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| author | Brett Holman <bpholman5@gmail.com> | 2021-05-21 16:45:38 -0600 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:09:04 -0400 |
| commit | 2eba51a69a7aba82bd4639a71b0906be7e23ca5c (patch) | |
| tree | 46b8dd7269cba025da5be844bd0fb23a94d3e218 | |
| parent | 1ce0cf5fe9300f28e834e6fa001cc5a114cd0493 (diff) | |
| download | lwn-2eba51a69a7aba82bd4639a71b0906be7e23ca5c.tar.gz lwn-2eba51a69a7aba82bd4639a71b0906be7e23ca5c.zip | |
bcachefs: rewrote prefetch asm in gas syntax for clang compatibility
Signed-off-by: Brett Holman <bpholman5@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
| -rw-r--r-- | fs/bcachefs/bset.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/fs/bcachefs/bset.c b/fs/bcachefs/bset.c index e569d9a9b906..84c4664c9912 100644 --- a/fs/bcachefs/bset.c +++ b/fs/bcachefs/bset.c @@ -1181,13 +1181,11 @@ static struct bkey_packed *bset_search_write_set(const struct btree *b, static inline void prefetch_four_cachelines(void *p) { -#if (CONFIG_X86_64 && !defined(__clang__)) - asm(".intel_syntax noprefix;" - "prefetcht0 [%0 - 127 + 64 * 0];" - "prefetcht0 [%0 - 127 + 64 * 1];" - "prefetcht0 [%0 - 127 + 64 * 2];" - "prefetcht0 [%0 - 127 + 64 * 3];" - ".att_syntax prefix;" +#if CONFIG_X86_64 + asm("prefetcht0 (-127 + 64 * 0)(%0);" + "prefetcht0 (-127 + 64 * 1)(%0);" + "prefetcht0 (-127 + 64 * 2)(%0);" + "prefetcht0 (-127 + 64 * 3)(%0);" : : "r" (p + 127)); #else |