On Thu, Jun 21, 2012 at 8:17 AM, Ulrich Drepper <drepper@xxxxxxxxx> wrote:
> On Wed, Jun 20, 2012 at 11:50 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>> please check -v3, and it will add 40 lines.
>
> Won't this version print out something like
>
> PCI: unknown option `busnum_node=xx:yy'
It does.
If you apply the following patch on top of your version 3 patch it
seems to work and is slightly more efficient.
Signed-off-by: Ulrich Drepper <drepper@xxxxxxxxx>
diff -u b/arch/x86/pci/common.c b/arch/x86/pci/common.c
--- b/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -494,16 +494,22 @@
return 0;
}
+static const char *busnum_node_param;
+
+static void remember_busnum_node(const char *str)
+{
+ busnum_node_param = str;
+}
+
int get_user_busnum_node(int busnum)
{
int bus, node, count;
- char *p;
+ const char *p;
- p = strstr(boot_command_line, "busnum_node=");
+ p = busnum_node_param;
if (!p)
return -1;
- p += 12; /* strlen("busnum_node=") */
while (*p) {
count = 0;
if (sscanf(p, "%x:%x%n", &bus, &node, &count) != 2) {
@@ -607,6 +613,9 @@
} else if (!strcmp(str, "nocrs")) {
pci_probe |= PCI_ROOT_NO_CRS;
return NULL;
+ } else if (!strncmp(str, "busnum_node=", 12)) {
+ remember_busnum_node(str + 12);
+ return NULL;
} else if (!strcmp(str, "earlydump")) {
pci_early_dump_regs = 1;
return NULL;
--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
