[PATCH v2 0/4] Unify CPU hotplug lock interface
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STALE4783d
REVIEWED
From: Toshi Kani <hidden>
Date: 2013-08-30 00:24:04
Also in:
linux-acpi, lkml
Subsystem:
cpu hotplug, driver core, kobjects, debugfs and sysfs, linux for powerpc (32-bit and 64-bit), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Thomas Gleixner, Peter Zijlstra, Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Johan Hovold, Madhavan Srinivasan, Linus Torvalds, Ingo Molnar, Borislav Petkov, Dave Hansen
Status: Reviewed.
Revision v2 (2 revisions archived).
Revisions (2)
- v1
- v2 current [diff against previous]
lock_device_hotplug() was recently introduced to serialize CPU & Memory online/offline and hotplug operations, along with sysfs online interface restructure (commit 4f3549d7). With this new locking scheme, cpu_hotplug_driver_lock() is redundant and is no longer necessary. This patchset makes sure that lock_device_hotplug() covers all CPU online/ offline interfaces, and then removes cpu_hotplug_driver_lock(). v2: - Rebased to the pm tree, bleeding-edge. - Changed patch 2/4 to use lock_device_hotplug_sysfs(). --- Toshi Kani (4): hotplug, x86: Fix online state in cpu0 debug interface hotplug, x86: Add hotplug lock to missing places hotplug, x86: Disable ARCH_CPU_PROBE_RELEASE on x86 hotplug, powerpc, x86: Remove cpu_hotplug_driver_lock() --- arch/powerpc/kernel/smp.c | 12 ---------- arch/powerpc/platforms/pseries/dlpar.c | 40 +++++++++++++--------------------- arch/x86/Kconfig | 4 ---- arch/x86/kernel/smpboot.c | 21 ------------------ arch/x86/kernel/topology.c | 11 ++++++---- drivers/base/cpu.c | 34 +++++++++++++++++++---------- include/linux/cpu.h | 13 ----------- 7 files changed, 45 insertions(+), 90 deletions(-)