compiling with
make CONFIG_DEBUG_SECTION_MISMATCH=y
I see the following warnings:
CC kernel/stacktrace.o
CC kernel/irq/handle.o
LD mm/built-in.o
WARNING: mm/built-in.o(.meminit.text+0x89e): Section mismatch in reference from the function free_area_init_core() to the function .init.text:setup_usemap()
The function __meminit free_area_init_core() references
a function __init setup_usemap().
If setup_usemap is only used by free_area_init_core then
annotate setup_usemap with a matching annotation.
WARNING: mm/built-in.o(.data+0x10a4): Section mismatch in reference from the variable cpu_callback_nb.23582 to the function .devinit.text:cpu_callback()
The variable cpu_callback_nb.23582 references
the function __devinit cpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
CC ipc/util.o
CC fs/mpage.o
[...]
LDS arch/x86/kernel/vmlinux.lds
CC kernel/power/swsusp.o
CC fs/nfsctl.o
LD arch/x86/kernel/built-in.o
WARNING: arch/x86/kernel/built-in.o(.text+0x13277): Section mismatch in reference from the function cpu_exit_clear() to the function .cpuinit.text:cpu_uninit()
The function cpu_exit_clear() references
the function __cpuinit cpu_uninit().
This is often because cpu_exit_clear lacks a __cpuinit
annotation or the annotation of cpu_uninit is wrong.
LD security/built-in.o
[...]
CC kernel/latencytop.o
CC [M] fs/cifs/dir.o
CC block/genhd.o
LD kernel/built-in.o
fs/cifs/dir.c: In function ‘cifs_ci_compare’:
fs/cifs/dir.c:594: warning: passing argument 1 of ‘__constant_memcpy’ discards qualifiers from pointer target type
fs/cifs/dir.c:594: warning: passing argument 1 of ‘__memcpy’ discards qualifiers from pointer target type
fs/cifs/dir.c:594: warning: passing argument 1 of ‘__constant_memcpy’ discards qualifiers from pointer target type
fs/cifs/dir.c:594: warning: passing argument 1 of ‘__memcpy’ discards qualifiers from pointer target type
WARNING: kernel/built-in.o(.text+0x30269): Section mismatch in reference from the function take_cpu_down() to the variable .cpuinit.data:cpu_chain
The function take_cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because take_cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: kernel/built-in.o(.text+0x302f7): Section mismatch in reference from the function _cpu_down() to the variable .cpuinit.data:cpu_chain
The function _cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because _cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: kernel/built-in.o(.text+0x3036d): Section mismatch in reference from the function _cpu_down() to the variable .cpuinit.data:cpu_chain
The function _cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because _cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: kernel/built-in.o(.text+0x303cf): Section mismatch in reference from the function _cpu_down() to the variable .cpuinit.data:cpu_chain
The function _cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because _cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: kernel/built-in.o(.text+0x303fb): Section mismatch in reference from the function _cpu_down() to the variable .cpuinit.data:cpu_chain
The function _cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because _cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: kernel/built-in.o(.text+0x3050e): Section mismatch in reference from the function unregister_cpu_notifier() to the variable .cpuinit.data:cpu_chain
The function unregister_cpu_notifier() references
the variable __cpuinitdata cpu_chain.
This is often because unregister_cpu_notifier lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: kernel/built-in.o(.data+0x270): Section mismatch in reference from the variable profile_cpu_callback_nb.19213 to the function .devinit.text:profile_cpu_callback()
The variable profile_cpu_callback_nb.19213 references
the function __devinit profile_cpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
WARNING: kernel/built-in.o(.data+0x1b48): Section mismatch in reference from the variable workqueue_cpu_callback_nb.13434 to the function .devinit.text:workqueue_cpu_callback()
The variable workqueue_cpu_callback_nb.13434 references
the function __devinit workqueue_cpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
block/genhd.c: In function ‘genhd_device_init’:
block/genhd.c:361: warning: ignoring return value of ‘class_register’, declared with attribute warn_unused_result
CC drivers/acpi/tables.o
[...]
LD [M] fs/hfsplus/hfsplus.o
CC [M] fs/isofs/namei.o
CC [M] net/bluetooth/rfcomm/tty.o
CC [M] fs/isofs/inode.o
LD [M] net/bluetooth/rfcomm/rfcomm.o
LD [M] net/bluetooth/bluetooth.o
LD drivers/acpi/processor.o
WARNING: drivers/acpi/processor.o(.text+0xac5): Section mismatch in reference from the function acpi_processor_hotplug_notify() to the function .cpuinit.text:acpi_processor_start()
The function acpi_processor_hotplug_notify() references
the function __cpuinit acpi_processor_start().
