tree 0c2072970ccd0bbe36a7a80f135deae6ae6cd12a
parent 6ee1d93455384cef8a0426effe85da241b525b63
author Alex Smith <alex@alex-smith.me.uk> 1406122806 +0100
committer Ralf Baechle <ralf@linux-mips.org> 1406755623 +0200

MIPS: ptrace: Avoid smp_processor_id() when retrieving FPU IR

Whenever ptrace attempts to retrieve the FPU implementation register it
accesses it through current_cpu_data, which calls smp_processor_id().
Since the code may execute with preemption enabled, this can trigger
a warning. Fix this by using boot_cpu_data to get the IR instead.

Signed-off-by: Alex Smith <alex@alex-smith.me.uk>
Cc: <stable@vger.kernel.org> # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7449/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>