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 diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
  17 index d46f1da..c1ceadb 100644
  18 --- a/arch/mips/Kconfig
  19 +++ b/arch/mips/Kconfig
  20 @@ -226,6 +226,7 @@ config LANTIQ
  21         select SWAP_IO_SPACE
  22         select BOOT_RAW
  23         select HAVE_CLK
  24 +       select HAVE_OPROFILE
  25         select MIPS_MACHINE
  26
  27  config LASAT
  28 diff --git a/arch/mips/lantiq/irq.c b/arch/mips/lantiq/irq.c
  29 index 17c057f..0b2ed87 100644
  30 --- a/arch/mips/lantiq/irq.c
  31 +++ b/arch/mips/lantiq/irq.c
  32 @@ -40,6 +40,9 @@
  33
  34  #define MAX_EIU                        6
  35
  36 +/* the performance counter */
  37 +#define LTQ_PERF_IRQ           (INT_NUM_IM4_IRL0 + 31)
  38 +
  39  /* irqs generated by device attached to the EBU need to be acked in
  40   * a special manner
  41   */
  42 @@ -318,6 +321,8 @@ void __init arch_init_irq(void)
  43         set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ0 | IE_IRQ1 |
  44                 IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
  45  #endif
  46 +
  47 +       cp0_perfcount_irq = LTQ_PERF_IRQ;
  48  }
  49
  50  unsigned int __cpuinit get_c0_compare_int(void)
  51 --
  52 1.7.7.1
  53