Jisheng Zhang 648321fa0d riscv: mm: try VMA lock-based page fault handling first ... Attempt VMA lock-based page fault handling first, and fall back to the existing mmap_lock-based handling if that fails. A simple running the ebizzy benchmark on Lichee Pi 4A shows that PER_VMA_LOCK can improve the ebizzy benchmark by about 32.68%. In theory, the more CPUs, the bigger improvement, but I don't have any HW platform which has more than 4 CPUs. This is the riscv variant of "x86/mm: try VMA lock-based page fault handling first". Signed-off-by: Jisheng Zhang <jszhang@kernel.org> Reviewed-by: Guo Ren <guoren@kernel.org> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Link: https://lore.kernel.org/r/20230523165942.2630-1-jszhang@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2023-06-20 08:10:13 -07:00
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boot	RISC-V Patches for the 6.4 Merge Window, Part 1	2023-04-28 16:55:39 -07:00
configs	RISC-V: Enable ACPI in defconfig	2023-06-01 08:45:14 -07:00
errata	RISC-V: fix sifive and thead section mismatches in errata	2023-04-29 13:18:19 -07:00
include	Merge patch series "RISC-V: Export Zba, Zbb to usermode via hwprobe"	2023-06-19 14:34:40 -07:00
kernel	Merge patch series "RISC-V: Export Zba, Zbb to usermode via hwprobe"	2023-06-19 14:34:40 -07:00
kvm	riscv: Add prctl controls for userspace vector management	2023-06-08 07:16:53 -07:00
lib	riscv: Allow to downgrade paging mode from the command line	2023-04-26 07:30:52 -07:00
mm	riscv: mm: try VMA lock-based page fault handling first	2023-06-20 08:10:13 -07:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-03-09 22:22:11 -08:00
purgatory	purgatory: fix disabling debug info	2023-04-08 19:36:53 +09:00
tools	riscv: Check relocations at compile time	2023-04-19 07:46:32 -07:00
Kbuild	riscv: move errata/ and kvm/ builds to arch/riscv/Kbuild	2022-06-01 22:26:32 -07:00
Kconfig	riscv: mm: try VMA lock-based page fault handling first	2023-06-20 08:10:13 -07:00
Kconfig.debug	RISC-V: Remove EARLY_PRINTK support	2018-12-17 10:23:46 -08:00
Kconfig.errata	Merge patch series "RISC-V: Fixes for riscv_has_extension[un]likely()'s alternative dependency"	2023-03-29 12:26:38 -07:00
Kconfig.socs	RISC-V Patches for the 6.3 Merge Window, Part 1	2023-02-25 11:14:08 -08:00
Makefile	riscv: Enable Vector code to be built	2023-06-08 07:16:56 -07:00
Makefile.postlink	riscv: Use --emit-relocs in order to move .rela.dyn in init	2023-04-19 07:46:33 -07:00