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Elijah Newren 1aedd03afb diffcore-rename: use a different prefetch for basename comparisons merge-ort was designed to minimize the amount of data needed and used, and several changes were made to diffcore-rename to take advantage of extra metadata to enable this data minimization (particularly the relevant_sources variable for skipping "irrelevant" renames). This effort obviously succeeded in drastically reducing computation times, but should also theoretically allow partial clones to download much less information. Previously, though, the "prefetch" command used in diffcore-rename had never been modified and downloaded many blobs that were unnecessary for merge-ort. This commit corrects that. When doing basename comparisons, we want to fetch only the objects that will be used for basename comparisons. If after basename fetching this leaves us with no more relevant sources (or no more destinations), then we won't need to do the full inexact rename detection and can skip downloading additional source and destination files. Even if we have to do that later full inexact rename detection, irrelevant sources are culled after basename matching and before the full inexact rename detection, so we can still avoid downloading the blobs for irrelevant sources. Rename prefetch() to inexact_prefetch(), and introduce a new basename_prefetch() to take advantage of this. If we modify the testcase from commit `557ac0350d` ("merge-ort: begin performance work; instrument with trace2_region_* calls", 2021-01-23) to pass --sparse --filter=blob:none to the clone command, and use the new trace2 "fetch_count" output from a few commits ago to track both the number of fetch subcommands invoked and the number of objects fetched across all those fetches, then for the mega-renames testcase we observe the following: BEFORE this commit, rebasing 35 patches: strategy # of fetches total # of objects fetched --------- ------------ -------------------------- recursive 62 11423 ort 30 11391 AFTER this commit, rebasing the same 35 patches: ort 32 63 This means that the new code only needs to download less than 2 blobs per patch being rebased. That is especially interesting given that the repository at the start only had approximately half a dozen TOTAL blobs downloaded to start with (because the default sparse-checkout of just the toplevel directory was in use). So, for this particular linux kernel testcase that involved ~26,000 renames on the upstream side (drivers/ -> pilots/) across which 35 patches were being rebased, this change reduces the number of blobs that need to be downloaded by a factor of ~180. Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>		2021-06-28 07:58:25 -07:00
.github	cmake(install): include vcpkg dlls	2021-03-29 13:49:04 -07:00
Documentation	The second batch	2021-06-14 13:34:28 +09:00
block-sha1	block-sha1: drop trailing semicolon from macro definition	2021-03-17 10:20:01 -07:00
builtin	Merge branch 'so/log-m-implies-p'	2021-06-14 13:33:27 +09:00
ci	Merge branch 'mt/parallel-checkout-part-3'	2021-05-16 21:05:23 +09:00
compat	Merge branch 'jh/simple-ipc-sans-pthread'	2021-05-22 18:29:01 +09:00
contrib	contrib/completion: fix zsh completion regression from `59d85a2a05`	2021-06-02 12:49:40 +09:00
ewah	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
