(pri);
204	}	204	}
205		205
206	/*	206	/*
207	* Don't use this function for normal allocation. Use frame_alloc() instead.	207	* Don't use this function for normal allocation. Use frame_alloc() instead.
208	* Use this function to declare that some special frame is not free.	208	* Use this function to declare that some special frame is not free.
209	*/	209	*/
210	void frame_not_free(__address addr)	210	void frame_not_free(__address addr)
211	{	211	{
212	pri_t pri;	212	pri_t pri;
213	__u32 frame;	213	__u32 frame;
214	__u32 frames_ptr = &frames, frames_free_ptr = &frames_free;	214	__u32 frames_ptr = &frames, frames_free_ptr = &frames_free;
215	__u8 **frame_bitmap_ptr = &frame_bitmap;	215	__u8 **frame_bitmap_ptr = &frame_bitmap;
216		216
217	pri = cpu_priority_high();	217	pri = cpu_priority_high();
218	spinlock_lock(&framelock);	218	spinlock_lock(&framelock);
219	frame = IS_KA(addr) ? KA2PA(addr) : addr;	219	frame = IS_KA(addr) ? KA2PA(addr) : addr;
220	frame /= FRAME_SIZE;	220	frame /= FRAME_SIZE;
221	if (frame < *frames_ptr) {	221	if (frame < *frames_ptr) {
222	int m, n;	222	int m, n;
223		223
224	m = frame / 8;	224	m = frame / 8;
225	n = frame % 8;	225	n = frame % 8;
226		226
227	if (((*frame_bitmap_ptr)[m] & (1<<n)) == 0) {	227	if (((*frame_bitmap_ptr)[m] & (1<<n)) == 0) {
228	(*frame_bitmap_ptr)[m] \|= (1<<n);	228	(*frame_bitmap_ptr)[m] \|= (1<<n);
229	*frames_free_ptr--;	229	*frames_free_ptr--;
230	if (IS_KA(addr)) {	230	if (IS_KA(addr)) {
231	/*	231	/*
232	* frames_free_ptr points to kernel_frames_free	232	* frames_free_ptr points to kernel_frames_free
233	* It is still necessary to decrement frames_free.	233	* It is still necessary to decrement frames_free.
234	*/	234	*/
235	frames_free--;	235	frames_free--;
236	}	236	}
237	}	237	}
238	}	238	}
239	spinlock_unlock(&framelock);	239	spinlock_unlock(&framelock);
240	cpu_priority_restore(pri);	240	cpu_priority_restore(pri);
241	}	241	}
242		242
243	void frame_region_not_free(__address start, __address stop)	243	void frame_region_not_free(__address start, __address stop)
244	{	244	{
245	__u32 i;	245	__u32 i;
246		246
247	start /= FRAME_SIZE;	247	start /= FRAME_SIZE;
248	stop /= FRAME_SIZE;	248	stop /= FRAME_SIZE;
249	for (i = start; i <= stop; i++)	249	for (i = start; i <= stop; i++)
250	frame_not_free(i * FRAME_SIZE);	250	frame_not_free(i * FRAME_SIZE);
251	}	251	}
252		252

Subversion Repositories HelenOS-historic

(root)/SPARTAN/trunk/src/mm/frame.c – Rev 1 → 68