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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-15 12:19:38 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-15 12:19:38 -0400
commit227423904c709a8e60245c97081bbeb4fb500655 (patch)
tree97db1b8df1e4518334aea2fdf60363e0a691eb1e /include/linux
parent1aaf2e59135fd67321f47c11c64a54aac27014e9 (diff)
parentfa526d0d641b5365676a1fb821ce359e217c9b85 (diff)
Merge branch 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, pat: Fix cacheflush address in change_page_attr_set_clr() mm: remove !NUMA condition from PAGEFLAGS_EXTENDED condition set x86: Fix earlyprintk=dbgp for machines without NX x86, pat: Sanity check remap_pfn_range for RAM region x86, pat: Lookup the protection from memtype list on vm_insert_pfn() x86, pat: Add lookup_memtype to get the current memtype of a paddr x86, pat: Use page flags to track memtypes of RAM pages x86, pat: Generalize the use of page flag PG_uncached x86, pat: Add rbtree to do quick lookup in memtype tracking x86, pat: Add PAT reserve free to io_mapping* APIs x86, pat: New i/f for driver to request memtype for IO regions x86, pat: ioremap to follow same PAT restrictions as other PAT users x86, pat: Keep identity maps consistent with mmaps even when pat_disabled x86, mtrr: make mtrr_aps_delayed_init static bool x86, pat/mtrr: Rendezvous all the cpus for MTRR/PAT init generic-ipi: Allow cpus not yet online to call smp_call_function with irqs disabled x86: Fix an incorrect argument of reserve_bootmem() x86: Fix system crash when loading with "reservetop" parameter
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/io-mapping.h17
-rw-r--r--include/linux/page-flags.h4
2 files changed, 14 insertions, 7 deletions
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index 0adb0f91568c..97eb928b4924 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -49,23 +49,30 @@ static inline struct io_mapping *
49io_mapping_create_wc(resource_size_t base, unsigned long size) 49io_mapping_create_wc(resource_size_t base, unsigned long size)
50{ 50{
51 struct io_mapping *iomap; 51 struct io_mapping *iomap;
52 52 pgprot_t prot;
53 if (!is_io_mapping_possible(base, size))
54 return NULL;
55 53
56 iomap = kmalloc(sizeof(*iomap), GFP_KERNEL); 54 iomap = kmalloc(sizeof(*iomap), GFP_KERNEL);
57 if (!iomap) 55 if (!iomap)
58 return NULL; 56 goto out_err;
57
58 if (iomap_create_wc(base, size, &prot))
59 goto out_free;
59 60
60 iomap->base = base; 61 iomap->base = base;
61 iomap->size = size; 62 iomap->size = size;
62 iomap->prot = pgprot_writecombine(__pgprot(__PAGE_KERNEL)); 63 iomap->prot = prot;
63 return iomap; 64 return iomap;
65
66out_free:
67 kfree(iomap);
68out_err:
69 return NULL;
64} 70}
65 71
66static inline void 72static inline void
67io_mapping_free(struct io_mapping *mapping) 73io_mapping_free(struct io_mapping *mapping)
68{ 74{
75 iomap_free(mapping->base, mapping->size);
69 kfree(mapping); 76 kfree(mapping);
70} 77}
71 78
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index e2e5ce543595..2b87acfc5f87 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -99,7 +99,7 @@ enum pageflags {
99#ifdef CONFIG_HAVE_MLOCKED_PAGE_BIT 99#ifdef CONFIG_HAVE_MLOCKED_PAGE_BIT
100 PG_mlocked, /* Page is vma mlocked */ 100 PG_mlocked, /* Page is vma mlocked */
101#endif 101#endif
102#ifdef CONFIG_IA64_UNCACHED_ALLOCATOR 102#ifdef CONFIG_ARCH_USES_PG_UNCACHED
103 PG_uncached, /* Page has been mapped as uncached */ 103 PG_uncached, /* Page has been mapped as uncached */
104#endif 104#endif
105 __NR_PAGEFLAGS, 105 __NR_PAGEFLAGS,
@@ -257,7 +257,7 @@ PAGEFLAG_FALSE(Mlocked)
257 SETPAGEFLAG_NOOP(Mlocked) TESTCLEARFLAG_FALSE(Mlocked) 257 SETPAGEFLAG_NOOP(Mlocked) TESTCLEARFLAG_FALSE(Mlocked)
258#endif 258#endif
259 259
260#ifdef CONFIG_IA64_UNCACHED_ALLOCATOR 260#ifdef CONFIG_ARCH_USES_PG_UNCACHED
261PAGEFLAG(Uncached, uncached) 261PAGEFLAG(Uncached, uncached)
262#else 262#else
263PAGEFLAG_FALSE(Uncached) 263PAGEFLAG_FALSE(Uncached)