This is often because acpi_processor_hotplug_notify lacks a __cpuinit
annotation or the annotation of acpi_processor_start is wrong.
LD drivers/acpi/built-in.o
CC [M] net/bridge/br.o
WARNING: drivers/acpi/built-in.o(.text+0x1e709): Section mismatch in reference from the function acpi_processor_hotplug_notify() to the function .cpuinit.text:acpi_processor_start()
The function acpi_processor_hotplug_notify() references
the function __cpuinit acpi_processor_start().
This is often because acpi_processor_hotplug_notify lacks a __cpuinit
annotation or the annotation of acpi_processor_start is wrong.
[...]
CC drivers/base/module.o
LD [M] net/bridge/bridge.o
CC net/core/sock.o
LD drivers/base/built-in.o
WARNING: drivers/base/built-in.o(.data+0x5a0): Section mismatch in reference from the variable topology_cpu_callback_nb.11044 to the function .cpuinit.text:topology_cpu_callback()
The variable topology_cpu_callback_nb.11044 references
the function __cpuinit topology_cpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
CC drivers/block/brd.o
CC lib/scatterlist.o
[...]
CC [M] lib/ts_fsm.o
CC drivers/char/defkeymap.o
LD net/core/built-in.o
CC drivers/char/rtc.o
CC [M] fs/minix/itree_v2.o
LD lib/built-in.o
CC net/ethernet/eth.o
WARNING: lib/built-in.o(.data+0x60): Section mismatch in reference from the variable percpu_counter_hotcpu_callback_nb.9546 to the function .cpuinit.text:percpu_counter_hotcpu_callback()
The variable percpu_counter_hotcpu_callback_nb.9546 references
the function __cpuinit percpu_counter_hotcpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
AR lib/lib.a
CC arch/x86/lib/msr-on-cpu.o
CC drivers/char/hpet.o
[...]
CC [M] drivers/cpufreq/cpufreq_stats.o
CC [M] net/ieee80211/softmac/ieee80211softmac_module.o
CC [M] fs/nfsd/auth.o
CC [M] fs/nfs/pagelist.o
LD drivers/cpufreq/built-in.o
WARNING: drivers/cpufreq/built-in.o(.text+0x28): Section mismatch in reference from the function cpufreq_unregister_driver() to the variable .cpuinit.data:cpufreq_cpu_notifier
The function cpufreq_unregister_driver() references
the variable __cpuinitdata cpufreq_cpu_notifier.
This is often because cpufreq_unregister_driver lacks a __cpuinitdata
annotation or the annotation of cpufreq_cpu_notifier is wrong.
WARNING: drivers/cpufreq/built-in.o(.text+0x1a2e): Section mismatch in reference from the function cpufreq_register_driver() to the variable .cpuinit.data:cpufreq_cpu_notifier
The function cpufreq_register_driver() references
the variable __cpuinitdata cpufreq_cpu_notifier.
This is often because cpufreq_register_driver lacks a __cpuinitdata
annotation or the annotation of cpufreq_cpu_notifier is wrong.
CC drivers/cpuidle/cpuidle.o
CC [M] net/ieee80211/softmac/ieee80211softmac_scan.o
[...]
LD drivers/usb/built-in.o
LD drivers/built-in.o
WARNING: drivers/built-in.o(.text+0x2cdc5): Section mismatch in reference from the function acpi_processor_hotplug_notify() to the function .cpuinit.text:acpi_processor_start()
The function acpi_processor_hotplug_notify() references
the function __cpuinit acpi_processor_start().
This is often because acpi_processor_hotplug_notify lacks a __cpuinit
annotation or the annotation of acpi_processor_start is wrong.
WARNING: drivers/built-in.o(.text+0xc07a8): Section mismatch in reference from the function cpufreq_unregister_driver() to the variable .cpuinit.data:cpufreq_cpu_notifier
The function cpufreq_unregister_driver() references
the variable __cpuinitdata cpufreq_cpu_notifier.
This is often because cpufreq_unregister_driver lacks a __cpuinitdata
annotation or the annotation of cpufreq_cpu_notifier is wrong.
WARNING: drivers/built-in.o(.text+0xc21ae): Section mismatch in reference from the function cpufreq_register_driver() to the variable .cpuinit.data:cpufreq_cpu_notifier
The function cpufreq_register_driver() references
the variable __cpuinitdata cpufreq_cpu_notifier.
This is often because cpufreq_register_driver lacks a __cpuinitdata
annotation or the annotation of cpufreq_cpu_notifier is wrong.
