* ia64 allmodconfig on current mainline
@ 2008-08-12 22:06 Andrew Morton
2008-08-12 22:22 ` Rafael J. Wysocki
0 siblings, 1 reply; 6+ messages in thread
From: Andrew Morton @ 2008-08-12 22:06 UTC (permalink / raw)
To: linux-ia64
/opt/crosstool/gcc-3.4.5-glibc-2.3.6/ia64-unknown-linux-gnu/bin/ia64-unknown-linux-gnu-ld: section .data [0000000004ea0000 -> 0000000004f656e7] overlaps section .data.percpu [0000000004e90000 -> 0000000004ea0d17]
make: *** [.tmp_vmlinux1] Error 1
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: ia64 allmodconfig on current mainline
2008-08-12 22:06 ia64 allmodconfig on current mainline Andrew Morton
@ 2008-08-12 22:22 ` Rafael J. Wysocki
2008-08-12 22:58 ` Andrew Morton
0 siblings, 1 reply; 6+ messages in thread
From: Rafael J. Wysocki @ 2008-08-12 22:22 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-ia64, LKML
On Wednesday, 13 of August 2008, Andrew Morton wrote:
> /opt/crosstool/gcc-3.4.5-glibc-2.3.6/ia64-unknown-linux-gnu/bin/ia64-unknown-linux-gnu-ld: section .data [0000000004ea0000 -> 0000000004f656e7] overlaps section .data.percpu [0000000004e90000 -> 0000000004ea0d17]
> make: *** [.tmp_vmlinux1] Error 1
I gather this is a regression from .26?
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: ia64 allmodconfig on current mainline
2008-08-12 22:22 ` Rafael J. Wysocki
@ 2008-08-12 22:58 ` Andrew Morton
2008-08-13 0:21 ` Luck, Tony
0 siblings, 1 reply; 6+ messages in thread
From: Andrew Morton @ 2008-08-12 22:58 UTC (permalink / raw)
To: Rafael J. Wysocki; +Cc: linux-ia64, linux-kernel
On Wed, 13 Aug 2008 00:22:50 +0200
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> On Wednesday, 13 of August 2008, Andrew Morton wrote:
> > /opt/crosstool/gcc-3.4.5-glibc-2.3.6/ia64-unknown-linux-gnu/bin/ia64-unknown-linux-gnu-ld: section .data [0000000004ea0000 -> 0000000004f656e7] overlaps section .data.percpu [0000000004e90000 -> 0000000004ea0d17]
> > make: *** [.tmp_vmlinux1] Error 1
>
> I gather this is a regression from .26?
yes, more recent than that, actually. 2.6.27-rc1-mm1 was OK.
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: ia64 allmodconfig on current mainline
2008-08-12 22:58 ` Andrew Morton
@ 2008-08-13 0:21 ` Luck, Tony
2008-08-15 12:01 ` Robin Holt
0 siblings, 1 reply; 6+ messages in thread
From: Luck, Tony @ 2008-08-13 0:21 UTC (permalink / raw)
To: Andrew Morton, Rafael J. Wysocki
Cc: linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org
> /opt/crosstool/gcc-3.4.5-glibc-2.3.6/ia64-unknown-linux-gnu/bin/ia64-unknown-linux-gnu-ld: section .data [0000000004ea0000 -> 0000000004f656e7] overlaps section .data.percpu [0000000004e90000 -> 0000000004ea0d17]
This means there is too much DEFINE_PER_CPU() going on. Current
ia64 limit for the sum of all per cpu objects is 64K. For a
build using defconfig we seem to be close (56K/64K ... look for
the address of __per_cpu_end and see how close it is to the top
of the address space: 0xffffffffffffffff).
-Tony
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: ia64 allmodconfig on current mainline
2008-08-13 0:21 ` Luck, Tony
@ 2008-08-15 12:01 ` Robin Holt
2008-08-15 16:11 ` Luck, Tony
0 siblings, 1 reply; 6+ messages in thread
From: Robin Holt @ 2008-08-15 12:01 UTC (permalink / raw)
To: Luck, Tony
Cc: Andrew Morton, Rafael J. Wysocki, linux-ia64@vger.kernel.org,
linux-kernel@vger.kernel.org
On Tue, Aug 12, 2008 at 05:21:09PM -0700, Luck, Tony wrote:
> > /opt/crosstool/gcc-3.4.5-glibc-2.3.6/ia64-unknown-linux-gnu/bin/ia64-unknown-linux-gnu-ld: section .data [0000000004ea0000 -> 0000000004f656e7] overlaps section .data.percpu [0000000004e90000 -> 0000000004ea0d17]
>
> This means there is too much DEFINE_PER_CPU() going on. Current
> ia64 limit for the sum of all per cpu objects is 64K. For a
> build using defconfig we seem to be close (56K/64K ... look for
> the address of __per_cpu_end and see how close it is to the top
> of the address space: 0xffffffffffffffff).
Not sure if anybody is looking into this. Just tried a compile of generic
and allmod. The differences are not that significant with the exception
of per_cpu__kmem_cache_cpu at 0x28a0. A couple other low-hanging fruit
here are per_cpu__shadow_flush_counts and per_cpu__mmu_gathers each of
which takes approx 16k.
Thanks,
Robin
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: ia64 allmodconfig on current mainline
2008-08-15 12:01 ` Robin Holt
@ 2008-08-15 16:11 ` Luck, Tony
0 siblings, 0 replies; 6+ messages in thread
From: Luck, Tony @ 2008-08-15 16:11 UTC (permalink / raw)
To: Robin Holt
Cc: Andrew Morton, Rafael J. Wysocki, linux-ia64@vger.kernel.org,
linux-kernel@vger.kernel.org
> of per_cpu__kmem_cache_cpu at 0x28a0. A couple other low-hanging fruit
> here are per_cpu__shadow_flush_counts and per_cpu__mmu_gathers each of
> which takes approx 16k.
Ah. That perhaps explains the recent jump in usage that has put
allmodconfig over the limit. mmu_gathers is an int[NR_CPUS], and
NR_CPUS was just raised from 1024 to 4096
-Tony
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2008-08-15 16:11 UTC | newest]
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2008-08-12 22:06 ia64 allmodconfig on current mainline Andrew Morton
2008-08-12 22:22 ` Rafael J. Wysocki
2008-08-12 22:58 ` Andrew Morton
2008-08-13 0:21 ` Luck, Tony
2008-08-15 12:01 ` Robin Holt
2008-08-15 16:11 ` Luck, Tony
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