target/linux/lantiq/patches/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 --- a/arch/mips/Kconfig
  16 +++ b/arch/mips/Kconfig
  17 @@ -230,6 +230,7 @@ config LANTIQ
  18         select SWAP_IO_SPACE
  19         select BOOT_RAW
  20         select HAVE_CLK
  21 +       select HAVE_OPROFILE
  22         select MIPS_MACHINE
  23
  24  config LASAT
  25 --- a/arch/mips/lantiq/irq.c
  26 +++ b/arch/mips/lantiq/irq.c
  27 @@ -40,6 +40,9 @@
  28
  29  #define MAX_EIU                        6
  30
  31 +/* the performance counter */
  32 +#define LTQ_PERF_IRQ           (INT_NUM_IM4_IRL0 + 31)
  33 +
  34  /* irqs generated by device attached to the EBU need to be acked in
  35   * a special manner
  36   */
  37 @@ -318,6 +321,8 @@ void __init arch_init_irq(void)
  38         set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ0 | IE_IRQ1 |
  39                 IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
  40  #endif
  41 +
  42 +       cp0_perfcount_irq = LTQ_PERF_IRQ;
  43  }
  44
  45  unsigned int __cpuinit get_c0_compare_int(void)