Luke Nelson c648c9c742 bpf, arm: Optimize ALU ARSH K using asr immediate instruction ... This patch adds an optimization that uses the asr immediate instruction for BPF_ALU BPF_ARSH BPF_K, rather than loading the immediate to a temporary register. This is similar to existing code for handling BPF_ALU BPF_{LSH,RSH} BPF_K. This optimization saves two instructions and is more consistent with LSH and RSH. Example of the code generated for BPF_ALU32_IMM(BPF_ARSH, BPF_REG_0, 5) before the optimization: 2c: mov r8, #5 30: mov r9, #0 34: asr r0, r0, r8 and after optimization: 2c: asr r0, r0, #5 Tested on QEMU using lib/test_bpf and test_verifier. Co-developed-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Luke Nelson <luke.r.nels@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200501020210.32294-3-luke.r.nels@gmail.com		2020-05-04 17:04:42 +02:00
..
boot	ARM: dts: qcom: ipq4019: add MDIO node	2020-04-30 12:11:14 -07:00
common	ARM: sa1111: Fix irq_retrigger callback return value	2020-03-16 15:48:54 +00:00
configs	ARM: defconfig updates	2020-04-03 15:15:10 -07:00
crypto	SPDX patches for 5.7-rc1.	2020-04-03 13:12:26 -07:00
include	arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>	2020-04-23 10:50:26 +09:00
kernel	SPDX patches for 5.7-rc1.	2020-04-03 13:12:26 -07:00
lib	ARM: 8958/1: rename missed uaccess .fixup section	2020-02-21 17:03:21 +00:00
mach-actions
mach-alpine
mach-artpec
mach-asm9260
mach-aspeed
mach-at91	ARM: SoC updates	2020-04-03 15:02:35 -07:00
mach-axxia
mach-bcm	ARM: bcm: Drop unneeded select of PCI_DOMAINS_GENERIC, HAVE_SMP, TIMER_OF	2020-03-10 10:58:26 -07:00
mach-berlin
mach-clps711x
mach-cns3xxx	ARM: cns3xxx: replace setup_irq() by request_irq()	2020-03-27 14:11:47 +01:00
mach-davinci	ARM: SoC: late updates	2020-02-08 14:17:27 -08:00
mach-digicolor
mach-dove	arm: mach-dove: Mark dove_io_desc as __maybe_unused	2020-03-13 21:44:50 +01:00
mach-ebsa110	ARM: 8964/1: ebsa110: replace setup_irq() by request_irq()	2020-03-19 09:27:39 +00:00
mach-efm32
mach-ep93xx	ARM: ep93xx: Replace setup_irq() by request_irq()	2020-03-27 14:11:42 +01:00
mach-exynos	arm: Unplug KVM from the build system	2020-03-24 10:55:50 +00:00
mach-footbridge	ARM: 8965/2: footbridge: replace setup_irq() by request_irq()	2020-03-19 09:27:40 +00:00
mach-gemini
mach-highbank
mach-hisi
mach-imx	ARM: imx: provide v7_cpu_resume() only on ARM_CPU_SUSPEND=y	2020-04-17 16:29:59 +02:00
mach-integrator	ARM: integrator: impd1: Use GPIO_LOOKUP() helper macro	2020-03-26 22:05:12 +01:00
mach-iop32x	ARM: iop32x: replace setup_irq() by request_irq()	2020-03-27 14:10:52 +01:00
mach-ixp4xx
mach-keystone
mach-lpc18xx
mach-lpc32xx
mach-mediatek
mach-meson	ARM: meson: Drop unneeded select of COMMON_CLK	2020-02-29 08:16:20 -08:00
mach-milbeaut
mach-mmp	ARM: mmp: replace setup_irq() by request_irq()	2020-03-27 14:11:50 +01:00
mach-moxart
mach-mv78xx0
mach-mvebu
mach-mxs
mach-nomadik
mach-npcm	ARM: npcm: Bring back GPIOLIB support	2020-02-09 03:44:51 -08:00
mach-nspire
mach-omap1	ARM: SoC updates	2020-04-03 15:02:35 -07:00
mach-omap2	change email address for Pali Rohár	2020-04-10 15:36:22 -07:00
mach-orion5x	ARM: orion5x: ts78xx: Remove unneeded variable ret	2020-03-08 12:42:07 +01:00
mach-oxnas
mach-picoxcell
mach-prima2
mach-pxa	backlight: corgi: Convert to use GPIO descriptors	2020-03-25 09:30:46 +00:00
mach-qcom	ARM: qcom: Add support for IPQ40xx	2020-03-31 21:03:27 +02:00
mach-rda
mach-realview
mach-rockchip
mach-rpc	ARM: 8966/1: rpc: replace setup_irq() by request_irq()	2020-03-19 09:27:42 +00:00
mach-s3c24xx	backlight: pwm_bl: Switch to full GPIO descriptor	2020-03-18 15:05:57 +00:00
mach-s3c64xx	backlight: pwm_bl: Switch to full GPIO descriptor	2020-03-18 15:05:57 +00:00
mach-s5pv210
mach-sa1100
mach-shmobile	ARM: shmobile: Replace <linux/clk-provider.h> by <linux/of_clk.h>	2020-02-17 11:39:44 +01:00
mach-socfpga
mach-spear	ARM: spear: replace setup_irq() by request_irq()	2020-03-27 14:11:45 +01:00
mach-sti
mach-stm32
mach-sunxi	ARM: sunxi: Replace <linux/clk-provider.h> by <linux/of_clk.h>	2020-02-12 18:15:39 +01:00
mach-tango
mach-tegra	cpuidle: tegra: Squash Tegra114 driver into the common driver	2020-03-13 11:32:01 +01:00
mach-u300
mach-uniphier
mach-ux500
mach-versatile
mach-vexpress
mach-vt8500
mach-zx
mach-zynq	ARM: zynq: Replace <linux/clk-provider.h> by <linux/of_clk.h>	2020-02-13 07:26:36 +01:00
mm	mm/special: create generic fallbacks for pte_special() and pte_mkspecial()	2020-04-10 15:36:21 -07:00
net	bpf, arm: Optimize ALU ARSH K using asr immediate instruction	2020-05-04 17:04:42 +02:00
nwfpe
oprofile
plat-omap
plat-orion	ARM: orion: replace setup_irq() by request_irq()	2020-03-13 21:37:15 +01:00
plat-pxa
plat-samsung
plat-versatile
probes
tools	threads-v5.6	2020-01-29 19:38:34 -08:00
vdso	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
vfp
xen	arm/xen: make _xen_start_info static	2020-04-17 07:45:12 +02:00
Kconfig	ARM:	2020-04-02 15:13:15 -07:00
Kconfig-nommu
Kconfig.debug	ARM: debug: stm32: add UART early console support for STM32MP1	2020-03-13 17:05:07 +01:00
Makefile	ARM: SoC updates	2020-04-03 15:02:35 -07:00