Re: Overruns are killing my recordings.

From: Mark Knecht
Date: Fri Oct 28 2005 - 18:07:29 EST

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In reply to: William Weston: "Re: Overruns are killing my recordings."
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On 10/28/05, William Weston <weston@xxxxxxxxxxxx> wrote:
> On Fri, 28 Oct 2005, Mark Knecht wrote:
>
> > OK then I'll just hang tinght. I've not seen any response on the email
> > I sent about 2.6.14-rc5-rt7. I cannot build it. It fails like this:
> >
> > CC arch/x86_64/kernel/sys_x86_64.o
> > CC arch/x86_64/kernel/x8664_ksyms.o
> > CC arch/x86_64/kernel/i387.o
> > CC arch/x86_64/kernel/syscall.o
> > CC arch/x86_64/kernel/vsyscall.o
> > arch/x86_64/kernel/vsyscall.c:57: error: `SEQLOCK_UNLOCKED' undeclared
> > here (not in a function)
> > make[1]: *** [arch/x86_64/kernel/vsyscall.o] Error 1
> > make: *** [arch/x86_64/kernel] Error 2
> > lightning linux #
> >
> > This is a new failure here since -rc5-rt3.
>
> I don't have a 64 bit machine to test on, but the following patch should
> at least make the compiler happy. This is the only place outside of
> seqlock.h that SEQLOCK_UNLOCKED is used, btw.
>
> If this kernel gives you the 'BUG in get_monotonic_clock_ts' and 'time
> warped' warnings, then you may want to look at the '2.6.14-rc4-rt7' lkml
> thread for Steven's patch to fix the false positives.
>
> Cheers,
> --ww
>
>
> --- linux-2.6.14-rc5-rt7/arch/x86_64/kernel/vsyscall.c.orig 2005-10-25 14:20:21.000000000 -0700
> +++ linux-2.6.14-rc5-rt7/arch/x86_64/kernel/vsyscall.c 2005-10-28 14:08:37.000000000 -0700
> @@ -54,7 +54,7 @@
> struct vsyscall_gtod_data_t __vsyscall_gtod_data __section_vsyscall_gtod_data;
>
> extern seqlock_t vsyscall_gtod_lock;
> -seqlock_t __vsyscall_gtod_lock __section_vsyscall_gtod_lock = SEQLOCK_UNLOCKED;
> +seqlock_t __vsyscall_gtod_lock __section_vsyscall_gtod_lock = SEQLOCK_UNLOCKED(__section_vsyscall_gtod_lock);
>
>
> #include <asm/unistd.h>
>
>

William,
Thanks for trying but this patch has only uncovered mare problems
for me. Since it's Friday evening and I won't have much more time I
think that since 2.6.14 is out I should just wait for Ingo to release
patch-2.6.14-rt1 and we'll see how it goes from there.

As for what I'm seeing here's what I have after the patch:

<SNIP>
struct clocksource clock;
};

extern struct vsyscall_gtod_data_t vsyscall_gtod_data;
struct vsyscall_gtod_data_t __vsyscall_gtod_data __section_vsyscall_gtod_data;

extern seqlock_t vsyscall_gtod_lock;
seqlock_t __vsyscall_gtod_lock __section_vsyscall_gtod_lock =
SEQLOCK_UNLOCKED(__section_vsyscall_gtod_lock);

#include <asm/unistd.h>
<SNIP>

Here are the error messages:

