- 08 Apr, 2013 32 commits
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Thomas Gleixner authored
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Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by:
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: Magnus Damm <magnus.damm@gmail.com> Acked-by:
Chris Metcalf <cmetcalf@tilera.com> Link: http://lkml.kernel.org/r/20130321215235.348460344@linutronix.deSigned-off-by:
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Thomas Gleixner authored
cpu_idle() needs to be called with preemption disabled. Signed-off-by:
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Thomas Gleixner authored
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Thomas Gleixner authored
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Thomas Gleixner authored
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Heiko Carstens <heiko.carstens@de.ibm.com> Link: http://lkml.kernel.org/r/20130321215235.090816526@linutronix.deSigned-off-by:
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Thomas Gleixner authored
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Thomas Gleixner authored
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Thomas Gleixner authored
Idle poller with an extra check_pgt_cache() invocation. Use the core code. Signed-off-by:
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Thomas Gleixner authored
default_idle() boils down to safe_halt() and the other option is idle polling. Use the core functionality. Signed-off-by:
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Thomas Gleixner authored
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Thomas Gleixner authored
The microblaze idle loop provides a polling and a non polling version, which are suprisingly both polling, just with slightly different instrumentation. Remove them and use the generic poller. Signed-off-by:
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Thomas Gleixner authored
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Thomas Gleixner authored
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Thomas Gleixner authored
Replace the private poller. Signed-off-by:
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Thomas Gleixner authored
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Thomas Gleixner authored
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Richard Kuo <rkuo@codeaurora.org> Link: http://lkml.kernel.org/r/20130321215234.338692935@linutronix.deSigned-off-by:
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Thomas Gleixner authored
Use the core idle poll function instead of the private one Signed-off-by:
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Thomas Gleixner authored
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Thomas Gleixner authored
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Jesper Nilsson <jesper.nilsson@axis.com> Link: http://lkml.kernel.org/r/20130321215234.148829489@linutronix.deSigned-off-by:
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Thomas Gleixner authored
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Thomas Gleixner authored
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Thomas Gleixner authored
Also replace the idle poll enforcement by the generic functionality. Signed-off-by:
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Thomas Gleixner authored
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Catalin Marinas <catalin.marinas@arm.com> Link: http://lkml.kernel.org/r/20130321215233.887563095@linutronix.de
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Thomas Gleixner authored
Use the generic idle loop and replace enable/disable_hlt with the respective core functions. Signed-off-by:
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Thomas Gleixner authored
The core provides a generic idle poll loop. Signed-off-by:
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Thomas Gleixner authored
The generic idle loop implements all functionality. Aside of that it allows arc to implement the tsk_is_polling() functionality correctly, despite the patently (now gone) comment in the original arc cpu_idle() function: /* Since we SLEEP in idle loop, TIF_POLLING_NRFLAG can't be set */ See kernel/cpu/idle.c Signed-off-by:
Vineet Gupta <vgupta@synopsys.com> Tested-by:
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Thomas Gleixner authored
All idle functions in arch/* are more or less the same, plus minus a few bugs and extra instrumentation, tickless support and other optional items. Implement a generic idle function which resembles the functionality found in arch/. Provide weak arch_cpu_idle_* functions which can be overridden by the architecture code if needed. Signed-off-by:
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Thomas Gleixner authored
For now this calls cpu_idle(), but in the long run we want to move the cpu bringup code to the core and therefor we add a state argument. Signed-off-by:
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Thomas Gleixner authored
Implement set/clear functions for the idle need_resched poll implementation. Signed-off-by:
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Thomas Gleixner authored
Move it to a common place. Preparatory patch for implementing set/clear for the idle need_resched poll implementation. Signed-off-by:
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Thomas Gleixner authored
enable/disable_hlt() does not need to be exported and can be killed on architectures which do not use it at all. Signed-off-by:
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Linus Torvalds authored
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- 07 Apr, 2013 7 commits
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM fix from Gleb Natapov: "Bugfix for the regression introduced by commit c300aa64" * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: Allow cross page reads and writes from cached translations.
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Peter Anvin: "Two quite small fixes: one a build problem, and the other fixes seccomp filters on x32." * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Fix rebuild with EFI_STUB enabled x86: remove the x32 syscall bitmask from syscall_get_nr()
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Will Deacon authored
Interrupt handlers are always invoked with interrupts disabled, so remove all uses of the deprecated IRQF_DISABLED flag. Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Reviewed-by:
Matt Turner <mattst88@gmail.com> Signed-off-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
Michael Cree <mcree@orcon.net.nz> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Will Deacon authored
Linux has expected that interrupt handlers are executed with local interrupts disabled for a while now, so ensure that this is the case on Alpha even for non-device interrupts such as IPIs. Without this patch, secondary boot results in the following backtrace: warning: at kernel/softirq.c:139 __local_bh_enable+0xb8/0xd0() trace: __local_bh_enable+0xb8/0xd0 irq_enter+0x74/0xa0 scheduler_ipi+0x50/0x100 handle_ipi+0x84/0x260 do_entint+0x1ac/0x2e0 irq_exit+0x60/0xa0 handle_irq+0x98/0x100 do_entint+0x2c8/0x2e0 ret_from_sys_call+0x0/0x10 load_balance+0x3e4/0x870 cpu_idle+0x24/0x80 rcu_eqs_enter_common.isra.38+0x0/0x120 cpu_idle+0x40/0x80 rest_init+0xc0/0xe0 _stext+0x1c/0x20 A similar dump occurs if you try to reboot using magic-sysrq. Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Reviewed-by: -
Will Deacon authored
Due to all of the goodness being packed into today's kernels, the resulting image isn't as slim as it once was. In light of this, don't pass -msmall-data to gcc, which otherwise results in link failures due to impossible relocations when compiling anything but the most trivial configurations. Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Reviewed-by:
Thorsten Kranzkowski <dl8bcu@dl8bcu.de> Signed-off-by:
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Jay Estabrook authored
Fixes a NULL pointer dereference at boot on UP1500. Cc: stable@vger.kernel.org Reviewed-and-Tested-by:
Jay Estabrook <jay.estabrook@gmail.com> Signed-off-by:
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Andrew Honig authored
This patch adds support for kvm_gfn_to_hva_cache_init functions for reads and writes that will cross a page. If the range falls within the same memslot, then this will be a fast operation. If the range is split between two memslots, then the slower kvm_read_guest and kvm_write_guest are used. Tested: Test against kvm_clock unit tests. Signed-off-by:
Andrew Honig <ahonig@google.com> Signed-off-by:
Gleb Natapov <gleb@redhat.com>
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- 06 Apr, 2013 1 commit
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git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dmLinus Torvalds authored
Pull device-mapper fixes from Alasdair Kergon: "A pair of patches to fix the writethrough mode of the device-mapper cache target when the device being cached is not itself wrapped with device-mapper." * tag 'dm-3.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm: dm cache: reduce bio front_pad size in writeback mode dm cache: fix writes to cache device in writethrough mode
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