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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-19 12:30:17 -0800
committerBjorn Helgaas <bhelgaas@google.com>2013-12-19 15:14:52 -0700
commit1c51b50c2995f543d145d3bce78029ac9f8ca6b3 (patch)
treee45ceda96d94d1141919488165eed037e770e92c /Documentation/ABI
parent6ce4eac1f600b34f2f7f58f9cd8f0503d79e42ae (diff)
downloadlinux-1c51b50c2995f543d145d3bce78029ac9f8ca6b3.tar.bz2
PCI/MSI: Export MSI mode using attributes, not kobjects
The PCI MSI sysfs code is a mess with kobjects for things that don't really need to be kobjects. This patch creates attributes dynamically for the MSI interrupts instead of using kobjects. Note, this removes a directory from sysfs. Old MSI kobjects: pci_device └── msi_irqs    └── 40    └── mode New MSI attributes: pci_device └── msi_irqs    └── 40 As there was only one file "mode" with the kobject model, the interrupt number is now a file that returns the "mode" of the interrupt (msi vs. msix). Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Neil Horman <nhorman@tuxdriver.com>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-pci11
1 files changed, 4 insertions, 7 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci b/Documentation/ABI/testing/sysfs-bus-pci
index 5210a51c90fd..a3c5a6685036 100644
--- a/Documentation/ABI/testing/sysfs-bus-pci
+++ b/Documentation/ABI/testing/sysfs-bus-pci
@@ -70,18 +70,15 @@ Date: September, 2011
Contact: Neil Horman <nhorman@tuxdriver.com>
Description:
The /sys/devices/.../msi_irqs directory contains a variable set
- of sub-directories, with each sub-directory being named after a
- corresponding msi irq vector allocated to that device. Each
- numbered sub-directory N contains attributes of that irq.
- Note that this directory is not created for device drivers which
- do not support msi irqs
+ of files, with each file being named after a corresponding msi
+ irq vector allocated to that device.
-What: /sys/bus/pci/devices/.../msi_irqs/<N>/mode
+What: /sys/bus/pci/devices/.../msi_irqs/<N>
Date: September 2011
Contact: Neil Horman <nhorman@tuxdriver.com>
Description:
This attribute indicates the mode that the irq vector named by
- the parent directory is in (msi vs. msix)
+ the file is in (msi vs. msix)
What: /sys/bus/pci/devices/.../remove
Date: January 2009