From: lkp@intel.com (kbuild test robot)
To: linux-riscv@lists.infradead.org
Subject: [PATCH -next 2/3] mm: speed up mremap by 20x on large regions (v4)
Date: Sun, 4 Nov 2018 00:56:59 +0800 [thread overview]
Message-ID: <201811040056.QfAjkno6%fengguang.wu@intel.com> (raw)
In-Reply-To: <20181103040041.7085-3-joelaf@google.com>
Hi Joel,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on next-20181102]
url: https://github.com/0day-ci/linux/commits/Joel-Fernandes/Add-support-for-fast-mremap/20181103-224908
config: openrisc-or1ksim_defconfig (attached as .config)
compiler: or1k-linux-gcc (GCC) 6.0.0 20160327 (experimental)
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=openrisc
All errors (new ones prefixed by >>):
mm/mremap.c: In function 'move_normal_pmd':
>> mm/mremap.c:229:2: error: implicit declaration of function 'set_pmd_at' [-Werror=implicit-function-declaration]
set_pmd_at(mm, new_addr, new_pmd, pmd);
^~~~~~~~~~
cc1: some warnings being treated as errors
vim +/set_pmd_at +229 mm/mremap.c
193
194 static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr,
195 unsigned long new_addr, unsigned long old_end,
196 pmd_t *old_pmd, pmd_t *new_pmd)
197 {
198 spinlock_t *old_ptl, *new_ptl;
199 struct mm_struct *mm = vma->vm_mm;
200 pmd_t pmd;
201
202 if ((old_addr & ~PMD_MASK) || (new_addr & ~PMD_MASK)
203 || old_end - old_addr < PMD_SIZE)
204 return false;
205
206 /*
207 * The destination pmd shouldn't be established, free_pgtables()
208 * should have release it.
209 */
210 if (WARN_ON(!pmd_none(*new_pmd)))
211 return false;
212
213 /*
214 * We don't have to worry about the ordering of src and dst
215 * ptlocks because exclusive mmap_sem prevents deadlock.
216 */
217 old_ptl = pmd_lock(vma->vm_mm, old_pmd);
218 new_ptl = pmd_lockptr(mm, new_pmd);
219 if (new_ptl != old_ptl)
220 spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
221
222 /* Clear the pmd */
223 pmd = *old_pmd;
224 pmd_clear(old_pmd);
225
226 VM_BUG_ON(!pmd_none(*new_pmd));
227
228 /* Set the new pmd */
> 229 set_pmd_at(mm, new_addr, new_pmd, pmd);
230 flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE);
231 if (new_ptl != old_ptl)
232 spin_unlock(new_ptl);
233 spin_unlock(old_ptl);
234
235 return true;
236 }
237
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
-------------- next part --------------
A non-text attachment was scrubbed...
Name: .config.gz
Type: application/gzip
Size: 7869 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-riscv/attachments/20181104/26eafdad/attachment.gz>
WARNING: multiple messages have this Message-ID (diff)
From: kbuild test robot <lkp@intel.com>
To: Joel Fernandes <joel@joelfernandes.org>
Cc: linux-mips@linux-mips.org, Rich Felker <dalias@libc.org>,
linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Will Deacon <will.deacon@arm.com>,
Michal Hocko <mhocko@kernel.org>,
linux-mm@kvack.org, lokeshgidra@google.com,
"Joel Fernandes \(Google\)" <joel@joelfernandes.org>,
linux-riscv@lists.infradead.org, elfring@users.sourceforge.net,
Jonas Bonn <jonas@southpole.se>,
kvmarm@lists.cs.columbia.edu, dancol@google.com,
Yoshinori Sato <ysato@users.sourceforge.jp>,
sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org,
linux-hexagon@vger.kernel.org, Helge Deller <deller@gmx.de>,
"maintainer:X86 ARCHITECTURE \(32-BIT AND 64-BIT\)"
<x86@kernel.org>,
hughd@google.com, "James E.J. Bottomley" <jejb@parisc-linux.org>,
kasan-dev@googlegroups.com, anton.ivanov@kot-begemot.co.uk,
Ingo Molnar <mingo@redhat.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
linux-snps-arc@lists.infradead.org, kernel-team@android.com,
Sam Creasey <sammy@sammy.net>, Fenghua Yu <fenghua.yu@intel.com>,
linux-s390@vger.kernel.org, Jeff Dike <jdike@addtoit.com>,
linux-um@lists.infradead.org,
Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>,
Julia Lawall <Julia.Lawall@lip6.fr>,
