Line data Source code
1 : /* SPDX-License-Identifier: GPL-2.0 */
2 : #ifndef __LINUX_NODEMASK_H
3 : #define __LINUX_NODEMASK_H
4 :
5 : /*
6 : * Nodemasks provide a bitmap suitable for representing the
7 : * set of Node's in a system, one bit position per Node number.
8 : *
9 : * See detailed comments in the file linux/bitmap.h describing the
10 : * data type on which these nodemasks are based.
11 : *
12 : * For details of nodemask_parse_user(), see bitmap_parse_user() in
13 : * lib/bitmap.c. For details of nodelist_parse(), see bitmap_parselist(),
14 : * also in bitmap.c. For details of node_remap(), see bitmap_bitremap in
15 : * lib/bitmap.c. For details of nodes_remap(), see bitmap_remap in
16 : * lib/bitmap.c. For details of nodes_onto(), see bitmap_onto in
17 : * lib/bitmap.c. For details of nodes_fold(), see bitmap_fold in
18 : * lib/bitmap.c.
19 : *
20 : * The available nodemask operations are:
21 : *
22 : * void node_set(node, mask) turn on bit 'node' in mask
23 : * void node_clear(node, mask) turn off bit 'node' in mask
24 : * void nodes_setall(mask) set all bits
25 : * void nodes_clear(mask) clear all bits
26 : * int node_isset(node, mask) true iff bit 'node' set in mask
27 : * int node_test_and_set(node, mask) test and set bit 'node' in mask
28 : *
29 : * void nodes_and(dst, src1, src2) dst = src1 & src2 [intersection]
30 : * void nodes_or(dst, src1, src2) dst = src1 | src2 [union]
31 : * void nodes_xor(dst, src1, src2) dst = src1 ^ src2
32 : * void nodes_andnot(dst, src1, src2) dst = src1 & ~src2
33 : * void nodes_complement(dst, src) dst = ~src
34 : *
35 : * int nodes_equal(mask1, mask2) Does mask1 == mask2?
36 : * int nodes_intersects(mask1, mask2) Do mask1 and mask2 intersect?
37 : * int nodes_subset(mask1, mask2) Is mask1 a subset of mask2?
38 : * int nodes_empty(mask) Is mask empty (no bits sets)?
39 : * int nodes_full(mask) Is mask full (all bits sets)?
40 : * int nodes_weight(mask) Hamming weight - number of set bits
41 : *
42 : * void nodes_shift_right(dst, src, n) Shift right
43 : * void nodes_shift_left(dst, src, n) Shift left
44 : *
45 : * unsigned int first_node(mask) Number lowest set bit, or MAX_NUMNODES
46 : * unsigend int next_node(node, mask) Next node past 'node', or MAX_NUMNODES
47 : * unsigned int next_node_in(node, mask) Next node past 'node', or wrap to first,
48 : * or MAX_NUMNODES
49 : * unsigned int first_unset_node(mask) First node not set in mask, or
50 : * MAX_NUMNODES
51 : *
52 : * nodemask_t nodemask_of_node(node) Return nodemask with bit 'node' set
53 : * NODE_MASK_ALL Initializer - all bits set
54 : * NODE_MASK_NONE Initializer - no bits set
55 : * unsigned long *nodes_addr(mask) Array of unsigned long's in mask
56 : *
57 : * int nodemask_parse_user(ubuf, ulen, mask) Parse ascii string as nodemask
58 : * int nodelist_parse(buf, map) Parse ascii string as nodelist
59 : * int node_remap(oldbit, old, new) newbit = map(old, new)(oldbit)
60 : * void nodes_remap(dst, src, old, new) *dst = map(old, new)(src)
61 : * void nodes_onto(dst, orig, relmap) *dst = orig relative to relmap
62 : * void nodes_fold(dst, orig, sz) dst bits = orig bits mod sz
63 : *
64 : * for_each_node_mask(node, mask) for-loop node over mask
65 : *
66 : * int num_online_nodes() Number of online Nodes
67 : * int num_possible_nodes() Number of all possible Nodes
68 : *
69 : * int node_random(mask) Random node with set bit in mask
70 : *
71 : * int node_online(node) Is some node online?
72 : * int node_possible(node) Is some node possible?