git-gui	Merge https://github.com/prati0100/git-gui	2021-03-04 12:38:50 -08:00
gitk-git	…
gitweb	gitweb: add "e-mail privacy" feature to redact e-mail addresses	2021-04-08 15:54:26 -07:00
mergetools	mergetools/vimdiff: add vimdiff1 merge tool variant	2021-02-23 11:37:13 -08:00
negotiator	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
perl	Merge branch 'so/log-m-implies-p'	2021-06-14 13:33:27 +09:00
po	l10n: es: 2.32.0 round 1	2021-06-05 20:06:23 -05:00
ppc	…
refs	Merge branch 'wc/packed-ref-removal-cleanup'	2021-05-16 21:05:24 +09:00
sha1collisiondetection@855827c583	…
sha1dc	…
sha256	…
t	diffcore-rename: use a different prefetch for basename comparisons	2021-06-28 07:58:25 -07:00
templates	…
trace2	Merge branch 'ab/trace2-squelch-gcc-warning'	2021-06-14 13:33:28 +09:00
xdiff	Merge branch 'pw/patience-diff-clean-up'	2021-05-14 08:26:08 +09:00
.cirrus.yml	…
.clang-format	…
.editorconfig	…
.gitattributes	…
.gitignore	Merge branch 'ls/subtree'	2021-05-10 16:59:47 +09:00
.gitmodules	…
.mailmap	Add entry for Ramkumar Ramachandra	2021-03-08 09:56:34 -08:00
.travis.yml	…
.tsan-suppressions	…
CODE_OF_CONDUCT.md	…
COPYING	…
GIT-VERSION-GEN	Git 2.32	2021-06-06 15:40:01 +09:00
INSTALL	INSTALL: note on using Asciidoctor to build doc	2021-03-19 10:49:20 -07:00
LGPL-2.1	…
Makefile	Merge branch 'jh/simple-ipc-sans-pthread'	2021-05-22 18:29:01 +09:00
README.md	…
RelNotes	The first batch post Git 2.32	2021-06-10 12:04:27 +09:00
SECURITY.md	SECURITY: describe how to report vulnerabilities	2021-03-27 15:13:02 -07:00
abspath.c	…
aclocal.m4	…
add-interactive.c	Merge branch 'rs/xcalloc-takes-nelem-first'	2021-03-19 15:25:39 -07:00
add-interactive.h	…
add-patch.c	…
advice.c	add: warn when asked to update SKIP_WORKTREE entries	2021-04-08 14:18:03 -07:00
advice.h	add: warn when asked to update SKIP_WORKTREE entries	2021-04-08 14:18:03 -07:00
alias.c	…
alias.h	…
alloc.c	…
alloc.h	…
apply.c	Merge branch 'jz/apply-3way-first-message-fix'	2021-05-07 12:47:38 +09:00
apply.h	…
archive-tar.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
archive-zip.c	…
archive.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
archive.h	archive: expand only a single %(describe) per archive	2021-03-11 13:22:44 -08:00
attr.c	Merge branch 'ds/sparse-index-protections'	2021-04-30 13:50:26 +09:00
attr.h	*: remove 'const' qualifier for struct index_state	2021-04-14 13:46:00 -07:00
banned.h	…
base85.c	…
bisect.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
bisect.h	…
blame.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
blame.h	…
blob.c	…
blob.h	…
bloom.c	Merge branch 'ah/plugleaks'	2021-05-07 12:47:41 +09:00
bloom.h	…
branch.c	Merge branch 'bc/hash-transition-interop-part-1'	2021-05-10 16:59:46 +09:00
branch.h	…
builtin.h	parallel-checkout: make it truly parallel	2021-04-19 11:57:05 -07:00
bulk-checkin.c	Use the final_oid_fn to finalize hashing of object IDs	2021-04-27 16:31:38 +09:00
bulk-checkin.h	…
bundle.c	…
bundle.h	…
cache-tree.c	Merge branch 'ds/sparse-index-protections'	2021-04-30 13:50:26 +09:00
cache-tree.h	…
cache.h	Merge branch 'mt/parallel-checkout-part-3'	2021-05-16 21:05:23 +09:00
chdir-notify.c	…
chdir-notify.h	…
check-builtins.sh	…
check_bindir	…
checkout.c	…
checkout.h	…
chunk-format.c	csum-file.h: increase hashfile buffer size	2021-05-19 16:41:21 +09:00
