1. 22 9月, 2016 2 次提交
    • G
      x86/acpi: Set persistent cpuid <-> nodeid mapping when booting · dc6db24d
      Gu Zheng 提交于
      The whole patch-set aims at making cpuid <-> nodeid mapping persistent. So that,
      when node online/offline happens, cache based on cpuid <-> nodeid mapping such as
      wq_numa_possible_cpumask will not cause any problem.
      It contains 4 steps:
      1. Enable apic registeration flow to handle both enabled and disabled cpus.
      2. Introduce a new array storing all possible cpuid <-> apicid mapping.
      3. Enable _MAT and MADT relative apis to return non-present or disabled cpus' apicid.
      4. Establish all possible cpuid <-> nodeid mapping.
      
      This patch finishes step 4.
      
      This patch set the persistent cpuid <-> nodeid mapping for all enabled/disabled
      processors at boot time via an additional acpi namespace walk for processors.
      
      [ tglx: Remove the unneeded exports ]
      Signed-off-by: NGu Zheng <guz.fnst@cn.fujitsu.com>
      Signed-off-by: NTang Chen <tangchen@cn.fujitsu.com>
      Signed-off-by: NZhu Guihua <zhugh.fnst@cn.fujitsu.com>
      Signed-off-by: NDou Liyang <douly.fnst@cn.fujitsu.com>
      Acked-by: NIngo Molnar <mingo@kernel.org>
      Cc: mika.j.penttila@gmail.com
      Cc: len.brown@intel.com
      Cc: rafael@kernel.org
      Cc: rjw@rjwysocki.net
      Cc: yasu.isimatu@gmail.com
      Cc: linux-mm@kvack.org
      Cc: linux-acpi@vger.kernel.org
      Cc: isimatu.yasuaki@jp.fujitsu.com
      Cc: gongzhaogang@inspur.com
      Cc: tj@kernel.org
      Cc: izumi.taku@jp.fujitsu.com
      Cc: cl@linux.com
      Cc: chen.tang@easystack.cn
      Cc: akpm@linux-foundation.org
      Cc: kamezawa.hiroyu@jp.fujitsu.com
      Cc: lenb@kernel.org
      Link: http://lkml.kernel.org/r/1472114120-3281-6-git-send-email-douly.fnst@cn.fujitsu.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      dc6db24d
    • G
      x86/acpi: Enable MADT APIs to return disabled apicids · 8ad893fa
      Gu Zheng 提交于
      The whole patch-set aims at making cpuid <-> nodeid mapping persistent. So that,
      when node online/offline happens, cache based on cpuid <-> nodeid mapping such as
      wq_numa_possible_cpumask will not cause any problem.
      It contains 4 steps:
      1. Enable apic registeration flow to handle both enabled and disabled cpus.
      2. Introduce a new array storing all possible cpuid <-> apicid mapping.
      3. Enable _MAT and MADT relative apis to return non-present or disabled cpus' apicid.
      4. Establish all possible cpuid <-> nodeid mapping.
      
      This patch finishes step 3.
      
      There are four mappings in the kernel:
      1. nodeid (logical node id)   <->   pxm        (persistent)
      2. apicid (physical cpu id)   <->   nodeid     (persistent)
      3. cpuid (logical cpu id)     <->   apicid     (not persistent, now persistent by step 2)
      4. cpuid (logical cpu id)     <->   nodeid     (not persistent)
      
      So, in order to setup persistent cpuid <-> nodeid mapping for all possible CPUs,
      we should:
      1. Setup cpuid <-> apicid mapping for all possible CPUs, which has been done in step 1, 2.
      2. Setup cpuid <-> nodeid mapping for all possible CPUs. But before that, we should
         obtain all apicids from MADT.
      
      All processors' apicids can be obtained by _MAT method or from MADT in ACPI.
      The current code ignores disabled processors and returns -ENODEV.
      
