From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Joonsoo Kim <js1304@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Takashi Iwai <tiwai@suse.com>,
Chris Metcalf <cmetcalf@ezchip.com>,
Christoph Lameter <cl@linux.com>,
linux-api@vger.kernel.org, Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [PATCH 1/5] mm/vmalloc: query dynamic DEBUG_PAGEALLOC setting
Date: Thu, 4 Feb 2016 09:32:14 +0100 [thread overview]
Message-ID: <56B30C8E.200@de.ibm.com> (raw)
In-Reply-To: <1454565386-10489-2-git-send-email-iamjoonsoo.kim@lge.com>
On 02/04/2016 06:56 AM, Joonsoo Kim wrote:
> We can disable debug_pagealloc processing even if the code is complied
> with CONFIG_DEBUG_PAGEALLOC. This patch changes the code to query
> whether it is enabled or not in runtime.
>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
> ---
> mm/vmalloc.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/mm/vmalloc.c b/mm/vmalloc.c
> index fb42a5b..e0e51bd 100644
> --- a/mm/vmalloc.c
> +++ b/mm/vmalloc.c
> @@ -543,10 +543,10 @@ static void vmap_debug_free_range(unsigned long start, unsigned long end)
> * debugging doesn't do a broadcast TLB flush so it is a lot
> * faster).
> */
> -#ifdef CONFIG_DEBUG_PAGEALLOC
> - vunmap_page_range(start, end);
> - flush_tlb_kernel_range(start, end);
> -#endif
> + if (debug_pagealloc_enabled()) {
> + vunmap_page_range(start, end);
> + flush_tlb_kernel_range(start, end);
> + }
> }
>
> /*
>
next prev parent reply other threads:[~2016-02-04 8:32 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-04 5:56 [PATCH 0/5] follow-up "Optimize CONFIG_DEBUG_PAGEALLOC" Joonsoo Kim
2016-02-04 5:56 ` [PATCH 1/5] mm/vmalloc: query dynamic DEBUG_PAGEALLOC setting Joonsoo Kim
2016-02-04 8:32 ` Christian Borntraeger [this message]
2016-02-04 22:18 ` David Rientjes
2016-02-05 16:13 ` Joonsoo Kim
2016-02-04 5:56 ` [PATCH 2/5] mm/slub: " Joonsoo Kim
2016-02-04 8:31 ` Christian Borntraeger
2016-02-04 16:21 ` Joonsoo Kim
2016-02-04 5:56 ` [PATCH 3/5] sound: " Joonsoo Kim
2016-02-04 22:19 ` David Rientjes
2016-02-05 9:26 ` Takashi Iwai
2016-02-04 5:56 ` [PATCH 4/5] powerpc: " Joonsoo Kim
2016-02-04 22:22 ` David Rientjes
2016-02-04 5:56 ` [PATCH 5/5] tile: " Joonsoo Kim
2016-02-09 16:56 ` Chris Metcalf
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