chunk-format.h	chunk-format: create read chunk API	2021-02-18 13:38:16 -08:00
color.c	…
color.h	…
column.c	…
column.h	…
combine-diff.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
command-list.txt	…
commit-graph.c	commit-graph: don't store file hashes as struct object_id	2021-04-27 16:31:39 +09:00
commit-graph.h	commit-graph: use config to specify generation type	2021-02-25 15:10:41 -08:00
commit-reach.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
commit-reach.h	…
commit-slab-decl.h	…
commit-slab-impl.h	…
commit-slab.h	…
commit.c	Merge branch 'cm/rebase-i-fixup-amend-reword'	2021-03-26 14:59:03 -07:00
commit.h	Merge branch 'cm/rebase-i-fixup-amend-reword'	2021-03-26 14:59:03 -07:00
common-main.c	…
config.c	Merge branch 'ps/config-global-override'	2021-05-07 12:47:39 +09:00
config.h	config: unify code paths to get global config paths	2021-04-19 14:16:59 -07:00
config.mak.dev	…
config.mak.in	…
config.mak.uname	Merge branch 'jh/simple-ipc'	2021-04-02 14:43:14 -07:00
configure.ac	…
connect.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
connect.h	…
connected.c	…
connected.h	…
convert.c	Merge branch 'ds/sparse-index-protections'	2021-04-30 13:50:26 +09:00
convert.h	Merge branch 'ds/sparse-index-protections'	2021-04-30 13:50:26 +09:00
copy.c	…
credential.c	…
credential.h	…
csum-file.c	csum-file.h: increase hashfile buffer size	2021-05-19 16:41:21 +09:00
csum-file.h	csum-file.h: increase hashfile buffer size	2021-05-19 16:41:21 +09:00
ctype.c	…
daemon.c	Merge branch 'rs/daemon-sanitize-dir-sep'	2021-04-08 13:23:26 -07:00
date.c	…
decorate.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
decorate.h	…
delta-islands.c	…
delta-islands.h	…
delta.h	…
detect-compiler	…
diff-delta.c	…
diff-lib.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
diff-merges.c	diff-merges: let "-m" imply "-p"	2021-05-21 09:24:14 +09:00
diff-merges.h	diff-merges: move specific diff-index "-m" handling to diff-index	2021-05-21 09:24:14 +09:00
diff-no-index.c	dir: introduce readdir_skip_dot_and_dotdot() helper	2021-05-27 14:02:37 +09:00
diff.c	Merge branch 'pw/word-diff-zero-width-matches'	2021-05-14 08:26:06 +09:00
diff.h	Merge branch 'jc/diffcore-rotate'	2021-02-25 16:43:30 -08:00
diffcore-break.c	…
diffcore-delta.c	…
diffcore-order.c	…
diffcore-pickaxe.c	…
diffcore-rename.c	diffcore-rename: use a different prefetch for basename comparisons	2021-06-28 07:58:25 -07:00
diffcore-rotate.c	diff: --{rotate,skip}-to=<path>	2021-02-16 09:30:42 -08:00
diffcore.h	Merge branch 'en/ort-perf-batch-11'	2021-06-14 13:33:27 +09:00
dir-iterator.c	…
dir-iterator.h	…
dir.c	Merge branch 'en/dir-traversal'	2021-05-28 13:03:00 +09:00
dir.h	dir: introduce readdir_skip_dot_and_dotdot() helper	2021-05-27 14:02:37 +09:00
editor.c	…
entry.c	dir: introduce readdir_skip_dot_and_dotdot() helper	2021-05-27 14:02:37 +09:00
entry.h	entry: add checkout_entry_ca() taking preloaded conv_attrs	2021-03-23 10:34:05 -07:00
environment.c	…
environment.h	…
exec-cmd.c	…
exec-cmd.h	…
fetch-negotiator.c	…
fetch-negotiator.h	…
fetch-pack.c	fetch-pack: signal v2 server that we are done making requests	2021-05-20 07:38:40 +09:00
fetch-pack.h	fetch: teach independent negotiation (no packfile)	2021-05-05 10:41:29 +09:00
fmt-merge-msg.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
fmt-merge-msg.h	…
fsck.c	fsck: warn about symlinked dotfiles we'll open with O_NOFOLLOW	2021-05-04 11:52:02 +09:00
