Powerpc does not have an explicit check for the TIF_PERFMON_WORK thread-info
flag before calling __pfm_handle_work(), so add that check at the beginning
of __pfm_handle_work.
This is just a temporary fix. Obviously we'd like to fix the powerpc code to
make that check before calling __pfm_handle_work() to prevent the function
call overhead, but the call is made from assembly code, so it will take a
little while to figure out how to perform the check correctly. For now, if
you want to run perfmon on powerpc, you'll need to use this patch.
Signed-off-by: Kevin Corry <[EMAIL PROTECTED]>
Index: linux-2.6.20-arnd3-perfmon2/perfmon/perfmon.c
===================================================================
--- linux-2.6.20-arnd3-perfmon2.orig/perfmon/perfmon.c
+++ linux-2.6.20-arnd3-perfmon2/perfmon/perfmon.c
@@ -518,6 +518,9 @@ void __pfm_handle_work(struct pt_regs *r
unsigned long flags, dummy_flags;
int type, ret, can_release;
+ if (!test_thread_flag(TIF_PERFMON_WORK))
+ return;
+
if (!user_mode(regs))
return;
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