20 Sep, 2016
9 commits
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Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.
Since the online target runs always on the target CPU we can drop
smp_call_function_single(). The functions is invoked with interrupts off to
keep the old calling convention. If the maintainer things that this function
can be called with interrupts enabled then it can be removed :)Signed-off-by: Sebastian Andrzej Siewior
Cc: Robert Richter
Cc: Peter Zijlstra
Cc: oprofile-list@lists.sf.net
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-10-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: Jens Axboe
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-9-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: Jens Axboe
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-8-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
CPU_UP_CANCELED_FROZEN() is not preserved: It is only there to free memory in an
error case because it is assumed if the CPU does show up on resume it won't be
seen ever again. As per Borislav:
|IOW, you don't need mc_cpu_dead().Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: Borislav Petkov
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160907164523.46a2xnffha4bv63g@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: linux-sh@vger.kernel.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-6-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.Signed-off-by: Sebastian Andrzej Siewior
Cc: Fenghua Yu
Cc: Tony Luck
Cc: linux-ia64@vger.kernel.org
Cc: Peter Zijlstra
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160906170457.32393-5-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Acked-by: Tony Lindgren
Cc: Peter Zijlstra
Cc: rt@linutronix.de
Cc: linux-omap@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20160906170457.32393-4-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine so the old notifier based
cpuhotplug infrastructure can be removed.Signed-off-by: Sebastian Andrzej Siewior
Cc: linux-sh@vger.kernel.org
Cc: Peter Zijlstra
Cc: Magnus Damm
Cc: Simon Horman
Cc: rt@linutronix.de
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20160906170457.32393-3-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Acked-by: Will Deacon
Cc: Peter Zijlstra
Cc: Catalin Marinas
Cc: rt@linutronix.de
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20160906170457.32393-2-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner
07 Sep, 2016
16 commits
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Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: rt@linutronix.de
Cc: Michael Ellerman
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20160818125731.27256-17-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
I assume here that the powermac has two CPUs and so only one can go up
or down at a time. The variable smp_core99_host_open is here to ensure
that we do not try to open or close the i2c host twice if something goes
wrong and we invoke the prepare or online callback twice due to
rollback.Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: rt@linutronix.de
Cc: Michael Ellerman
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20160818125731.27256-16-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine. The online & down callbacks are
invoked on the target CPU so we can avoid using smp_call_function_single().
local_irq_disable() is used because smp_call_function_single() used to invoke
the function with interrupts disabled.Signed-off-by: Sebastian Andrzej Siewior
Reviewed-by: Paolo Bonzini
Cc: kvm@vger.kernel.org
Cc: Peter Zijlstra
Cc: Gleb Natapov
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160818125731.27256-15-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.Signed-off-by: Sebastian Andrzej Siewior
Cc: James Hogan
Cc: Peter Zijlstra
Cc: Ralf Baechle
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160818125731.27256-14-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Cc: linux-pm@vger.kernel.org
Cc: Peter Zijlstra
Cc: Daniel Lezcano
Cc: "Rafael J. Wysocki"
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160824091444.brdr5zpbxjvh6n3f@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
v1…v2: - Use only CPUHP_CPUIDLE_DEAD (requested by Daniel Lezcano)
Signed-off-by: Sebastian Andrzej Siewior
Cc: linux-pm@vger.kernel.org
Cc: Peter Zijlstra
Cc: Daniel Lezcano
Cc: "Rafael J. Wysocki"
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160824091259.ozyslcopxvbfdqzy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Cc: linux-pm@vger.kernel.org
Cc: Peter Zijlstra
Cc: Daniel Lezcano
Cc: "Rafael J. Wysocki"
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160818125731.27256-11-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: Neil Brown
Cc: linux-raid@vger.kernel.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160818125731.27256-10-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.Signed-off-by: Sebastian Andrzej Siewior
Cc: Thomas Petazzoni
Cc: Peter Zijlstra
