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author | Tony Luck <tony.luck@intel.com> | 2005-10-20 10:41:44 -0700 |
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committer | Tony Luck <tony.luck@intel.com> | 2005-10-20 10:41:44 -0700 |
commit | 9cec58dc138d6fcad9f447a19c8ff69f6540e667 (patch) | |
tree | 4fe1cca94fdba8b705c87615bee06d3346f687ce /lib | |
parent | 17e5ad6c0ce5a970e2830d0de8bdd60a2f077d38 (diff) | |
parent | ac9b9c667c2e1194e22ebe0a441ae1c37aaa9b90 (diff) | |
download | kernel_samsung_espresso10-9cec58dc138d6fcad9f447a19c8ff69f6540e667.zip kernel_samsung_espresso10-9cec58dc138d6fcad9f447a19c8ff69f6540e667.tar.gz kernel_samsung_espresso10-9cec58dc138d6fcad9f447a19c8ff69f6540e667.tar.bz2 |
Update from upstream with manual merge of Yasunori Goto's
changes to swiotlb.c made in commit 281dd25cdc0d6903929b79183816d151ea626341
since this file has been moved from arch/ia64/lib/swiotlb.c to
lib/swiotlb.c
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'lib')
-rw-r--r-- | lib/.gitignore | 6 | ||||
-rw-r--r-- | lib/dec_and_lock.c | 35 | ||||
-rw-r--r-- | lib/radix-tree.c | 2 | ||||
-rw-r--r-- | lib/swiotlb.c | 4 | ||||
-rw-r--r-- | lib/ts_bm.c | 2 | ||||
-rw-r--r-- | lib/ts_fsm.c | 2 | ||||
-rw-r--r-- | lib/ts_kmp.c | 2 |
7 files changed, 47 insertions, 6 deletions
diff --git a/lib/.gitignore b/lib/.gitignore new file mode 100644 index 0000000..3bef1ea --- /dev/null +++ b/lib/.gitignore @@ -0,0 +1,6 @@ +# +# Generated files +# +gen_crc32table +crc32table.h + diff --git a/lib/dec_and_lock.c b/lib/dec_and_lock.c index 2377af0..305a966 100644 --- a/lib/dec_and_lock.c +++ b/lib/dec_and_lock.c @@ -1,7 +1,41 @@ #include <linux/module.h> #include <linux/spinlock.h> #include <asm/atomic.h> +#include <asm/system.h> +#ifdef __HAVE_ARCH_CMPXCHG +/* + * This is an implementation of the notion of "decrement a + * reference count, and return locked if it decremented to zero". + * + * This implementation can be used on any architecture that + * has a cmpxchg, and where atomic->value is an int holding + * the value of the atomic (i.e. the high bits aren't used + * for a lock or anything like that). + */ +int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock) +{ + int counter; + int newcount; + + for (;;) { + counter = atomic_read(atomic); + newcount = counter - 1; + if (!newcount) + break; /* do it the slow way */ + + newcount = cmpxchg(&atomic->counter, counter, newcount); + if (newcount == counter) + return 0; + } + + spin_lock(lock); + if (atomic_dec_and_test(atomic)) + return 1; + spin_unlock(lock); + return 0; +} +#else /* * This is an architecture-neutral, but slow, * implementation of the notion of "decrement @@ -33,5 +67,6 @@ int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock) spin_unlock(lock); return 0; } +#endif EXPORT_SYMBOL(_atomic_dec_and_lock); diff --git a/lib/radix-tree.c b/lib/radix-tree.c index 6a8bc6e..d1c057e7 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -110,7 +110,7 @@ radix_tree_node_free(struct radix_tree_node *node) * success, return zero, with preemption disabled. On error, return -ENOMEM * with preemption not disabled. */ -int radix_tree_preload(unsigned int __nocast gfp_mask) +int radix_tree_preload(gfp_t gfp_mask) { struct radix_tree_preload *rtp; struct radix_tree_node *node; diff --git a/lib/swiotlb.c b/lib/swiotlb.c index c2fc470..5bdeaae 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -142,8 +142,8 @@ swiotlb_init_with_default_size (size_t default_size) /* * Get IO TLB memory from the low pages */ - io_tlb_start = alloc_bootmem_low_pages(io_tlb_nslabs * - (1 << IO_TLB_SHIFT)); + io_tlb_start = alloc_bootmem_low_pages_limit(io_tlb_nslabs * + (1 << IO_TLB_SHIFT), 0x100000000); if (!io_tlb_start) panic("Cannot allocate SWIOTLB buffer"); io_tlb_end = io_tlb_start + io_tlb_nslabs * (1 << IO_TLB_SHIFT); diff --git a/lib/ts_bm.c b/lib/ts_bm.c index 2cc79112..8a8b3a1 100644 --- a/lib/ts_bm.c +++ b/lib/ts_bm.c @@ -127,7 +127,7 @@ static void compute_prefix_tbl(struct ts_bm *bm, const u8 *pattern, } static struct ts_config *bm_init(const void *pattern, unsigned int len, - int gfp_mask) + gfp_t gfp_mask) { struct ts_config *conf; struct ts_bm *bm; diff --git a/lib/ts_fsm.c b/lib/ts_fsm.c index d27c0a0..ca32112 100644 --- a/lib/ts_fsm.c +++ b/lib/ts_fsm.c @@ -258,7 +258,7 @@ found_match: } static struct ts_config *fsm_init(const void *pattern, unsigned int len, - int gfp_mask) + gfp_t gfp_mask) { int i, err = -EINVAL; struct ts_config *conf; diff --git a/lib/ts_kmp.c b/lib/ts_kmp.c index 73266b9..7fd4545 100644 --- a/lib/ts_kmp.c +++ b/lib/ts_kmp.c @@ -87,7 +87,7 @@ static inline void compute_prefix_tbl(const u8 *pattern, unsigned int len, } static struct ts_config *kmp_init(const void *pattern, unsigned int len, - int gfp_mask) + gfp_t gfp_mask) { struct ts_config *conf; struct ts_kmp *kmp; |