Mikael Pettersson (on Sun, 11 Jun 2006 02:51:21 +0200 (MEST)) wrote:
>On Sat, 10 Jun 2006 12:13:35 -0700, Randy.Dunlap wrote:
>>On Sat, 10 Jun 2006 14:11:42 +0200 (MEST) Mikael Pettersson wrote:
>>
>>> While compiling 2.6.17-rc6 for a 486 with an NE2000 ISA ethernet card, I got:
>>>
>>> WARNING: drivers/net/ne.o - Section mismatch: reference to .init.data:isapnp_clone_list from .text between 'init_module' (at offset 0x158) and 'ne_block_input'
>>> WARNING: drivers/net/ne.o - Section mismatch: reference to .init.data:isapnp_clone_list from .text between 'init_module' (at offset 0x176) and 'ne_block_input'
>>> WARNING: drivers/net/ne.o - Section mismatch: reference to .init.data:isapnp_clone_list from .text between 'init_module' (at offset 0x183) and 'ne_block_input'
>>> WARNING: drivers/net/ne.o - Section mismatch: reference to .init.data:isapnp_clone_list from .text between 'init_module' (at offset 0x1ea) and 'ne_block_input'
>>> WARNING: drivers/net/ne.o - Section mismatch: reference to .init.data:isapnp_clone_list from .text between 'init_module' (at offset 0x251) and 'ne_block_input'
>>> WARNING: drivers/net/ne.o - Section mismatch: reference to .init.text: from .text between 'init_module' (at offset 0x266) and 'ne_block_input'
>>> WARNING: drivers/net/ne.o - Section mismatch: reference to .init.text: from .text between 'init_module' (at offset 0x29b) and 'ne_block_input'
>>>
>>> Not sure how serious this is; the driver seems to work fine later on.
>>
>>Doesn't look serious. init_module() is not __init, but it calls
>>some __init functions and touches some __initdata.
>>
>>BTW, I would be happy to see some consistent results from modpost
>>section checking. I don't see all of these warnings (I see only 1)
>>when using gcc 3.3.6. What gcc version are you using?
>>Does that matter? (not directed at anyone in particular)
>
>The messages above are from when I used gcc-4.1.1.
>With gcc-3.2.3 I only see a single warning.
Probably over enthusiastic gcc inlining. gcc 4 will inline functions
that are not declared as inline. That is not so bad, except that some
versions of gcc will ignore a mismatch in function attributes and
inline a __init function into normal text, generating additional
section mismatches. For a specific example, see
http://marc.theaimsgroup.com/?l=linux-kernel&m=113824309203482&w=2
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