OK. I think I could come up with a fix. It mirrors what the x86 code does:
1. Let arch-dependent (arm) signal.h defines ARCH_RT_DELAYS_SIGNAL_SEND
(ifdef CONFIG_PREEMPT_RT_FULL)
2. This causes the vanilla force_sig_info() code to defer the actual
work until later, setting
the TIF_NOTIFY_RESU
I - very reproducibly - get this 'BUG' message
[ 6462.460032] Unhandled fault: external abort on non-linefetch (0x018)
at 0xb6fdd000
[ 6462.460042] BUG: sleeping function called from invalid context at
kernel/locking/rtmutex.c:905
[ 6462.460049] in_atomic(): 0, irqs_disabled(): 128, pid: 1488,
er is incremented
- the next hard IRQ calls note_interrupt() which checks
if the counter has changed since last time.
Just my 2 cents...
Thanks again
- Till
On 03/08/2013 08:41 PM, Thomas Gleixner wrote:
On Fri, 8 Mar 2013, Till Straumann wrote:
On 03/08/2013 05:12 PM, Thomas Gleixner wrote:
On F
On 03/08/2013 05:12 PM, Thomas Gleixner wrote:
On Fri, 8 Mar 2013, Till Straumann wrote:
1) I'm not sure adding the SPURIOUS_DEFERRED flag into
threads_handled_last is OK - what happens if the atomic_t counter
can hold more than 31 bits? In this case, when thread han
esult into the
spurious detector.
If one primary handler of a shared interrupt returns IRQ_HANDLED we
disable the deferred check of irq threads on the same line, as we have
found at least one device driver who cared.
Reported-by: Till Straumann
Signed-off-by: Thomas Gleixner
---
include/linux/
#x27;m sure there are many others affected by this problem although
they might not know it - after all, it was pretty hard to track down, for me too)
would certainly apreciate you to try to figure out a solution.
Regards, Till Straumann.
PS: cc questions/replies to me, as I am not on the mailin
Can somebody please tell me, who is currently maintaining
arch/ppc?
The link
http://www.ppc.kernel.org/
in the MAINTAINERS file is dead.
Regards, Till
(Please CC me, I'm not on this list)
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