x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata
This patch introduces struct pci_sysdata to x86 and x86-64, and
converts the existing two users (NUMA, Calgary) to use it.
This lays the groundwork for having other users of sysdata, such as
the PCI domains work.
The Calgary bits are tested, the NUMA bits just look ok.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c
index 3f78d4d..85503dee 100644
--- a/arch/i386/pci/common.c
+++ b/arch/i386/pci/common.c
@@ -293,6 +293,7 @@
struct pci_bus * __devinit pcibios_scan_root(int busnum)
{
struct pci_bus *bus = NULL;
+ struct pci_sysdata *sd;
dmi_check_system(pciprobe_dmi_table);
@@ -303,9 +304,19 @@
}
}
+ /* Allocate per-root-bus (not per bus) arch-specific data.
+ * TODO: leak; this memory is never freed.
+ * It's arguable whether it's worth the trouble to care.
+ */
+ sd = kzalloc(sizeof(*sd), GFP_KERNEL);
+ if (!sd) {
+ printk(KERN_ERR "PCI: OOM, not probing PCI bus %02x\n", busnum);
+ return NULL;
+ }
+
printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
- return pci_scan_bus_parented(NULL, busnum, &pci_root_ops, NULL);
+ return pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
}
extern u8 pci_cache_line_size;