1. 11 Jan, 2006 3 commits
  2. 14 Nov, 2005 1 commit
    • James Cleverdon's avatar
      [PATCH] i386/x86-64: Share interrupt vectors when there is a large number of interrupt sources · 6004e1b7
      James Cleverdon authored
      
      
      Here's a patch that builds on Natalie Protasevich's IRQ compression
      patch and tries to work for MPS boots as well as ACPI.  It is meant for
      a 4-node IBM x460 NUMA box, which was dying because it had interrupt
      pins with GSI numbers > NR_IRQS and thus overflowed irq_desc.
      
      The problem is that this system has 270 GSIs (which are 1:1 mapped with
      I/O APIC RTEs) and an 8-node box would have 540.  This is much bigger
      than NR_IRQS (224 for both i386 and x86_64).  Also, there aren't enough
      vectors to go around.  There are about 190 usable vectors, not counting
      the reserved ones and the unused vectors at 0x20 to 0x2F.  So, my patch
      attempts to compress the GSI range and share vectors by sharing IRQs.
      
      Cc: "Protasevich, Natalie" <Natalie.Protasevich@unisys.com>
      Signed-off-by: default avatarAndi Kleen <ak@suse.de>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      6004e1b7
  3. 14 Sep, 2005 1 commit
  4. 12 Sep, 2005 3 commits
  5. 09 Sep, 2005 1 commit
  6. 07 Sep, 2005 2 commits
  7. 24 Aug, 2005 1 commit
  8. 30 Jun, 2005 1 commit
  9. 25 Jun, 2005 1 commit
  10. 31 May, 2005 1 commit
  11. 20 May, 2005 1 commit
  12. 17 May, 2005 1 commit
  13. 01 May, 2005 1 commit
    • Jack F Vogel's avatar
      [PATCH] check nmi watchdog is broken · 67701ae9
      Jack F Vogel authored
      
      
      A bug against an xSeries system showed up recently noting that the
      check_nmi_watchdog() test was failing.
      
      I have been investigating it and discovered in both i386 and x86_64 the
      recent change to the routine to use the cpu_callin_map has uncovered a
      problem.  Prior to that change, on an SMP box, the test was trivally
      passing because all cpu's were found to not yet be online, but now with the
      callin_map they are discovered, it goes on to test the counter and they
      have not yet begun to increment, so it announces a CPU is stuck and bails
      out.
      
      On all the systems I have access to test, the announcement of failure is
      also bougs...  by the time you can login and check /proc/interrupts, the
      NMI count is happily incrementing on all CPUs.  Its just that the test is
      being done too early.
      
      I have tried moving the call to the test around a bit, and it was always
      too early.  I finally hit on this proposed solution, it delays the routine
      via a late_initcall(), seems like the right solution to me.
      Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
      Cc: Andi Kleen <ak@muc.de>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      67701ae9
  14. 16 Apr, 2005 2 commits