| Message ID | alpine.LFD.2.11.1405180401450.13036@localhost (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Sun, May 18, 2014 at 04:05:06AM -0400, Robert P. J. Day wrote: > > Simplify some of the PCI-related Kconfig files by replacing numerous > explicit dependencies with "if" wrappers" > > * PCI > * PCIEPORTBUS > * PCIEASPM > > and fix some "help" typoes and formatting. None of this should cause > any functional change. > > Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> > > --- > > Not compile-tested, but "make menuconfig" tested. > > diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig > index 893503f..cc48eb4 100644 > --- a/drivers/pci/Kconfig > +++ b/drivers/pci/Kconfig > @@ -1,24 +1,26 @@ > # > # PCI configuration > # > + > +if PCI > + This looks like good stuff. Would you mind splitting the help text cleanups into a separate patch so we have a "no-brainer" typo patch and a smaller one with the more interesting bits? I think you have some more changes in mind; I hope they're still coming. You mentioned some of these earlier and I added a couple more: - Fold aer/Kconfig.debug into aer/Kconfig - Move 'source "drivers/pci/hotplug/Kconfig"' from arch Kconfigs to pci/Kconfig - Maybe move CONFIG_HOTPLUG_PCI_PCIE to the HOTPLUG_PCI menu? - Move 'source "drivers/pci/pcie/Kconfig"" from arch Kconfig to pci/Kconfig. This might require some thought -- my guess is that doing this naively will result in adding PCIe code bulk to some arches that don't care about PCI at all. Maybe a new PCIe config symbol selected by the arch would be required. - arch/x86/kconfig has two "config PCI_MMCONFIG" stanzas; I assume one would be sufficient - On x86, at least, IOV, PRI, PASID, IO-APIC hotplug, PCI host controller drivers, and Support for PCI Hotplug don't appear nested under "PCI support", which seems wrong > config PCI_MSI > bool "Message Signaled Interrupts (MSI and MSI-X)" > - depends on PCI > help > - This allows device drivers to enable MSI (Message Signaled > - Interrupts). Message Signaled Interrupts enable a device to > - generate an interrupt using an inbound Memory Write on its > - PCI bus instead of asserting a device IRQ pin. > + This allows device drivers to enable MSI (Message Signaled > + Interrupts). Message Signaled Interrupts enable a device to > + generate an interrupt using an inbound Memory Write on its > + PCI bus instead of asserting a device IRQ pin. > > - Use of PCI MSI interrupts can be disabled at kernel boot time > - by using the 'pci=nomsi' option. This disables MSI for the > - entire system. > + Use of PCI MSI interrupts can be disabled at kernel boot time > + by using the 'pci=nomsi' option. This disables MSI for the > + entire system. > > - If you don't know what to do here, say Y. > + If you don't know what to do here, say Y. > > config PCI_DEBUG > bool "PCI Debugging" > - depends on PCI && DEBUG_KERNEL > + depends on DEBUG_KERNEL > help > Say Y here if you want the PCI core to produce a bunch of debug > messages to the system log. Select this if you are having a > @@ -28,7 +30,6 @@ config PCI_DEBUG > > config PCI_REALLOC_ENABLE_AUTO > bool "Enable PCI resource re-allocation detection" > - depends on PCI > help > Say Y here if you want the PCI core to detect if PCI resource > re-allocation needs to be enabled. You can always use pci=realloc=on > @@ -41,7 +42,6 @@ config PCI_REALLOC_ENABLE_AUTO > > config PCI_STUB > tristate "PCI Stub driver" > - depends on PCI > help > Say Y or M here if you want be able to reserve a PCI device > when it is going to be assigned to a guest operating system. > @@ -50,7 +50,7 @@ config PCI_STUB > > config XEN_PCIDEV_FRONTEND > tristate "Xen PCI Frontend" > - depends on PCI && X86 && XEN > + depends on X86 && XEN > select PCI_XEN > select XEN_XENBUS_FRONTEND > default y > @@ -61,18 +61,17 @@ config XEN_PCIDEV_FRONTEND > config HT_IRQ > bool "Interrupts on hypertransport devices" > default y > - depends on PCI && X86_LOCAL_APIC && X86_IO_APIC > + depends on X86_LOCAL_APIC && X86_IO_APIC > help > - This allows native hypertransport devices to use interrupts. > + This allows native hypertransport devices to use interrupts. > > - If unsure say Y. > + If unsure say Y. > > config PCI_ATS > bool > > config PCI_IOV > bool "PCI IOV support" > - depends on PCI > select PCI_ATS > help > I/O Virtualization is a PCI feature supported by some devices > @@ -83,7 +82,6 @@ config PCI_IOV > > config PCI_PRI > bool "PCI PRI support" > - depends on PCI > select PCI_ATS > help > PRI is the PCI Page Request Interface. It