From: Andrew Morton <akpm@osdl.org>
To: Christoph Lameter <clameter@engr.sgi.com>
Cc: torvalds@osdl.org, hugh@veritas.com, nickpiggin@yahoo.com.au,
linux-mm@kvack.org
Subject: Re: [PATCH] Use deltas to replace atomic inc
Date: Sat, 20 Aug 2005 00:58:43 -0700 [thread overview]
Message-ID: <20050820005843.21ba4d9b.akpm@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.62.0508200033420.20471@schroedinger.engr.sgi.com>
Christoph Lameter <clameter@engr.sgi.com> wrote:
>
> @@ -508,6 +508,16 @@ static int unuse_mm(struct mm_struct *mm
> {
> struct vm_area_struct *vma;
>
> + /*
> + * Ensure that existing deltas are charged to the current mm since
> + * we will charge the next batch manually to the target mm
> + */
> + if (current->mm && mm_counter_updates_pending(current)) {
Is there a race window right here?
> + spin_lock(¤t->mm->page_table_lock);
> + mm_counter_catchup(current, current->mm);
> + spin_unlock(¤t->mm->page_table_lock);
> + }
--
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next prev parent reply other threads:[~2005-08-20 7:58 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-17 22:17 pagefault scalability patches Andrew Morton
2005-08-17 22:19 ` Christoph Lameter
2005-08-17 22:36 ` Linus Torvalds
2005-08-17 22:51 ` Christoph Lameter
2005-08-17 23:01 ` Linus Torvalds
2005-08-17 23:12 ` Christoph Lameter
2005-08-17 23:23 ` Linus Torvalds
2005-08-17 23:31 ` Christoph Lameter
2005-08-17 23:30 ` Andrew Morton
2005-08-17 23:33 ` Christoph Lameter
2005-08-17 23:44 ` Andrew Morton
2005-08-17 23:52 ` Peter Chubb
2005-08-17 23:58 ` Christoph Lameter
2005-08-18 0:47 ` Andrew Morton
2005-08-18 16:09 ` Christoph Lameter
2005-08-22 2:13 ` Benjamin Herrenschmidt
2005-08-18 0:43 ` Andrew Morton
2005-08-18 16:04 ` Christoph Lameter
2005-08-18 20:16 ` Hugh Dickins
2005-08-19 1:22 ` [PATCH] use mm_counter macros for nr_pte since its also under ptl Christoph Lameter
2005-08-19 3:17 ` Andrew Morton
2005-08-19 3:51 ` Christoph Lameter
2005-08-19 1:33 ` pagefault scalability patches Christoph Lameter
2005-08-19 3:53 ` [RFC] Concept for delayed counter updates in mm_struct Christoph Lameter
2005-08-19 4:29 ` Andrew Morton
2005-08-19 4:34 ` Andi Kleen
2005-08-19 4:49 ` Linus Torvalds
2005-08-19 16:06 ` Christoph Lameter
2005-08-20 7:33 ` [PATCH] mm_struct counter deltas in task_struct Christoph Lameter
2005-08-20 7:35 ` [PATCH] Use deltas to replace atomic inc Christoph Lameter
2005-08-20 7:58 ` Andrew Morton [this message]
2005-08-22 3:32 ` Christoph Lameter
2005-08-22 3:48 ` Linus Torvalds
2005-08-22 4:06 ` Christoph Lameter
2005-08-22 4:18 ` Linus Torvalds
2005-08-22 13:23 ` Christoph Lameter
2005-08-22 14:22 ` Hugh Dickins
2005-08-22 15:24 ` Christoph Lameter
2005-08-22 15:43 ` Andi Kleen
2005-08-22 16:24 ` Christoph Lameter
2005-08-22 20:30 ` [PATCH] mm_struct counter deltas V2 Christoph Lameter
2005-08-22 20:31 ` [PATCH] Use deltas to replace atomic inc V2 Christoph Lameter
2005-08-22 2:09 ` pagefault scalability patches Benjamin Herrenschmidt
2005-08-18 2:00 ` Nick Piggin
2005-08-18 8:38 ` Nick Piggin
2005-08-18 16:17 ` Christoph Lameter
2005-08-22 2:04 ` Benjamin Herrenschmidt
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