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2633777946
This commit implements CPU hotplug support for the Marvell Armada XP platform. The CPU hotplug stub functions from hotplug.c are moved into platsmp.c, as it doesn't make much sense to have a separate file just for these two functions. In addition, this commit: * Implements the ->cpu_die() function of SMP operations by calling armada_370_xp_pmsu_idle_enter() to enter the deep idle state for CPUs going offline. * Implements a dummy ->cpu_kill() function, simply needed for the kernel to know we have CPU hotplug support. * The armada_xp_boot_secondary() function makes sure to wake up the CPU if waiting in deep idle state by sending an IPI. This is because armada_xp_boot_secondary() is now used in two different situations: for the initial boot of secondary CPUs (where CPU reset deassert is used to wake up CPUs) and for CPU hotplug (where an IPI is used to take CPU out of deep idle). * At boot time, we exit from the idle state in the ->smp_secondary_init() hook. This commit has been tested using CPU hotplug through sysfs (/sys/devices/system/cpu/cpuX/online) and using kexec. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1401481098-23326-5-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net> |
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| .. | ||
| include/mach | ||
| armada-370-xp.h | ||
| board-v7.c | ||
| board.h | ||
| coherency_ll.S | ||
| coherency.c | ||
| coherency.h | ||
| common.h | ||
| cpu-reset.c | ||
| dove.c | ||
| headsmp-a9.S | ||
| headsmp.S | ||
| Kconfig | ||
| kirkwood-pm.c | ||
| kirkwood-pm.h | ||
| kirkwood.c | ||
| kirkwood.h | ||
| Makefile | ||
| mvebu-soc-id.c | ||
| mvebu-soc-id.h | ||
| netxbig.c | ||
| platsmp-a9.c | ||
| platsmp.c | ||
| pmsu.c | ||
| pmsu.h | ||
| system-controller.c | ||