73 : *
74 : * node_set_online(node) set bit 'node' in node_online_map
75 : * node_set_offline(node) clear bit 'node' in node_online_map
76 : *
77 : * for_each_node(node) for-loop node over node_possible_map
78 : * for_each_online_node(node) for-loop node over node_online_map
79 : *
80 : * Subtlety:
81 : * 1) The 'type-checked' form of node_isset() causes gcc (3.3.2, anyway)
82 : * to generate slightly worse code. So use a simple one-line #define
83 : * for node_isset(), instead of wrapping an inline inside a macro, the
84 : * way we do the other calls.
85 : *
86 : * NODEMASK_SCRATCH
87 : * When doing above logical AND, OR, XOR, Remap operations the callers tend to
88 : * need temporary nodemask_t's on the stack. But if NODES_SHIFT is large,
89 : * nodemask_t's consume too much stack space. NODEMASK_SCRATCH is a helper
90 : * for such situations. See below and CPUMASK_ALLOC also.
91 : */
92 :
93 : #include <linux/threads.h>
94 : #include <linux/bitmap.h>
95 : #include <linux/minmax.h>
96 : #include <linux/numa.h>
97 : #include <linux/random.h>
98 :
99 : typedef struct { DECLARE_BITMAP(bits, MAX_NUMNODES); } nodemask_t;
100 : extern nodemask_t _unused_nodemask_arg_;
101 :
102 : /**
103 : * nodemask_pr_args - printf args to output a nodemask
104 : * @maskp: nodemask to be printed
105 : *
106 : * Can be used to provide arguments for '%*pb[l]' when printing a nodemask.
107 : */
108 : #define nodemask_pr_args(maskp) __nodemask_pr_numnodes(maskp), \
109 : __nodemask_pr_bits(maskp)
110 : static inline unsigned int __nodemask_pr_numnodes(const nodemask_t *m)
111 : {
112 0 : return m ? MAX_NUMNODES : 0;
113 : }
114 : static inline const unsigned long *__nodemask_pr_bits(const nodemask_t *m)
115 : {
116 0 : return m ? m->bits : NULL;
117 : }
118 :
119 : /*
120 : * The inline keyword gives the compiler room to decide to inline, or
121 : * not inline a function as it sees best. However, as these functions
122 : * are called in both __init and non-__init functions, if they are not
123 : * inlined we will end up with a section mismatch error (of the type of
124 : * freeable items not being freed). So we must use __always_inline here
125 : * to fix the problem. If other functions in the future also end up in
126 : * this situation they will also need to be annotated as __always_inline
127 : */
128 : #define node_set(node, dst) __node_set((node), &(dst))
129 : static __always_inline void __node_set(int node, volatile nodemask_t *dstp)
130 : {
131 1 : set_bit(node, dstp->bits);
132 : }
133 :
134 : #define node_clear(node, dst) __node_clear((node), &(dst))
135 : static inline void __node_clear(int node, volatile nodemask_t *dstp)
136 : {
137 : clear_bit(node, dstp->bits);
138 : }
139 :
140 : #define nodes_setall(dst) __nodes_setall(&(dst), MAX_NUMNODES)
141 : static inline void __nodes_setall(nodemask_t *dstp, unsigned int nbits)
142 : {
143 : bitmap_fill(dstp->bits, nbits);
144 : }
145 :
146 : #define nodes_clear(dst) __nodes_clear(&(dst), MAX_NUMNODES)
147 : static inline void __nodes_clear(nodemask_t *dstp, unsigned int nbits)
148 : {
149 : bitmap_zero(dstp->bits, nbits);
150 : }
151 :
152 : /* No static inline type checking - see Subtlety (1) above. */
153 : #define node_isset(node, nodemask) test_bit((node), (nodemask).bits)
154 :
155 : #define node_test_and_set(node, nodemask) \
156 : __node_test_and_set((node), &(nodemask))
157 : static inline bool __node_test_and_set(int node, nodemask_t *addr)
158 : {
159 : return test_and_set_bit(node, addr->bits);
160 : }
161 :
162 : #define nodes_and(dst, src1, src2) \
163 : __nodes_and(&(dst), &(src1), &(src2), MAX_NUMNODES)
164 : static inline void __nodes_and(nodemask_t *dstp, const nodemask_t *src1p,
165 : const nodemask_t *src2p, unsigned int nbits)
166 : {
167 : bitmap_and(dstp->bits, src1p->bits, src2p->bits, nbits);
168 : }
169 :
170 : #define nodes_or(dst, src1, src2) \
171 : __nodes_or(&(dst), &(src1), &(src2), MAX_NUMNODES)
172 : static inline void __nodes_or(nodemask_t *dstp, const nodemask_t *src1p,
