1. 25 5月, 2008 1 次提交
  2. 13 5月, 2008 3 次提交
  3. 29 4月, 2008 1 次提交
  4. 26 4月, 2008 1 次提交
  5. 17 4月, 2008 1 次提交
  6. 30 1月, 2008 2 次提交
  7. 18 10月, 2007 2 次提交
    • J
      x86: also show non-zero IRQ counts for vectors that currently don't have a handler · 072f5d82
      Jan Beulich 提交于
      It doesn't seem to make sense to hide these, even if their counts
      can't change at the point in time they're being displayed.
      
      [ tglx: arch/x86 adaptation ]
      Signed-off-by: NJan Beulich <jbeulich@novell.com>
      Signed-off-by: NAndi Kleen <ak@suse.de>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      072f5d82
    • J
      x86: expand /proc/interrupts to include missing vectors, v2 · 38e760a1
      Joe Korty 提交于
      Add missing IRQs and IRQ descriptions to /proc/interrupts.
      
      /proc/interrupts is most useful when it displays every IRQ vector in use by
      the system, not just those somebody thought would be interesting.
      
      This patch inserts the following vector displays to the i386 and x86_64
      platforms, as appropriate:
      
      	rescheduling interrupts
      	TLB flush interrupts
      	function call interrupts
      	thermal event interrupts
      	threshold interrupts
      	spurious interrupts
      
      A threshold interrupt occurs when ECC memory correction is occuring at too
      high a frequency.  Thresholds are used by the ECC hardware as occasional
      ECC failures are part of normal operation, but long sequences of ECC
      failures usually indicate a memory chip that is about to fail.
      
      Thermal event interrupts occur when a temperature threshold has been
      exceeded for some CPU chip.  IIRC, a thermal interrupt is also generated
      when the temperature drops back to a normal level.
      
      A spurious interrupt is an interrupt that was raised then lowered by the
      device before it could be fully processed by the APIC.  Hence the apic sees
      the interrupt but does not know what device it came from.  For this case
      the APIC hardware will assume a vector of 0xff.
      
      Rescheduling, call, and TLB flush interrupts are sent from one CPU to
      another per the needs of the OS.  Typically, their statistics would be used
      to discover if an interrupt flood of the given type has been occuring.
      
      AK: merged v2 and v4 which had some more tweaks
      AK: replace Local interrupts with Local timer interrupts
      AK: Fixed description of interrupt types.
      
      [ tglx: arch/x86 adaptation ]
      [ mingo: small cleanup ]
      Signed-off-by: NJoe Korty <joe.korty@ccur.com>
      Signed-off-by: NAndi Kleen <ak@suse.de>
      Cc: Tim Hockin <thockin@hockin.org>
      Cc: Andi Kleen <ak@suse.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      38e760a1
  8. 14 10月, 2007 1 次提交
    • D
      Delete filenames in comments. · 835c34a1
      Dave Jones 提交于
      Since the x86 merge, lots of files that referenced their own filenames
      are no longer correct.  Rather than keep them up to date, just delete
      them, as they add no real value.
      
      Additionally:
      - fix up comment formatting in scx200_32.c
      - Remove a credit from myself in setup_64.c from a time when we had no SCM
      - remove longwinded history from tsc_32.c which can be figured out from
        git.
      Signed-off-by: NDave Jones <davej@redhat.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      835c34a1
  9. 11 10月, 2007 3 次提交
  10. 22 7月, 2007 1 次提交
  11. 20 7月, 2007 1 次提交
  12. 03 5月, 2007 1 次提交
    • J
      [PATCH] i386: Convert PDA into the percpu section · 7c3576d2
      Jeremy Fitzhardinge 提交于
      Currently x86 (similar to x84-64) has a special per-cpu structure
      called "i386_pda" which can be easily and efficiently referenced via
      the %fs register.  An ELF section is more flexible than a structure,
      allowing any piece of code to use this area.  Indeed, such a section
      already exists: the per-cpu area.
      
