x86/ftrace: Use __pa_symbol instead of __pa on C visible symbols
authorAlexander Duyck <alexander.h.duyck@intel.com>
Fri, 16 Nov 2012 21:57:32 +0000 (13:57 -0800)
committerH. Peter Anvin <hpa@linux.intel.com>
Sat, 17 Nov 2012 00:42:09 +0000 (16:42 -0800)
commit217f155e9fc68bf2a6c58a7b47e0d1ce68d78818
treedec7fde874eb98b5520d936e38acd9b93d14c9ca
parentfc8d782677f163dee76427fdd8a92bebd2b50b23
x86/ftrace: Use __pa_symbol instead of __pa on C visible symbols

Instead of using __pa which is meant to be a general function for converting
virtual addresses to physical addresses we can use __pa_symbol which is the
preferred way of decoding kernel text virtual addresses to physical addresses.

In this case we are not directly converting C visible symbols however if we
know that the instruction pointer is somewhere between _text and _etext we
know that we are going to be translating an address form the kernel text
space.

Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Link: http://lkml.kernel.org/r/20121116215718.8521.24026.stgit@ahduyck-cp1.jf.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
arch/x86/kernel/ftrace.c