[parisc-linux] Spinlock patch, take 2

[Joel Soete]

> 
> Here's another version of my spinlock patch against 2.6.4. It optimizes
>spinlocks used for atomic operations by putting the atomic locks into a
>special section that is guaranteed to be 16-byte aligned, so no runtime
>alignment is needed. Build-tested against 2.6.4. Comments?
>
Ongoing to try to apply it against 2.6.[45] and encounter very early a pb
which seems to be solved by following patch:
--- include/asm-parisc/smp.h.orig	2004-01-28 08:24:41.000000000 +0100
+++ include/asm-parisc/smp.h	2004-03-19 11:34:04.078456992 +0100
@@ -54,7 +54,7 @@
 #define smp_processor_id()	(current_thread_info()->cpu)
 #define cpu_online(cpu) cpu_isset(cpu, cpu_online_map)
 
-#define cpu_possible_map	cpu_present_map
+#define cpu_possible_map	cpu_present_mask
 
 #endif /* CONFIG_SMP */
=========><=========

Is it correct?

But using c3k config and adding smp support to 2.6.5-rc1, I encounter this
ld pb:
  gcc -Wp,-MD,drivers/usb/core/.devices.o.d -nostdinc -iwithprefix include
-D__KERNEL__ -Iinclude  -D__KERNEL__ -Iinclude  -Wall -Wstrict-prototypes
-Wno-trigraphs -fno-strict-aliasing -fno-common -pipe -mno-space-regs -mfast-indirect-calls
-mdisable-fpregs -ffunction-sections -march=2.0 -mschedule=8000 -O2 -fomit-frame-pointer
    -DKBUILD_BASENAME=devices -DKBUILD_MODNAME=usbcore -c -o drivers/usb/core/devices.o
drivers/usb/core/devices.c
  ld   -r -o drivers/usb/core/usbcore.o drivers/usb/core/usb.o drivers/usb/core/hub.o
drivers/usb/core/hcd.o drivers/usb/core/urb.o drivers/usb/core/message.o
drivers/usb/core/config.o drivers/usb/core/file.o drivers/usb/core/buffer.o
drivers/usb/core/driverfs.o drivers/usb/core/hcd-pci.o drivers/usb/core/devio.o
drivers/usb/core/inode.o drivers/usb/core/devices.o
Inconsistency detected by ld.so: dynamic-link.h: 164: elf_get_dynamic_info:
Assertion `info[9]->d_un.d_val == sizeof (Elf32_Rela)' failed!
make[3]: *** [drivers/usb/core/usbcore.o] Error 127
make[2]: *** [drivers/usb/core] Error 2

Any idea? (the same kernel 2.6.5-rc1 + same patches but with a500 config
+smp compiles well :) )

Thanks in advance,
   Joel


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