173 : const nodemask_t *src2p, unsigned int nbits)
174 : {
175 : bitmap_or(dstp->bits, src1p->bits, src2p->bits, nbits);
176 : }
177 :
178 : #define nodes_xor(dst, src1, src2) \
179 : __nodes_xor(&(dst), &(src1), &(src2), MAX_NUMNODES)
180 : static inline void __nodes_xor(nodemask_t *dstp, const nodemask_t *src1p,
181 : const nodemask_t *src2p, unsigned int nbits)
182 : {
183 : bitmap_xor(dstp->bits, src1p->bits, src2p->bits, nbits);
184 : }
185 :
186 : #define nodes_andnot(dst, src1, src2) \
187 : __nodes_andnot(&(dst), &(src1), &(src2), MAX_NUMNODES)
188 : static inline void __nodes_andnot(nodemask_t *dstp, const nodemask_t *src1p,
189 : const nodemask_t *src2p, unsigned int nbits)
190 : {
191 : bitmap_andnot(dstp->bits, src1p->bits, src2p->bits, nbits);
192 : }
193 :
194 : #define nodes_complement(dst, src) \
195 : __nodes_complement(&(dst), &(src), MAX_NUMNODES)
196 : static inline void __nodes_complement(nodemask_t *dstp,
197 : const nodemask_t *srcp, unsigned int nbits)
198 : {
199 : bitmap_complement(dstp->bits, srcp->bits, nbits);
200 : }
201 :
202 : #define nodes_equal(src1, src2) \
203 : __nodes_equal(&(src1), &(src2), MAX_NUMNODES)
204 : static inline bool __nodes_equal(const nodemask_t *src1p,
205 : const nodemask_t *src2p, unsigned int nbits)
206 : {
207 : return bitmap_equal(src1p->bits, src2p->bits, nbits);
208 : }
209 :
210 : #define nodes_intersects(src1, src2) \
211 : __nodes_intersects(&(src1), &(src2), MAX_NUMNODES)
212 : static inline bool __nodes_intersects(const nodemask_t *src1p,
213 : const nodemask_t *src2p, unsigned int nbits)
214 : {
215 : return bitmap_intersects(src1p->bits, src2p->bits, nbits);
216 : }
217 :
218 : #define nodes_subset(src1, src2) \
219 : __nodes_subset(&(src1), &(src2), MAX_NUMNODES)
220 : static inline bool __nodes_subset(const nodemask_t *src1p,
221 : const nodemask_t *src2p, unsigned int nbits)
222 : {
223 : return bitmap_subset(src1p->bits, src2p->bits, nbits);
224 : }
225 :
226 : #define nodes_empty(src) __nodes_empty(&(src), MAX_NUMNODES)
227 : static inline bool __nodes_empty(const nodemask_t *srcp, unsigned int nbits)
228 : {
229 53 : return bitmap_empty(srcp->bits, nbits);
230 : }
231 :
232 : #define nodes_full(nodemask) __nodes_full(&(nodemask), MAX_NUMNODES)
233 : static inline bool __nodes_full(const nodemask_t *srcp, unsigned int nbits)
234 : {
235 : return bitmap_full(srcp->bits, nbits);
236 : }
237 :
238 : #define nodes_weight(nodemask) __nodes_weight(&(nodemask), MAX_NUMNODES)
239 1 : static inline int __nodes_weight(const nodemask_t *srcp, unsigned int nbits)
240 : {
241 2 : return bitmap_weight(srcp->bits, nbits);
242 : }
243 :
244 : #define nodes_shift_right(dst, src, n) \
245 : __nodes_shift_right(&(dst), &(src), (n), MAX_NUMNODES)
246 : static inline void __nodes_shift_right(nodemask_t *dstp,
247 : const nodemask_t *srcp, int n, int nbits)
248 : {
249 : bitmap_shift_right(dstp->bits, srcp->bits, n, nbits);
250 : }
251 :
252 : #define nodes_shift_left(dst, src, n) \
253 : __nodes_shift_left(&(dst), &(src), (n), MAX_NUMNODES)
254 : static inline void __nodes_shift_left(nodemask_t *dstp,
255 : const nodemask_t *srcp, int n, int nbits)
256 : {
257 : bitmap_shift_left(dstp->bits, srcp->bits, n, nbits);
258 : }
259 :
260 : /* FIXME: better would be to fix all architectures to never return
261 : > MAX_NUMNODES, then the silly min_ts could be dropped. */
262 :
263 : #define first_node(src) __first_node(&(src))
264 : static inline unsigned int __first_node(const nodemask_t *srcp)
265 : {
266 : return min_t(unsigned int, MAX_NUMNODES, find_first_bit(srcp->bits, MAX_NUMNODES));
267 : }
268 :
269 : #define next_node(n, src) __next_node((n), &(src))
270 : static inline unsigned int __next_node(int n, const nodemask_t *srcp)
271 : {
272 : return min_t(unsigned int, MAX_NUMNODES, find_next_bit(srcp->bits, MAX_NUMNODES, n+1));
273 : }
274 :
275 : /*
276 : * Find the next present node in src, starting after node n, wrapping around to
277 : * the first node in src if needed. Returns MAX_NUMNODES if src is empty.
