From 2eba51a69a7aba82bd4639a71b0906be7e23ca5c Mon Sep 17 00:00:00 2001 From: Brett Holman Date: Fri, 21 May 2021 16:45:38 -0600 Subject: [PATCH] bcachefs: rewrote prefetch asm in gas syntax for clang compatibility Signed-off-by: Brett Holman Signed-off-by: Kent Overstreet --- fs/bcachefs/bset.c | 12 +++++------- 1 file 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