From: Yong Zhang yong.zh...@windriver.com
1) call_function.lock used in smp_call_function_many() is just to protect
call_function.queue and data-refs, cpu_online_mask is outside of the
lock. And it's not necessary to protect cpu_online_mask,
because data-cpumask is pre-calculate and even
Hi Scott,
Thanks for the valuable comment raised before and we have updated the
patches accordingly. Please review the updated patch set and ACK if
they are good to you. We hope it can be applied in this window.
Leo
On Fri, May 11, 2012 at 7:53 PM, Zhao Chenhui
chenhui.z...@freescale.com
Version 2.06 of the POWER ISA introduced enhanced touch instructions,
allowing us to specify a number of attributes including the length of
a stream.
This patch adds a software stream for both loads and stores in the
POWER7 copy_tofrom_user loop. Since the setup is quite complicated
and we have
A special pread/pwrite asm stub that just copies
r7 to r0 could be used.
Would it be enough to do:
syscall_pread_pwrite:
mov 0,7
sc
blr
and handle the -ve - errno in C?
Huh? Won't fly, r0 is used for the system call number!
I was copying that from r7!
Actually I
On Tue, 2012-05-29 at 09:28 +0100, David Laight wrote:
A special pread/pwrite asm stub that just copies
r7 to r0 could be used.
Would it be enough to do:
syscall_pread_pwrite:
mov 0,7
sc
blr
and handle the -ve - errno in C?
Huh? Won't fly, r0 is used for the
In system call exit we currently clear RI and EE separately. An
mtmsrd is a slow operation and we can save cycles by doing it all
in one go.
This does complicate things a bit - we have to be careful to restore
RI if we branch out before returning to userspace.
On a POWER7 with virtual cputime
I cannot make simple break points using BDI2000 work in 3.3, abatro suggests
that it
depends on MSR[DE] is cleared by the kernel. With the emulator I can see that
MSR[DE] is off quite often by just stopping at random times and looking at MSR
so
it seems like the kernel is turning MSR[DE] off
Hi Kumar,
There is no comment for these patches so far. Do you think these patches can be
merged?
We really want these patches to be merged in this merge window.
Thanks.
Best Regards,
Chenhui
-Original Message-
From: Zhao Chenhui-B35336
Sent: Friday, May 25, 2012 3:09 PM
To: Wood
On 05/26/2012 01:53 AM, Anthony Foiani wrote:
Li Yang-R58472 r58...@freescale.com writes:
Thanks for bringing [CONFIG_MPC8315_DS] up again. Looks like we do
have a problem here.
My impression is that the simplest fix is Adrian's patch, which simply
keys off CONFIG_MPC831x_RDB. It's not
On 05/29/2012 06:20 AM, Anton Blanchard wrote:
In system call exit we currently clear RI and EE separately. An
mtmsrd is a slow operation and we can save cycles by doing it all
in one go.
This does complicate things a bit - we have to be careful to restore
RI if we branch out before
Bob Cochran p...@mindchasers.com wrote on 2012/05/29 20:13:21:
On 05/29/2012 08:00 AM, Joakim Tjernlund wrote:
I cannot make simple break points using BDI2000 work in 3.3, abatro
suggests that it
depends on MSR[DE] is cleared by the kernel. With the emulator I can see
that
MSR[DE]
On 05/29/2012 08:00 AM, Joakim Tjernlund wrote:
I cannot make simple break points using BDI2000 work in 3.3, abatro suggests
that it
depends on MSR[DE] is cleared by the kernel. With the emulator I can see that
MSR[DE] is off quite often by just stopping at random times and looking at MSR
so
Dear Bob,
In message 4fc511c1.4050...@mindchasers.com you wrote:
I debug using Freescale CodeWarrior and a USB tap, which also rely on
MSR[DE] being set. I develop from the mainline have a patch set that
I just recently re-tweaked to support kernel debugging.
If you want, I'll send you
Scott Wood scottw...@freescale.com writes:
CONFIG_MPC831x_RDB doesn't mean that you're running on such a board,
only that the kernel supports those boards. It should be a runtime
test.
Point taken.
If that SATA check is CPU/SOC-based, then it should be easy enough to
test. The cpuinfo for
Hi Scott,
syscall_exit_work:
+ mtmsrd r10,1 /* Restore RI */
That mtmsrd needs an #ifdef CONFIG_PPC_BOOK3S
Thanks!
Anton
--
In system call exit we currently clear RI and EE separately. An
mtmsrd is a slow operation and we can save cycles by doing it all
in one go.
This
On 05/29/2012 05:07 PM, Anthony Foiani wrote:
Scott Wood scottw...@freescale.com writes:
CONFIG_MPC831x_RDB doesn't mean that you're running on such a board,
only that the kernel supports those boards. It should be a runtime
test.
Point taken.
If that SATA check is CPU/SOC-based, then
Subsequent patches will add more VMX library functions and it makes
sense to keep all the c-code helper functions in the one file.
Signed-off-by: Anton Blanchard an...@samba.org
---
Index: linux-build/arch/powerpc/lib/Makefile
===
Implement a POWER7 optimised copy_page using VMX and enhanced
prefetch instructions. We use enhanced prefetch hints to prefetch
both the load and store side. We copy a cacheline at a time and
fall back to regular loads and stores if we are unable to use VMX
(eg we are in an interrupt).
The
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