278 : */
279 : #define next_node_in(n, src) __next_node_in((n), &(src))
280 : static inline unsigned int __next_node_in(int node, const nodemask_t *srcp)
281 : {
282 : unsigned int ret = __next_node(node, srcp);
283 :
284 : if (ret == MAX_NUMNODES)
285 : ret = __first_node(srcp);
286 : return ret;
287 : }
288 :
289 : static inline void init_nodemask_of_node(nodemask_t *mask, int node)
290 : {
291 : nodes_clear(*mask);
292 : node_set(node, *mask);
293 : }
294 :
295 : #define nodemask_of_node(node) \
296 : ({ \
297 : typeof(_unused_nodemask_arg_) m; \
298 : if (sizeof(m) == sizeof(unsigned long)) { \
299 : m.bits[0] = 1UL << (node); \
300 : } else { \
301 : init_nodemask_of_node(&m, (node)); \
302 : } \
303 : m; \
304 : })
305 :
306 : #define first_unset_node(mask) __first_unset_node(&(mask))
307 : static inline unsigned int __first_unset_node(const nodemask_t *maskp)
308 : {
309 : return min_t(unsigned int, MAX_NUMNODES,
310 : find_first_zero_bit(maskp->bits, MAX_NUMNODES));
311 : }
312 :
313 : #define NODE_MASK_LAST_WORD BITMAP_LAST_WORD_MASK(MAX_NUMNODES)
314 :
315 : #if MAX_NUMNODES <= BITS_PER_LONG
316 :
317 : #define NODE_MASK_ALL \
318 : ((nodemask_t) { { \
319 : [BITS_TO_LONGS(MAX_NUMNODES)-1] = NODE_MASK_LAST_WORD \
320 : } })
321 :
322 : #else
323 :
324 : #define NODE_MASK_ALL \
325 : ((nodemask_t) { { \
326 : [0 ... BITS_TO_LONGS(MAX_NUMNODES)-2] = ~0UL, \
327 : [BITS_TO_LONGS(MAX_NUMNODES)-1] = NODE_MASK_LAST_WORD \
328 : } })
329 :
330 : #endif
331 :
332 : #define NODE_MASK_NONE \
333 : ((nodemask_t) { { \
334 : [0 ... BITS_TO_LONGS(MAX_NUMNODES)-1] = 0UL \
335 : } })
336 :
337 : #define nodes_addr(src) ((src).bits)
338 :
339 : #define nodemask_parse_user(ubuf, ulen, dst) \
340 : __nodemask_parse_user((ubuf), (ulen), &(dst), MAX_NUMNODES)
341 : static inline int __nodemask_parse_user(const char __user *buf, int len,
342 : nodemask_t *dstp, int nbits)
343 : {
344 : return bitmap_parse_user(buf, len, dstp->bits, nbits);
345 : }
346 :
347 : #define nodelist_parse(buf, dst) __nodelist_parse((buf), &(dst), MAX_NUMNODES)
348 : static inline int __nodelist_parse(const char *buf, nodemask_t *dstp, int nbits)
349 : {
350 : return bitmap_parselist(buf, dstp->bits, nbits);
351 : }
352 :
353 : #define node_remap(oldbit, old, new) \
354 : __node_remap((oldbit), &(old), &(new), MAX_NUMNODES)
