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Date: Fri, 18 May 2007 10:39:58 +0300
From: "emin ak" <eminak71@...il.com>
To: "Ingo Molnar" <mingo@...e.hu>
Cc: linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org,
"Thomas Gleixner" <tglx@...utronix.de>
Subject: Re: v2.6.21-rt3
Hi,
I have tried to compile -rt3 patch for ppc (mpc8540ads) and it failed
with undefined referance errors on ppc/kernel/asm-offsets.c. Here is
the compiler outputs:
HOSTCC scripts/basic/fixdep
HOSTCC scripts/basic/docproc
HOSTCC scripts/kconfig/conf.o
HOSTCC scripts/kconfig/kxgettext.o
SHIPPED scripts/kconfig/zconf.tab.c
SHIPPED scripts/kconfig/lex.zconf.c
SHIPPED scripts/kconfig/zconf.hash.c
HOSTCC scripts/kconfig/zconf.tab.o
HOSTLD scripts/kconfig/conf
scripts/kconfig/conf -s arch/ppc/Kconfig
CHK include/linux/version.h
UPD include/linux/version.h
CHK include/linux/utsrelease.h
UPD include/linux/utsrelease.h
SYMLINK include/asm -> include/asm-ppc
CC arch/ppc/kernel/asm-offsets.s
In file included from arch/ppc/include/asm/hw_irq.h:110,
from include/asm/system.h:10,
from include/linux/list.h:9,
from include/linux/signal.h:8,
from arch/ppc/kernel/asm-offsets.c:11:
include/linux/irqflags.h:92:1: warning: "raw_local_irq_save" redefined
In file included from include/asm/system.h:10,
from include/linux/list.h:9,
from include/linux/signal.h:8,
from arch/ppc/kernel/asm-offsets.c:11:
arch/ppc/include/asm/hw_irq.h:103:1: warning: this is the location of
the previous definition
In file included from arch/ppc/include/asm/hw_irq.h:110,
from include/asm/system.h:10,
from include/linux/list.h:9,
from include/linux/signal.h:8,
from arch/ppc/kernel/asm-offsets.c:11:
include/linux/irqflags.h:97:1: warning: "raw_local_irq_restore" redefined
In file included from include/asm/system.h:10,
from include/linux/list.h:9,
from include/linux/signal.h:8,
from arch/ppc/kernel/asm-offsets.c:11:
arch/ppc/include/asm/hw_irq.h:59:1: warning: this is the location of
the previous definition
In file included from include/linux/time.h:7,
from include/linux/timex.h:57,
from include/linux/sched.h:51,
from arch/ppc/kernel/asm-offsets.c:12:
include/linux/seqlock.h: In function '__read_seqretry':
include/linux/seqlock.h:139: warning: implicit declaration of function
'local_irq_save'
include/linux/seqlock.h:140: warning: implicit declaration of function
'local_irq_restore'
arch/ppc/kernel/asm-offsets.c: In function 'main':
arch/ppc/kernel/asm-offsets.c:148: error: 'struct vdso_data' has no
member named 'tb_orig_stamp'
arch/ppc/kernel/asm-offsets.c:149: error: 'struct vdso_data' has no
member named 'tb_ticks_per_sec'
arch/ppc/kernel/asm-offsets.c:150: error: 'struct vdso_data' has no
member named 'tb_to_xs'
arch/ppc/kernel/asm-offsets.c:151: error: 'struct vdso_data' has no
member named 'stamp_xsec'
arch/ppc/kernel/asm-offsets.c:152: error: 'struct vdso_data' has no
member named 'tb_update_count'
arch/ppc/kernel/asm-offsets.c:153: error: 'struct vdso_data' has no
member named 'tz_minuteswest'
arch/ppc/kernel/asm-offsets.c:154: error: 'struct vdso_data' has no
member named 'tz_dsttime'
arch/ppc/kernel/asm-offsets.c:156: error: 'struct vdso_data' has no
member named 'wtom_clock_sec'
arch/ppc/kernel/asm-offsets.c:157: error: 'struct vdso_data' has no
member named 'wtom_clock_nsec'
make[1]: *** [arch/ppc/kernel/asm-offsets.s] Error 1
make: *** [prepare0] Error 2
