From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Date: Sun, 17 Jun 2007 18:59:18 +0200 > On Sun, 2007-06-17 at 11:49 -0500, Nelson Castillo wrote: > > > > There are many choices and > > > > I don't know what is the more friendly. By friendly I mean the one that > > > > is likely to be merged and that cooperate with you. > > > > > > Which choices do you mean ? > > > > I mean implementations. I've seen lot of them but i don't know which one > > to try (I'm new to RT and the implementation in this thread seems to > > be very nice). > > Thanks :) > > > > > http://people.redhat.com/mingo/realtime-preempt/patch-2.6.21.4-rt14 > > > > > > > > : undefined reference to `usecs_to_cycles' > > > > make: *** [.tmp_vmlinux1] Error 1 > > > > > > Which ARM sub arch ? > > > > sub arch AT91 -- (Atmel AT91RM9200 processor). > > It lacks support for the generic timeofday and clock event layers, which > causes the compile breakage. I am working on Renesas SuperH platforms. I faced the similar compile errors because 2.6.21.X in SH does not support GENERIC_TIME yet. I made a workaround patch. Is this correct? Thanks, --- Katsuya Matsubara @ Igel Co., Ltd matsu@xxxxxxxxxx diff -cr linux-2.6.21.5-rt14/kernel/hrtimer.c linux-2.6.21.5-rt14-nogt/kernel/hrtimer.c *** linux-2.6.21.5-rt14/kernel/hrtimer.c 2007-06-18 19:55:55.000000000 +0900 --- linux-2.6.21.5-rt14-nogt/kernel/hrtimer.c 2007-06-16 16:36:10.000000000 +0900 *************** *** 119,127 **** --- 119,131 ---- do { seq = read_seqbegin(&xtime_lock); + #ifdef CONFIG_GENERIC_TIME *ts = xtime; nsecs = __get_nsec_offset(); timespec_add_ns(ts, nsecs); + #else + getnstimeofday(ts); + #endif tomono = wall_to_monotonic; } while (read_seqretry(&xtime_lock, seq)); diff -cr linux-2.6.21.5-rt14/kernel/time/ntp.c linux-2.6.21.5-rt14-nogt/kernel/time/ntp.c *** linux-2.6.21.5-rt14/kernel/time/ntp.c 2007-06-18 19:55:56.000000000 +0900 --- linux-2.6.21.5-rt14-nogt/kernel/time/ntp.c 2007-06-16 16:37:46.000000000 +0900 *************** *** 120,126 **** --- 120,128 ---- */ time_interpolator_update(-NSEC_PER_SEC); time_state = TIME_OOP; + #ifdef CONFIG_GENERIC_TIME warp_check_clock_was_changed(); + #endif clock_was_set(); printk(KERN_NOTICE "Clock: inserting leap second " "23:59:60 UTC\n"); *************** *** 136,142 **** --- 138,146 ---- */ time_interpolator_update(NSEC_PER_SEC); time_state = TIME_WAIT; + #ifdef CONFIG_GENERIC_TIME warp_check_clock_was_changed(); + #endif clock_was_set(); printk(KERN_NOTICE "Clock: deleting leap second " "23:59:59 UTC\n"); diff -cr linux-2.6.21.5-rt14/kernel/time.c linux-2.6.21.5-rt14-nogt/kernel/time.c *** linux-2.6.21.5-rt14/kernel/time.c 2007-06-18 19:55:56.000000000 +0900 --- linux-2.6.21.5-rt14-nogt/kernel/time.c 2007-06-16 16:36:10.000000000 +0900 *************** *** 135,141 **** --- 135,143 ---- wall_to_monotonic.tv_sec -= sys_tz.tz_minuteswest * 60; xtime.tv_sec += sys_tz.tz_minuteswest * 60; time_interpolator_reset(); + #ifdef CONFIG_GENERIC_TIME warp_check_clock_was_changed(); + #endif write_sequnlock_irq(&xtime_lock); clock_was_set(); } *************** *** 320,326 **** --- 322,330 ---- time_esterror = NTP_PHASE_LIMIT; time_interpolator_reset(); } + #ifdef CONFIG_GENERIC_TIME warp_check_clock_was_changed(); + #endif write_sequnlock_irq(&xtime_lock); clock_was_set(); return 0; diff -cr linux-2.6.21.5-rt14/kernel/timer.c linux-2.6.21.5-rt14-nogt/kernel/timer.c *** linux-2.6.21.5-rt14/kernel/timer.c 2007-06-18 19:55:56.000000000 +0900 --- linux-2.6.21.5-rt14-nogt/kernel/timer.c 2007-06-16 16:36:10.000000000 +0900 *************** *** 1165,1171 **** --- 1165,1173 ---- clock->cycle_accumulated = 0; clock->error = 0; timekeeping_suspended = 0; + #ifdef CONFIG_GENERIC_TIME warp_check_clock_was_changed(); + #endif write_sequnlock_irqrestore(&xtime_lock, flags); touch_softlockup_watchdog(); *************** *** 1728,1736 **** --- 1730,1742 ---- * too. */ + #ifdef CONFIG_GENERIC_TIME tp = xtime; nsecs = __get_nsec_offset(); timespec_add_ns(&tp, nsecs); + #else + getnstimeofday(&tp); + #endif tp.tv_sec += wall_to_monotonic.tv_sec; tp.tv_nsec += wall_to_monotonic.tv_nsec; - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
