openwrt/target/linux/linux-2.4/patches/brcm/006-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   2005-01-19 15:09:29.000000000 +0100
   3 +++ linux.dev/arch/mips/kernel/time.c   2005-11-09 23:10:04.233756250 +0100
   4 @@ -151,6 +150,15 @@
   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 +       return (((__u64) timerhi) << 32) | ((__u64) ((__u32) read_c0_count()));
  16 +}
  17
  18  /*
  19   * timeofday services, for syscalls.
  20 @@ -761,3 +769,5 @@
  21  EXPORT_SYMBOL(to_tm);
  22  EXPORT_SYMBOL(rtc_set_time);
  23  EXPORT_SYMBOL(rtc_get_time);
  24 +EXPORT_SYMBOL(get_htscl);
  25 +EXPORT_SYMBOL(get_tscll);
  26 diff -urN linux.old/include/asm-mips/timex.h linux.dev/include/asm-mips/timex.h
  27 --- linux.old/include/asm-mips/timex.h  2003-08-25 13:44:44.000000000 +0200
  28 +++ linux.dev/include/asm-mips/timex.h  2005-11-09 22:15:59.352633250 +0100
  29 @@ -31,6 +31,19 @@
  30         return read_c0_count();
  31  }
  32
  33 +extern __u32 get_htscl(void);
  34 +extern __u64 get_tscll(void);
  35 +
  36 +#define rdtsc(low, high) \
  37 +               high = get_htscl(); \
  38 +               low = read_c0_count();
  39 +
  40 +#define rdtscl(low) \
  41 +               low = read_c0_count();
  42 +
  43 +#define rdtscll(val) \
  44 +               val = get_tscll();
  45 +
  46  #define vxtime_lock()          do {} while (0)
  47  #define vxtime_unlock()                do {} while (0)
  48
  49 diff -urN linux.old/include/net/pkt_sched.h linux.dev/include/net/pkt_sched.h
  50 --- linux.old/include/net/pkt_sched.h   2005-11-09 21:25:10.686721000 +0100
  51 +++ linux.dev/include/net/pkt_sched.h   2005-11-09 21:54:26.063807750 +0100
  52 @@ -5,7 +5,11 @@
  53  #define PSCHED_JIFFIES                 2
  54  #define PSCHED_CPU             3
  55
  56 +#ifdef __mips__
  57 +#define PSCHED_CLOCK_SOURCE    PSCHED_CPU
  58 +#else
  59  #define PSCHED_CLOCK_SOURCE    PSCHED_JIFFIES
  60 +#endif
  61
  62  #include <linux/config.h>
  63  #include <linux/types.h>
  64 @@ -271,7 +275,7 @@
  65  #define PSCHED_US2JIFFIE(delay) (((delay)+psched_clock_per_hz-1)/psched_clock_per_hz)
  66  #define PSCHED_JIFFIE2US(delay) ((delay)*psched_clock_per_hz)
  67
  68 -#ifdef CONFIG_X86_TSC
  69 +#if defined(CONFIG_X86_TSC) || defined(__mips__)
  70
  71  #define PSCHED_GET_TIME(stamp) \
  72  ({ u64 __cur; \