From: Christian Borntraeger <borntraeger@de.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: akpm@linux-foundation.org, linux-mm@kvack.org,
linux-arch@vger.kernel.org, linux-s390@vger.kernel.org,
x86@kernel.org, linuxppc-dev@lists.ozlabs.org,
davem@davemloft.net, Joonsoo Kim <iamjoonsoo.kim@lge.com>,
davej@codemonkey.org.uk,
Christian Borntraeger <borntraeger@de.ibm.com>
Subject: [PATCH v2 1/3] mm: provide debug_pagealloc_enabled() without CONFIG_DEBUG_PAGEALLOC
Date: Wed, 27 Jan 2016 09:50:16 +0100 [thread overview]
Message-ID: <1453884618-33852-2-git-send-email-borntraeger@de.ibm.com> (raw)
In-Reply-To: <1453884618-33852-1-git-send-email-borntraeger@de.ibm.com>
We can provide debug_pagealloc_enabled() also if CONFIG_DEBUG_PAGEALLOC
is not set. It will return false in that case.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: David Rientjes <rientjes@google.com>
---
include/linux/mm.h | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7783073..56cab4e 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2147,13 +2147,18 @@ kernel_map_pages(struct page *page, int numpages, int enable)
#ifdef CONFIG_HIBERNATION
extern bool kernel_page_present(struct page *page);
#endif /* CONFIG_HIBERNATION */
-#else
+#else /* CONFIG_DEBUG_PAGEALLOC */
+static inline bool debug_pagealloc_enabled(void)
+{
+ return false;
+}
+
static inline void
kernel_map_pages(struct page *page, int numpages, int enable) {}
#ifdef CONFIG_HIBERNATION
static inline bool kernel_page_present(struct page *page) { return true; }
#endif /* CONFIG_HIBERNATION */
-#endif
+#endif /* CONFIG_DEBUG_PAGEALLOC */
#ifdef __HAVE_ARCH_GATE_AREA
extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm);
--
2.3.0
WARNING: multiple messages have this Message-ID (diff)
From: Christian Borntraeger <borntraeger@de.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: akpm@linux-foundation.org, linux-mm@kvack.org,
linux-arch@vger.kernel.org, linux-s390@vger.kernel.org,
x86@kernel.org, linuxppc-dev@lists.ozlabs.org,
davem@davemloft.net, Joonsoo Kim <iamjoonsoo.kim@lge.com>,
davej@codemonkey.org.uk,
Christian Borntraeger <borntraeger@de.ibm.com>
Subject: [PATCH v2 1/3] mm: provide debug_pagealloc_enabled() without CONFIG_DEBUG_PAGEALLOC
Date: Wed, 27 Jan 2016 09:50:16 +0100 [thread overview]
Message-ID: <1453884618-33852-2-git-send-email-borntraeger@de.ibm.com> (raw)
In-Reply-To: <1453884618-33852-1-git-send-email-borntraeger@de.ibm.com>
We can provide debug_pagealloc_enabled() also if CONFIG_DEBUG_PAGEALLOC
is not set. It will return false in that case.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: David Rientjes <rientjes@google.com>
---
include/linux/mm.h | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7783073..56cab4e 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2147,13 +2147,18 @@ kernel_map_pages(struct page *page, int numpages, int enable)
#ifdef CONFIG_HIBERNATION
extern bool kernel_page_present(struct page *page);
#endif /* CONFIG_HIBERNATION */
-#else
+#else /* CONFIG_DEBUG_PAGEALLOC */
+static inline bool debug_pagealloc_enabled(void)
+{
+ return false;
+}
+
static inline void
kernel_map_pages(struct page *page, int numpages, int enable) {}
#ifdef CONFIG_HIBERNATION
static inline bool kernel_page_present(struct page *page) { return true; }
#endif /* CONFIG_HIBERNATION */
-#endif
+#endif /* CONFIG_DEBUG_PAGEALLOC */
#ifdef __HAVE_ARCH_GATE_AREA
extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm);
--
2.3.0
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2016-01-27 8:51 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-27 8:50 [PATCH v2 0/3] Optimize CONFIG_DEBUG_PAGEALLOC Christian Borntraeger
2016-01-27 8:50 ` Christian Borntraeger
2016-01-27 8:50 ` Christian Borntraeger [this message]
2016-01-27 8:50 ` [PATCH v2 1/3] mm: provide debug_pagealloc_enabled() without CONFIG_DEBUG_PAGEALLOC Christian Borntraeger
2016-01-27 9:15 ` Thomas Gleixner
2016-01-27 9:15 ` Thomas Gleixner
2016-01-27 8:50 ` [PATCH v2 2/3] x86: query dynamic DEBUG_PAGEALLOC setting Christian Borntraeger
2016-01-27 8:50 ` Christian Borntraeger
2016-01-27 9:16 ` Thomas Gleixner
2016-01-27 9:16 ` Thomas Gleixner
2016-01-27 8:50 ` [PATCH v2 3/3] s390: " Christian Borntraeger
2016-01-27 8:50 ` Christian Borntraeger
2016-01-27 9:55 ` Heiko Carstens
2016-01-27 9:55 ` Heiko Carstens
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1453884618-33852-2-git-send-email-borntraeger@de.ibm.com \
--to=borntraeger@de.ibm.com \
--cc=akpm@linux-foundation.org \
--cc=davej@codemonkey.org.uk \
--cc=davem@davemloft.net \
--cc=iamjoonsoo.kim@lge.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-s390@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.