fsck.h	fsck: warn about symlinked dotfiles we'll open with O_NOFOLLOW	2021-05-04 11:52:02 +09:00
fsmonitor.c	Merge branch 'jh/fsmonitor-prework'	2021-03-19 15:25:37 -07:00
fsmonitor.h	fsmonitor: add assertion that fsmonitor is valid to check_removed	2021-03-18 13:31:13 -07:00
fuzz-commit-graph.c	…
fuzz-pack-headers.c	…
fuzz-pack-idx.c	…
generate-cmdlist.sh	…
generate-configlist.sh	…
gettext.c	Merge branch 'ab/detox-gettext-tests'	2021-02-10 14:48:33 -08:00
gettext.h	…
git-add--interactive.perl	…
git-archimport.perl	…
git-bisect.sh	…
git-compat-util.h	Merge branch 'jn/size-t-casted-to-off-t-fix'	2021-06-10 12:04:23 +09:00
git-cvsexportcommit.perl	…
git-cvsimport.perl	…
git-cvsserver.perl	…
git-difftool--helper.sh	mergetool: break setup_tool out into separate initialization function	2021-02-09 14:09:16 -08:00
git-filter-branch.sh	filter-branch: drop $_x40 glob	2021-03-10 14:16:58 -08:00
git-instaweb.sh	…
git-merge-octopus.sh	…
git-merge-one-file.sh	…
git-merge-resolve.sh	…
git-mergetool--lib.sh	Merge branch 'sh/mergetool-hideresolved'	2021-02-17 17:21:41 -08:00
git-mergetool.sh	mergetool: do not enable hideResolved by default	2021-03-13 15:30:29 -08:00
git-p4.py	git-p4: speed up search for branch parent	2021-05-06 12:51:33 +09:00
git-quiltimport.sh	…
git-rebase--preserve-merges.sh	…
git-request-pull.sh	…
git-send-email.perl	Merge branch 'ga/send-email-sendmail-cmd'	2021-06-14 13:33:26 +09:00
git-sh-i18n.sh	…
git-sh-setup.sh	…
git-submodule.sh	submodule update: silence underlying fetch with "--quiet"	2021-05-03 12:24:38 +09:00
git-svn.perl	…
git-web--browse.sh	…
git.c	Merge branch 'ps/config-env-option-with-separate-value'	2021-05-07 12:47:37 +09:00
git.rc	…
gpg-interface.c	gpg-interface: remove other signature headers before verifying	2021-02-10 23:35:42 -08:00
gpg-interface.h	gpg-interface: improve interface for parsing tags	2021-02-10 23:35:42 -08:00
graph.c	…
graph.h	…
grep.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
grep.h	grep/pcre2: move back to thread-only PCREv2 structures	2021-02-17 16:32:19 -08:00
hash-lookup.c	…
hash-lookup.h	…
hash.h	parallel-checkout: send the new object_id algo field to the workers	2021-05-18 05:38:54 +09:00
hashmap.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
hashmap.h	…
help.c	…
help.h	…
hex.c	hex: print objects using the hash algorithm member	2021-04-27 16:31:39 +09:00
http-backend.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
http-fetch.c	http-fetch: allow custom index-pack args	2021-02-22 12:07:40 -08:00
http-push.c	Merge branch 'bc/hash-transition-interop-part-1'	2021-05-10 16:59:46 +09:00
http-walker.c	Always use oidread to read into struct object_id	2021-04-27 16:31:38 +09:00
http.c	Merge branch 'cs/http-use-basic-after-failed-negotiate'	2021-05-21 05:49:41 +09:00
http.h	http: allow custom index-pack args	2021-02-22 12:07:40 -08:00
ident.c	…
imap-send.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
iterator.h	…
json-writer.c	…
json-writer.h	…
khash.h	…
kwset.c	…
kwset.h	…
levenshtein.c	…
levenshtein.h	…
line-log.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
line-log.h	…
line-range.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
line-range.h	…
linear-assignment.c	…
linear-assignment.h	…
list-objects-filter-options.c	help: fix small typo in error message	2021-05-21 07:52:10 +09:00
