(Sorry if this topic has been beaten to death, I'm new to the list, in
adddition to being a kernel newbie in general).
I'm running 2.6.0-test9 kernel (yes, I know test11 is out).
I was intrigued by the post "major doubt" and had the book in question
(Linux Device Drivers) so I tried implementing the sample "Hello World"
module.
Please refer to that message for the source code. (Posted Monday 7:16am
ET.)
I couldn't get it to compile on my 2.6.0-test9 kernel (I realize it's
2.4 code), can someone tell me what's wrong or what I need to do to make
it work on 2.6.x?.
Here are my compile-time errors :
# gcc -c -I/usr/src/linux-2.4.6-test9/include hello.c
In file included from /usr/include/linux/jiffies.h:6,
from /usr/include/linux/sched.h:12,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/spinlock.h: In function `bit_spin_lock':
/usr/include/linux/spinlock.h:413: error: invalid type argument of `->'
/usr/include/linux/spinlock.h: In function `bit_spin_trylock':
/usr/include/linux/spinlock.h:430: error: invalid type argument of `->'
/usr/include/linux/spinlock.h:433: error: invalid type argument of `->'
/usr/include/linux/spinlock.h:433: error: `TIF_NEED_RESCHED' undeclared
(first u
se in this function)
/usr/include/linux/spinlock.h:433: error: (Each undeclared identifier is
reporte
d only once
/usr/include/linux/spinlock.h:433: error: for each function it appears
in.)
/usr/include/linux/spinlock.h: In function `bit_spin_unlock':
/usr/include/linux/spinlock.h:451: error: invalid type argument of `->'
/usr/include/linux/spinlock.h:451: error: `TIF_NEED_RESCHED' undeclared
(first u
se in this function)
In file included from /usr/include/linux/jiffies.h:7,
from /usr/include/linux/sched.h:12,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/seqlock.h: In function `write_seqlock':
/usr/include/linux/seqlock.h:52: error: invalid type argument of `->'
/usr/include/linux/seqlock.h: In function `write_sequnlock':
/usr/include/linux/seqlock.h:61: error: invalid type argument of `->'
/usr/include/linux/seqlock.h:61: error: `TIF_NEED_RESCHED' undeclared
(first use
in this function)
/usr/include/linux/seqlock.h: In function `write_tryseqlock':
/usr/include/linux/seqlock.h:66: error: invalid type argument of `->'
/usr/include/linux/seqlock.h:66: error: invalid type argument of `->'
/usr/include/linux/seqlock.h:66: error: `TIF_NEED_RESCHED' undeclared
(first use
in this function)
In file included from /usr/include/linux/sched.h:12,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/jiffies.h: At top level:
/usr/include/linux/jiffies.h:16: error: parse error before "jiffies_64"
/usr/include/linux/jiffies.h:20: error: parse error before
"get_jiffies_64"
In file included from /usr/include/linux/cpumask.h:8,
from /usr/include/linux/sched.h:15,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/bitmap.h: In function `bitmap_empty':
/usr/include/linux/bitmap.h:15: error: `BITS_PER_LONG' undeclared (first
use in
this function)
/usr/include/linux/bitmap.h: In function `bitmap_full':
/usr/include/linux/bitmap.h:29: error: `BITS_PER_LONG' undeclared (first
use in
this function)
/usr/include/linux/bitmap.h: In function `bitmap_equal':
/usr/include/linux/bitmap.h:44: error: `BITS_PER_LONG' undeclared (first
use in
this function)
/usr/include/linux/bitmap.h: In function `bitmap_shift_right':
/usr/include/linux/bitmap.h:85: error: `__shr_tmp' undeclared (first use
in this
function)
/usr/include/linux/bitmap.h: In function `bitmap_shift_left':
/usr/include/linux/bitmap.h:98: error: `__shl_tmp' undeclared (first use
in this
function)
/usr/include/linux/bitmap.h: In function `bitmap_weight':
/usr/include/linux/bitmap.h:144: error: `BITS_PER_LONG' undeclared
(first use in
this function)
In file included from /usr/include/linux/sched.h:15,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/cpumask.h: At top level:
/usr/include/linux/cpumask.h:15: error: variable-size type declared
outside of a
ny function
In file included from /usr/include/linux/sched.h:15,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/cpumask.h: In function `next_online_cpu':
/usr/include/linux/cpumask.h:56: error: structure has no member named
`val'
In file included from /usr/include/linux/sched.h:21,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/asm/mmu.h: At top level:
/usr/include/asm/mmu.h:13: error: field `sem' has incomplete type
In file included from /usr/include/asm/smp.h:16,
from /usr/include/linux/smp.h:17,
from /usr/include/linux/sched.h:23,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/asm/fixmap.h:72: error: `FIX_ACPI_PAGES' undeclared here
(not in a
function)
/usr/include/asm/fixmap.h:72: error: enumerator value for `FIX_ACPI_END'
not int
eger constant
/usr/include/asm/fixmap.h:84: error: parse error before "pgprot_t"
In file included from /usr/include/asm/smp.h:18,
from /usr/include/linux/smp.h:17,
from /usr/include/linux/sched.h:23,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/asm/mpspec.h:6:25: mach_mpspec.h: No such file or directory
In file included from /usr/include/asm/smp.h:18,
from /usr/include/linux/smp.h:17,
