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authorJeff Garzik <jeff@garzik.org>2007-10-11 16:57:27 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 15:03:18 -0700
commit32a2eea795643929a43cbbba00d8c4a176b309bf (patch)
treec0bbf2e3ef330ec9f36c42dfbe6c360efe685f82 /include/linux/pci.h
parent11949255d9433ea6c0908b7390ec4faecd1d4cf0 (diff)
PCI: Add 'nodomains' boot option, and pci_domains_supported global
* Introduce pci_domains_supported global, hardcoded to zero if !CONFIG_PCI_DOMAINS. * Introduce 'nodomains' boot option, which clears pci_domains_supported on platforms that enable it by default (x86, x86-64, and others when they are converted to use this). Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/pci.h')
-rw-r--r--include/linux/pci.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 038a0dc7273..768b93359f9 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -685,13 +685,16 @@ extern void pci_unblock_user_cfg_access(struct pci_dev *dev);
* a PCI domain is defined to be a set of PCI busses which share
* configuration space.
*/
-#ifndef CONFIG_PCI_DOMAINS
+#ifdef CONFIG_PCI_DOMAINS
+extern int pci_domains_supported;
+#else
+enum { pci_domains_supported = 0 };
static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
static inline int pci_proc_domain(struct pci_bus *bus)
{
return 0;
}
-#endif
+#endif /* CONFIG_PCI_DOMAINS */
#else /* CONFIG_PCI is not enabled */