list-objects-filter-options.h	list-objects: implement object type filter	2021-04-19 14:09:11 -07:00
list-objects-filter.c	list-objects: implement object type filter	2021-04-19 14:09:11 -07:00
list-objects-filter.h	list-objects: support filtering by tag and commit	2021-04-12 09:35:50 -07:00
list-objects.c	list-objects: support filtering by tag and commit	2021-04-12 09:35:50 -07:00
list-objects.h	…
list.h	…
ll-merge.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
ll-merge.h	…
lockfile.c	…
lockfile.h	…
log-tree.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
log-tree.h	…
ls-refs.c	Merge branch 'jt/clone-unborn-head'	2021-02-17 17:21:40 -08:00
ls-refs.h	…
mailinfo.c	Merge branch 'ef/mailinfo-short-name'	2021-06-10 12:04:22 +09:00
mailinfo.h	am: learn to process quoted lines that ends with CRLF	2021-05-10 15:06:22 +09:00
mailmap.c	Merge branch 'jk/open-dotgitx-with-nofollow'	2021-03-22 14:00:22 -07:00
mailmap.h	…
match-trees.c	Always use oidread to read into struct object_id	2021-04-27 16:31:38 +09:00
mem-pool.c	mem-pool: drop trailing semicolon from macro definition	2021-03-17 10:20:16 -07:00
mem-pool.h	…
merge-blobs.c	…
merge-blobs.h	…
merge-ort-wrappers.c	merge(s): apply consistent punctuation to "up to date" messages	2021-05-03 14:14:56 +09:00
merge-ort-wrappers.h	…
merge-ort.c	Merge branch 'en/ort-perf-batch-11'	2021-06-14 13:33:27 +09:00
merge-ort.h	merge-ort: avoid accidental API mis-use	2021-05-20 15:40:39 +09:00
merge-recursive.c	Merge branch 'js/merge-already-up-to-date-message-reword'	2021-05-11 15:27:22 +09:00
merge-recursive.h	…
merge.c	…
mergesort.c	…
mergesort.h	…
midx.c	Always use oidread to read into struct object_id	2021-04-27 16:31:38 +09:00
midx.h	pack-revindex: write multi-pack reverse indexes	2021-04-01 13:07:37 -07:00
name-hash.c	Merge branch 'ds/sparse-index-protections'	2021-04-30 13:50:26 +09:00
notes-cache.c	…
notes-cache.h	…
notes-merge.c	dir: introduce readdir_skip_dot_and_dotdot() helper	2021-05-27 14:02:37 +09:00
notes-merge.h	…
notes-utils.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
notes-utils.h	…
notes.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
notes.h	…
object-file.c	dir: introduce readdir_skip_dot_and_dotdot() helper	2021-05-27 14:02:37 +09:00
object-name.c	…
object-store.h	packfile: add kept-pack cache for find_kept_pack_entry()	2021-02-22 23:30:52 -08:00
object.c	lookup_unknown_object(): take a repository argument	2021-04-13 13:18:46 -07:00
object.h	Merge branch 'jt/push-negotiation'	2021-05-16 21:05:22 +09:00
oid-array.c	…
oid-array.h	…
oidmap.c	…
oidmap.h	…
oidset.c	…
oidset.h	…
pack-bitmap-write.c	…
pack-bitmap.c	Merge branch 'ps/rev-list-object-type-filter'	2021-05-07 12:47:41 +09:00
pack-bitmap.h	Merge branch 'ps/rev-list-object-type-filter'	2021-05-07 12:47:41 +09:00
pack-check.c	…
pack-objects.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
pack-objects.h	pack-objects: move static inline from a header to the sole consumer	2021-05-27 12:14:41 +09:00
pack-revindex.c	Merge branch 'tb/reverse-midx'	2021-04-08 13:23:25 -07:00
pack-revindex.h	pack-revindex: read multi-pack reverse indexes	2021-04-01 13:07:37 -07:00
pack-write.c	Merge branch 'tb/reverse-midx'	2021-04-08 13:23:25 -07:00
pack.h	Merge branch 'tb/reverse-midx'	2021-04-08 13:23:25 -07:00