      So this patch:
      (1) Removes the PDA and uses per-cpu variables for each current member.
      (2) Replaces the __KERNEL_PDA segment with __KERNEL_PERCPU.
      (3) Creates a per-cpu mirror of __per_cpu_offset called this_cpu_off, which
          can be used to calculate addresses for this CPU's variables.
      (4) Simplifies startup, because %fs doesn't need to be loaded with a
          special segment at early boot; it can be deferred until the first
          percpu area is allocated (or never for UP).
      
      The result is less code and one less x86-specific concept.
      Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
      Signed-off-by: NJeremy Fitzhardinge <jeremy@xensource.com>
      Signed-off-by: NAndi Kleen <ak@suse.de>
      Cc: Andi Kleen <ak@suse.de>
      7c3576d2
  13. 27 2月, 2007 1 次提交
    • L
      Revert "[PATCH] i386: add idle notifier" · ea3d5226
      Linus Torvalds 提交于
      This reverts commit 2ff2d3d7.
      
      Uwe Bugla reports that he cannot mount a floppy drive any more, and Jiri
      Slaby bisected it down to this commit.
      
      Benjamin LaHaise also points out that this is a big hot-path, and that
      interrupt delivery while idle is very common and should not go through
      all these expensive gyrations.
      
      Fix up conflicts in arch/i386/kernel/apic.c and arch/i386/kernel/irq.c
      due to other unrelated irq changes.
      
      Cc: Stephane Eranian <eranian@hpl.hp.com>
      Cc: Andi Kleen <ak@suse.de>
      Cc: Andrew Morton <akpm@osdl.org>
      Cc: Uwe Bugla <uwe.bugla@gmx.de>
      Cc: Jiri Slaby <jirislaby@gmail.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      ea3d5226
  14. 17 2月, 2007 1 次提交
  15. 13 2月, 2007 1 次提交
    • S
      [PATCH] i386: add idle notifier · 2ff2d3d7
      Stephane Eranian 提交于
      Add a notifier mechanism to the low level idle loop.  You can register a
      callback function which gets invoked on entry and exit from the low level idle
      loop.  The low level idle loop is defined as the polling loop, low-power call,
      or the mwait instruction.  Interrupts processed by the idle thread are not
      considered part of the low level loop.
      
      The notifier can be used to measure precisely how much is spent in useless
      execution (or low power mode).  The perfmon subsystem uses it to turn on/off
      monitoring.
      Signed-off-by: Nstephane eranian <eranian@hpl.hp.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NAndi Kleen <ak@suse.de>
      2ff2d3d7
  16. 17 10月, 2006 1 次提交
  17. 05 10月, 2006 1 次提交
    • D
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      David Howells 提交于
      Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
      of passing regs around manually through all ~1800 interrupt handlers in the
      Linux kernel.
      
      The regs pointer is used in few places, but it potentially costs both stack
      space and code to pass it around.  On the FRV arch, removing the regs parameter
      from all the genirq function results in a 20% speed up of the IRQ exit path
      (ie: from leaving timer_interrupt() to leaving do_IRQ()).
      
      Where appropriate, an arch may override the generic storage facility and do
      something different with the variable.  On FRV, for instance, the address is
      maintained in GR28 at all times inside the kernel as part of general exception
      handling.
      
      Having looked over the code, it appears that the parameter may be handed down
      through up to twenty or so layers of functions.  Consider a USB character
      device attached to a USB hub, attached to a USB controller that posts its
      interrupts through a cascaded auxiliary interrupt controller.  A character
      device driver may want to pass regs to the sysrq handler through the input
      layer which adds another few layers of parameter passing.
      
      I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
      main part of the code on FRV and i386, though I can't test most of the drivers.
      I've also done partial conversion for powerpc and MIPS - these at least compile
      with minimal configurations.
      
