From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave.Martin@arm.com (Dave Martin) Date: Mon, 30 Sep 2013 16:06:44 +0100 Subject: [RFC PATCH 0/3] MCPM/TC2 support for CPU powerdown synchronisation Message-ID: <1380553607-3271-1-git-send-email-Dave.Martin@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This series adds MCPM support for detecting when a CPU is safely powered down, and provides an implementation for TC2. This is sufficient to for working kexec with real power management on TC2. To test it, you'll also need: * CONFIG_KEXEC=y * CONFIG_PROC_DEVICE_TREE=y * CONFIG_MCPM=y * CONFIG_ARCH_VEXPRESS_TC2_PM=y * sufficiently new kexec-tools (git://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git v2.0.4 worked for me) To prevent CPUs from running off into the weeds across kexec, this series requires Lorenzo's patch http://lists.infradead.org/pipermail/linux-arm-kernel/2013-September/200917.html (arm: vexpress: tc2: fix hotplug/idle/kexec race on cluster power down). Dave Martin (3): ARM: mcpm: Factor out logical-to-physical CPU translation ARM: mcpm: Implement cpu_kill() to synchronise on powerdown ARM: vexpress/TC2: Implement MCPM power_down_finish() arch/arm/common/mcpm_entry.c | 5 ++++ arch/arm/common/mcpm_platsmp.c | 27 +++++++++++++++--- arch/arm/include/asm/mcpm.h | 31 ++++++++++++++++++++ arch/arm/mach-vexpress/spc.c | 39 +++++++++++++++++++++++++ arch/arm/mach-vexpress/spc.h | 1 + arch/arm/mach-vexpress/tc2_pm.c | 60 +++++++++++++++++++++++++++++++++++---- 6 files changed, 154 insertions(+), 9 deletions(-) -- 1.7.9.5