target/linux/linux-2.4/patches/brcm/007-sched_use_tsc.patch

   1 diff -urN linux.old/arch/mips/kernel/time.c linux.dev/arch/mips/kernel/time.c
   2 --- linux.old/arch/mips/kernel/time.c   2005-11-14 11:06:38.661262000 +0100
   3 +++ linux.dev/arch/mips/kernel/time.c   2005-11-14 11:10:42.856523250 +0100
   4 @@ -151,6 +151,16 @@
   5  unsigned int (*mips_hpt_read)(void);
   6  void (*mips_hpt_init)(unsigned int);
   7
   8 +extern __u32 get_htscl(void)
   9 +{
  10 +       return timerhi;
  11 +}
  12 +
  13 +extern __u64 get_tscll(void)
  14 +{
  15 +       __u32 c = read_c0_count();
  16 +       return ((((__u64) timerhi) + (c < timerlo)) << 32) | ((__u64) ((__u32) c));
  17 +}
  18
  19  /*
  20   * timeofday services, for syscalls.
  21 @@ -761,3 +771,5 @@
  22  EXPORT_SYMBOL(to_tm);
  23  EXPORT_SYMBOL(rtc_set_time);
  24  EXPORT_SYMBOL(rtc_get_time);
  25 +EXPORT_SYMBOL(get_htscl);
  26 +EXPORT_SYMBOL(get_tscll);
  27 diff -urN linux.old/include/asm-mips/timex.h linux.dev/include/asm-mips/timex.h
  28 --- linux.old/include/asm-mips/timex.h  2005-11-14 11:06:38.685263500 +0100
  29 +++ linux.dev/include/asm-mips/timex.h  2005-11-14 11:02:21.069163500 +0100
  30 @@ -31,6 +31,19 @@
  31         return read_c0_count();
  32  }
  33
  34 +extern __u32 get_htscl(void);
  35 +extern __u64 get_tscll(void);
  36 +
  37 +#define rdtsc(low, high) \
  38 +               high = get_htscl(); \
  39 +               low = read_c0_count();
  40 +
  41 +#define rdtscl(low) \
  42 +               low = read_c0_count();
  43 +
  44 +#define rdtscll(val) \
  45 +               val = get_tscll();
  46 +
  47  #define vxtime_lock()          do {} while (0)
  48  #define vxtime_unlock()                do {} while (0)
  49
  50 diff -urN linux.old/include/net/pkt_sched.h linux.dev/include/net/pkt_sched.h
  51 --- linux.old/include/net/pkt_sched.h   2005-11-14 11:06:38.709265000 +0100
  52 +++ linux.dev/include/net/pkt_sched.h   2005-11-14 11:02:21.069163500 +0100
  53 @@ -5,7 +5,11 @@
  54  #define PSCHED_JIFFIES                 2
  55  #define PSCHED_CPU             3
  56
  57 +#ifdef __mips__
  58 +#define PSCHED_CLOCK_SOURCE    PSCHED_CPU
  59 +#else
  60  #define PSCHED_CLOCK_SOURCE    PSCHED_JIFFIES
  61 +#endif
  62
  63  #include <linux/config.h>
  64  #include <linux/types.h>
  65 @@ -271,7 +275,7 @@
  66  #define PSCHED_US2JIFFIE(delay) (((delay)+psched_clock_per_hz-1)/psched_clock_per_hz)
  67  #define PSCHED_JIFFIE2US(delay) ((delay)*psched_clock_per_hz)
  68
  69 -#ifdef CONFIG_X86_TSC
  70 +#if defined(CONFIG_X86_TSC) || defined(__mips__)
  71
  72  #define PSCHED_GET_TIME(stamp) \
  73  ({ u64 __cur; \