Introduce a mechanism to allocate PCI IRQ on demand
Status from this message: Applied to pci/irq with the following changelogs for v4.3, thanks!
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- v3 Latest4 patches 5 repliesApplied
- v24 patches 4 repliesSuperseded
- v1 RFC4 patches 12 repliesSuperseded
Changes in v3 from the cover letter
1) Change the default pcibios_alloc_irq() to always return 0, as suggested by Bjorn.
2) Refine comments.
Patches in v3 Applied
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | PCI: Add hooks to allocate/free IRQ resources when binding/unbinding driverdrivers/ include/ | +22 | 0 replies | |
| 2/4 | PCI, x86: Allocate PCI IRQ on demand and free it when not used anymorearch/ arch/ arch/ +2 more | +16 | 0 replies | |
| 3/4 | PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managedarch/ arch/ drivers/ +1 more | +27 | 0 replies | |
| 4/4 | PCI, MSI: Free legacy PCI IRQ when enabling MSI/MSI-Xdrivers/ | +5 | 0 replies |
Reviews trailers per patch
All 4 patches have a Reviewed-by or Acked-by of their own; the series has one for all of them.
| Patch | Bjorn Helgaas | Thomas Gleixner |
|---|---|---|
| Series | A-b A-b A-b A-b | |
| 1/4 | A-b | |
| 2/4 | A-b | |
| 3/4 | A-b | |
| 4/4 | A-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [Patch v3 0/4] Introduce a mechanism to allocate PCI IRQ on demand
Hi Bjorn,
I have verified that this patch set could be applied to the
mainstream kernel without dependency on other patches, so could you please help to merge it?
This patch set introduces a mechanism to allocate PCI IRQ on demand and free it when not used anymore by hooking pci_device_probe() and pci_device_remove().
It will be used to track IOAPIC pin usage on x86 so we could support IOAPIC hot-removal.
The patch set passes Fengguang's 0day test suite.
V2->V3:
1) Change the default pcibios_alloc_irq() to always return 0, as suggested by Bjorn.
2) Refine comments.
V1->V2:
1) Refine pci_device_probe() to optimize for mainline code as suggested by Bjorn
2) Reorder patch set to put optional patch as the last (Patch 4)
Jiang Liu (4):
PCI: Add hooks to allocate/free IRQ resources when binding/unbinding
driver
PCI, x86: Allocate PCI IRQ on demand and free it when not used
anymore
PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managed PCI, MSI: Free legacy PCI IRQ when enabling MSI/MSI-X
arch/x86/include/asm/pci_x86.h | 2 -- arch/x86/pci/common.c | 20 +++++++++----------- arch/x86/pci/intel_mid_pci.c | 9 ++++++--- arch/x86/pci/irq.c | 23 ++++------------------- drivers/acpi/pci_irq.c | 17 ++++------------- drivers/pci/msi.c | 6 +++++- drivers/pci/pci-driver.c | 26 ++++++++++++++++++++------ include/linux/pci.h | 19 +++++++++++++++++++ 8 files changed, 67 insertions(+), 55 deletions(-)
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