      This will affect all archs.  Mostly the changes should be relatively easy.
      Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
      
      	struct pt_regs *old_regs = set_irq_regs(regs);
      
      And put the old one back at the end:
      
      	set_irq_regs(old_regs);
      
      Don't pass regs through to generic_handle_irq() or __do_IRQ().
      
      In timer_interrupt(), this sort of change will be necessary:
      
      	-	update_process_times(user_mode(regs));
      	-	profile_tick(CPU_PROFILING, regs);
      	+	update_process_times(user_mode(get_irq_regs()));
      	+	profile_tick(CPU_PROFILING);
      
      I'd like to move update_process_times()'s use of get_irq_regs() into itself,
      except that i386, alone of the archs, uses something other than user_mode().
      
      Some notes on the interrupt handling in the drivers:
      
       (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
           the input_dev struct.
      
       (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
           something different depending on whether it's been supplied with a regs
           pointer or not.
      
       (*) Various IRQ handler function pointers have been moved to type
           irq_handler_t.
      Signed-Off-By: NDavid Howells <dhowells@redhat.com>
      (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
      7d12e780
  18. 04 10月, 2006 1 次提交
  19. 31 8月, 2006 1 次提交
  20. 04 7月, 2006 1 次提交
  21. 30 6月, 2006 3 次提交
    • I
      [PATCH] genirq MSI fixes · dae86204
      Ingo Molnar 提交于
      This is a fixed up and cleaned up replacement for genirq-msi-fixes.patch,
      which should solve the i386 4KSTACKS problem.  I also added Ben's idea of
      pushing the __do_IRQ() check into generic_handle_irq().
      
      I booted this with MSI enabled, but i only have MSI devices, not MSI-X
      devices.  I'd still expect MSI-X to work now.
      
      irqchip migration helper: call __do_IRQ() if a descriptor is attached to an
      irqtype-style controller.  This also fixes MSI-X IRQ handling on i386 and
      x86_64.
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Roland Dreier <rolandd@cisco.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      dae86204
    • I
      [PATCH] genirq: cleanup: merge irq_affinity[] into irq_desc[] · a53da52f
      Ingo Molnar 提交于
      Consolidation: remove the irq_affinity[NR_IRQS] array and move it into the
      irq_desc[NR_IRQS].affinity field.
      
      [akpm@osdl.org: sparc64 build fix]
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      a53da52f
    • I
      [PATCH] genirq: rename desc->handler to desc->chip · d1bef4ed
      Ingo Molnar 提交于
      This patch-queue improves the generic IRQ layer to be truly generic, by adding
      various abstractions and features to it, without impacting existing
      functionality.
      
      While the queue can be best described as "fix and improve everything in the
      generic IRQ layer that we could think of", and thus it consists of many
      smaller features and lots of cleanups, the one feature that stands out most is
      the new 'irq chip' abstraction.
      
      The irq-chip abstraction is about describing and coding and IRQ controller
      driver by mapping its raw hardware capabilities [and quirks, if needed] in a
      straightforward way, without having to think about "IRQ flow"
      (level/edge/etc.) type of details.
      
      This stands in contrast with the current 'irq-type' model of genirq
      architectures, which 'mixes' raw hardware capabilities with 'flow' details.
      The patchset supports both types of irq controller designs at once, and
      converts i386 and x86_64 to the new irq-chip design.
      
      As a bonus side-effect of the irq-chip approach, chained interrupt controllers
      (master/slave PIC constructs, etc.) are now supported by design as well.
      
      The end result of this patchset intends to be simpler architecture-level code
      and more consolidation between architectures.
      
      We reused many bits of code and many concepts from Russell King's ARM IRQ
      layer, the merging of which was one of the motivations for this patchset.
      
      This patch:
      
      rename desc->handler to desc->chip.
      
