Tong Li 23332c2e9d [PATCH] OProfile: fixed x86_64 incorrect kernel call graphs ... Fix the problem in kernel 2.6.15.1 (and early versions) that OProfile on x86_64 does not correctly collect the stack traces for kernel functions. The original code in valid_kernel_stack() in arch/i386/oprofile/backtrace.c assumes that the frame pointer (headaddr) should be greater than stack (i.e., regs). This assumption is wrong for x86_64 because NMIs in x86_64 use a seperate stack different from the kernel stack. Therefore, the variable stack now points to some location on the NMI stack, which turns out to be at a higher address than the frame pointer (headaddr) on the kernel stack. The correct comparison here should be between headaddr and regs->rsp for x86_64. Signed-off-by: Tong Li <tong.n.li@intel.com> Cc: John Levon <levon@movementarian.org> Cc: Philippe Elie <phil.el@wanadoo.fr> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-02-03 08:32:04 -08:00
..
backtrace.c	[PATCH] OProfile: fixed x86_64 incorrect kernel call graphs	2006-02-03 08:32:04 -08:00
init.c
Kconfig	[PATCH] Move Kprobes and Oprofile to "Instrumentation Support" menu	2005-11-07 07:53:35 -08:00
Makefile
nmi_int.c
nmi_timer_int.c
op_counter.h
op_model_athlon.c
op_model_p4.c
op_model_ppro.c
op_x86_model.h