CC arch/x86_64/kernel/syscall.o
CC arch/x86_64/kernel/vsyscall.o
arch/x86_64/kernel/vsyscall.c:57: error: parse error before '.' token
arch/x86_64/kernel/vsyscall.c:57: error: parse error before '.' token
arch/x86_64/kernel/vsyscall.c:57: error: parse error before '}' token
arch/x86_64/kernel/vsyscall.c:57: warning: implicit declaration of
function `aligned'
arch/x86_64/kernel/vsyscall.c:57: warning: left-hand operand of comma
expression has no effect
arch/x86_64/kernel/vsyscall.c:57: warning: left-hand operand of comma
expression has no effect
arch/x86_64/kernel/vsyscall.c:57: error: invalid lvalue in unary `&'
arch/x86_64/kernel/vsyscall.c:57: warning: use of compound expressions
as lvalues is deprecated
arch/x86_64/kernel/vsyscall.c:57: warning: use of compound expressions
as lvalues is deprecated
arch/x86_64/kernel/vsyscall.c:57: error: parse error before ')' token
arch/x86_64/kernel/vsyscall.c:57: error: parse error before '.' token
arch/x86_64/kernel/vsyscall.c:57: error: parse error before '}' token
In file included from include/asm/unistd.h:782,
from arch/x86_64/kernel/vsyscall.c:60:
include/asm/ptrace.h:97: error: `EF_PF' undeclared here (not in a function)
include/asm/ptrace.h:97: warning: excess elements in struct initializer
include/asm/ptrace.h:97: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:98: error: `EF_AF' undeclared here (not in a function)
include/asm/ptrace.h:98: warning: excess elements in struct initializer
include/asm/ptrace.h:98: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:99: error: `EF_ZF' undeclared here (not in a function)
include/asm/ptrace.h:99: warning: excess elements in struct initializer
include/asm/ptrace.h:99: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:100: error: `EF_SF' undeclared here (not in a function)
include/asm/ptrace.h:100: warning: excess elements in struct initializer
include/asm/ptrace.h:100: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:101: error: `EF_TF' undeclared here (not in a function)
include/asm/ptrace.h:101: warning: excess elements in struct initializer
include/asm/ptrace.h:101: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:102: error: `EF_IE' undeclared here (not in a function)
include/asm/ptrace.h:102: warning: excess elements in struct initializer
include/asm/ptrace.h:102: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:103: error: `EF_DF' undeclared here (not in a function)
include/asm/ptrace.h:103: warning: excess elements in struct initializer
include/asm/ptrace.h:103: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:104: error: `EF_OF' undeclared here (not in a function)
include/asm/ptrace.h:104: warning: excess elements in struct initializer
include/asm/ptrace.h:104: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:105: error: `EF_IOPL' undeclared here (not in a function)
include/asm/ptrace.h:105: warning: excess elements in struct initializer
include/asm/ptrace.h:105: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:106: error: `EF_IOPL_RING0' undeclared here (not
in a function)
include/asm/ptrace.h:106: warning: excess elements in struct initializer
include/asm/ptrace.h:106: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:107: error: `EF_IOPL_RING1' undeclared here (not
in a function)
include/asm/ptrace.h:107: warning: excess elements in struct initializer
include/asm/ptrace.h:107: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:108: error: `EF_IOPL_RING2' undeclared here (not
in a function)
include/asm/ptrace.h:108: warning: excess elements in struct initializer
include/asm/ptrace.h:108: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:109: error: `EF_NT' undeclared here (not in a function)
include/asm/ptrace.h:109: warning: excess elements in struct initializer
include/asm/ptrace.h:109: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:110: error: `EF_RF' undeclared here (not in a function)
include/asm/ptrace.h:110: warning: excess elements in struct initializer
include/asm/ptrace.h:110: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:111: error: `EF_VM' undeclared here (not in a function)
include/asm/ptrace.h:111: warning: excess elements in struct initializer
include/asm/ptrace.h:111: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:112: error: `EF_AC' undeclared here (not in a function)
include/asm/ptrace.h:112: warning: excess elements in struct initializer
include/asm/ptrace.h:112: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:113: error: `EF_VIF' undeclared here (not in a function)
include/asm/ptrace.h:113: warning: excess elements in struct initializer
include/asm/ptrace.h:113: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:114: error: `EF_VIP' undeclared here (not in a function)
include/asm/ptrace.h:114: warning: excess elements in struct initializer
include/asm/ptrace.h:114: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:115: error: `EF_ID' undeclared here (not in a function)
include/asm/ptrace.h:115: warning: excess elements in struct initializer
