1. 06 Feb, 2007 2 commits
    • Ralf Baechle's avatar
      418451c1
    • Atsushi Nemoto's avatar
      [MIPS] Define MIPS_CPU_IRQ_BASE in generic header · 97dcb82d
      Atsushi Nemoto authored
      
      The irq_base for {mips,rm7k,rm9k}_cpu_irq_init() are constant on all
      platforms and are same value on most platforms (0 or 16, depends on
      CONFIG_I8259).  Define them in asm-mips/mach-generic/irq.h and make
      them customizable.  This will save a few cycle on each CPU interrupt.
      
      A good side effect is removing some dependencies to MALTA in generic
      SMTC code.
      
      Although MIPS_CPU_IRQ_BASE is customizable, this patch changes irq
      mappings on DDB5477, EMMA2RH and MIPS_SIM, since really customizing
      them might cause some header dependency problem and there seems no
      good reason to customize it.  So currently only VR41XX is using custom
      MIPS_CPU_IRQ_BASE value, which is 0 regardless of CONFIG_I8259.
      
      Testing this patch on those platforms is greatly appreciated.  Thank
      you.
      Signed-off-by: default avatarAtsushi Nemoto <anemo@mba.ocn.ne.jp>
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      97dcb82d
  2. 24 Jan, 2007 2 commits
  3. 23 Jan, 2007 1 commit
    • Ralf Baechle's avatar
      [MIPS] SMTC: Instant IPI replay. · ac8be955
      Ralf Baechle authored
      
      SMTC pseudo-interrupts between TCs are deferred and queued if the target
      TC is interrupt-inhibited (IXMT). In the first SMTC prototypes, these
      queued IPIs were serviced on return to user mode, or on entry into the
      kernel idle loop. The INSTANT_REPLAY option dispatches them as part of
      local_irq_restore() processing, which adds runtime overhead (hence the
      option to turn it off), but ensures that IPIs are handled promptly even
      under heavy I/O interrupt load.
      Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
      ac8be955
  4. 18 Jan, 2007 1 commit
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  10. 27 Jun, 2006 1 commit
  11. 18 Apr, 2006 1 commit