diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 1998-03-17 22:05:47 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 1998-03-17 22:05:47 +0000 |
| commit | 27cfca1ec98e91261b1a5355d10a8996464b63af (patch) | |
| tree | 8e895a53e372fa682b4c0a585b9377d67ed70d0e /arch/m68k/kernel/time.c | |
| parent | 6a76fb7214c477ccf6582bd79c5b4ccc4f9c41b1 (diff) | |
Look Ma' what I found on my harddisk ...
o New faster syscalls for 2.1.x, too
o Upgrade to 2.1.89.
Don't try to run this. It's flaky as hell. But feel free to debug ...
Diffstat (limited to 'arch/m68k/kernel/time.c')
| -rw-r--r-- | arch/m68k/kernel/time.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c index 7b3acdfa6..51359f046 100644 --- a/arch/m68k/kernel/time.c +++ b/arch/m68k/kernel/time.c @@ -7,6 +7,7 @@ * Most of the stuff is located in the machine specific files. */ +#include <linux/config.h> /* CONFIG_HEARTBEAT */ #include <linux/errno.h> #include <linux/sched.h> #include <linux/kernel.h> @@ -66,11 +67,35 @@ static void timer_interrupt(int irq, void *dummy, struct pt_regs * regs) */ if (time_state != TIME_BAD && xtime.tv_sec > last_rtc_update + 660 && xtime.tv_usec > 500000 - (tick >> 1) && - xtime.tv_usec < 500000 + (tick >> 1)) + xtime.tv_usec < 500000 + (tick >> 1)) { if (set_rtc_mmss(xtime.tv_sec) == 0) last_rtc_update = xtime.tv_sec; else last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */ + } +#ifdef CONFIG_HEARTBEAT + /* use power LED as a heartbeat instead -- much more useful + for debugging -- based on the version for PReP by Cort */ + /* acts like an actual heart beat -- ie thump-thump-pause... */ + if (mach_heartbeat) { + static unsigned cnt = 0, period = 0, dist = 0; + + if (cnt == 0 || cnt == dist) + mach_heartbeat( 1 ); + else if (cnt == 7 || cnt == dist+7) + mach_heartbeat( 0 ); + + if (++cnt > period) { + cnt = 0; + /* The hyperbolic function below modifies the heartbeat period + * length in dependency of the current (5min) load. It goes + * through the points f(0)=126, f(1)=86, f(5)=51, + * f(inf)->30. */ + period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30; + dist = period / 4; + } + } +#endif /* CONFIG_HEARTBEAT */ } /* Converts Gregorian date to seconds since 1970-01-01 00:00:00. |