On Mon, Feb 07, 2011 at 04:13:37PM +1100, Benjamin Herrenschmidt wrote:

On Mon, 2011-02-07 at 10:22 +0530, K.Prasad wrote:

quoted

Okay! Another wrapper of "#ifndef CONFIG_HAVE_HW_BREAKPOINT" around
the
definition of 'set_debug_reg_defaults'.

Can you send a patch ?

Pasted below.
 

quoted

There's indeed too much sprinkling of #ifdefs in the code, but most of
it would go away when the BookE code also uses the generic
hw-breakpoint interfaces. 

What's your status for those patches ?

The last I checked, I knew that the version of patchset I sent out
(linuxppc-dev message id: 20100629165152.GA8586@in.ibm.com)
didn't actually work when tested on hardware (it was just compile tested
before sending). It needs substantial amount of time to get it in shape,
which I'm unfortunately lacking now (plenty of priority items in hand that
needs dedicated attention).

Thanks,
K.Prasad

Fix the error in spelling the config option for hw-breakpoints and fix
the build issue that follows.

Signed-off by: K.Prasad [off-list ref]
---
 arch/powerpc/kernel/process.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

Index: linux-2.6.set_hwdebug/arch/powerpc/kernel/process.c
===================================================================

--- linux-2.6.set_hwdebug.orig/arch/powerpc/kernel/process.c
+++ linux-2.6.set_hwdebug/arch/powerpc/kernel/process.c

@@ -353,6 +353,7 @@ static void switch_booke_debug_regs(stru
 			prime_debug_regs(new_thread);
 }
 #else	/* !CONFIG_PPC_ADV_DEBUG_REGS */
+#ifndef CONFIG_HAVE_HW_BREAKPOINT
 static void set_debug_reg_defaults(struct thread_struct *thread)
 {
 	if (thread->dabr) {

@@ -360,6 +361,7 @@ static void set_debug_reg_defaults(struc
 		set_dabr(0);
 	}
 }
+#endif /* !CONFIG_HAVE_HW_BREAKPOINT */
 #endif	/* CONFIG_PPC_ADV_DEBUG_REGS */
 
 int set_dabr(unsigned long dabr)

@@ -670,11 +672,11 @@ void flush_thread(void)
 {
 	discard_lazy_cpu_state();
 
-#ifdef CONFIG_HAVE_HW_BREAKPOINTS
+#ifdef CONFIG_HAVE_HW_BREAKPOINT
 	flush_ptrace_hw_breakpoint(current);
-#else /* CONFIG_HAVE_HW_BREAKPOINTS */
+#else /* CONFIG_HAVE_HW_BREAKPOINT */
 	set_debug_reg_defaults(&current->thread);
-#endif /* CONFIG_HAVE_HW_BREAKPOINTS */
+#endif /* CONFIG_HAVE_HW_BREAKPOINT */
 }
 
 void