355 : static inline int __node_remap(int oldbit,
356 : const nodemask_t *oldp, const nodemask_t *newp, int nbits)
357 : {
358 : return bitmap_bitremap(oldbit, oldp->bits, newp->bits, nbits);
359 : }
360 :
361 : #define nodes_remap(dst, src, old, new) \
362 : __nodes_remap(&(dst), &(src), &(old), &(new), MAX_NUMNODES)
363 : static inline void __nodes_remap(nodemask_t *dstp, const nodemask_t *srcp,
364 : const nodemask_t *oldp, const nodemask_t *newp, int nbits)
365 : {
366 : bitmap_remap(dstp->bits, srcp->bits, oldp->bits, newp->bits, nbits);
367 : }
368 :
369 : #define nodes_onto(dst, orig, relmap) \
370 : __nodes_onto(&(dst), &(orig), &(relmap), MAX_NUMNODES)
371 : static inline void __nodes_onto(nodemask_t *dstp, const nodemask_t *origp,
372 : const nodemask_t *relmapp, int nbits)
373 : {
374 : bitmap_onto(dstp->bits, origp->bits, relmapp->bits, nbits);
375 : }
376 :
377 : #define nodes_fold(dst, orig, sz) \
378 : __nodes_fold(&(dst), &(orig), sz, MAX_NUMNODES)
379 : static inline void __nodes_fold(nodemask_t *dstp, const nodemask_t *origp,
380 : int sz, int nbits)
381 : {
382 : bitmap_fold(dstp->bits, origp->bits, sz, nbits);
383 : }
384 :
385 : #if MAX_NUMNODES > 1
386 : #define for_each_node_mask(node, mask) \
387 : for ((node) = first_node(mask); \
388 : (node) < MAX_NUMNODES; \
389 : (node) = next_node((node), (mask)))
390 : #else /* MAX_NUMNODES == 1 */
391 : #define for_each_node_mask(node, mask) \
392 : for ((node) = 0; (node) < 1 && !nodes_empty(mask); (node)++)
393 : #endif /* MAX_NUMNODES */
394 :
395 : /*
396 : * Bitmasks that are kept for all the nodes.
397 : */
398 : enum node_states {
399 : N_POSSIBLE, /* The node could become online at some point */
400 : N_ONLINE, /* The node is online */
401 : N_NORMAL_MEMORY, /* The node has regular memory */
402 : #ifdef CONFIG_HIGHMEM
403 : N_HIGH_MEMORY, /* The node has regular or high memory */
404 : #else
405 : N_HIGH_MEMORY = N_NORMAL_MEMORY,
406 : #endif
407 : N_MEMORY, /* The node has memory(regular, high, movable) */
408 : N_CPU, /* The node has one or more cpus */
409 : N_GENERIC_INITIATOR, /* The node has one or more Generic Initiators */
410 : NR_NODE_STATES
411 : };
412 :
413 : /*
414 : * The following particular system nodemasks and operations
415 : * on them manage all possible and online nodes.