      After this patch, a new parameter will be added to MADT APIs so that caller
      is able to control if disabled processors are ignored.
      Signed-off-by: NGu Zheng <guz.fnst@cn.fujitsu.com>
      Signed-off-by: NTang Chen <tangchen@cn.fujitsu.com>
      Signed-off-by: NZhu Guihua <zhugh.fnst@cn.fujitsu.com>
      Signed-off-by: NDou Liyang <douly.fnst@cn.fujitsu.com>
      Acked-by: NIngo Molnar <mingo@kernel.org>
      Cc: mika.j.penttila@gmail.com
      Cc: len.brown@intel.com
      Cc: rafael@kernel.org
      Cc: rjw@rjwysocki.net
      Cc: yasu.isimatu@gmail.com
      Cc: linux-mm@kvack.org
      Cc: linux-acpi@vger.kernel.org
      Cc: isimatu.yasuaki@jp.fujitsu.com
      Cc: gongzhaogang@inspur.com
      Cc: tj@kernel.org
      Cc: izumi.taku@jp.fujitsu.com
      Cc: cl@linux.com
      Cc: chen.tang@easystack.cn
      Cc: akpm@linux-foundation.org
      Cc: kamezawa.hiroyu@jp.fujitsu.com
      Cc: lenb@kernel.org
      Link: http://lkml.kernel.org/r/1472114120-3281-5-git-send-email-douly.fnst@cn.fujitsu.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      8ad893fa
  2. 30 5月, 2016 1 次提交
  3. 14 5月, 2015 2 次提交
  4. 26 3月, 2015 2 次提交
  5. 05 2月, 2015 1 次提交
  6. 06 1月, 2015 1 次提交
    • H
      ACPI / processor: Convert apic_id to phys_id to make it arch agnostic · af8f3f51
      Hanjun Guo 提交于
      apic_id in MADT table is the CPU hardware id which identify
      it self in the system for x86 and ia64, OSPM will use it for
      SMP init to map APIC ID to logical cpu number in the early
      boot, when the DSDT/SSDT (ACPI namespace) is scanned later, the
      ACPI processor driver is probed and the driver will use acpi_id
      in DSDT to get the apic_id, then map to the logical cpu number
      which is needed by the processor driver.
      
      Before ACPI 5.0, only x86 and ia64 were supported in ACPI spec,
      so apic_id is used both in arch code and ACPI core which is
      pretty fine. Since ACPI 5.0, ARM is supported by ACPI and
      APIC is not available on ARM, this will confuse people when
      apic_id is both used by x86 and ARM in one function.
      
      So convert apic_id to phys_id (which is the original meaning)
      in ACPI processor dirver to make it arch agnostic, but leave the
      arch dependent code unchanged, no functional change.
      Signed-off-by: NHanjun Guo <hanjun.guo@linaro.org>
      Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
      af8f3f51
  7. 16 12月, 2014 1 次提交
  8. 25 9月, 2014 1 次提交
  9. 30 7月, 2014 1 次提交
  10. 21 7月, 2014 1 次提交
  11. 26 3月, 2014 1 次提交
  12. 19 3月, 2014 1 次提交
  13. 19 2月, 2014 4 次提交
  14. 28 1月, 2014 1 次提交
  15. 07 12月, 2013 1 次提交
    • L
      ACPI: Clean up inclusions of ACPI header files · 8b48463f
      Lv Zheng 提交于
      Replace direct inclusions of <acpi/acpi.h>, <acpi/acpi_bus.h> and
      <acpi/acpi_drivers.h>, which are incorrect, with <linux/acpi.h>
      inclusions and remove some inclusions of those files that aren't
      necessary.
      
      First of all, <acpi/acpi.h>, <acpi/acpi_bus.h> and <acpi/acpi_drivers.h>
      should not be included directly from any files that are built for
      CONFIG_ACPI unset, because that generally leads to build warnings about
      undefined symbols in !CONFIG_ACPI builds.  For CONFIG_ACPI set,
      <linux/acpi.h> includes those files and for CONFIG_ACPI unset it
      provides stub ACPI symbols to be used in that case.
      
      Second, there are ordering dependencies between those files that always
      have to be met.  Namely, it is required that <acpi/acpi_bus.h> be included
      prior to <acpi/acpi_drivers.h> so that the acpi_pci_root declarations the
      latter depends on are always there.  And <acpi/acpi.h> which provides
      basic ACPICA type declarations should always be included prior to any other
      ACPI headers in CONFIG_ACPI builds.  That also is taken care of including
      <linux/acpi.h> as appropriate.
      Signed-off-by: NLv Zheng <lv.zheng@intel.com>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Matthew Garrett <mjg59@srcf.ucam.org>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Acked-by: Bjorn Helgaas <bhelgaas@google.com> (drivers/pci stuff)
      Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> (Xen stuff)
      Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
      8b48463f
  16. 24 9月, 2013 1 次提交
  17. 08 8月, 2013 1 次提交
  18. 15 7月, 2013 1 次提交
    • P
      acpi: delete __cpuinit usage from all acpi files · fe7bf106
      Paul Gortmaker 提交于
      The __cpuinit type of throwaway sections might have made sense
      some time ago when RAM was more constrained, but now the savings
      do not offset the cost and complications.  For example, the fix in
      commit 5e427ec2 ("x86: Fix bit corruption at CPU resume time")
      is a good example of the nasty type of bugs that can be created
      with improper use of the various __init prefixes.
      
      After a discussion on LKML[1] it was decided that cpuinit should go
      the way of devinit and be phased out.  Once all the users are gone,
      we can then finally remove the macros themselves from linux/init.h.
      
      This removes all the drivers/acpi uses of the __cpuinit macros
      from all C files.
      
