Re: [RFC PATCH] sparse_irq aka dyn_irq


* Yinghai Lu <yinghai@xxxxxxxxxx> wrote:

Andrew Morton wrote:
On Mon, 10 Nov 2008 10:40:33 +0100 Ingo Molnar <mingo@xxxxxxx> wrote:

@@ -987,6 +988,8 @@ void __init mem_init(void)

set_highmem_pages_init();

+ after_bootmem = 1;
this hack can go away once we have a proper percpu_alloc() that can be
used early enough.
where is that fancy patch? current percpu_alloc(), will keep big
pointer in array..., instead of put that pointer in percpu_area

64bit has that after_bootmem already.
or at least introduce a "bootmem agnostic" allocator instead of
open-coding the after_bootmem flag.

Something like:

early_kzalloc()

?

Andrew, any preferences?

My mind reading ain't what it was, and this after_bootmem flag is
write-only in this patch.

So what's all this about?

if i use alloc_bootmem to get some memory, and later after_bootmem,
can I use kfree to free it?

hm, no. If we used alloc_bootmem(), then we must not free it after
after_bootmem has been set.

Ingo
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