For a workaround to overcome this problem, I have applied below patch
to asm-offsets.c:
diff -uNr linux-2.6.21/arch/ppc/kernel/asm-offsets.c
linux-2.6.21_orig/arch/ppc/kernel/asm-offsets.c
--- linux-2.6.21/arch/ppc/kernel/asm-offsets.c 2007-05-18
09:47:03.000000000 +0300
+++ linux-2.6.21_orj/arch/ppc/kernel/asm-offsets.c 2007-04-26
06:08:32.000000000 +0300
@@ -145,7 +145,6 @@
DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28);
/* datapage offsets for use by vdso */
-#ifdef CONFIG_PPC64
DEFINE(CFG_TB_ORIG_STAMP, offsetof(struct vdso_data, tb_orig_stamp));
DEFINE(CFG_TB_TICKS_PER_SEC, offsetof(struct vdso_data,
tb_ticks_per_sec));
DEFINE(CFG_TB_TO_XS, offsetof(struct vdso_data, tb_to_xs));
@@ -153,11 +152,9 @@
DEFINE(CFG_TB_UPDATE_COUNT, offsetof(struct vdso_data,
tb_update_count));
DEFINE(CFG_TZ_MINUTEWEST, offsetof(struct vdso_data, tz_minuteswest));
DEFINE(CFG_TZ_DSTTIME, offsetof(struct vdso_data, tz_dsttime));
+ DEFINE(CFG_SYSCALL_MAP32, offsetof(struct vdso_data, syscall_map_32));
DEFINE(WTOM_CLOCK_SEC, offsetof(struct vdso_data, wtom_clock_sec));
DEFINE(WTOM_CLOCK_NSEC, offsetof(struct vdso_data, wtom_clock_nsec));
-#endif /* CONFIG_PPC64 */
-
- DEFINE(CFG_SYSCALL_MAP32, offsetof(struct vdso_data, syscall_map_32));
DEFINE(TVAL32_TV_SEC, offsetof(struct timeval, tv_sec));
DEFINE(TVAL32_TV_USEC, offsetof(struct timeval, tv_usec));
DEFINE(TSPEC32_TV_SEC, offsetof(struct timespec, tv_sec));
Then it failed again on asm/hw_irq.h because of syntax errors. Here is
the outputs:
eminhp:/opt/tmp/linux_2.6.21/linux-2.6.21 # make uImage
scripts/kconfig/conf -s arch/ppc/Kconfig
CHK include/linux/version.h
UPD include/linux/version.h
CHK include/linux/utsrelease.h
UPD include/linux/utsrelease.h
SYMLINK include/asm -> include/asm-ppc
CC arch/ppc/kernel/asm-offsets.s
In file included from arch/ppc/include/asm/hw_irq.h:110,
from include/asm/system.h:10,
from include/linux/list.h:9,
from include/linux/signal.h:8,
from arch/ppc/kernel/asm-offsets.c:11:
include/linux/irqflags.h:92:1: warning: "raw_local_irq_save" redefined
In file included from include/asm/system.h:10,
from include/linux/list.h:9,
from include/linux/signal.h:8,
from arch/ppc/kernel/asm-offsets.c:11:
arch/ppc/include/asm/hw_irq.h:103:1: warning: this is the location of
the previous definition
In file included from arch/ppc/include/asm/hw_irq.h:110,
from include/asm/system.h:10,
from include/linux/list.h:9,
from include/linux/signal.h:8,
from arch/ppc/kernel/asm-offsets.c:11:
include/linux/irqflags.h:97:1: warning: "raw_local_irq_restore" redefined
In file included from include/asm/system.h:10,
from include/linux/list.h:9,
from include/linux/signal.h:8,
from arch/ppc/kernel/asm-offsets.c:11:
arch/ppc/include/asm/hw_irq.h:59:1: warning: this is the location of
the previous definition
In file included from include/linux/time.h:7,
from include/linux/timex.h:57,
from include/linux/sched.h:51,
from arch/ppc/kernel/asm-offsets.c:12:
include/linux/seqlock.h: In function '__read_seqretry':
include/linux/seqlock.h:139: warning: implicit declaration of function
'local_irq_save'
include/linux/seqlock.h:140: warning: implicit declaration of function
'local_irq_restore'
GEN include/asm-ppc/asm-offsets.h
CC scripts/mod/empty.o
HOSTCC scripts/mod/mk_elfconfig
MKELF scripts/mod/elfconfig.h
HOSTCC scripts/mod/file2alias.o
HOSTCC scripts/mod/modpost.o