packfile.c	dir: introduce readdir_skip_dot_and_dotdot() helper	2021-05-27 14:02:37 +09:00
packfile.h	packfile: introduce 'find_kept_pack_entry()'	2021-02-22 23:30:52 -08:00
pager.c	…
parallel-checkout.c	parallel-checkout: send the new object_id algo field to the workers	2021-05-18 05:38:54 +09:00
parallel-checkout.h	parallel-checkout: support progress displaying	2021-04-19 11:57:05 -07:00
parse-options-cb.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
parse-options.c	parse-options: don't leak alias help messages	2021-03-21 14:39:10 -07:00
parse-options.h	parse-options: don't leak alias help messages	2021-03-21 14:39:10 -07:00
patch-delta.c	…
patch-ids.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
patch-ids.h	…
path.c	t0060: test ntfs/hfs-obscured dotfiles	2021-05-04 11:52:02 +09:00
path.h	merge-ort: write $GIT_DIR/AUTO_MERGE whenever we hit a conflict	2021-03-20 12:35:40 -07:00
pathspec.c	Merge branch 'mt/add-rm-in-sparse-checkout'	2021-05-07 12:47:40 +09:00
pathspec.h	Merge branch 'mt/add-rm-in-sparse-checkout'	2021-05-07 12:47:40 +09:00
pkt-line.c	pkt-line: do not report packet write errors twice	2021-04-15 15:05:31 -07:00
pkt-line.h	pkt-line: add options argument to read_packetized_to_strbuf()	2021-03-15 14:32:50 -07:00
preload-index.c	preload-index: log the number of lstat calls to trace2	2021-02-16 17:14:34 -08:00
pretty.c	pretty: provide human date format	2021-04-27 16:09:32 +09:00
pretty.h	Merge branch 'rs/pretty-describe'	2021-03-22 14:00:24 -07:00
prio-queue.c	…
prio-queue.h	…
progress.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
progress.h	…
promisor-remote.c	promisor-remote: output trace2 statistics for number of objects fetched	2021-06-16 16:17:13 +09:00
promisor-remote.h	…
prompt.c	…
prompt.h	…
protocol-caps.c	object-info: support for retrieving object info	2021-04-20 17:41:13 -07:00
protocol-caps.h	object-info: support for retrieving object info	2021-04-20 17:41:13 -07:00
protocol.c	…
protocol.h	…
prune-packed.c	…
prune-packed.h	…
quote.c	…
quote.h	…
range-diff.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
range-diff.h	Merge branch 'js/range-diff-one-side-only'	2021-02-17 17:21:41 -08:00
reachable.c	Merge branch 'ps/rev-list-object-type-filter'	2021-05-07 12:47:41 +09:00
reachable.h	…
read-cache.c	read-cache: delete unused hashing methods	2021-05-19 16:41:21 +09:00
rebase-interactive.c	rebase -i: clarify and fix 'fixup -c' rebase-todo help	2021-02-10 13:58:19 -08:00
rebase-interactive.h	…
rebase.c	…
rebase.h	…
ref-filter.c	Merge branch 'zh/ref-filter-push-remote-fix'	2021-05-20 08:55:00 +09:00
ref-filter.h	ref-filter: get rid of show_ref_array_item	2021-04-19 15:08:00 -07:00
reflog-walk.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
reflog-walk.h	…
refs.c	Merge branch 'bc/hash-transition-interop-part-1'	2021-05-10 16:59:46 +09:00
refs.h	…
refspec.c	…
refspec.h	…
remote-curl.c	remote-curl: fix clone on sha256 repos	2021-05-12 12:14:44 +09:00
remote.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
remote.h	Merge branch 'jt/clone-unborn-head'	2021-02-17 17:21:40 -08:00
replace-object.c	…
replace-object.h	…
repo-settings.c	sparse-index: add index.sparse config option	2021-03-30 12:57:47 -07:00
repository.c	Merge branch 'ds/sparse-index-protections'	2021-04-30 13:50:26 +09:00
repository.h	sparse-index: add index.sparse config option	2021-03-30 12:57:47 -07:00
