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Date: Thu, 21 Mar 2013 21:52:56 -0000 From: Thomas Gleixner <tglx@...utronix.de> To: LKML <linux-kernel@...r.kernel.org> Cc: linux-arch@...r.kernel.org, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, Rusty Russell <rusty@...tcorp.com.au>, Paul McKenney <paulmck@...ux.vnet.ibm.com>, Ingo Molnar <mingo@...e.hu>, Peter Zijlstra <peterz@...radead.org>, "Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>, Magnus Damm <magnus.damm@...il.com> Subject: [patch 00/34] idle: Consolidate idle implementations Each architecture implements its own cpu_idle() code, which is more or less the same on all architectures (plus/minus a few bugs and a few missing extra functionalities, instrumentation ...). That also forces everyone who is interested in idle related features to add new functionality to every architecture. What a waste. Aside of that pointless code duplicaiton the ongoing quest to consolidate the cpu hotplug code needs a common entry point for the non boot cpus. The following series implements a generic idle function and converts most architectures over. I left out SPARC (it involves sparc asm) and UM (it made me barf). If we can move those architectures as well, we can get rid of the extra config switch and have everything consolidated. I spent a lot of time to make sure that the conversion preserved the non obvious differences of the architecture implementations, but I really need help from the affected maintainers to prove the correctness. Thanks, tglx --- arch/openrisc/kernel/idle.c | 73 ------------ linux-2.6/arch/Kconfig | 3 linux-2.6/arch/alpha/Kconfig | 1 linux-2.6/arch/alpha/include/asm/thread_info.h | 2 linux-2.6/arch/alpha/kernel/process.c | 19 --- linux-2.6/arch/alpha/kernel/smp.c | 3 linux-2.6/arch/arc/Kconfig | 1 linux-2.6/arch/arc/kernel/process.c | 27 ---- linux-2.6/arch/arc/kernel/smp.c | 2 linux-2.6/arch/arm/Kconfig | 2 linux-2.6/arch/arm/include/asm/system_misc.h | 3 linux-2.6/arch/arm/kernel/process.c | 100 ++++------------- linux-2.6/arch/arm/kernel/smp.c | 2 linux-2.6/arch/arm/mach-gemini/idle.c | 4 linux-2.6/arch/arm/mach-gemini/irq.c | 2 linux-2.6/arch/arm/mach-ixp4xx/common.c | 2 linux-2.6/arch/arm/mach-omap1/pm.c | 5 linux-2.6/arch/arm/mach-omap2/omap_hwmod.c | 6 - linux-2.6/arch/arm/mach-omap2/pm.c | 5 linux-2.6/arch/arm/mach-orion5x/board-dt.c | 2 linux-2.6/arch/arm/mach-orion5x/common.c | 2 linux-2.6/arch/arm/mach-shark/core.c | 2 linux-2.6/arch/arm/mach-shmobile/suspend.c | 4 linux-2.6/arch/arm/mach-w90x900/dev.c | 2 linux-2.6/arch/arm64/Kconfig | 1 linux-2.6/arch/arm64/kernel/process.c | 43 ------- linux-2.6/arch/arm64/kernel/smp.c | 2 linux-2.6/arch/avr32/Kconfig | 1 linux-2.6/arch/avr32/kernel/process.c | 13 -- linux-2.6/arch/avr32/kernel/time.c | 8 + linux-2.6/arch/avr32/mach-at32ap/include/mach/pm.h | 24 ---- linux-2.6/arch/avr32/mach-at32ap/pm-at32ap700x.S | 7 - linux-2.6/arch/blackfin/Kconfig | 1 linux-2.6/arch/blackfin/kernel/process.c | 30 ----- linux-2.6/arch/blackfin/mach-common/smp.c | 2 linux-2.6/arch/c6x/Kconfig | 1 linux-2.6/arch/c6x/kernel/process.c | 28 ---- linux-2.6/arch/cris/Kconfig | 1 linux-2.6/arch/cris/arch-v10/kernel/process.c | 3 linux-2.6/arch/cris/arch-v32/kernel/process.c | 12 -- linux-2.6/arch/cris/arch-v32/kernel/smp.c | 4 