Cc: netdev@vger.kernel.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160818125731.27256-9-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160818125731.27256-7-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: Jens Axboe
Cc: linux-mm@kvack.org
Cc: rt@linutronix.de
Cc: Tejun Heo
Link: http://lkml.kernel.org/r/20160818125731.27256-6-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Sebastian Andrzej Siewior
Cc: Andrew Morton
Cc: Peter Zijlstra
Cc: Pekka Enberg
Cc: linux-mm@kvack.org
Cc: rt@linutronix.de
Cc: David Rientjes
Cc: Christoph Lameter
Cc: Joonsoo Kim
Link: http://lkml.kernel.org/r/20160818125731.27256-5-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
Signed-off-by: Richard Weinberger
Signed-off-by: Thomas Gleixner
Signed-off-by: Sebastian Andrzej Siewior
Reviewed-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: Pekka Enberg
Cc: linux-mm@kvack.org
Cc: rt@linutronix.de
Cc: David Rientjes
Cc: Joonsoo Kim
Cc: Andrew Morton
Cc: Christoph Lameter
Link: http://lkml.kernel.org/r/20160823125319.abeapfjapf2kfezp@linutronix.de
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine. They are installed at run time but
relay_prepare_cpu() does not need to be invoked by the boot CPU because
relay_open() was not yet invoked and there are no pools that need to be created.Signed-off-by: Richard Weinberger
Signed-off-by: Thomas Gleixner
Signed-off-by: Sebastian Andrzej Siewior
Reviewed-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: rt@linutronix.de
Cc: Andrew Morton
Link: http://lkml.kernel.org/r/20160818125731.27256-3-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
relay essentially needs to maintain a per CPU array of channel buffer
pointers but it manually creates that array. Instead its better to use
the per CPU constructs, provided by the kernel, to allocate & access the
array of pointer to channel buffers.Signed-off-by: Akash Goel
Reviewed-by: Chris Wilson
Link: http://lkml.kernel.org/r/1470909140-25919-1-git-send-email-akash.goel@intel.com
Signed-off-by: Andrew Morton
Signed-off-by: Thomas Gleixner -
All users are converted to state machine, remove CPU_STARTING and the
corresponding CPU_DYING.Signed-off-by: Thomas Gleixner
Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160818125731.27256-2-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner
06 Sep, 2016
1 commit
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We should have all names in the scheme "[subsys/]facility:state]". Fix the
core to comply.Signed-off-by: Thomas Gleixner
05 Sep, 2016
1 commit
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Some compilers are unhappy with the anon union in the state array. Replace
it with a named union.While at it align the state array initializers proper and add the missing
name tags.Fixes: cf392d10b69e "cpu/hotplug: Add multi instance support"
Reported-by: Ingo Molnar
Reported-by: Fenguang Wu
Signed-off-by: Thomas Gleixner
Cc: rt@linutronix.de
03 Sep, 2016
7 commits
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When cpu_hotplug_enable() is called unbalanced w/o a preceeding
cpu_hotplug_disable() the code emits a warning, but happily decrements the
disabled counter. This causes the next operations to malfunction.Prevent the decrement and just emit a warning.
Signed-off-by: Lianwei Wang
Cc: peterz@infradead.org
Cc: linux-pm@vger.kernel.org
Cc: oleg@redhat.com
Link: http://lkml.kernel.org/r/1465541008-12476-1-git-send-email-lianwei.wang@gmail.com
Signed-off-by: Thomas Gleixner -
Install the callbacks via the state machine.
The driver supports multiple instances and therefore the new
cpuhp_state_add_instance_nocalls() infrastrucure is used. The driver
currently uses get_online_cpus() to avoid missing a CPU hotplug event while
invoking virtnet_set_affinity(). This could be avoided by using
cpuhp_state_add_instance() variant which holds the hotplug lock and invokes
callback during registration. This is more or less a 1:1 conversion of the
current code.Signed-off-by: Sebastian Andrzej Siewior
Cc: Mark Rutland
Cc: "Michael S. Tsirkin"
Cc: Peter Zijlstra
Cc: netdev@vger.kernel.org
Cc: Will Deacon
Cc: virtualization@lists.linux-foundation.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/1471024183-12666-7-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Signed-off-by: Sebastian Andrzej Siewior
Cc: Mark Rutland
Cc: Pawel Moll
Cc: Arnd Bergmann
Cc: Suzuki K Poulose
Cc: Peter Zijlstra
Cc: Will Deacon
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/1471024183-12666-6-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Signed-off-by: Sebastian Andrzej Siewior
Cc: Mark Rutland
Cc: Suzuki K Poulose
Cc: Peter Zijlstra
Cc: Will Deacon
Cc: rt@linutronix.de
Cc: Olof Johansson
Link: http://lkml.kernel.org/r/1471024183-12666-5-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
Signed-off-by: Sebastian Andrzej Siewior
Cc: Peter Zijlstra
Cc: Mark Rutland
Cc: Will Deacon
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160817171420.sdwk2qivxunzryz4@linutronix.de
Signed-off-by: Thomas Gleixner -
This patch adds the ability for a given state to have multiple
instances. Until now all states have a single instance and the startup /
teardown callback use global variables.