rerere.c	dir: introduce readdir_skip_dot_and_dotdot() helper	2021-05-27 14:02:37 +09:00
rerere.h	…
reset.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
reset.h	…
resolve-undo.c	Merge branch 'ds/sparse-index-protections'	2021-04-30 13:50:26 +09:00
resolve-undo.h	…
revision.c	Merge branch 'ah/plugleaks'	2021-05-07 12:47:41 +09:00
revision.h	Merge branch 'so/log-m-implies-p'	2021-06-14 13:33:27 +09:00
run-command.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
run-command.h	…
send-pack.c	send-pack: support push negotiation	2021-05-05 10:41:29 +09:00
send-pack.h	…
sequencer.c	Merge branch 'bc/hash-transition-interop-part-1'	2021-05-10 16:59:46 +09:00
sequencer.h	sequencer: fix edit handling for cherry-pick and revert messages	2021-03-31 14:10:50 -07:00
serve.c	object-info: support for retrieving object info	2021-04-20 17:41:13 -07:00
serve.h	…
server-info.c	use CALLOC_ARRAY	2021-03-13 16:00:09 -08:00
setup.c	setup: split "extensions found" messages into singular and plural	2021-05-20 13:36:58 +09:00
sh-i18n--envsubst.c	…
sha1dc_git.c	…
sha1dc_git.h	…
shallow.c	…
shallow.h	…
shell.c	…
shortlog.h	…
sideband.c	…
sideband.h	…
sigchain.c	…
sigchain.h	…
simple-ipc.h	simple-ipc: correct ifdefs when NO_PTHREADS is defined	2021-05-21 07:55:00 +09:00
sparse-index.c	Merge branch 'ds/sparse-index-protections'	2021-05-21 05:50:38 +09:00
sparse-index.h	sparse-index: expand_to_path()	2021-04-14 13:47:54 -07:00
split-index.c	Always use oidread to read into struct object_id	2021-04-27 16:31:38 +09:00
split-index.h	…
stable-qsort.c	…
strbuf.c	mailinfo: also free strbuf lists when clearing mailinfo	2021-04-28 09:25:45 +09:00
strbuf.h	…
streaming.c	streaming.c: move {open,close,read} from vtable to "struct git_istream"	2021-05-06 12:56:10 +09:00
streaming.h	…
string-list.c	…
string-list.h	…
strmap.c	…
strmap.h	…
strvec.c	…
strvec.h	…
sub-process.c	…
sub-process.h	…
submodule-config.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
submodule-config.h	…
submodule.c	Merge branch 'bc/hash-transition-interop-part-1'	2021-05-10 16:59:46 +09:00
submodule.h	*: remove 'const' qualifier for struct index_state	2021-04-14 13:46:00 -07:00
symlinks.c	checkout: don't follow symlinks when removing entries	2021-03-18 12:58:10 -07:00
tag.c	gpg-interface: improve interface for parsing tags	2021-02-10 23:35:42 -08:00
tag.h	…
tar.h	…
tempfile.c	…
tempfile.h	…
thread-utils.c	…
thread-utils.h	…
tmp-objdir.c	…
tmp-objdir.h	…
trace.c	…
trace.h	…
trace2.c	…
trace2.h	…
trailer.c	trailer: add new .cmd config option	2021-05-04 12:09:43 +09:00
trailer.h	…
transport-helper.c	fetch: teach independent negotiation (no packfile)	2021-05-05 10:41:29 +09:00
transport-internal.h	…
transport.c	fetch-pack: signal v2 server that we are done making requests	2021-05-20 07:38:40 +09:00
transport.h	fetch: teach independent negotiation (no packfile)	2021-05-05 10:41:29 +09:00
tree-diff.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
tree-walk.c	Always use oidread to read into struct object_id	2021-04-27 16:31:38 +09:00
tree-walk.h	…
tree.c	tree.h API: simplify read_tree_recursive() signature	2021-03-20 16:09:26 -07:00
tree.h	tree.h API: simplify read_tree_recursive() signature	2021-03-20 16:09:26 -07:00
unicode-width.h	…
unimplemented.sh	…
unix-socket.c	unix-socket: disallow chdir() when creating unix domain sockets	2021-03-15 14:32:51 -07:00
