Date: Sun, 2 Aug 2009 14:28:40 +0000 (UTC) From: Attilio Rao <attilio@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/aac aac.c src/sys/dev/acpica acpi.c acpi_battery.c acpi_cpu.c acpi_dock.c acpi_thermal.c src/sys/dev/adb adb_bus.c src/sys/dev/amdtemp amdtemp.c src/sys/dev/amr amr.c src/sys/dev/ata ata-all.c src/sys/dev/atkbdc ... Message-ID: <200908021429.n72ETAbS009999@repoman.freebsd.org>
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attilio 2009-08-02 14:28:40 UTC
FreeBSD src repository
Modified files:
sys/dev/aac aac.c
sys/dev/acpica acpi.c acpi_battery.c acpi_cpu.c
acpi_dock.c acpi_thermal.c
sys/dev/adb adb_bus.c
sys/dev/amdtemp amdtemp.c
sys/dev/amr amr.c
sys/dev/ata ata-all.c
sys/dev/atkbdc psm.c
sys/dev/bktr bktr_os.c
sys/dev/drm drm_drv.c
sys/dev/ips ips_pci.c
sys/dev/mfi mfi.c
sys/dev/mlx mlx.c
sys/dev/mmc mmc.c
sys/dev/pccbb pccbb.c
sys/dev/pst pst-iop.c
sys/dev/rp rp.c
sys/dev/sound/pci/hda hdac.c
sys/dev/twe twe.c
sys/dev/usb usb_compat_linux.c usb_dev.c
usb_handle_request.c usb_hub.c
sys/dev/usb/controller usb_controller.c
sys/dev/usb/input ukbd.c
sys/dev/usb/net usb_ethernet.c
sys/dev/usb/wlan if_upgt.c
sys/dev/xen/blkback blkback.c
sys/dev/xen/netback netback.c
sys/i386/acpica acpi_machdep.c
sys/i386/bios smapi.c smbios.c vpd.c
sys/kern subr_bus.c
sys/pc98/cbus fdc.c
sys/sys bus.h param.h
sys/xen/xenbus xenbus_probe.c
Log:
SVN rev 196037 on 2009-08-02 14:28:40Z by attilio
Make the newbus subsystem Giant free by adding the new newbus sxlock.
The newbus lock is responsible for protecting newbus internIal structures,
device states and devclass flags. It is necessary to hold it when all
such datas are accessed. For the other operations, softc locking should
ensure enough protection to avoid races.
Newbus lock is automatically held when virtual operations on the device
and bus are invoked when loading the driver or when the suspend/resume
take place. For other 'spourious' operations trying to access/modify
the newbus topology, newbus lock needs to be automatically acquired and
dropped.
For the moment Giant is also acquired in some key point (modules subsystem)
in order to avoid problems before the 8.0 release as module handlers could
make assumptions about it. This Giant locking should go just after
the release happens.
Please keep in mind that the public interface can be expanded in order
to provide more support, if there are really necessities at some point
and also some bugs could arise as long as the patch needs a bit of
further testing.
Bump __FreeBSD_version in order to reflect the newbus lock introduction.
Reviewed by: ed, hps, jhb, imp, mav, scottl
No answer by: ariff, thompsa, yongari
Tested by: pho,
G. Trematerra <giovanni dot trematerra at gmail dot com>,
Brandon Gooch <jamesbrandongooch at gmail dot com>
Sponsored by: Yahoo! Incorporated
Approved by: re (ksmith)
Revision Changes Path
1.143 +4 -4 src/sys/dev/aac/aac.c
1.265 +2 -12 src/sys/dev/acpica/acpi.c
1.29 +15 -0 src/sys/dev/acpica/acpi_battery.c
1.79 +2 -0 src/sys/dev/acpica/acpi_cpu.c
1.8 +4 -4 src/sys/dev/acpica/acpi_dock.c
1.72 +3 -0 src/sys/dev/acpica/acpi_thermal.c
1.5 +2 -0 src/sys/dev/adb/adb_bus.c
1.4 +2 -0 src/sys/dev/amdtemp/amdtemp.c
1.90 +21 -2 src/sys/dev/amr/amr.c
1.308 +19 -15 src/sys/dev/ata/ata-all.c
1.104 +4 -0 src/sys/dev/atkbdc/psm.c
1.58 +9 -2 src/sys/dev/bktr/bktr_os.c
1.28 +8 -0 src/sys/dev/drm/drm_drv.c
1.16 +2 -0 src/sys/dev/ips/ips_pci.c
1.51 +13 -7 src/sys/dev/mfi/mfi.c
1.59 +2 -0 src/sys/dev/mlx/mlx.c
1.37 +2 -0 src/sys/dev/mmc/mmc.c
1.182 +2 -9 src/sys/dev/pccbb/pccbb.c
1.9 +2 -0 src/sys/dev/pst/pst-iop.c
1.77 +4 -0 src/sys/dev/rp/rp.c
1.109 +2 -0 src/sys/dev/sound/pci/hda/hdac.c
1.27 +6 -0 src/sys/dev/twe/twe.c
1.22 +9 -21 src/sys/dev/usb/controller/usb_controller.c
1.16 +6 -7 src/sys/dev/usb/input/ukbd.c
1.8 +7 -4 src/sys/dev/usb/net/usb_ethernet.c
1.17 +7 -20 src/sys/dev/usb/usb_compat_linux.c
1.31 +6 -0 src/sys/dev/usb/usb_dev.c
1.15 +6 -6 src/sys/dev/usb/usb_handle_request.c
1.28 +14 -5 src/sys/dev/usb/usb_hub.c
1.11 +2 -2 src/sys/dev/usb/wlan/if_upgt.c
1.4 +2 -2 src/sys/dev/xen/blkback/blkback.c
1.3 +2 -2 src/sys/dev/xen/netback/netback.c
1.44 +6 -0 src/sys/i386/acpica/acpi_machdep.c
1.17 +2 -0 src/sys/i386/bios/smapi.c
1.7 +2 -0 src/sys/i386/bios/smbios.c
1.7 +2 -0 src/sys/i386/bios/vpd.c
1.225 +82 -7 src/sys/kern/subr_bus.c
1.171 +6 -0 src/sys/pc98/cbus/fdc.c
1.85 +8 -0 src/sys/sys/bus.h
1.433 +1 -1 src/sys/sys/param.h
1.8 +4 -0 src/sys/xen/xenbus/xenbus_probe.c
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