f503f6b22f
Directory lookups show up in profiling. The queue files are responsible for a large proportion of file-related system calls in udev coldplug. Instead of creating a file for each event, append their details to a log file. The file is periodically rebuilt (garbage-collected) to prevent it from growing indefinitely. This single queue file replaces both the queue directory and the uevent_seqnum file. On desktop systems the file tends not to grow beyond one page. So it should also save a small amount of memory in tmpfs. Tests on a running EeePC indicate average savings of 5% *udevd* cpu time as measured by oprofile. __link_path_walk is reduced from 1.5% to 1.3%. It is not completely clear where the rest of the gains come from. In tests running ~400 events, the queue file is rebuilt about 5 times. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
91 lines
1.3 KiB
Makefile
91 lines
1.3 KiB
Makefile
include $(top_srcdir)/Makefile.am.inc
|
|
|
|
SUBDIRS = \
|
|
lib
|
|
|
|
sbin_PROGRAMS = \
|
|
udevd \
|
|
udevadm
|
|
|
|
noinst_PROGRAMS = \
|
|
test-udev
|
|
|
|
common_ldadd =
|
|
|
|
common_files = \
|
|
udev.h \
|
|
udev-sysdeps.h \
|
|
udev-event.c \
|
|
udev-watch.c \
|
|
udev-node.c \
|
|
udev-rules.c \
|
|
udev-util.c \
|
|
lib/libudev.h \
|
|
lib/libudev-private.h \
|
|
lib/libudev.c \
|
|
lib/libudev-list.c \
|
|
lib/libudev-util.c \
|
|
lib/libudev-device.c \
|
|
lib/libudev-device-db-write.c \
|
|
lib/libudev-monitor.c \
|
|
lib/libudev-enumerate.c \
|
|
lib/libudev-queue.c \
|
|
lib/libudev-queue-export.c \
|
|
lib/libudev-ctrl.c
|
|
|
|
if USE_SELINUX
|
|
common_files += \
|
|
udev-selinux.c
|
|
common_ldadd += \
|
|
$(SELINUX_LIBS)
|
|
endif
|
|
|
|
udevd_SOURCES = \
|
|
$(common_files) \
|
|
udevd.c
|
|
|
|
udevd_LDADD = \
|
|
$(common_ldadd)
|
|
|
|
|
|
udevadm_SOURCES = \
|
|
$(common_files) \
|
|
udevadm.c \
|
|
udevadm-info.c \
|
|
udevadm-control.c \
|
|
udevadm-test.c \
|
|
udevadm-monitor.c \
|
|
udevadm-settle.c \
|
|
udevadm-trigger.c
|
|
|
|
udevadm_LDADD = \
|
|
$(common_ldadd)
|
|
|
|
|
|
test_udev_SOURCES = \
|
|
$(common_files) \
|
|
test-udev.c
|
|
|
|
test_udev_LDADD = \
|
|
$(common_ldadd)
|
|
|
|
|
|
dist_man_MANS = \
|
|
udev.7 \
|
|
udevadm.8 \
|
|
udevd.8
|
|
|
|
EXTRA_DIST = \
|
|
udev.xml \
|
|
udevadm.xml \
|
|
udevd.xml
|
|
|
|
%.7 %.8 : %.xml
|
|
$(XSLTPROC) -nonet http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl $<
|
|
|
|
MAINTAINERCLEANFILES = \
|
|
$(dist_man_MANS)
|
|
|
|
git-clean:
|
|
rm -f Makefile.in
|