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| author | Yinghai Lu <yinghai@kernel.org> | 2011-05-12 17:11:39 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-05-21 12:17:12 -0700 |
| commit | b9d320fcb6259baffaeaf93a5fce252cd09333d6 (patch) | |
| tree | c5372d704719ff2c6f7b8d2b6bb3c04901cde242 /Documentation | |
| parent | da7822e5ad71ec9b745b412639f1e5e0ba795a20 (diff) | |
| download | linux-b9d320fcb6259baffaeaf93a5fce252cd09333d6.tar.gz linux-b9d320fcb6259baffaeaf93a5fce252cd09333d6.tar.bz2 linux-b9d320fcb6259baffaeaf93a5fce252cd09333d6.zip | |
PCI: add rescan to /sys/.../pci_bus/.../
After remove the device from /sys, we have to rescan all or
find out the bridge and access /sys../device/rescan there.
this patch add /sys/.../pci_bus/.../rescan. So user can rescan more easy.
that is more clean and easy to understand.
like after remove 0000:c4:00.0, you can rescan 0000:c4 directly.
-v2: According to Jesse, use function instead of exposing attr, so could hide
#ifdef in header file.
also add code to remove rescan file in remove path.
-v3: GregKH pointed out that we should use dev_attrs to avoid racing.
So add pcibus_attrs and make it to be member of pcibus_attrs.
-v4: Change name to pcibus_dev_attrs according to GregKH
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci index 36bf454ba855..349ecf26ce10 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci +++ b/Documentation/ABI/testing/sysfs-bus-pci @@ -74,6 +74,15 @@ Description: hot-remove the PCI device and any of its children. Depends on CONFIG_HOTPLUG. +What: /sys/bus/pci/devices/.../pci_bus/.../rescan +Date: May 2011 +Contact: Linux PCI developers <linux-pci@vger.kernel.org> +Description: + Writing a non-zero value to this attribute will + force a rescan of the bus and all child buses, + and re-discover devices removed earlier from this + part of the device tree. Depends on CONFIG_HOTPLUG. + What: /sys/bus/pci/devices/.../rescan Date: January 2009 Contact: Linux PCI developers <linux-pci@vger.kernel.org> |