416 : */
417 :
418 : extern nodemask_t node_states[NR_NODE_STATES];
419 :
420 : #if MAX_NUMNODES > 1
421 : static inline int node_state(int node, enum node_states state)
422 : {
423 : return node_isset(node, node_states[state]);
424 : }
425 :
426 : static inline void node_set_state(int node, enum node_states state)
427 : {
428 : __node_set(node, &node_states[state]);
429 : }
430 :
431 : static inline void node_clear_state(int node, enum node_states state)
432 : {
433 : __node_clear(node, &node_states[state]);
434 : }
435 :
436 : static inline int num_node_state(enum node_states state)
437 : {
438 : return nodes_weight(node_states[state]);
439 : }
440 :
441 : #define for_each_node_state(__node, __state) \
442 : for_each_node_mask((__node), node_states[__state])
443 :
444 : #define first_online_node first_node(node_states[N_ONLINE])
445 : #define first_memory_node first_node(node_states[N_MEMORY])
446 : static inline unsigned int next_online_node(int nid)
447 : {
448 : return next_node(nid, node_states[N_ONLINE]);
449 : }
450 : static inline unsigned int next_memory_node(int nid)
451 : {
452 : return next_node(nid, node_states[N_MEMORY]);
453 : }
454 :
455 : extern unsigned int nr_node_ids;
456 : extern unsigned int nr_online_nodes;
457 :
458 : static inline void node_set_online(int nid)
459 : {
460 : node_set_state(nid, N_ONLINE);
461 : nr_online_nodes = num_node_state(N_ONLINE);
462 : }
463 :
464 : static inline void node_set_offline(int nid)
465 : {
466 : node_clear_state(nid, N_ONLINE);
467 : nr_online_nodes = num_node_state(N_ONLINE);
468 : }
469 :
470 : #else
471 :
472 : static inline int node_state(int node, enum node_states state)
473 : {
474 : return node == 0;
475 : }
476 :
477 : static inline void node_set_state(int node, enum node_states state)
478 : {
479 : }
480 :
481 : static inline void node_clear_state(int node, enum node_states state)
482 : {
483 : }
484 :
485 : static inline int num_node_state(enum node_states state)
486 : {
487 : return 1;
488 : }
489 :
490 : #define for_each_node_state(node, __state) \
491 : for ( (node) = 0; (node) == 0; (node) = 1)
492 :
493 : #define first_online_node 0
494 : #define first_memory_node 0
495 : #define next_online_node(nid) (MAX_NUMNODES)
496 : #define next_memory_node(nid) (MAX_NUMNODES)
497 : #define nr_node_ids 1U
498 : #define nr_online_nodes 1U
499 :
500 : #define node_set_online(node) node_set_state((node), N_ONLINE)
501 : #define node_set_offline(node) node_clear_state((node), N_ONLINE)
502 :
503 : #endif
504 :
505 : static inline int node_random(const nodemask_t *maskp)
506 : {
507 : #if defined(CONFIG_NUMA) && (MAX_NUMNODES > 1)
508 : int w, bit;
509 :
510 : w = nodes_weight(*maskp);
511 : switch (w) {
512 : case 0:
513 : bit = NUMA_NO_NODE;
514 : break;
515 : case 1:
516 : bit = first_node(*maskp);
517 : break;
518 : default:
519 : bit = find_nth_bit(maskp->bits, MAX_NUMNODES, get_random_u32_below(w));
520 : break;
521 : }
522 : return bit;
523 : #else
524 : return 0;
525 : #endif
526 : }
527 :
528 : #define node_online_map node_states[N_ONLINE]
529 : #define node_possible_map node_states[N_POSSIBLE]
530 :
531 : #define num_online_nodes() num_node_state(N_ONLINE)
532 : #define num_possible_nodes() num_node_state(N_POSSIBLE)
533 : #define node_online(node) node_state((node), N_ONLINE)
534 : #define node_possible(node) node_state((node), N_POSSIBLE)
535 :
536 : #define for_each_node(node) for_each_node_state(node, N_POSSIBLE)
537 : #define for_each_online_node(node) for_each_node_state(node, N_ONLINE)
538 :
539 : /*
540 : * For nodemask scratch area.
541 : * NODEMASK_ALLOC(type, name) allocates an object with a specified type and
542 : * name.
543 : */
544 : #if NODES_SHIFT > 8 /* nodemask_t > 32 bytes */
545 : #define NODEMASK_ALLOC(type, name, gfp_flags) \
546 : type *name = kmalloc(sizeof(*name), gfp_flags)
547 : #define NODEMASK_FREE(m) kfree(m)
548 : #else
549 : #define NODEMASK_ALLOC(type, name, gfp_flags) type _##name, *name = &_##name
550 : #define NODEMASK_FREE(m) do {} while (0)
551 : #endif
552 :
553 : /* Example structure for using NODEMASK_ALLOC, used in mempolicy. */
554 : struct nodemask_scratch {
555 : nodemask_t mask1;
556 : nodemask_t mask2;
557 : };
558 :
559 : #define NODEMASK_SCRATCH(x) \
560 : NODEMASK_ALLOC(struct nodemask_scratch, x, \
561 : GFP_KERNEL | __GFP_NORETRY)
562 : #define NODEMASK_SCRATCH_FREE(x) NODEMASK_FREE(x)
563 :
564 :
565 : #endif /* __LINUX_NODEMASK_H */
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