On Mon, Apr 21, 2014 at 05:38:34PM -0700, Luis R. Rodriguez wrote:
> [0] mcgrof@ergon ~/linux (git::master)$ git log c5905afb..v3.5| grep
> ^commit | wc -l
> 24878
> [1] mcgrof@ergon ~/linux (git::master)$ git log c5905afb..v3.4| grep
> ^commit | wc -l
> 13106
> [2] mcgrof@ergon ~/linux (git::master)$ git log c5905afb..v3.3| grep
> ^commit | wc -l
> 1360
From gitrevisions(7), r1..r2 is “commits that are reachable from r2
excluding those that are reachable from r1”. Using Peff's example:
On Thu, Apr 17, 2014 at 06:16:20PM -0400, Jeff King wrote:
> ---A---B---C-----D---E---F (maint, v3.4)
> \ \ /
> \ ---G-----H---I (master, v4.0)
> \ / /
> ------J---
>
> The fix is J, and it got merged up to maint at D, and to master at H.
> v4.0 does not contain v3.4. What's the best description of J?
J..v3.4 is going to include B, C, D, E and F. However, the “distance”
used by ‘git describe’ uses the shortest path between the commits
(J-D-E-F), which doesn't care about development between A and D.
> The results for command [2] above however a bit surprising, I'd take a
> look but I should go back to look at other stuff, figured I'd at least
> bring it up now as it seems relevant.
Here's a simplified graph with d1-* tags for the v3.5-rc1~120^3~76^2
description and d2-* tags for the v3.4~479^2~9^2 description [1]:
* f8f5701 (tag: v3.5-rc1) Linux 3.5-rc1
* 912afc3 (tag: d1-F) Merge tag 'dm-3.5-changes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm
* 56edab3 (tag: d1-E) Merge branches 'perf-urgent-for-linus' and 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
|\
| * ab0cce5 (tag: d1-D) Revert "sched, perf: Use a single callback into the scheduler"
| * 26252ea (tag: d1-C-1, tag: d1-C) perf evlist: Show event attribute details
| * a385ec4 (tag: d1-C-64) Merge tag 'v3.4-rc2' into perf/core
| |\
| * \ 659c36f (tag: d1-C-65) Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
| |\ \
| | * | 5a7ed29 (tag: d1-C-65-2) perf record: Use sw counter only if hw pmu is not detected
* | |/ 76e10d1 (tag: v3.4) Linux 3.4
| |/|
|/| |
* |/ dd775ae (tag: v3.4-rc1) Linux 3.4-rc1
|/|
* | c5bc437 Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
|\|
| * 9521d83 (tag: d1-C-66) Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
* | 9c2b957 (tag: d2-E) Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
|\ \
| |/
| * bea95c1 (tag: d2-D, tag: d1-C-67) Merge branch 'perf/hw-branch-sampling' into perf/core
| * f9b4eeb (tag: d2-C, tag: d1-C-68) perf/x86: Prettify pmu config literals
| * a706d4f (tag: d2-B, tag: d1-C-76, tag: d1-B) Merge branch 'perf/jump-labels' into perf/core
| * c5905af (tag: A) static keys: Introduce 'struct static_key', static_key_true()/false() and static_key_slow_[inc|dec]()
* | c16fa4f (tag: v3.3) Linux 3.3
|/
* dcd6c92 (tag: v3.3-rc1) Linux 3.3-rc1
This shows the v3.4-rc1 bypass from 9521d83 (d1-C-66) to 659c36f
(d1-C-65) which sets up the v3.5-rc1~120^3~76 description. It also
shows the c5905afb..v3.3 commits on the branch from c5905af's fork
(between v3.3-rc1 and v3.3) and v3.3.
Cheers,
Trevor
[1]: The simplified graph is from:
$ git tag A c5905afb
$ git tag d1-B v3.5-rc1~120^3~76
$ git tag d1-C v3.5-rc1~120^3~1
$ git tag d1-D v3.5-rc1~120^3
$ git tag d1-E v3.5-rc1~120
$ git tag d1-F v3.5-rc1~1
$ for x in $(seq 76); do git tag d1-C-$x v3.5-rc1~120^3~$x; done
$ git tag d1-C-65-2 d1-C-65^2
$ git tag d2-B v3.4~479^2~9
$ git tag d2-C v3.4~479^2~1
$ git tag d2-D v3.4~479^2
$ git tag d2-E v3.4~479
$ git tag -d sound-fixes sound-3.4 v3.3-rc{2,3,4,5,6,7} v3.4-rc{2,3,4,5,6,7}
$ git log --graph --topo-order --oneline --decorate --simplify-by-decoration v3.5-rc1
…simplified graph…
$ git tag -d A d1-{B,C,D,E,F} d2-{B,C,D,E} d1-C-65-2
$ for x in $(seq 76); do git tag -d d1-C-$x; done
With some additional tweaks to cull the d1-C-* bits we don't care
about and clear up the 659c36f (d1-C-65) merge.
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