WARNING: drivers/built-in.o(.data+0x6ce0): Section mismatch in reference from the variable topology_cpu_callback_nb.11044 to the function .cpuinit.text:topology_cpu_callback()
The variable topology_cpu_callback_nb.11044 references
the function __cpuinit topology_cpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
LD vmlinux.o
MODPOST vmlinux.o
WARNING: vmlinux.o(.text+0x134d7): Section mismatch in reference from the function cpu_exit_clear() to the function .cpuinit.text:cpu_uninit()
The function cpu_exit_clear() references
the function __cpuinit cpu_uninit().
This is often because cpu_exit_clear lacks a __cpuinit
annotation or the annotation of cpu_uninit is wrong.
WARNING: vmlinux.o(.text+0x4cfa9): Section mismatch in reference from the function take_cpu_down() to the variable .cpuinit.data:cpu_chain
The function take_cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because take_cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: vmlinux.o(.text+0x4d037): Section mismatch in reference from the function _cpu_down() to the variable .cpuinit.data:cpu_chain
The function _cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because _cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: vmlinux.o(.text+0x4d0ad): Section mismatch in reference from the function _cpu_down() to the variable .cpuinit.data:cpu_chain
The function _cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because _cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: vmlinux.o(.text+0x4d10f): Section mismatch in reference from the function _cpu_down() to the variable .cpuinit.data:cpu_chain
The function _cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because _cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: vmlinux.o(.text+0x4d13b): Section mismatch in reference from the function _cpu_down() to the variable .cpuinit.data:cpu_chain
The function _cpu_down() references
the variable __cpuinitdata cpu_chain.
This is often because _cpu_down lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: vmlinux.o(.text+0x4d24e): Section mismatch in reference from the function unregister_cpu_notifier() to the variable .cpuinit.data:cpu_chain
The function unregister_cpu_notifier() references
the variable __cpuinitdata cpu_chain.
This is often because unregister_cpu_notifier lacks a __cpuinitdata
annotation or the annotation of cpu_chain is wrong.
WARNING: vmlinux.o(.text+0x16e701): Section mismatch in reference from the function pci_scan_child_bus() to the function .devinit.text:pcibios_fixup_bus()
The function pci_scan_child_bus() references
the function __devinit pcibios_fixup_bus().
This is often because pci_scan_child_bus lacks a __devinit
annotation or the annotation of pcibios_fixup_bus is wrong.
WARNING: vmlinux.o(.text+0x197007): Section mismatch in reference from the function acpi_pci_root_add() to the function .devinit.text:pci_acpi_scan_root()
The function acpi_pci_root_add() references
the function __devinit pci_acpi_scan_root().
This is often because acpi_pci_root_add lacks a __devinit
annotation or the annotation of pci_acpi_scan_root is wrong.
WARNING: vmlinux.o(.text+0x19976b): Section mismatch in reference from the function acpi_processor_install_hotplug_notify() to the function .cpuinit.text:register_cpu_notifier()
The function acpi_processor_install_hotplug_notify() references
the function __cpuinit register_cpu_notifier().
This is often because acpi_processor_install_hotplug_notify lacks a __cpuinit
annotation or the annotation of register_cpu_notifier is wrong.
WARNING: vmlinux.o(.text+0x1998f5): Section mismatch in reference from the function acpi_processor_hotplug_notify() to the function .cpuinit.text:acpi_processor_start()
The function acpi_processor_hotplug_notify() references
the function __cpuinit acpi_processor_start().
This is often because acpi_processor_hotplug_notify lacks a __cpuinit
annotation or the annotation of acpi_processor_start is wrong.
WARNING: vmlinux.o(.text+0x1c2014): Section mismatch in reference from the function store_online() to the function .cpuinit.text:cpu_up()
The function store_online() references
the function __cpuinit cpu_up().
This is often because store_online lacks a __cpuinit
annotation or the annotation of cpu_up is wrong.
WARNING: vmlinux.o(.text+0x22d2d8): Section mismatch in reference from the function cpufreq_unregister_driver() to the variable .cpuinit.data:cpufreq_cpu_notifier
The function cpufreq_unregister_driver() references
the variable __cpuinitdata cpufreq_cpu_notifier.
This is often because cpufreq_unregister_driver lacks a __cpuinitdata
annotation or the annotation of cpufreq_cpu_notifier is wrong.
WARNING: vmlinux.o(.text+0x22ecde): Section mismatch in reference from the function cpufreq_register_driver() to the variable .cpuinit.data:cpufreq_cpu_notifier
The function cpufreq_register_driver() references
the variable __cpuinitdata cpufreq_cpu_notifier.