linux-2.6/arch/cris/include/asm/processor.h | 7 - linux-2.6/arch/cris/kernel/process.c | 49 -------- linux-2.6/arch/frv/Kconfig | 1 linux-2.6/arch/frv/kernel/process.c | 27 ---- linux-2.6/arch/h8300/Kconfig | 1 linux-2.6/arch/h8300/kernel/process.c | 35 ------ linux-2.6/arch/hexagon/Kconfig | 1 linux-2.6/arch/hexagon/kernel/process.c | 23 ---- linux-2.6/arch/hexagon/kernel/smp.c | 2 linux-2.6/arch/ia64/Kconfig | 1 linux-2.6/arch/ia64/include/asm/thread_info.h | 2 linux-2.6/arch/ia64/kernel/perfmon.c | 13 -- linux-2.6/arch/ia64/kernel/process.c | 83 ++------------ linux-2.6/arch/ia64/kernel/smpboot.c | 2 linux-2.6/arch/m32r/Kconfig | 1 linux-2.6/arch/m32r/kernel/process.c | 18 --- linux-2.6/arch/m32r/kernel/smpboot.c | 2 linux-2.6/arch/m68k/Kconfig | 1 linux-2.6/arch/m68k/kernel/process.c | 32 ----- linux-2.6/arch/metag/Kconfig | 1 linux-2.6/arch/metag/include/asm/thread_info.h | 2 linux-2.6/arch/metag/kernel/process.c | 32 ----- linux-2.6/arch/metag/kernel/smp.c | 2 linux-2.6/arch/microblaze/Kconfig | 2 linux-2.6/arch/microblaze/include/asm/processor.h | 5 linux-2.6/arch/microblaze/include/asm/thread_info.h | 1 linux-2.6/arch/microblaze/kernel/process.c | 65 ----------- linux-2.6/arch/mips/Kconfig | 1 linux-2.6/arch/mips/kernel/process.c | 46 ++------ linux-2.6/arch/mips/kernel/smp.c | 2 linux-2.6/arch/mn10300/Kconfig | 1 linux-2.6/arch/mn10300/include/asm/thread_info.h | 2 linux-2.6/arch/mn10300/kernel/process.c | 70 +----------- linux-2.6/arch/mn10300/kernel/smp.c | 7 - linux-2.6/arch/openrisc/Kconfig | 1 linux-2.6/arch/openrisc/include/asm/thread_info.h | 2 linux-2.6/arch/parisc/Kconfig | 1 linux-2.6/arch/parisc/include/asm/thread_info.h | 2 linux-2.6/arch/parisc/kernel/process.c | 22 --- linux-2.6/arch/parisc/kernel/smp.c | 2 linux-2.6/arch/powerpc/Kconfig | 1 linux-2.6/arch/powerpc/include/asm/thread_info.h | 4 linux-2.6/arch/powerpc/kernel/idle.c | 78 +++---------- linux-2.6/arch/powerpc/kernel/smp.c | 2 linux-2.6/arch/s390/kernel/process.c | 25 +--- linux-2.6/arch/s390/kernel/smp.c | 3 linux-2.6/arch/score/Kconfig | 1 linux-2.6/arch/score/kernel/process.c | 18 --- linux-2.6/arch/sh/Kconfig | 2 linux-2.6/arch/sh/include/asm/thread_info.h | 4 linux-2.6/arch/sh/kernel/idle.c | 102 +---------------- linux-2.6/arch/sh/kernel/smp.c | 2 linux-2.6/arch/sparc/include/asm/thread_info_32.h | 2 linux-2.6/arch/sparc/include/asm/thread_info_64.h | 2 linux-2.6/arch/tile/include/asm/thread_info.h | 2 linux-2.6/arch/tile/kernel/process.c | 61 +--------- linux-2.6/arch/tile/kernel/smpboot.c | 4 linux-2.6/arch/unicore32/Kconfig | 1 linux-2.6/arch/unicore32/kernel/process.c | 21 --- linux-2.6/arch/x86/Kconfig | 1 linux-2.6/arch/x86/include/asm/thread_info.h | 2 linux-2.6/arch/x86/kernel/process.c | 106 +++++------------- linux-2.6/arch/x86/kernel/smpboot.c | 2 linux-2.6/arch/x86/xen/smp.c | 2 linux-2.6/arch/xtensa/Kconfig | 1 linux-2.6/arch/xtensa/kernel/process.c | 14 -- linux-2.6/include/linux/cpu.h | 16 ++ linux-2.6/include/linux/sched.h | 41 +++++++ linux-2.6/init/main.c | 2 linux-2.6/kernel/Makefile | 1 linux-2.6/kernel/cpu/Makefile | 1 linux-2.6/kernel/cpu/idle.c | 115 ++++++++++++++++++++ linux-2.6/kernel/sched/core.c | 5 114 files changed, 432 insertions(+), 1237 deletions(-) -- 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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