with TRACE_IRQFLAGS=y
From: Martin Schwidefsky schwidef...@de.ibm.com
If irq flags tracing is enabled the TRACE_IRQS_ON macros expands to
a function call which clobbers registers %r0-%r5. The macro is used
in the code path for single stepped system calls. The argument
registers %r2-%r6 need
On Thu, 7 Jan 2010 13:46:42 -0800 (PST)
Roland McGrath rol...@redhat.com wrote:
Clear the TIF_SINGLE_STEP bit in copy_thread. If the new process is
not auto-attached by the tracer it is wrong to delivere SIGTRAP to
the new process.
The change is right, but this log entry is confusing.
On Mon, 4 Jan 2010 19:14:12 +0100
Oleg Nesterov o...@redhat.com wrote:
On 01/04, Martin Schwidefsky wrote:
Subject: [PATCH] fix loading of PER control registers for utrace.
From: Martin Schwidefsky schwidef...@de.ibm.com
If the current task enables / disables PER tracing for itself
On Tue, 5 Jan 2010 16:36:33 +0100
Oleg Nesterov o...@redhat.com wrote:
On 01/05, Martin Schwidefsky wrote:
On Mon, 4 Jan 2010 13:11:47 -0800 (PST)
Roland McGrath rol...@redhat.com wrote:
This probably means that copy_process()-user_disable_single_step()
is not enough to clear
On Tue, 5 Jan 2010 16:47:25 +0100
Oleg Nesterov o...@redhat.com wrote:
On 01/05, Oleg Nesterov wrote:
Anyway. I modified the debugging patch a bit:
--- K/arch/s390/kernel/traps.c~ 2009-12-22 10:41:52.909174198 -0500
+++ K/arch/s390/kernel/traps.c 2010-01-05 09:49:19.541792379
the next reboot.
The PER control registers only get reloaded on task switch. Can you test
if this patch fixes your problem?
--
Subject: [PATCH] fix loading of PER control registers for utrace.
From: Martin Schwidefsky schwidef...@de.ibm.com
If the current task enables / disables PER tracing
