Re: having a hard time with 2.4.x
While attempting to port Linux to a new platform using a compiler other then GCC I noticed that there appears to be a volatile missing on the declaration of xtime in include/linux/sched.h. The compiler I am using considers this to be an error. The following may help your problem. include/linux/sched.h *** sched.h 2001/02/05 21:48:10 1.3 --- sched.h 2001/02/07 05:19:09 *** *** 533,539 extern unsigned long volatile jiffies; extern unsigned long itimer_ticks; extern unsigned long itimer_next; ! extern struct timeval xtime; extern void do_timer(struct pt_regs *); extern unsigned int * prof_buffer; --- 533,539 extern unsigned long volatile jiffies; extern unsigned long itimer_ticks; extern unsigned long itimer_next; ! extern volatile struct timeval xtime; extern void do_timer(struct pt_regs *); Ulrich Windl writes: > > Hello, > > I have some news on the topic of timekeeping in Linux-2.4: > > As Alan Cox pointed out the ACPI changes between 2.4.0 and 2.4.1 created a > extremely slow console output (if not more). Configuring away ACPI support > solved that problem. > > However there is still a problem that I cannot explain. I wrote a test program > for my modified kernel (I did not try the original one). I'll include the > program plus results (if you want to see the patch go to > ftp.kernel.org/pub/linux/daemons/ntp/PPS and get PPS-2.4.0-pre3.tar.bz2 (patch > plus signature)): > > #include > #include > #define NTP_NANO > #include > > int main() > { > struct timextx; > longlastns = 0; > > tx.modes = 0; > while(1) > { > adjtimex(); > printf("%d %d %d\n", > tx.time.tv_sec, tx.time.tv_nsec, > tx.time.tv_nsec - lastns); > lastns = tx.time.tv_nsec; > fflush(stdout); > } > } -- Steve Piatz [EMAIL PROTECTED] Cray Inc. 651-605-9049 1340 Mendota Heights Road Mendota Heights, MN 55120 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: having a hard time with 2.4.x
While attempting to port Linux to a new platform using a compiler other then GCC I noticed that there appears to be a volatile missing on the declaration of xtime in include/linux/sched.h. The compiler I am using considers this to be an error. The following may help your problem. include/linux/sched.h *** sched.h 2001/02/05 21:48:10 1.3 --- sched.h 2001/02/07 05:19:09 *** *** 533,539 extern unsigned long volatile jiffies; extern unsigned long itimer_ticks; extern unsigned long itimer_next; ! extern struct timeval xtime; extern void do_timer(struct pt_regs *); extern unsigned int * prof_buffer; --- 533,539 extern unsigned long volatile jiffies; extern unsigned long itimer_ticks; extern unsigned long itimer_next; ! extern volatile struct timeval xtime; extern void do_timer(struct pt_regs *); Ulrich Windl writes: Hello, I have some news on the topic of timekeeping in Linux-2.4: As Alan Cox pointed out the ACPI changes between 2.4.0 and 2.4.1 created a extremely slow console output (if not more). Configuring away ACPI support solved that problem. However there is still a problem that I cannot explain. I wrote a test program for my modified kernel (I did not try the original one). I'll include the program plus results (if you want to see the patch go to ftp.kernel.org/pub/linux/daemons/ntp/PPS and get PPS-2.4.0-pre3.tar.bz2 (patch plus signature)): #include time.h #include stdio.h #define NTP_NANO #include sys/timex.h int main() { struct timextx; longlastns = 0; tx.modes = 0; while(1) { adjtimex(tx); printf("%d %d %d\n", tx.time.tv_sec, tx.time.tv_nsec, tx.time.tv_nsec - lastns); lastns = tx.time.tv_nsec; fflush(stdout); } } -- Steve Piatz [EMAIL PROTECTED] Cray Inc. 651-605-9049 1340 Mendota Heights Road Mendota Heights, MN 55120 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/