(This is resend as vger dropped my previous attempt, sorry for the duplication)
Hi,
here are 2 patches for fixing the following bug occuring on IBM pSeries under
an RT kernel:
BUG: sleeping function called from invalid context swapper(1) at
kernel/rtmutex.c:739
in_atomic():1 [0002],
On Thu, 24 Jul 2008 08:17:38 +1000 Benjamin Herrenschmidt [EMAIL PROTECTED]
wrote:
The root cause of this bug lies in the fact that the XICS interrupt
controller
uses a radix tree for its reverse irq mapping and that we cannot allocate
the tree
nodes (even GFP_ATOMIC) with
Hi,
here are 2 patches for fixing the following bug occuring on IBM pSeries under
an RT kernel:
BUG: sleeping function called from invalid context swapper(1) at
kernel/rtmutex.c:739
in_atomic():1 [0002], irqs_disabled():1
Call Trace:
[c001e20f3340] [c0010370]
The root cause of this bug lies in the fact that the XICS interrupt
controller
uses a radix tree for its reverse irq mapping and that we cannot allocate the
tree
nodes (even GFP_ATOMIC) with preemption disabled.
Is that yet another caes of -rt changing some basic kernel semantics ?