      [1] https://lkml.org/lkml/2013/5/20/589
      
      Cc: Len Brown <lenb@kernel.org>
      Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
      Cc: linux-acpi@vger.kernel.org
      Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
      fe7bf106
  19. 04 3月, 2013 1 次提交
  20. 13 7月, 2012 1 次提交
    • T
      cpufreq / ACPI: Fix not loading acpi-cpufreq driver regression · c4686c71
      Thomas Renninger 提交于
      Commit d640113f introduced a regression on SMP
      systems where the processor core with ACPI id zero is disabled
      (typically should be the case because of hyperthreading).
      The regression got spread through stable kernels.
      On 3.0.X it got introduced via 3.0.18.
      
      Such platforms may be rare, but do exist.
      Look out for a disabled processor with acpi_id 0 in dmesg:
      ACPI: LAPIC (acpi_id[0x00] lapic_id[0x10] disabled)
      
      This problem has been observed on a:
      HP Proliant BL280c G6 blade
      
      This patch restricts the introduced workaround to platforms
      with nr_cpu_ids <= 1.
      Signed-off-by: NThomas Renninger <trenn@suse.de>
      CC: stable@vger.kernel.org
      Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
      c4686c71
  21. 17 1月, 2012 1 次提交
    • L
      ACPI: processor: fix acpi_get_cpuid for UP processor · d640113f
      Lin Ming 提交于
      For UP processor, it is likely that no _MAT method or MADT table defined.
      So currently acpi_get_cpuid(...) always return -1 for UP processor.
      This is wrong. It should return valid value for CPU0.
      
      In the other hand, BIOS may define multiple CPU handles even for UP
      processor, for example
      
              Scope (_PR)
              {
                  Processor (CPU0, 0x00, 0x00000410, 0x06) {}
                  Processor (CPU1, 0x01, 0x00000410, 0x06) {}
                  Processor (CPU2, 0x02, 0x00000410, 0x06) {}
                  Processor (CPU3, 0x03, 0x00000410, 0x06) {}
              }
      
      We should only return valid value for CPU0's acpi handle.
      And return invalid value for others.
      
      http://marc.info/?t=132329819900003&r=1&w=2
      
      Cc: stable@vger.kernel.org
      Reported-and-tested-by: wallak@free.fr
      Signed-off-by: NLin Ming <ming.m.lin@intel.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      d640113f
  22. 01 11月, 2011 1 次提交
  23. 29 5月, 2011 1 次提交
  24. 03 3月, 2011 2 次提交
  25. 13 1月, 2011 1 次提交
    • T
      ACPI, intel_idle: Cleanup idle= internal variables · d1896049
      Thomas Renninger 提交于
      Having four variables for the same thing:
        idle_halt, idle_nomwait, force_mwait and boot_option_idle_overrides
      is rather confusing and unnecessary complex.
      
      if idle= boot param is passed, only set up one variable:
      boot_option_idle_overrides
      
      Introduces following functional changes/fixes:
        - intel_idle driver does not register if any idle=xy
          boot param is passed.
        - processor_idle.c will also not register a cpuidle driver
          and get active if idle=halt is passed.
          Before a cpuidle driver with one (C1, halt) state got registered
          Now the default_idle function will be used which finally uses
          the same idle call to enter sleep state (safe_halt()), but
          without registering a whole cpuidle driver.
      
      That means idle= param will always avoid cpuidle drivers to register
      with one exception (same behavior as before):
      idle=nomwait
      may still register acpi_idle cpuidle driver, but C1 will not use
      mwait, but hlt. This can be a workaround for IO based deeper sleep
      states where C1 mwait causes problems.
      Signed-off-by: NThomas Renninger <trenn@suse.de>
      cc: x86@kernel.org
      Signed-off-by: NLen Brown <len.brown@intel.com>
      d1896049
  26. 01 10月, 2010 1 次提交
    • Y
      ACPI: Handle ACPI0007 Device in acpi_early_set_pdc · c1e0ddbf
      Yinghai Lu 提交于
      After
      | commit d8191fa4
      | Author: Alex Chiang <achiang@hp.com>
      | Date:   Mon Feb 22 12:11:39 2010 -0700
      |
      |    ACPI: processor: driver doesn't need to evaluate _PDC
      |
      |    Now that the early _PDC evaluation path knows how to correctly
      |    evaluate _PDC on only physically present processors, there's no
      |    need for the processor driver to evaluate it later when it loads.
      |
      |    To cover the hotplug case, push _PDC evaluation down into the
      |    hotplug paths.
      
      only cpu with Processor Statement get processed with _PDC
      
      If bios is using Device object instead of Processor statement.
      SSDTs for Pstate/Cstate/Tstate can not be loaded dynamically.
      
      Need to try to scan ACPI0007 in addition to Processor.
      
      That commit is between 2.6.34-rc1 and 2.6.34-rc2, so stable tree for 2.6.34+
      need this patch.
      Signed-off-by: NYinghai Lu <yinghai@kernel.org>
      Reviewed-by: NBjorn Helgaas <bjorn.helgaas@hp.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      c1e0ddbf
  27. 29 9月, 2010 1 次提交
  28. 13 7月, 2010 1 次提交
  29. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  30. 15 3月, 2010 4 次提交