target/linux/lantiq/patches-3.2/0018-MIPS-lantiq-enable-oprofile-support-on-lantiq-target.patch

   1 From e0bd3f1b16fbce1f0f7900a0dd624f9dc8a47f78 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 18/70] MIPS: lantiq: enable oprofile support on lantiq
   5  targets
   6
   7 This patch sets the performance counters irq and HAVE_OPROFILE flag for Lantiq
   8 SoCs.
   9
  10 Signed-off-by: John Crispin <blogic@openwrt.org>
  11 ---
  12  arch/mips/Kconfig      |    1 +
  13  arch/mips/lantiq/irq.c |    5 +++++
  14  2 files changed, 6 insertions(+), 0 deletions(-)
  15
  16 --- a/arch/mips/Kconfig
  17 +++ b/arch/mips/Kconfig
  18 @@ -226,6 +226,7 @@ config LANTIQ
  19         select SWAP_IO_SPACE
  20         select BOOT_RAW
  21         select HAVE_CLK
  22 +       select HAVE_OPROFILE
  23         select MIPS_MACHINE
  24
  25  config LASAT
  26 --- a/arch/mips/lantiq/irq.c
  27 +++ b/arch/mips/lantiq/irq.c
  28 @@ -40,6 +40,9 @@
  29
  30  #define MAX_EIU                        6
  31
  32 +/* the performance counter */
  33 +#define LTQ_PERF_IRQ           (INT_NUM_IM4_IRL0 + 31)
  34 +
  35  /* irqs generated by device attached to the EBU need to be acked in
  36   * a special manner
  37   */
  38 @@ -318,6 +321,8 @@ void __init arch_init_irq(void)
  39         set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ0 | IE_IRQ1 |
  40                 IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
  41  #endif
  42 +
  43 +       cp0_perfcount_irq = LTQ_PERF_IRQ;
  44  }
  45
  46  unsigned int __cpuinit get_c0_compare_int(void)