<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><br><br>Sent from my iPad</div><div><br>On Aug 30, 2018, at 6:11 PM, Hauke Mehrtens <<a href="mailto:hauke@hauke-m.de">hauke@hauke-m.de</a>> wrote:<br><br></div><blockquote type="cite"><div><span>Hi,</span><br><span></span><br><span>On 08/30/2018 09:29 AM, Ayaka wrote:</span><br><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>Sent from my iPad</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>On Aug 30, 2018, at 2:26 PM, Jonas Gorski <<a href="mailto:jonas.gorski@gmail.com">jonas.gorski@gmail.com</a>> wrote:</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>On 30 August 2018 at 04:31, ayaka <<a href="mailto:ayaka@soulik.info">ayaka@soulik.info</a>> wrote:</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>Both Marvell Armada 37x and 38x support NEON and VFPv3,</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>so we enable the NEON FPU with the SIMD aliases.</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>But the Armada XP doesn't, so this would break devices based on it</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>(like the WRT1900AC v1).</span><br></blockquote></blockquote><blockquote type="cite"><span>I was wonder whether Armada XP supports NEON. I am glad to know it doesn't.</span><br></blockquote><blockquote type="cite"><span>Anyway advice on separate the configure for WRT1900AC?</span><br></blockquote><blockquote type="cite"><span>With the help of neon I think we can get a better performance on crypt app</span><br></blockquote><blockquote type="cite"><span>locations such as OpenSSL and OpenVPN. It takes more benefit from the compatible.</span><br></blockquote><span></span><br><span>We can split this into two sub targets, but this needs additional</span><br><span>computation resources for our build bots.</span><br></div></blockquote>Maybe there would be three sub targets<div>I found ARMADA 370 only supports vfp-d16, but ARMADA 375 supports neon, I am not sure about VPS part. And the ARMADA 38x supports both neon and vfpv3 which we can use simd aliases simply.</div><div>The commit in the below links is not correct.</div><div><a href="https://github.com/lede-project/source/pull/1211#issuecomment-319286867">https://github.com/lede-project/source/pull/1211#issuecomment-319286867</a><br><blockquote type="cite"><div><span>Could you do some benchmarks on the performance differences with and</span><br><span>without this specific compiler optimization and share your results</span><br><span>please. This will allow us to judge if these performance improvements</span><br><span>are worth the extra load on the build bots.</span><br><span></span><br></div></blockquote>But I think you can still use the performance benchmark in the above links as an evidence.</div><div>I will try to write a simple make rules in the weekend.<br><blockquote type="cite"><div><span>You could try OpenSSL, OpenVPN and so on with the current build and then</span><br><span>with a build which activates ARM NEON and whatever this CPU supports in</span><br><span>addition.</span><br><span></span><br><span>Hauke</span><br><span></span><br><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>Regards</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span>Jonas</span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>Signed-off-by: ayaka <<a href="mailto:ayaka@soulik.info">ayaka@soulik.info</a>></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>---</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>include/target.mk | 1 +</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>target/linux/mvebu/cortexa9/target.mk | 2 +-</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>2 files changed, 2 insertions(+), 1 deletion(-)</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>diff --git a/include/target.mk b/include/target.mk</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>index 53d7436311..330eb175cc 100644</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>--- a/include/target.mk</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>+++ b/include/target.mk</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>@@ -201,6 +201,7 @@ ifeq ($(DUMP),1)</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span> CPU_CFLAGS_neon = -mfpu=neon</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span> CPU_CFLAGS_vfp = -mfpu=vfp</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span> CPU_CFLAGS_vfpv3 = -mfpu=vfpv3-d16</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>+ CPU_CFLAGS_simd = -mfpu=neon-vfpv3</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span> CPU_CFLAGS_neon-vfpv4 = -mfpu=neon-vfpv4</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span> endif</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span> endif</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>diff --git a/target/linux/mvebu/cortexa9/target.mk b/target/linux/mvebu/cortexa9/target.mk</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>index 2a75599bc9..9e6119bf6b 100644</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>--- a/target/linux/mvebu/cortexa9/target.mk</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>+++ b/target/linux/mvebu/cortexa9/target.mk</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>@@ -10,5 +10,5 @@ include $(TOPDIR)/rules.mk</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>ARCH:=arm</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>BOARDNAME:=Marvell Armada 37x/38x/XP</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>CPU_TYPE:=cortex-a9</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>-CPU_SUBTYPE:=vfpv3</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>+CPU_SUBTYPE:=simd</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>KERNELNAME:=zImage dtbs</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>--</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>2.14.4</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>_______________________________________________</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span>openwrt-devel mailing list</span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span><a href="mailto:openwrt-devel@lists.openwrt.org">openwrt-devel@lists.openwrt.org</a></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite"><span><a href="https://lists.openwrt.org/mailman/listinfo/openwrt-devel">https://lists.openwrt.org/mailman/listinfo/openwrt-devel</a></span><br></blockquote></blockquote></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>_______________________________________________</span><br></blockquote><blockquote type="cite"><span>openwrt-devel mailing list</span><br></blockquote><blockquote type="cite"><span><a href="mailto:openwrt-devel@lists.openwrt.org">openwrt-devel@lists.openwrt.org</a></span><br></blockquote><blockquote type="cite"><span><a href="https://lists.openwrt.org/mailman/listinfo/openwrt-devel">https://lists.openwrt.org/mailman/listinfo/openwrt-devel</a></span><br></blockquote><blockquote type="cite"><span></span><br></blockquote></div></blockquote></div></body></html>