From 0e47bca0f7592f8053ffcc530d8afa1d2e364563 Mon Sep 17 00:00:00 2001 From: Victoria Dye Date: Thu, 10 Nov 2022 19:06:03 +0000 Subject: reset: use 'skip_cache_tree_update' option Enable the 'skip_cache_tree_update' option in the variants that call 'prime_cache_tree()' after 'unpack_trees()' (specifically, 'git reset --mixed' and 'git reset --hard'). This avoids redundantly rebuilding the cache tree in both 'cache_tree_update()' at the end of 'unpack_trees()' and in 'prime_cache_tree()', resulting in a small (but consistent) performance improvement. From the newly-added 'p7102-reset.sh' test: Test before after -------------------------------------------------------------------- 7102.1: reset --hard (...) 2.11(0.40+1.54) 1.97(0.38+1.47) -6.6% Signed-off-by: Victoria Dye Signed-off-by: Taylor Blau --- builtin/reset.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'builtin') diff --git a/builtin/reset.c b/builtin/reset.c index fdce6f8c85..ab02777482 100644 --- a/builtin/reset.c +++ b/builtin/reset.c @@ -73,9 +73,11 @@ static int reset_index(const char *ref, const struct object_id *oid, int reset_t case HARD: opts.update = 1; opts.reset = UNPACK_RESET_OVERWRITE_UNTRACKED; + opts.skip_cache_tree_update = 1; break; case MIXED: opts.reset = UNPACK_RESET_PROTECT_UNTRACKED; + opts.skip_cache_tree_update = 1; /* but opts.update=0, so working tree not updated */ break; default: -- cgit v1.3-5-g9baa