We're still coping with GCC < 3.0

We're still coping with GCC < 3.0

[Blaisorblade]

(CC me on replies as I'm not subscribed)
In arch/i386/kernel/irq.c (current git head) I found this comment:

/*
 * These should really be __section__(".bss.page_aligned") as well, but
 * gcc's 3.0 and earlier don't handle that correctly.
 */
static char softirq_stack[NR_CPUS * THREAD_SIZE]
                __attribute__((__aligned__(THREAD_SIZE)));

static char hardirq_stack[NR_CPUS * THREAD_SIZE]
                __attribute__((__aligned__(THREAD_SIZE)));

That should be fixed now that we require GCC 3.0, not?

Btw, there are other such comments, like in include/asm-i386/semaphore.h: 
sema_init (for GCC 2.7!). That one might not be the case to fix because of the 
increased stack usage

I've seen other similar tests around, so I thought that it'd be useful to 
centralize all tests for GCC versions to headers like include/compiler.h so 
they're promptly removed when deprecating old compilers.

What about this?
-- 
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Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
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Re: We're still coping with GCC < 3.0

[Oleg Verych]

Hallo.

On 2006-11-17, someone with nick Blaisorblade wrote:
> In arch/i386/kernel/irq.c (current git head) I found this comment:
>
> /*
>  * These should really be __section__(".bss.page_aligned") as well, but
>  * gcc's 3.0 and earlier don't handle that correctly.
>  */
> static char softirq_stack[NR_CPUS * THREAD_SIZE]
>                 __attribute__((__aligned__(THREAD_SIZE)));
>
> static char hardirq_stack[NR_CPUS * THREAD_SIZE]
>                 __attribute__((__aligned__(THREAD_SIZE)));
>
> That should be fixed now that we require GCC 3.0, not?
>
> Btw, there are other such comments, like in include/asm-i386/semaphore.h: 
> sema_init (for GCC 2.7!). That one might not be the case to fix because of the 
> increased stack usage
>
> I've seen other similar tests around, so I thought that it'd be useful to 
> centralize all tests for GCC versions to headers like include/compiler.h so 
> they're promptly removed when deprecating old compilers.
>
> What about this?

Tested patches to Andrew Morton and code maintainers.
See also:
<http://marc.theaimsgroup.com/?l=linux-kernel&m=116315825009126&w=2>

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