unix-socket.h	unix-socket: disallow chdir() when creating unix domain sockets	2021-03-15 14:32:51 -07:00
unix-stream-server.c	unix-stream-server: create unix domain socket under lock	2021-03-15 14:32:51 -07:00
unix-stream-server.h	unix-stream-server: create unix domain socket under lock	2021-03-15 14:32:51 -07:00
unpack-trees.c	Merge branch 'mt/parallel-checkout-part-3'	2021-05-16 21:05:23 +09:00
unpack-trees.h	stash show: teach --include-untracked and --only-untracked	2021-03-05 14:31:26 -08:00
upload-pack.c	Merge branch 'jt/push-negotiation'	2021-05-16 21:05:22 +09:00
upload-pack.h	…
url.c	…
url.h	…
urlmatch.c	…
urlmatch.h	…
usage.c	usage.c: don't copy/paste the same comment three times	2021-04-13 14:56:28 -07:00
userdiff.c	Merge branch 'ab/userdiff-tests'	2021-04-20 17:23:34 -07:00
userdiff.h	userdiff: add and use for_each_userdiff_driver()	2021-04-08 12:19:10 -07:00
utf8.c	t0060: test ntfs/hfs-obscured dotfiles	2021-05-04 11:52:02 +09:00
utf8.h	t0060: test ntfs/hfs-obscured dotfiles	2021-05-04 11:52:02 +09:00
varint.c	…
varint.h	…
version.c	…
version.h	…
versioncmp.c	…
walker.c	lookup_unknown_object(): take a repository argument	2021-04-13 13:18:46 -07:00
walker.h	…
wildmatch.c	…
wildmatch.h	…
worktree.c	dir: introduce readdir_skip_dot_and_dotdot() helper	2021-05-27 14:02:37 +09:00
worktree.h	…
wrap-for-bin.sh	…
wrapper.c	add open_nofollow() helper	2021-02-16 09:41:32 -08:00
write-or-die.c	fsync(): be prepared to see EINTR	2021-06-05 22:13:40 +09:00
ws.c	…
wt-status.c	Merge branch 'bc/hash-transition-interop-part-1'	2021-05-10 16:59:46 +09:00
wt-status.h	…
xdiff-interface.c	hash: provide per-algorithm null OIDs	2021-04-27 16:31:39 +09:00
xdiff-interface.h	…
zlib.c	…

README.md

Git - fast, scalable, distributed revision control system

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.

Git is an Open Source project covered by the GNU General Public License version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.

Please read the file INSTALL for installation instructions.

Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.

See Documentation/gittutorial.txt to get started, then see Documentation/giteveryday.txt for a useful minimum set of commands, and Documentation/git-<commandname>.txt for documentation of each command. If git has been correctly installed, then the tutorial can also be read with man gittutorial or git help tutorial, and the documentation of each command with man git-<commandname> or git help <commandname>.

CVS users may also want to read Documentation/gitcvs-migration.txt (man gitcvs-migration or git help cvs-migration if git is installed).

The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org (read Documentation/SubmittingPatches for instructions on patch submission). To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at https://lore.kernel.org/git/, http://marc.info/?l=git and other archival sites.

Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.

The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.

The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (depending on your mood):

random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant.
stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang.
"global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room.
"goddamn idiotic truckload of sh*t": when it breaks