CVS commit: src/sys

["Andrew Doran" <ad%netbsd.org@localhost>]

Module Name:    src
Committed By:   ad
Date:           Sat Mar 14 18:08:40 UTC 2020

Modified Files:
        src/sys/arch/arm/arm32: bus_dma.c
        src/sys/arch/mips/mips: bus_dma.c
        src/sys/arch/x86/x86: bus_dma.c
        src/sys/compat/linux/common: linux_futex.c
        src/sys/dev/nvmm/x86: nvmm_x86_svm.c nvmm_x86_vmx.c
        src/sys/dev/pci/qat: qatvar.h
        src/sys/external/bsd/drm2/include/linux: sched.h
        src/sys/kern: kern_ktrace.c kern_synch.c subr_copy.c vfs_bio.c
        src/sys/miscfs/genfs: genfs_io.c
        src/sys/nfs: nfs_syscalls.c
        src/sys/rump/librump/rumpkern: scheduler.c
        src/sys/sys: sched.h
        src/sys/ufs/ext2fs: ext2fs_lookup.c
        src/sys/ufs/lfs: ulfs_dirhash.c ulfs_lookup.c
        src/sys/ufs/ufs: ufs_dirhash.c ufs_lookup.c
        src/sys/uvm: uvm_amap.c

Log Message:
- Hide the details of SPCF_SHOULDYIELD and related behind a couple of small
  functions: preempt_point() and preempt_needed().

- preempt(): if the LWP has exceeded its timeslice in kernel, strip it of
  any priority boost gained earlier from blocking.


To generate a diff of this commit:
cvs rdiff -u -r1.120 -r1.121 src/sys/arch/arm/arm32/bus_dma.c
cvs rdiff -u -r1.39 -r1.40 src/sys/arch/mips/mips/bus_dma.c
cvs rdiff -u -r1.81 -r1.82 src/sys/arch/x86/x86/bus_dma.c
cvs rdiff -u -r1.37 -r1.38 src/sys/compat/linux/common/linux_futex.c
cvs rdiff -u -r1.56 -r1.57 src/sys/dev/nvmm/x86/nvmm_x86_svm.c
cvs rdiff -u -r1.50 -r1.51 src/sys/dev/nvmm/x86/nvmm_x86_vmx.c
cvs rdiff -u -r1.1 -r1.2 src/sys/dev/pci/qat/qatvar.h
cvs rdiff -u -r1.13 -r1.14 src/sys/external/bsd/drm2/include/linux/sched.h
cvs rdiff -u -r1.175 -r1.176 src/sys/kern/kern_ktrace.c
cvs rdiff -u -r1.342 -r1.343 src/sys/kern/kern_synch.c
cvs rdiff -u -r1.12 -r1.13 src/sys/kern/subr_copy.c
cvs rdiff -u -r1.289 -r1.290 src/sys/kern/vfs_bio.c
cvs rdiff -u -r1.89 -r1.90 src/sys/miscfs/genfs/genfs_io.c
cvs rdiff -u -r1.161 -r1.162 src/sys/nfs/nfs_syscalls.c
cvs rdiff -u -r1.50 -r1.51 src/sys/rump/librump/rumpkern/scheduler.c
cvs rdiff -u -r1.87 -r1.88 src/sys/sys/sched.h
cvs rdiff -u -r1.88 -r1.89 src/sys/ufs/ext2fs/ext2fs_lookup.c
cvs rdiff -u -r1.17 -r1.18 src/sys/ufs/lfs/ulfs_dirhash.c
cvs rdiff -u -r1.41 -r1.42 src/sys/ufs/lfs/ulfs_lookup.c
cvs rdiff -u -r1.38 -r1.39 src/sys/ufs/ufs/ufs_dirhash.c
cvs rdiff -u -r1.150 -r1.151 src/sys/ufs/ufs/ufs_lookup.c
cvs rdiff -u -r1.116 -r1.117 src/sys/uvm/uvm_amap.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.