allows PCI devices that are > @@ -93,7 +91,6 @@ config PCI_PRI > > config PCI_PASID > bool "PCI PASID support" > - depends on PCI > select PCI_ATS > help > Process Address Space Identifiers (PASIDs) can be used by PCI devices > @@ -106,7 +103,6 @@ config PCI_PASID > > config PCI_IOAPIC > bool "PCI IO-APIC hotplug support" if X86 > - depends on PCI > depends on ACPI > depends on X86_IO_APIC > default !X86 > @@ -116,3 +112,5 @@ config PCI_LABEL > select NLS > > source "drivers/pci/host/Kconfig" > + > +endif # PCI > diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig > index df8caec..334d50d 100644 > --- a/drivers/pci/hotplug/Kconfig > +++ b/drivers/pci/hotplug/Kconfig > @@ -81,7 +81,7 @@ config HOTPLUG_PCI_CPCI_ZT5550 > tristate "Ziatech ZT5550 CompactPCI Hotplug driver" > depends on HOTPLUG_PCI_CPCI && X86 > help > - Say Y here if you have an Performance Technologies (formerly Intel, > + Say Y here if you have a Performance Technologies (formerly Intel, > formerly just Ziatech) Ziatech ZT5550 CompactPCI system card. > > To compile this driver as a module, choose M here: the > diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig > index 7958e59..4a404f3 100644 > --- a/drivers/pci/pcie/Kconfig > +++ b/drivers/pci/pcie/Kconfig > @@ -10,12 +10,14 @@ config PCIEPORTBUS > Power Management Event support and Virtual Channel support to run > on PCI Express Ports (Root or Switch). > > +if PCIEPORTBUS > + > # > # Include service Kconfig here > # > config HOTPLUG_PCI_PCIE > bool "PCI Express Hotplug driver" > - depends on HOTPLUG_PCI && PCIEPORTBUS > + depends on HOTPLUG_PCI > help > Say Y here if you have a motherboard that supports PCI Express Native > Hotplug > @@ -29,7 +31,6 @@ source "drivers/pci/pcie/aer/Kconfig" > # > config PCIEASPM > bool "PCI Express ASPM control" if EXPERT > - depends on PCI && PCIEPORTBUS > default y > help > This enables OS control over PCI Express ASPM (Active State > @@ -44,9 +45,11 @@ config PCIEASPM > /sys/module/pcie_aspm/parameters/policy > > When in doubt, say Y. > + > +if PCIEASPM > + > config PCIEASPM_DEBUG > bool "Debug PCI Express ASPM" > - depends on PCIEASPM > default n > help > This enables PCI Express ASPM debug support. It will add per-device > @@ -55,28 +58,28 @@ config PCIEASPM_DEBUG > choice > prompt "Default ASPM policy" > default PCIEASPM_DEFAULT > - depends on PCIEASPM > > config PCIEASPM_DEFAULT > bool "BIOS default" > - depends on PCIEASPM > help > Use the BIOS defaults for PCI Express ASPM. > > config PCIEASPM_POWERSAVE > bool "Powersave" > - depends on PCIEASPM > help > Enable PCI Express ASPM L0s and L1 where possible, even if the > BIOS did not. > > config PCIEASPM_PERFORMANCE > bool "Performance" > - depends on PCIEASPM > help > Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them. > endchoice > > +endif # PCIEASPM > + > config PCIE_PME > def_bool y > - depends on PCIEPORTBUS && PM_RUNTIME > + depends on PM_RUNTIME > + > +endif # PCIEPORTBUS > > -- > > ======================================================================== > Robert P. J. Day Ottawa, Ontario, CANADA > http://crashcourse.ca > > Twitter: http://twitter.com/rpjday > LinkedIn: http://ca.linkedin.com/in/rpjday > ======================================================================== > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index 893503f..cc48eb4 100644 --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -1,24 +1,26 @@ # # PCI configuration # + +if PCI + config PCI_MSI bool "Message Signaled Interrupts (MSI and MSI-X)" - depends on PCI help - This allows device drivers to enable MSI (Message Signaled - Interrupts). Message Signaled Interrupts enable a device to - generate an interrupt using an inbound Memory Write on its - PCI bus instead of asserting a device IRQ pin. + This allows device drivers to enable MSI (Message Signaled + Interrupts). Message Signaled Interrupts enable a device to + generate an interrupt using an inbound Memory Write on its + PCI bus instead of asserting a device IRQ pin. - Use of PCI MSI interrupts can be disabled at kernel boot time - by using the 'pci=nomsi' option. This disables MSI for the - entire system. + Use of PCI MSI interrupts can be disabled at kernel boot time + by using the 'pci=nomsi' option. This disables MSI for the + entire system. - If you don't know what to do here, say Y. + If you don't know what to do here, say Y. config PCI_DEBUG bool "PCI Debugging" - depends on PCI && DEBUG_KERNEL + depends on DEBUG_KERNEL help Say Y here if you want the PCI core to produce a bunch of