A few drivers need to perform a the same callbacks on multiple
"instances". Currently we have three drivers in tree which all have a
global list which they iterate over. With multi instance they support
don't need their private list and the functionality has been moved into
core code. Plus we hold the hotplug lock in core so no cpus comes/goes
while instances are registered and we do rollback in error case :)Signed-off-by: Thomas Gleixner
Signed-off-by: Sebastian Andrzej Siewior
Cc: Mark Rutland
Cc: Peter Zijlstra
Cc: Will Deacon
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/1471024183-12666-3-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner -
This is preparation for the following patch.
This rework here changes the arguments of cpuhp_invoke_callback(). It
passes now `state' and whether `startup' or `teardown' callback should
be invoked. The callback then is looked up by the function.The following is a clanup of callers:
- cpuhp_issue_call() has one argument less
- struct cpuhp_cpu_state (which is used by the hotplug thread) gets also
its callback removed. The decision if it is a single callback
invocation moved to the `single' variable. Also a `bringup' variable
has been added to distinguish between startup and teardown callback.
- take_cpu_down() needs to start one step earlier. We always get here
via CPUHP_TEARDOWN_CPU callback. Before that change cpuhp_ap_states +
CPUHP_TEARDOWN_CPU pointed to an empty entry because TEARDOWN is saved
in bp_states for this reason. Now that we use cpuhp_get_step() to
lookup the state we must explicitly skip it in order not to invoke it
twice.Signed-off-by: Thomas Gleixner
Signed-off-by: Sebastian Andrzej Siewior
Cc: Mark Rutland
Cc: Peter Zijlstra
Cc: Will Deacon
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/1471024183-12666-2-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner
02 Sep, 2016
1 commit
-
Apply upstream changes to avoid conflicts with pending patches.
29 Aug, 2016
5 commits
-
Pull drm fixes from Dave Airlie:
"A bunch of fixes covering i915, amdgpu, one tegra and some core DRM
ones. Nothing too strange at this point"* tag 'drm-fixes-for-4.8-rc4' of git://people.freedesktop.org/~airlied/linux: (21 commits)
drm/atomic: Don't potentially reset color_mgmt_changed on successive property updates.
drm: Protect fb_defio in drivers with CONFIG_KMS_FBDEV_EMULATION
drm/amdgpu: skip TV/CV in display parsing
drm/amdgpu: avoid a possible array overflow
drm/amdgpu: fix lru size grouping v2
drm/tegra: dsi: Enhance runtime power management
drm/i915: Fix botched merge that downgrades CSR versions.
drm/i915/skl: Ensure pipes with changed wms get added to the state
drm/i915/gen9: Only copy WM results for changed pipes to skl_hw
drm/i915/skl: Add support for the SAGV, fix underrun hangs
drm/i915/gen6+: Interpret mailbox error flags
drm/i915: Reattach comment, complete type specification
drm/i915: Unconditionally flush any chipset buffers before execbuf
drm/i915/gen9: Drop invalid WARN() during data rate calculation
drm/i915/gen9: Initialize intel_state->active_crtcs during WM sanitization (v2)
drm: Reject page_flip for !DRIVER_MODESET
drm/amdgpu: fix timeout value check in amd_sched_job_recovery
drm/amdgpu: fix sdma_v2_4_ring_test_ib
drm/amdgpu: fix amdgpu_move_blit on 32bit systems
drm/radeon: fix radeon_move_blit on 32bit systems
... -
Due to assigning the 'replaced' value instead of or'ing it,
if drm_atomic_crtc_set_property() gets called multiple times,
the last call will define the color_mgmt_changed flag, so
a non-updating call to a property can reset the flag and
prevent actual hw state updates required by preceding
property updates.Signed-off-by: Mario Kleiner
Cc: Daniel Vetter
Cc: # v4.6+
Reviewed-by: Daniel Vetter
Signed-off-by: Dave Airlie -
Pull perf fixes from Thomas Gleixner:
"A few fixes from the perf departement- prevent a imbalanced preemption disable in the events teardown code
- prevent out of bound acces in perf userspace
- make perf tools compile with UCLIBC again
- a fix for the userspace unwinder utility"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Use this_cpu_ptr() when stopping AUX events
perf evsel: Do not access outside hw cache name arrays
tools lib: Reinstate strlcpy() header guard with __UCLIBC__
perf unwind: Use addr_location::addr instead of ip for entries -
Pull x86 fix from Thomas Gleixner:
"A single bugfix to prevent irq remapping when the ioapic is disabled"* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/apic: Do not init irq remapping if ioapic is disabled
