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Message-ID: <20080716135453.GA27148@elte.hu> Date: Wed, 16 Jul 2008 15:54:53 +0200 From: Ingo Molnar <mingo@...e.hu> To: Dave Jones <davej@...hat.com>, Linus Torvalds <torvalds@...ux-foundation.org>, linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com>, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [git pull] x86 changes for v2.6.27 * Dave Jones <davej@...hat.com> wrote: > On Mon, Jul 14, 2008 at 03:50:35PM +0200, Ingo Molnar wrote: > > Linus, > > > > Please pull the latest x86 git tree from: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86/for-linus > > > > this is our first merge window since we migrated over to a pure Git > > based patch management setup and integrated x86.git into the -tip tree. > > Going from Quilt to Git was quite hard for this > > 1000-patches-per-kernel-cycle tree, so please bear with us :-) > > > > 42 individual x86 topic trees arose in the past development cycle: > > > > x86/amd-iommu, x86/apic, x86/apm, x86/bitops, x86/build, x86/cleanups, > > x86/core, x86/cpa, x86/cpu, x86/debug, x86/defconfig, x86/delay, > > x86/fixmap, x86/gart, x86/generalize-visws, x86/i8259, x86/idle, x86/intel, > > x86/irq, x86/irqstats, x86/kconfig, x86/ldt, x86/mce, x86/memtest, x86/mmio, > > x86/mpparse, x86/nmi, x86/numa, x86/numa-fixes, x86/oprofile, x86/pat, > > x86/ptemask, x86/ptrace, x86/resumetrace, x86/setup, x86/threadinfo, > > x86/timers, x86/unify-lib, x86/unify-pci, x86/uv, x86/vdso, x86/xen. > > > > .. carrying a total of 820 (non-git-merge) commits from 70 authors. > > Wow. > > 6924d1ab8b7bbe5ab416713f5701b3316b2df85b is a work of art. > Is it ascii-art tetris? a magic eye picture? you decide! > > It looks even more spectacular in gitk. heh, thanks :) Being able to shuffle around independent topics and only sending those which were ready was the single biggest advantage that quilt had for us. So we tried hard to keep the same workflow property under git as well. We were sceptical in the beginning due to git's fundamental append-only nature but after a ton of scripting by Thomas and me it turned out to be doable under git as well. In hindsight going to a pure git workflow worked out pretty well i think and Linus was right when he suggested that we'd be happier with a pure git workflow. We are now roughly back to the same speed and reliability of processing incoming patches as we were under quilt with the monolothic x86 and sched-devel trees and the end result is (much) more structured so it's a marked improvement. ... so we've got all the advantages of a quilt workflow, and all the advantages of git as well, combined. Scripted per topic progress reports like the one below were unthinkable under quilt. So there's no looking back :-) Ingo --------------------------------------------------------------------> earth4:~/tip> tip-pending topic #commits ------------------------------------------------ acpi-for-len : 2 core/futex-64bit : 1 core/generic-dma-coherent : 1 core/kill-the-BKL : 18 core/misc : 2 core/percpu : 3 core/percpu-zerobased : 4 core/softlockup : 8 core/warn-API : 15 cpus4096 : 13 kmemcheck : 20 out-of-tree : 16 pci-for-jesse : 1 safe-poison-pointers : 1 stackprotector : 18 timers/hpet : 2 tracing/immediates : 26 tracing/markers : 7 tracing/nmisafe : 5 tracing/sched_markers : 1 tracing/textedit : 5 x86/amd-iommu : 16 x86/audit-speedup : 66 x86/cleanups : 2 x86/gart : 3 x86/header-guards : 2 x86/mm-debug : 2 x86/paravirt-spinlocks : 70 x86/pci-ioapic-boot-irq-quirks : 9 x86/pebs : 3 x86/unify-mce : 9 x86/unify-pci : 4 x86/x2apic : 35 xen-64bit : 63 --------------------- auto-core-next : 15 auto-cpus4096-next : 13 auto-kmemcheck-next : 20 auto-safe-poison-pointers-next : 1 auto-stackprotector-next : 18 auto-timers-next : 3 auto-x86-next : 104 --------------------- auto-latest : 215 --------------------- total topics: 129 pending topics: 34 pending commits: 453 unique commits: 376 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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