kernel_optimize_test/arch/sparc64/kernel
Gautham R Shenoy b282b6f8a8 [PATCH] Change cpu_up and co from __devinit to __cpuinit
Compiling the kernel with CONFIG_HOTPLUG = y and CONFIG_HOTPLUG_CPU = n
with CONFIG_RELOCATABLE = y generates the following modpost warnings

WARNING: vmlinux - Section mismatch: reference to .init.data: from
.text between '_cpu_up' (at offset 0xc0141b7d) and 'cpu_up'
WARNING: vmlinux - Section mismatch: reference to .init.data: from
.text between '_cpu_up' (at offset 0xc0141b9c) and 'cpu_up'
WARNING: vmlinux - Section mismatch: reference to .init.text:__cpu_up
from .text between '_cpu_up' (at offset 0xc0141bd8) and 'cpu_up'
WARNING: vmlinux - Section mismatch: reference to .init.data: from
.text between '_cpu_up' (at offset 0xc0141c05) and 'cpu_up'
WARNING: vmlinux - Section mismatch: reference to .init.data: from
.text between '_cpu_up' (at offset 0xc0141c26) and 'cpu_up'
WARNING: vmlinux - Section mismatch: reference to .init.data: from
.text between '_cpu_up' (at offset 0xc0141c37) and 'cpu_up'

This is because cpu_up, _cpu_up and __cpu_up (in some architectures) are
defined as __devinit
AND
__cpu_up calls some __cpuinit functions.

Since __cpuinit would map to __init with this kind of a configuration,
we get a .text refering .init.data warning.

This patch solves the problem by converting all of __cpu_up, _cpu_up
and cpu_up from __devinit to __cpuinit. The approach is justified since
the callers of cpu_up are either dependent on CONFIG_HOTPLUG_CPU or
are of __init type.

Thus when CONFIG_HOTPLUG_CPU=y, all these cpu up functions would land up
in .text section, and when CONFIG_HOTPLUG_CPU=n, all these functions would
land up in .init section.

Tested on a i386 SMP machine running linux-2.6.20-rc3-mm1.

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Cc: Vivek Goyal <vgoyal@in.ibm.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-11 18:18:20 -08:00
..
asm-offsets.c
audit.c
auxio.c
binfmt_aout32.c
binfmt_elf32.c
central.c
chmc.c
compat_audit.c
cpu.c
devices.c
dtlb_miss.S
dtlb_prot.S
ebus.c
entry.S
etrap.S
head.S
idprom.c
init_task.c
iommu_common.c
iommu_common.h
irq.c
isa.c
itlb_miss.S
kprobes.c
ktlb.S
Makefile
module.c
of_device.c
pci_common.c
pci_impl.h
pci_iommu.c
pci_psycho.c
pci_sabre.c
pci_schizo.c
pci_sun4v_asm.S
pci_sun4v.c
pci_sun4v.h
pci.c
power.c
process.c
prom.c
ptrace.c
rtrap.S
sbus.c
semaphore.c
setup.c
signal32.c
signal.c
smp.c
sparc64_ksyms.c
stacktrace.c
starfire.c
sun4v_ivec.S
sun4v_tlb_miss.S
sunos_ioctl32.c
sys32.S
sys_sparc32.c
sys_sparc.c
sys_sunos32.c
systbls.S
time.c
trampoline.S
traps.c
tsb.S
ttable.S
una_asm.S
unaligned.c
us2e_cpufreq.c
us3_cpufreq.c
visemul.c
vmlinux.lds.S
winfixup.S