This is often because cpufreq_register_driver lacks a __cpuinitdata
annotation or the annotation of cpufreq_cpu_notifier is wrong.
WARNING: vmlinux.o(.text+0x22ece3): Section mismatch in reference from the function cpufreq_register_driver() to the function .cpuinit.text:register_cpu_notifier()
The function cpufreq_register_driver() references
the function __cpuinit register_cpu_notifier().
This is often because cpufreq_register_driver lacks a __cpuinit
annotation or the annotation of register_cpu_notifier is wrong.
WARNING: vmlinux.o(.meminit.text+0x90e): Section mismatch in reference from the function free_area_init_core() to the function .init.text:setup_usemap()
The function __meminit free_area_init_core() references
a function __init setup_usemap().
If setup_usemap is only used by free_area_init_core then
annotate setup_usemap with a matching annotation.
WARNING: vmlinux.o(.data+0x3830): Section mismatch in reference from the variable profile_cpu_callback_nb.19213 to the function .devinit.text:profile_cpu_callback()
The variable profile_cpu_callback_nb.19213 references
the function __devinit profile_cpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
WARNING: vmlinux.o(.data+0x5108): Section mismatch in reference from the variable workqueue_cpu_callback_nb.13434 to the function .devinit.text:workqueue_cpu_callback()
The variable workqueue_cpu_callback_nb.13434 references
the function __devinit workqueue_cpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
WARNING: vmlinux.o(.data+0x6f64): Section mismatch in reference from the variable cpu_callback_nb.23582 to the function .devinit.text:cpu_callback()
The variable cpu_callback_nb.23582 references
the function __devinit cpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
WARNING: vmlinux.o(.data+0xc2d4): Section mismatch in reference from the variable percpu_counter_hotcpu_callback_nb.9546 to the function .cpuinit.text:percpu_counter_hotcpu_callback()
The variable percpu_counter_hotcpu_callback_nb.9546 references
the function __cpuinit percpu_counter_hotcpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
WARNING: vmlinux.o(.data+0x12fe0): Section mismatch in reference from the variable topology_cpu_callback_nb.11044 to the function .cpuinit.text:topology_cpu_callback()
The variable topology_cpu_callback_nb.11044 references
the function __cpuinit topology_cpu_callback()
If the reference is valid then annotate the
variable with __init* (see linux/init.h) or name the variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
GEN .version
CHK include/linux/compile.h
UPD include/linux/compile.h
CC init/version.o
LD init/built-in.o
LD .tmp_vmlinux1
KSYM .tmp_kallsyms1.S
AS .tmp_kallsyms1.o
LD .tmp_vmlinux2
KSYM .tmp_kallsyms2.S
AS .tmp_kallsyms2.o
LD vmlinux
SYSMAP System.map
SYSMAP .tmp_System.map
Building modules, stage 2.
CC arch/x86/boot/version.o
AS arch/x86/boot/compressed/head_32.o
OBJCOPY arch/x86/boot/compressed/vmlinux.bin
LD arch/x86/boot/setup.elf
OBJCOPY arch/x86/boot/setup.bin
GZIP arch/x86/boot/compressed/vmlinux.bin.gz
MODPOST 437 modules
WARNING: drivers/cpufreq/cpufreq_stats.o(.exit.text+0x20): Section mismatch in reference from the function cleanup_module() to the variable .cpuinit.data:cpufreq_stat_cpu_notifier
The function __exit cleanup_module() references
a variable __cpuinitdata cpufreq_stat_cpu_notifier.
This is often seen when error handling in the exit function
uses functionality in the init path.
The fix is often to remove the __cpuinitdata annotation of
cpufreq_stat_cpu_notifier so it may be used outside an init section.
LD arch/x86/boot/compressed/piggy.o
LD arch/x86/boot/compressed/vmlinux
OBJCOPY arch/x86/boot/vmlinux.bin
BUILD arch/x86/boot/bzImage
Root device is (8, 3)
Setup is 10460 bytes (padded to 10752 bytes).
System is 2285 kB
Kernel: arch/x86/boot/bzImage is ready (#9)
On Sat, Feb 23, 2008 at 08:49:53AM +0100, Soeren Sonnenburg wrote:
> compiling with
>
> make CONFIG_DEBUG_SECTION_MISMATCH=y
>
> I see the following warnings:
>
> CC kernel/stacktrace.o
> CC kernel/irq/handle.o
> LD mm/built-in.o
Hi S?ren.
>From a quick scan I would say most if not all of the
section mismatch warnings are dealt with. The patches
are queued for next -mm and some may be forwarded to
mainline before the release.
Patchset was posted by me last weeken to lkml so they
should be fairly easy to find.
Sam