From: Alexander Beregalov <a.beregalov@xxxxxxxxx> Date: Wed, 12 Nov 2008 16:47:49 +0300 > Current -next does not build on sparc64: > LD .tmp_vmlinux1 > fs/built-in.o: In function `proc_pid_stack': > /home/alexb/linux-2.6/fs/proc/base.c:360: undefined reference to > `save_stack_trace_tsk' > > --- > > Add function save_stack_trace_tsk() on sparc64. > > > Signed-off-by: Alexander Beregalov <a.beregalov@xxxxxxxxx> This won't work as-is. The save_stack_trace() function starts with the actual frame-pointer register in the current cpu to start winding back the stack. So when 'tsk' is not 'current' nothing will be saved. That's what this bit of code is doing: __asm__ __volatile__( "mov %%fp, %0" : "=r" (ksp) ); fp = ksp + STACK_BIAS; Also, "stack_trace_flush()" should only be run when current == tsk. -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