HOSTCC scripts/mod/sumversion.o
HOSTLD scripts/mod/modpost
CC init/main.o
In file included from include/asm/system.h:10,
from include/linux/spinlock.h:95,
from include/linux/module.h:9,
from init/main.c:13:
arch/ppc/include/asm/hw_irq.h:59:1: warning: "raw_local_irq_restore" redefined
In file included from include/linux/spinlock.h:93,
from include/linux/module.h:9,
from init/main.c:13:
include/linux/irqflags.h:97:1: warning: this is the location of the
previous definition
In file included from include/asm/system.h:10,
from include/linux/spinlock.h:95,
from include/linux/module.h:9,
from init/main.c:13:
arch/ppc/include/asm/hw_irq.h:65:46: error: macro
"raw_local_irq_disable" passed 1 arguments, but takes just 0
In file included from include/asm/system.h:10,
from include/linux/spinlock.h:95,
from include/linux/module.h:9,
from init/main.c:13:
arch/ppc/include/asm/hw_irq.h:66: error: syntax error before '{' token
arch/ppc/include/asm/hw_irq.h:77:45: error: macro
"raw_local_irq_enable" passed 1 arguments, but takes just 0
arch/ppc/include/asm/hw_irq.h:78: error: syntax error before '{' token
arch/ppc/include/asm/hw_irq.h:103:1: warning: "raw_local_irq_save" redefined
In file included from include/linux/spinlock.h:93,
from include/linux/module.h:9,
from init/main.c:13:
include/linux/irqflags.h:92:1: warning: this is the location of the
previous definition
In file included from include/linux/time.h:7,
from include/linux/stat.h:57,
from include/linux/module.h:11,
from init/main.c:13:
include/linux/seqlock.h: In function '__read_seqretry':
include/linux/seqlock.h:139: warning: implicit declaration of function
'local_irq_save'
include/linux/seqlock.h:140: warning: implicit declaration of function
'local_irq_restore'
In file included from include/linux/rtc.h:102,
from include/linux/efi.h:19,
from init/main.c:43:
include/linux/interrupt.h: In function 'cli':
include/linux/interrupt.h:210: warning: implicit declaration of
function 'local_irq_disable'
include/linux/interrupt.h: In function 'sti':
include/linux/interrupt.h:214: warning: implicit declaration of
function 'local_irq_enable'
include/linux/interrupt.h: In function 'save_flags':
include/linux/interrupt.h:218: warning: implicit declaration of
function 'local_save_flags'
init/main.c: In function 'start_kernel':
init/main.c:566: warning: implicit declaration of function 'irqs_disabled'
make[1]: *** [init/main.o] Error 1
make: *** [init] Error 2
Is a a compiler issue related to assembler (I'am currently using
gcc-4.0.0) or is this a bug?
Thanks alot.
Emin
2007/5/17, Ingo Molnar <mingo@...e.hu>:
> i'm pleased to announce the v2.6.21-rt3 kernel, which can be downloaded
> from the usual place:
>
> http://redhat.com/~mingo/realtime-preempt/
>
> more info about the -rt patchset can be found in the RT wiki:
>
> http://rt.wiki.kernel.org
>
> This is a fixes-only release assembled by Thomas Gleixner. Many PPC
> fixes from Sergei Shtylyov, dynticks softirq fixes from Mikulas Patocka,
> a CONFIG_IRQSOFF_TIMING fix from Daniel Walker and x86_64 hrt fixes from
> Thomas Gleixner.
>
> to build a 2.6.21-rt3 tree, the following patches should be applied:
>
> http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.21.tar.bz2
> http://redhat.com/~mingo/realtime-preempt/patch-2.6.21-rt3
>
> Ingo
> -
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