From: David Rientjes <rientjes@google.com>
To: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, x86@kernel.org,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v4 2/4] x86: query dynamic DEBUG_PAGEALLOC setting
Date: Wed, 3 Feb 2016 14:48:23 -0800 (PST) [thread overview]
Message-ID: <alpine.DEB.2.10.1602031447430.10331@chino.kir.corp.google.com> (raw)
In-Reply-To: <1454488775-108777-3-git-send-email-borntraeger@de.ibm.com>
On Wed, 3 Feb 2016, Christian Borntraeger wrote:
> We can use debug_pagealloc_enabled() to check if we can map
> the identity mapping with 2MB pages. We can also add the state
> into the dump_stack output.
>
> The patch does not touch the code for the 1GB pages, which ignored
> CONFIG_DEBUG_PAGEALLOC. Do we need to fence this as well?
>
I think it would be an extension of the debug_pagealloc= functionality and
can certainly be introduced if someone is inclined.
> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
> Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: David Rientjes <rientjes@google.com>
next prev parent reply other threads:[~2016-02-03 22:48 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-03 8:39 [PATCH v4 0/4 (resend)] Optimize CONFIG_DEBUG_PAGEALLOC (x86 and s390) Christian Borntraeger
2016-02-03 8:39 ` [PATCH v4 1/4] mm: provide debug_pagealloc_enabled() without CONFIG_DEBUG_PAGEALLOC Christian Borntraeger
2016-02-03 8:39 ` [PATCH v4 2/4] x86: query dynamic DEBUG_PAGEALLOC setting Christian Borntraeger
2016-02-03 22:48 ` David Rientjes [this message]
2016-02-03 8:39 ` [PATCH v4 3/4] s390: " Christian Borntraeger
2016-02-03 22:48 ` David Rientjes
2016-02-03 8:39 ` [PATCH v4 4/4] x86: also use debug_pagealloc_enabled() for free_init_pages Christian Borntraeger
2016-02-03 10:43 ` Thomas Gleixner
2016-02-03 22:50 ` David Rientjes
2016-02-03 8:39 ` [PATCH v4 0/4 (resend)] Optimize CONFIG_DEBUG_PAGEALLOC (x86 and s390) Christian Borntraeger
2016-02-03 8:39 ` [PATCH v4 1/4] mm: provide debug_pagealloc_enabled() without CONFIG_DEBUG_PAGEALLOC Christian Borntraeger
2016-02-03 8:39 ` [PATCH v4 2/4] x86: query dynamic DEBUG_PAGEALLOC setting Christian Borntraeger
2016-02-03 8:39 ` [PATCH v4 3/4] s390: " Christian Borntraeger
2016-02-03 8:39 ` [PATCH v4 4/4] x86: also use debug_pagealloc_enabled() for free_init_pages Christian Borntraeger
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