linux-2.6.0-test6 error during linking

Hello,
   I successfully compiled all linux-2.6.0-testx before test6 on RH7.2 
Alpha APX platform

Applied patch-2.6.0-test6 I receive the following error:

[root@alpha linux-2.6.0-test6]# make
make[1]: `arch/alpha/kernel/asm-offsets.s' is up to date.
 CHK     include/linux/compile.h
 GEN     .version
 CHK     include/linux/compile.h
 UPD     include/linux/compile.h
 CC      init/version.o
 LD      init/built-in.o
 LD      .tmp_vmlinux1
kernel/built-in.o(.text+0x480): In function `try_to_wake_up':
: undefined reference to `sched_clock'
kernel/built-in.o(.text+0x484): In function `try_to_wake_up':
: undefined reference to `sched_clock'
kernel/built-in.o(.text+0x140c): In function `schedule':
: undefined reference to `sched_clock'
kernel/built-in.o(.text+0x1410): In function `schedule':
: undefined reference to `sched_clock'
kernel/built-in.o(.text+0x5068): In function `copy_process':
: undefined reference to `sched_clock'
kernel/built-in.o(.text+0x506c): more undefined references to 
`sched_clock' follow
make: *** [.tmp_vmlinux1] Error 1


Do you have some suggestions?

Bye

Paolo Dovera [off-list ref] writes:

Applied patch-2.6.0-test6 I receive the following error:

kernel/built-in.o(.text+0x5068): In function `copy_process':
: undefined reference to `sched_clock'
kernel/built-in.o(.text+0x506c): more undefined references to
`sched_clock' follow

sched_clock is not implemented yet for Alpha. It is supposed to return
a high resolution timer. As workaround, you could just copy the
implementation from ARM, which simply returns the value based on
jiffies.  Ideally, one would take into account the cycle counter, but
it wraps every few seconds, which has to be taken care of.

-- 
	Falk

On Sunday 28 September 2003 23:51, Falk Hueffner wrote:

Paolo Dovera [off-list ref] writes:

quoted

Applied patch-2.6.0-test6 I receive the following error:

kernel/built-in.o(.text+0x5068): In function `copy_process':
: undefined reference to `sched_clock'

kernel/built-in.o(.text+0x506c): more undefined references to
`sched_clock' follow

sched_clock is not implemented yet for Alpha. It is supposed to return
a high resolution timer. As workaround, you could just copy the
implementation from ARM, which simply returns the value based on
jiffies.  Ideally, one would take into account the cycle counter, but
it wraps every few seconds, which has to be taken care of.

Can post here a patch based on arm ?

I am courious to see it !

Eventualy post it on linux kernel list or to Richard Henderson ?

Thx a lot !

Balint Cristian [off-list ref] writes:

On Sunday 28 September 2003 23:51, Falk Hueffner wrote:

quoted

sched_clock is not implemented yet for Alpha. It is supposed to
return a high resolution timer. As workaround, you could just copy
the implementation from ARM, which simply returns the value based
on jiffies.  Ideally, one would take into account the cycle
counter, but it wraps every few seconds, which has to be taken
care of.

Can post here a patch based on arm ?

Well, just copy the function:

--- arch/alpha/kernel/time.c~   2003-09-28 02:50:20.000000000 +0200
+++ arch/alpha/kernel/time.c    2003-09-28 13:39:58.000000000 +0200

@@ -570,3 +570,12 @@
 
        return retval;
 }
+
+/*
+ * Scheduler clock - returns current time in nanosec units.
+ * Should probably take rpcc into account for improved resolution
+ */
+unsigned long long sched_clock(void)
+{
+       return (unsigned long long) jiffies * (1000000000 / HZ);
+}

I've not tested this, it should work, but probably scheduling
behaviour will not be as good as it could be, although HZ being 1000
(or larger) on Alpha should help.

Eventualy post it on linux kernel list or to Richard Henderson ?

Not without testing it, and I have no time for that currently.

-- 
	Falk

On Monday 29 September 2003 12:02, Falk Hueffner wrote:

Balint Cristian [off-list ref] writes:

quoted

On Sunday 28 September 2003 23:51, Falk Hueffner wrote:

quoted

sched_clock is not implemented yet for Alpha. It is supposed to
return a high resolution timer. As workaround, you could just copy
the implementation from ARM, which simply returns the value based
on jiffies.  Ideally, one would take into account the cycle
counter, but it wraps every few seconds, which has to be taken
care of.

Can post here a patch based on arm ?

Thx a lot !

I test it today on an miata machine, i tell the result on that list.

On Sunday 28 September 2003 23:51, Falk Hueffner wrote:

quoted

Paolo Dovera [off-list ref] writes:

quoted

Applied patch-2.6.0-test6 I receive the following error:

kernel/built-in.o(.text+0x5068): In function `copy_process':
: undefined reference to `sched_clock'

kernel/built-in.o(.text+0x506c): more undefined references to 
`sched_clock' follow

sched_clock is not implemented yet for Alpha. It is 

supposed to return 

quoted

a high resolution timer. As workaround, you could just copy the 
implementation from ARM, which simply returns the value based on 
jiffies.  Ideally, one would take into account the cycle 

counter, but 

quoted

it wraps every few seconds, which has to be taken care of.

Can post here a patch based on arm ?

I am courious to see it !

Eventualy post it on linux kernel list or to Richard Henderson ?

Thx a lot !

Please take a look at the LKML. I had the same problem with -test6 and viro
already posted a workaround!

Best,
 Oliver

Thanks^2   to you!
It works fine
I'm trying 2.6.0-test6 on Tsunami Alpha platform

Ciao,
Paolo

Falk Hueffner wrote: