Messages in this thread Patch in this message | | | Date | Thu, 4 Nov 2004 13:53:18 +1100 | From | Paul Mackerras <> | Subject | Re: [PATCH] PPC64 mmu_context_init needs to run earlier |
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Andrew Morton writes:
> This all seemed to peter out. Did we end up with a more convincing patch?
Yes, the one from Nathan Lynch that uses idr_get_new_above with an argument of 1 rather than 0. Here is the patch:
Using idr_get_new_above in init_new_context lets us get rid of an awkward init function which wasn't running early enough in boot anyway.
Signed-off-by: Nathan Lynch <nathanl@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
diff -puN arch/ppc64/mm/init.c~ppc64-mmu-context-use-idr_get_new_above arch/ppc64/mm/init.c --- linux-2.6.10-rc1-bk12/arch/ppc64/mm/init.c~ppc64-mmu-context-use-idr_get_new_above 2004-11-02 16:28:57.000000000 -0600 +++ linux-2.6.10-rc1-bk12-nathanl/arch/ppc64/mm/init.c 2004-11-02 17:49:08.000000000 -0600 @@ -489,7 +489,7 @@ again: return -ENOMEM; spin_lock(&mmu_context_lock); - err = idr_get_new(&mmu_context_idr, NULL, &index); + err = idr_get_new_above(&mmu_context_idr, NULL, 1, &index); spin_unlock(&mmu_context_lock); if (err == -EAGAIN) @@ -518,19 +518,6 @@ void destroy_context(struct mm_struct *m hugetlb_mm_free_pgd(mm); } -static int __init mmu_context_init(void) -{ - int index; - - /* Reserve the first (invalid) context*/ - idr_pre_get(&mmu_context_idr, GFP_KERNEL); - idr_get_new(&mmu_context_idr, NULL, &index); - BUG_ON(0 != index); - - return 0; -} -arch_initcall(mmu_context_init); - /* * Do very early mm setup. */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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