debug messages to the system log. Select this if you are having a @@ -28,7 +30,6 @@ config PCI_DEBUG config PCI_REALLOC_ENABLE_AUTO bool "Enable PCI resource re-allocation detection" - depends on PCI help Say Y here if you want the PCI core to detect if PCI resource re-allocation needs to be enabled. You can always use pci=realloc=on @@ -41,7 +42,6 @@ config PCI_REALLOC_ENABLE_AUTO config PCI_STUB tristate "PCI Stub driver" - depends on PCI help Say Y or M here if you want be able to reserve a PCI device when it is going to be assigned to a guest operating system. @@ -50,7 +50,7 @@ config PCI_STUB config XEN_PCIDEV_FRONTEND tristate "Xen PCI Frontend" - depends on PCI && X86 && XEN + depends on X86 && XEN select PCI_XEN select XEN_XENBUS_FRONTEND default y @@ -61,18 +61,17 @@ config XEN_PCIDEV_FRONTEND config HT_IRQ bool "Interrupts on hypertransport devices" default y - depends on PCI && X86_LOCAL_APIC && X86_IO_APIC + depends on X86_LOCAL_APIC && X86_IO_APIC help - This allows native hypertransport devices to use interrupts. + This allows native hypertransport devices to use interrupts. - If unsure say Y. + If unsure say Y. config PCI_ATS bool config PCI_IOV bool "PCI IOV support" - depends on PCI select PCI_ATS help I/O Virtualization is a PCI feature supported by some devices @@ -83,7 +82,6 @@ config PCI_IOV config PCI_PRI bool "PCI PRI support" - depends on PCI select PCI_ATS help PRI is the PCI Page Request Interface. It allows PCI devices that are @@ -93,7 +91,6 @@ config PCI_PRI config PCI_PASID bool "PCI PASID support" - depends on PCI select PCI_ATS help Process Address Space Identifiers (PASIDs) can be used by PCI devices @@ -106,7 +103,6 @@ config PCI_PASID config PCI_IOAPIC bool "PCI IO-APIC hotplug support" if X86 - depends on PCI depends on ACPI depends on X86_IO_APIC default !X86 @@ -116,3 +112,5 @@ config PCI_LABEL select NLS source "drivers/pci/host/Kconfig" + +endif # PCI diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig index df8caec..334d50d 100644 --- a/drivers/pci/hotplug/Kconfig +++ b/drivers/pci/hotplug/Kconfig @@ -81,7 +81,7 @@ config HOTPLUG_PCI_CPCI_ZT5550 tristate "Ziatech ZT5550 CompactPCI Hotplug driver" depends on HOTPLUG_PCI_CPCI && X86 help - Say Y here if you have an Performance Technologies (formerly Intel, + Say Y here if you have a Performance Technologies (formerly Intel, formerly just Ziatech) Ziatech ZT5550 CompactPCI system card. To compile this driver as a module, choose M here: the diff --git a/drivers/pci/pcie/Kconfig b/drivers/pci/pcie/Kconfig index 7958e59..4a404f3 100644 --- a/drivers/pci/pcie/Kconfig +++ b/drivers/pci/pcie/Kconfig @@ -10,12 +10,14 @@ config PCIEPORTBUS Power Management Event support and Virtual Channel support to run on PCI Express Ports (Root or Switch). +if PCIEPORTBUS + # # Include service Kconfig here # config HOTPLUG_PCI_PCIE bool "PCI Express Hotplug driver" - depends on HOTPLUG_PCI && PCIEPORTBUS + depends on HOTPLUG_PCI help Say Y here if you have a motherboard that supports PCI Express Native Hotplug @@ -29,7 +31,6 @@ source "drivers/pci/pcie/aer/Kconfig" # config PCIEASPM bool "PCI Express ASPM control" if EXPERT - depends on PCI && PCIEPORTBUS default y help This enables OS control over PCI Express ASPM (Active State @@ -44,9 +45,11 @@ config PCIEASPM /sys/module/pcie_aspm/parameters/policy When in doubt, say Y. + +if PCIEASPM + config PCIEASPM_DEBUG bool "Debug PCI Express ASPM" - depends on PCIEASPM default n help This enables PCI Express ASPM debug support. It will add per-device @@ -55,28 +58,28 @@ config PCIEASPM_DEBUG choice prompt "Default ASPM policy" default PCIEASPM_DEFAULT - depends on PCIEASPM config PCIEASPM_DEFAULT bool "BIOS default" - depends on PCIEASPM help Use the BIOS defaults for PCI Express ASPM. config PCIEASPM_POWERSAVE bool "Powersave" - depends on PCIEASPM help Enable PCI Express ASPM L0s and L1 where possible, even if the BIOS did not. config PCIEASPM_PERFORMANCE bool "Performance" - depends on PCIEASPM help Disable PCI Express ASPM L0s and L1, even if the BIOS enabled them. endchoice +endif # PCIEASPM + config PCIE_PME def_bool y - depends on PCIEPORTBUS && PM_RUNTIME + depends on PM_RUNTIME + +endif # PCIEPORTBUS
Simplify some of the PCI-related Kconfig files by replacing numerous explicit dependencies with "if" wrappers" * PCI * PCIEPORTBUS * PCIEASPM and fix some "help" typoes and formatting. None of this should cause any functional change. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> --- Not compile-tested, but "make menuconfig" tested.