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authorPaul Burton <paul.burton@imgtec.com>2015-08-06 01:42:37 +0300
committerRalf Baechle <ralf@linux-mips.org>2015-09-30 19:15:51 +0300
commita5b0f6db0e6cf6224e50f6585e9c8f0c2d38a8f8 (patch)
tree9f7a9eabc5800785e186fec920cb5a2cd3068cc3 /arch
parent1e5fb282f8eda889776ee83f9214d5df9edaa26d (diff)
downloadlinux-a5b0f6db0e6cf6224e50f6585e9c8f0c2d38a8f8.tar.xz
MIPS: CPS: Don't include MT code in non-MT kernels.
The MT-specific code in mips_cps_boot_vpes can safely be omitted from kernels which don't support MT, with the default VPE==0 case being used as it would be after the has_mt (Config3.MT) check failed at runtime. Discarding the code entirely will save us a few bytes & allow cleaner handling of MT ASE instructions by later patches. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: <stable@vger.kernel.org> # 3.16+ Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/10866/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/kernel/cps-vec.S2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S
index fa159aab252c..57642f56dffb 100644
--- a/arch/mips/kernel/cps-vec.S
+++ b/arch/mips/kernel/cps-vec.S
@@ -311,6 +311,7 @@ LEAF(mips_cps_boot_vpes)
/* Calculate this VPEs ID. If the core doesn't support MT use 0 */
li t9, 0
+#ifdef CONFIG_MIPS_MT
has_mt ta2, 1f
/* Find the number of VPEs present in the core */
@@ -330,6 +331,7 @@ LEAF(mips_cps_boot_vpes)
/* Retrieve the VPE ID from EBase.CPUNum */
mfc0 t9, $15, 1
and t9, t9, t1
+#endif
1: /* Calculate a pointer to this VPEs struct vpe_boot_config */
li t1, VPEBOOTCFG_SIZE