from /usr/include/linux/sched.h:23,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/asm/mpspec.h:8: error: `MAX_MP_BUSSES' undeclared here (not
in a fu
nction)
/usr/include/asm/mpspec.h:9: error: `MAX_MP_BUSSES' undeclared here (not
in a fu
nction)
/usr/include/asm/mpspec.h:10: error: `MAX_MP_BUSSES' undeclared here
(not in a f
unction)
/usr/include/asm/mpspec.h:12: error: `MAX_MP_BUSSES' undeclared here
(not in a f
unction)
/usr/include/asm/mpspec.h:19: error: `MAX_APICS' undeclared here (not in
a funct
ion)
/usr/include/asm/mpspec.h:20: error: `MAX_MP_BUSSES' undeclared here
(not in a f
unction)
/usr/include/asm/mpspec.h:20: error: conflicting types for
`mp_bus_id_to_type'
/usr/include/asm/mpspec.h:8: error: previous declaration of
`mp_bus_id_to_type'
/usr/include/asm/mpspec.h:22: error: `MAX_IRQ_SOURCES' undeclared here
(not in a
function)
/usr/include/asm/mpspec.h:24: error: `MAX_MP_BUSSES' undeclared here
(not in a function)
/usr/include/asm/mpspec.h:24: error: conflicting types for
`mp_bus_id_to_pci_bus
'
/usr/include/asm/mpspec.h:12: error: previous declaration of
`mp_bus_id_to_pci_b
us'
/usr/include/asm/mpspec.h:35: error: parse error before "id"
/usr/include/asm/mpspec.h:36: error: parse error before "address"
/usr/include/asm/mpspec.h:37: error: parse error before "id"
/usr/include/asm/mpspec.h:38: error: parse error before "bus_irq"
/usr/include/asm/mpspec.h:54: error: `MAX_APICS' undeclared here (not in
a funct
ion)
/usr/include/asm/mpspec.h:54: error: variable-size type declared outside
of any
function
In file included from /usr/include/asm/smp.h:20,
from /usr/include/linux/smp.h:17,
from /usr/include/linux/sched.h:23,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/asm/io_apic.h:26: error: parse error before "u32"
/usr/include/asm/io_apic.h:28: error: parse error before "u32"
/usr/include/asm/io_apic.h:34: error: parse error before '}' token
/usr/include/asm/io_apic.h:37: error: parse error before "u32"
/usr/include/asm/io_apic.h:39: error: parse error before "u32"
/usr/include/asm/io_apic.h:45: error: parse error before '}' token
/usr/include/asm/io_apic.h:48: error: parse error before "u32"
/usr/include/asm/io_apic.h:50: error: parse error before "u32"
/usr/include/asm/io_apic.h:54: error: parse error before '}' token
/usr/include/asm/io_apic.h:57: error: parse error before "u32"
/usr/include/asm/io_apic.h:59: error: parse error before "u32"
/usr/include/asm/io_apic.h:62: error: parse error before '}' token
/usr/include/asm/io_apic.h:120: error: `MAX_IRQ_SOURCES' undeclared here
(not in
a function)
/usr/include/asm/io_apic.h:120: error: conflicting types for `mp_irqs'
/usr/include/asm/mpspec.h:22: error: previous declaration of `mp_irqs'
In file included from /usr/include/linux/smp.h:17,
from /usr/include/linux/sched.h:23,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/asm/smp.h:73:26: mach_apicdef.h: No such file or directory
In file included from /usr/include/linux/sched.h:23,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/smp.h: In function `on_each_cpu':
/usr/include/linux/smp.h:65: error: invalid type argument of `->'
/usr/include/linux/smp.h:68: error: invalid type argument of `->'
/usr/include/linux/smp.h:68: error: `TIF_NEED_RESCHED' undeclared (first
use in
this function)
In file included from /usr/include/linux/signal.h:4,
from /usr/include/linux/sched.h:25,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/list.h:576:2: warning: #warning "don't include kernel
headers
in userspace"
In file included from /usr/include/asm/siginfo.h:4,
from /usr/include/linux/signal.h:7,
from /usr/include/linux/sched.h:25,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/asm-generic/siginfo.h: At top level:
/usr/include/asm-generic/siginfo.h:53: error: size of array `_pad' is
too large
In file included from /usr/include/linux/sched.h:29,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/completion.h:15: error: parse error before
"wait_queue_head_t
"
/usr/include/linux/completion.h: In function `init_completion':
/usr/include/linux/completion.h:26: error: dereferencing pointer to
incomplete t
ype
/usr/include/linux/completion.h:27: error: dereferencing pointer to
incomplete t
ype
In file included from /usr/include/linux/sched.h:30,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/pid.h: At top level:
/usr/include/linux/pid.h:18: error: field `task_list' has incomplete
type
/usr/include/linux/pid.h:19: error: field `hash_chain' has incomplete
type
/usr/include/linux/pid.h:24: error: field `pid_chain' has incomplete
type
In file included from /usr/include/linux/sched.h:102,
from /usr/include/linux/module.h:10,
from hello.c:2:
/usr/include/linux/timer.h:11: error: field `entry' has incomplete type
In file included from hello.c:2:
/usr/include/linux/module.h:190: error: field `list' has incomplete type
/usr/include/linux/module.h: In function `MOD_INC_USE_COUNT':
/usr/include/linux/module.h:483: error: `KERN_WARNING' undeclared (first
use in
this function)
/usr/include/linux/module.h:483: error: parse error before string
constant
.. And "that's it" ..
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