      Originally i did not want to do this, because it's a big patch.  But having
      both "desc->handler", "desc->handle_irq" and "action->handler" caused a
      large degree of confusion and made the code appear alot less clean than it
      truly is.
      
      I have also attempted a dual approach as well by introducing a
      desc->chip alias - but that just wasnt robust enough and broke
      frequently.
      
      So lets get over with this quickly.  The conversion was done automatically
      via scripts and converts all the code in the kernel.
      
      This renaming patch is the first one amongst the patches, so that the
      remaining patches can stay flexible and can be merged and split up
      without having some big monolithic patch act as a merge barrier.
      
      [akpm@osdl.org: build fix]
      [akpm@osdl.org: another build fix]
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      d1bef4ed
  22. 29 6月, 2006 1 次提交
    • A
      [PATCH] x86: do_IRQ(): check irq number · a052b68b
      Andrew Morton 提交于
      We recently changed x86 to handle more than 256 IRQs.  Add a check in do_IRQ()
      just to make sure that nothing went wrong with that implementation.
      
      [chrisw@sous-sol.org: do x86_64 too]
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Andi Kleen <ak@muc.de>
      Cc: Chris Wright <chrisw@sous-sol.org>
      Cc: "Protasevich, Natalie" <Natalie.Protasevich@UNISYS.com>
      Cc: <Christian.Limpach@cl.cam.ac.uk>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      a052b68b
  23. 28 6月, 2006 2 次提交
  24. 27 6月, 2006 1 次提交
  25. 26 6月, 2006 1 次提交
  26. 23 6月, 2006 1 次提交
  27. 09 1月, 2006 1 次提交
  28. 31 10月, 2005 1 次提交
  29. 26 6月, 2005 2 次提交
    • L
      [PATCH] cpu state clean after hot remove · e1367daf
      Li Shaohua 提交于
      Clean CPU states in order to reuse smp boot code for CPU hotplug.
      
      Signed-off-by: Li Shaohua<shaohua.li@intel.com>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      e1367daf
    • Z
      [PATCH] i386 CPU hotplug · f3705136
      Zwane Mwaikambo 提交于
      (The i386 CPU hotplug patch provides infrastructure for some work which Pavel
      is doing as well as for ACPI S3 (suspend-to-RAM) work which Li Shaohua
      <shaohua.li@intel.com> is doing)
      
      The following provides i386 architecture support for safely unregistering and
      registering processors during runtime, updated for the current -mm tree.  In
      order to avoid dumping cpu hotplug code into kernel/irq/* i dropped the
      cpu_online check in do_IRQ() by modifying fixup_irqs().  The difference being
      that on cpu offline, fixup_irqs() is called before we clear the cpu from
      cpu_online_map and a long delay in order to ensure that we never have any
      queued external interrupts on the APICs.  There are additional changes to s390
      and ppc64 to account for this change.
      
      1) Add CONFIG_HOTPLUG_CPU
      2) disable local APIC timer on dead cpus.
      3) Disable preempt around irq balancing to prevent CPUs going down.
      4) Print irq stats for all possible cpus.
      5) Debugging check for interrupts on offline cpus.
      6) Hacky fixup_irqs() to redirect irqs when cpus go off/online.
      7) play_dead() for offline cpus to spin inside.
      8) Handle offline cpus set in flush_tlb_others().
      9) Grab lock earlier in smp_call_function() to prevent CPUs going down.
      10) Implement __cpu_disable() and __cpu_die().
      11) Enable local interrupts in cpu_enable() after fixup_irqs()
      12) Don't fiddle with NMI on dead cpu, but leave intact on other cpus.
      13) Program IRQ affinity whilst cpu is still in cpu_online_map on offline.
      Signed-off-by: NZwane Mwaikambo <zwane@linuxpower.ca>
      Signed-off-by: NAndrew Morton <akpm@osdl.org>
      Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
      f3705136
  30. 17 4月, 2005 1 次提交
    • L
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds 提交于
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4