On Tue, Jul 10, 2012 at 12:00 AM, cheng renquan <crquan@xxxxxxxxx> wrote: > $ git diff HEAD -- drivers/acpi/scan.c > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index 85cbfdc..7d26ae0 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -28,7 +28,7 @@ extern struct acpi_device *acpi_root; > > static const char *dummy_hid = "device"; > > -static LIST_HEAD(acpi_device_list); > static LIST_HEAD(acpi_bus_id_list); > DEFINE_MUTEX(acpi_device_lock); > LIST_HEAD(acpi_wakeup_device_list); fortunately a later step of gcc optimization deleted that variable so it doesn't consume space in the final vmlinux, only the really in-use variable like the next acpi_bus_id_list consumed space; $ eu-readelf -s drivers/acpi/scan.o |egrep '(acpi_device_list|acpi_bus_id_list)' 35: 00000000000000b0 16 OBJECT LOCAL DEFAULT 3 acpi_bus_id_list $ eu-readelf -s vmlinux |egrep '(acpi_device_list|acpi_bus_id_list)' 24029: ffffffff81a62bc0 16 OBJECT LOCAL DEFAULT 15 acpi_bus_id_list anyway, we'd better to delete the acpi_device_list from the source; -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
