Comments or acks, anyone? - Steve On 4/11/2019 10:20 AM, Steve Sistare wrote: > Perform module install actions only if the object area module is newer than > install area module, and only announce the updated modules. To do this, the > <moddir>/kernel directory must be preserved across invocations of make, so > it must be checked for stale modules, which can occur after changing config > options. Hence, remove modules from this directory that are not present > in modules.order. > > These changes save 10's of seconds for a single CPU build, save a few > seconds for a parallel build, and reduce output clutter for an incremental > build. Example: > > % touch drivers/virtio/virtio_ring.c > % make modules modules_install > DESCEND objtool > CALL scripts/atomic/check-atomics.sh > CALL scripts/checksyscalls.sh > CC [M] drivers/virtio/virtio_ring.o > Building modules, stage 2. > MODPOST 2592 modules > LD [M] drivers/virtio/virtio_ring.ko > INSTALL drivers/virtio/virtio_ring.ko > DEPMOD 5.1.0-rc3 > > Patch 1 fixes a legacy race bug in parallel make. > Patch 2 installs only modified modules. > Patch 3 removes stale modules. > > Steve Sistare (3): > kbuild: serialize modules and modules_install > kbuild: optimize modules_install target > kbuild: remove stale modules from install area > > Makefile | 26 +++++++++++++++++++++----- > scripts/Makefile.modinst | 30 +++++++++++++++++++++++------- > 2 files changed, 44 insertions(+), 12 deletions(-) >
