diff options
author | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-06-28 14:06:39 -0400 |
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committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-06-28 14:06:39 -0400 |
commit | f28e71617ddaf2483e3e5c5237103484a303743f (patch) | |
tree | 67627d2d8ddbf6a4449371e9261d796c013b1fa1 /kernel/resource.c | |
parent | dc6a78f1af10d28fb8c395034ae1e099b85c05b0 (diff) | |
parent | a39727f212426b9d5f9267b3318a2afaf9922d3b (diff) |
Merge ../linux-2.6/
Conflicts:
drivers/scsi/aacraid/comminit.c
Fixed up by removing the now renamed CONFIG_IOMMU option from
aacraid
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'kernel/resource.c')
-rw-r--r-- | kernel/resource.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/kernel/resource.c b/kernel/resource.c index e3080fcc66a3..2404f9b0bc47 100644 --- a/kernel/resource.c +++ b/kernel/resource.c | |||
@@ -232,6 +232,44 @@ int release_resource(struct resource *old) | |||
232 | 232 | ||
233 | EXPORT_SYMBOL(release_resource); | 233 | EXPORT_SYMBOL(release_resource); |
234 | 234 | ||
235 | #ifdef CONFIG_MEMORY_HOTPLUG | ||
236 | /* | ||
237 | * Finds the lowest memory reosurce exists within [res->start.res->end) | ||
238 | * the caller must specify res->start, res->end, res->flags. | ||
239 | * If found, returns 0, res is overwritten, if not found, returns -1. | ||
240 | */ | ||
241 | int find_next_system_ram(struct resource *res) | ||
242 | { | ||
243 | resource_size_t start, end; | ||
244 | struct resource *p; | ||
245 | |||
246 | BUG_ON(!res); | ||
247 | |||
248 | start = res->start; | ||
249 | end = res->end; | ||
250 | |||
251 | read_lock(&resource_lock); | ||
252 | for (p = iomem_resource.child; p ; p = p->sibling) { | ||
253 | /* system ram is just marked as IORESOURCE_MEM */ | ||
254 | if (p->flags != res->flags) | ||
255 | continue; | ||
256 | if (p->start > end) { | ||
257 | p = NULL; | ||
258 | break; | ||
259 | } | ||
260 | if (p->start >= start) | ||
261 | break; | ||
262 | } | ||
263 | read_unlock(&resource_lock); | ||
264 | if (!p) | ||
265 | return -1; | ||
266 | /* copy data */ | ||
267 | res->start = p->start; | ||
268 | res->end = p->end; | ||
269 | return 0; | ||
270 | } | ||
271 | #endif | ||
272 | |||
235 | /* | 273 | /* |
236 | * Find empty slot in the resource tree given range and alignment. | 274 | * Find empty slot in the resource tree given range and alignment. |
237 | */ | 275 | */ |