target/linux/lantiq/patches-3.0/0010-MIPS-enable-oprofile-support-on-lantiq-targets.patch

   1 From cc4b9cdff8665a414ae51101d3a0ca6ed7444a27 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Wed, 24 Aug 2011 13:28:55 +0200
   4 Subject: [PATCH 10/24] MIPS: enable oprofile support on lantiq targets
   5
   6 This patch sets the performance counters irq and HAVE_OPROFILE flag.
   7
   8 Signed-off-by: John Crispin <blogic@openwrt.org>
   9 Cc: linux-mips@linux-mips.org
  10 ---
  11  arch/mips/Kconfig      |    1 +
  12  arch/mips/lantiq/irq.c |    5 +++++
  13  2 files changed, 6 insertions(+), 0 deletions(-)
  14
  15 diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
  16 index b122adc..0cf5bbd 100644
  17 --- a/arch/mips/Kconfig
  18 +++ b/arch/mips/Kconfig
  19 @@ -230,6 +230,7 @@ config LANTIQ
  20         select SWAP_IO_SPACE
  21         select BOOT_RAW
  22         select HAVE_CLK
  23 +       select HAVE_OPROFILE
  24         select MIPS_MACHINE
  25
  26  config LASAT
  27 diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c
  28 index 17c057f..0b2ed87 100644
  29 --- a/arch/mips/lantiq/irq.c
  30 +++ b/arch/mips/lantiq/irq.c
  31 @@ -40,6 +40,9 @@
  32
  33  #define MAX_EIU                        6
  34
  35 +/* the performance counter */
  36 +#define LTQ_PERF_IRQ           (INT_NUM_IM4_IRL0 + 31)
  37 +
  38  /* irqs generated by device attached to the EBU need to be acked in
  39   * a special manner
  40   */
  41 @@ -318,6 +321,8 @@ void __init arch_init_irq(void)
  42         set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ0 | IE_IRQ1 |
  43                 IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
  44  #endif
  45 +
  46 +       cp0_perfcount_irq = LTQ_PERF_IRQ;
  47  }
  48
  49  unsigned int __cpuinit get_c0_compare_int(void)
  50 --
  51 1.7.5.4
  52