summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel/head_fsl_booke.S
diff options
context:
space:
mode:
authorKevin Hao <haokexin@gmail.com>2013-07-14 17:02:05 +0800
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-08-14 14:59:44 +1000
commit037f0eed57c3f35367ac32275e45f24e297549e9 (patch)
tree87dbec64efb721dae5fd8b0a5c2b634f882631dd /arch/powerpc/kernel/head_fsl_booke.S
parent662499d04b6bc73d0ecab0ab876bacd5bbe7d6a7 (diff)
downloadlinux-037f0eed57c3f35367ac32275e45f24e297549e9.tar.bz2
powerpc: Make flush_fp_to_thread() nop when CONFIG_PPC_FPU is disabled
In the current kernel, the function flush_fp_to_thread() is not dependent on CONFIG_PPC_FPU. So most invocations of this function is not wrapped by CONFIG_PPC_FPU. Even through we don't really save the FPRs to the thread struct if CONFIG_PPC_FPU is not enabled, but there does have some runtime overhead such as the check for tsk->thread.regs and preempt disable and enable. It really make no sense to do that. So make it a nop when CONFIG_PPC_FPU is disabled. Also remove the wrapped #ifdef CONFIG_PPC_FPU when invoking this function. Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/head_fsl_booke.S')
0 files changed, 0 insertions, 0 deletions