include/asm/ptrace.h:115: warning: (near initialization for
`(anonymous).lock.wait_list.dp_node')
include/asm/ptrace.h:116: error: parse error before ';' token
arch/x86_64/kernel/vsyscall.c:81: error: `tv' undeclared here (not in
a function)
arch/x86_64/kernel/vsyscall.c:81: error: called object is not a function
arch/x86_64/kernel/vsyscall.c:81: error: `tz' undeclared here (not in
a function)
arch/x86_64/kernel/vsyscall.c:81: error: called object is not a function
arch/x86_64/kernel/vsyscall.c:81: warning: excess elements in struct initializer
arch/x86_64/kernel/vsyscall.c:81: warning: (near initialization for
`(anonymous)')
arch/x86_64/kernel/vsyscall.c:81: error: parse error before ':' token
arch/x86_64/kernel/vsyscall.c:81: warning: excess elements in struct initializer
arch/x86_64/kernel/vsyscall.c:81: warning: (near initialization for
`(anonymous)')
arch/x86_64/kernel/vsyscall.c:81: warning: excess elements in struct initializer
arch/x86_64/kernel/vsyscall.c:81: warning: (near initialization for
`(anonymous)')
arch/x86_64/kernel/vsyscall.c:81: error: parse error before ')' token
arch/x86_64/kernel/vsyscall.c:84: error: initializer element is not constant
arch/x86_64/kernel/vsyscall.c:84: error: (near initialization for
`__vsyscall_gtod_lock.lock')
arch/x86_64/kernel/vsyscall.c:86: error: `cycle_delta' undeclared here
(not in a function)
arch/x86_64/kernel/vsyscall.c:86: warning: excess elements in struct initializer
arch/x86_64/kernel/vsyscall.c:86: warning: (near initialization for
`__vsyscall_gtod_lock')
arch/x86_64/kernel/vsyscall.c:98: warning: type defaults to `int' in
declaration of `now'
arch/x86_64/kernel/vsyscall.c:98: error: initializer element is not constant
arch/x86_64/kernel/vsyscall.c:98: warning: data definition has no type
or storage class
arch/x86_64/kernel/vsyscall.c:99: warning: type defaults to `int' in
declaration of `cycle_delta'
arch/x86_64/kernel/vsyscall.c:100: error: initializer element is not constant
arch/x86_64/kernel/vsyscall.c:100: warning: data definition has no
type or storage class
arch/x86_64/kernel/vsyscall.c:103: warning: type defaults to `int' in
declaration of `nsec_delta'
arch/x86_64/kernel/vsyscall.c:103: error: initializer element is not constant
arch/x86_64/kernel/vsyscall.c:103: warning: data definition has no
type or storage class
arch/x86_64/kernel/vsyscall.c:104: warning: type defaults to `int' in
declaration of `nsec_delta'
arch/x86_64/kernel/vsyscall.c:104: error: redefinition of 'nsec_delta'
arch/x86_64/kernel/vsyscall.c:103: error: previous definition of
'nsec_delta' was here
arch/x86_64/kernel/vsyscall.c:104: error: initializer element is not constant
arch/x86_64/kernel/vsyscall.c:104: warning: data definition has no
type or storage class
arch/x86_64/kernel/vsyscall.c:107: warning: type defaults to `int' in
declaration of `tv'
arch/x86_64/kernel/vsyscall.c:107: error: incompatible types in initialization
arch/x86_64/kernel/vsyscall.c:107: error: initializer element is not constant
arch/x86_64/kernel/vsyscall.c:107: warning: data definition has no
type or storage class
arch/x86_64/kernel/vsyscall.c:108: error: parse error before '{' token
arch/x86_64/kernel/vsyscall.c:108: warning: type defaults to `int' in
declaration of `__rem'
arch/x86_64/kernel/vsyscall.c:108: error: conflicting types for '__rem'
arch/x86_64/kernel/vsyscall.c:108: error: previous declaration of
'__rem' was here
arch/x86_64/kernel/vsyscall.c:108: error: `__base' undeclared here
(not in a function)
arch/x86_64/kernel/vsyscall.c:108: warning: data definition has no
type or storage class
arch/x86_64/kernel/vsyscall.c:108: warning: type defaults to `int' in
declaration of `nsec_delta'
arch/x86_64/kernel/vsyscall.c:108: error: redefinition of 'nsec_delta'
arch/x86_64/kernel/vsyscall.c:104: error: previous definition of
'nsec_delta' was here
arch/x86_64/kernel/vsyscall.c:108: error: redefinition of 'nsec_delta'
arch/x86_64/kernel/vsyscall.c:104: error: previous definition of
'nsec_delta' was here
arch/x86_64/kernel/vsyscall.c:108: warning: data definition has no
type or storage class
arch/x86_64/kernel/vsyscall.c:108: warning: type defaults to `int' in
declaration of `__rem'
arch/x86_64/kernel/vsyscall.c:108: warning: data definition has no
type or storage class
arch/x86_64/kernel/vsyscall.c:108: error: parse error before '}' token
arch/x86_64/kernel/vsyscall.c:114: warning: type defaults to `int' in
declaration of `__ret'
arch/x86_64/kernel/vsyscall.c:114: warning: data definition has no
type or storage class
arch/x86_64/kernel/vsyscall.c:114: error: parse error before '}' token
arch/x86_64/kernel/vsyscall.c: In function `vgettimeofday':
arch/x86_64/kernel/vsyscall.c:146: warning: implicit declaration of
function `do_vgettimeofday'
make[1]: *** [arch/x86_64/kernel/vsyscall.o] Error 1
make: *** [arch/x86_64/kernel] Error 2
lightning linux #

Thanks for trying,
Mark
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Next message: Rajesh Shah: "Re: [GIT PATCH] PCI patches for 2.6.14"
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