linux-m68k@lists.linux-m68k.org, Borislav Petkov <bp@alien8.de>,
Andy Lutomirski <luto@kernel.org>,
nios2-dev@lists.rocketboards.org,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Stafford Horne <shorne@gmail.com>, Guan Xuetao <gxt@pku.edu.cn>,
Chris Zankel <chris@zankel.net>, Tony Luck <tony.luck@intel.com>,
Richard Weinberger <richard@nod.at>,
linux-parisc@vger.kernel.org, Max Filippov <jcmvbkbc@gmail.com>,
pantin@google.com, linux-kernel@vger.kernel.org,
minchan@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
kbuild-all@01.org, linux-alpha@vger.kernel.org,
Ley Foon Tan <lftan@altera.com>,
akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH -next 2/3] mm: speed up mremap by 20x on large regions (v4)
Date: Sun, 4 Nov 2018 00:56:59 +0800 [thread overview]
Message-ID: <201811040056.QfAjkno6%fengguang.wu@intel.com> (raw)
Message-ID: <20181103165659.fFhtcXX2PtJjg55m2HGJworjEQI8VLMrqhCIIi1F20w@z> (raw)
In-Reply-To: <20181103040041.7085-3-joelaf@google.com>
[-- Attachment #1: Type: text/plain, Size: 2494 bytes --]
Hi Joel,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on next-20181102]
url: https://github.com/0day-ci/linux/commits/Joel-Fernandes/Add-support-for-fast-mremap/20181103-224908
config: openrisc-or1ksim_defconfig (attached as .config)
compiler: or1k-linux-gcc (GCC) 6.0.0 20160327 (experimental)
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=openrisc
All errors (new ones prefixed by >>):
mm/mremap.c: In function 'move_normal_pmd':
>> mm/mremap.c:229:2: error: implicit declaration of function 'set_pmd_at' [-Werror=implicit-function-declaration]
set_pmd_at(mm, new_addr, new_pmd, pmd);
^~~~~~~~~~
cc1: some warnings being treated as errors
vim +/set_pmd_at +229 mm/mremap.c
193
194 static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long old_addr,
195 unsigned long new_addr, unsigned long old_end,
196 pmd_t *old_pmd, pmd_t *new_pmd)
197 {
198 spinlock_t *old_ptl, *new_ptl;
199 struct mm_struct *mm = vma->vm_mm;
200 pmd_t pmd;
201
202 if ((old_addr & ~PMD_MASK) || (new_addr & ~PMD_MASK)
203 || old_end - old_addr < PMD_SIZE)
204 return false;
205
206 /*
207 * The destination pmd shouldn't be established, free_pgtables()
208 * should have release it.
209 */
210 if (WARN_ON(!pmd_none(*new_pmd)))
211 return false;
212
213 /*
214 * We don't have to worry about the ordering of src and dst
215 * ptlocks because exclusive mmap_sem prevents deadlock.
216 */
217 old_ptl = pmd_lock(vma->vm_mm, old_pmd);
218 new_ptl = pmd_lockptr(mm, new_pmd);
219 if (new_ptl != old_ptl)
220 spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
221
222 /* Clear the pmd */
223 pmd = *old_pmd;
224 pmd_clear(old_pmd);
225
226 VM_BUG_ON(!pmd_none(*new_pmd));
227
228 /* Set the new pmd */
> 229 set_pmd_at(mm, new_addr, new_pmd, pmd);
230 flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE);
231 if (new_ptl != old_ptl)
232 spin_unlock(new_ptl);
233 spin_unlock(old_ptl);
234
235 return true;
236 }
237
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 7869 bytes --]
[-- Attachment #3: Type: text/plain, Size: 161 bytes --]
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2018-11-03 16:56 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-03 4:00 [PATCH -next 0/3] Add support for fast mremap Joel Fernandes
2018-11-03 4:00 ` Joel Fernandes
2018-11-03 4:00 ` [PATCH -next 1/3] mm: treewide: remove unused address argument from pte_alloc functions (v2) Joel Fernandes
2018-11-03 4:00 ` Joel Fernandes
2018-11-03 12:51 ` [PATCH -next v2 1/3] mm: treewide: remove unused address argument from pte_alloc functions SF Markus Elfring
2018-11-03 12:51 ` SF Markus Elfring
2018-11-03 4:00 ` [PATCH -next 2/3] mm: speed up mremap by 20x on large regions (v4) Joel Fernandes
2018-11-03 4:00 ` Joel Fernandes
2018-11-03 16:45 ` kbuild test robot
2018-11-03 16:45 ` kbuild test robot
2018-11-03 16:56 ` kbuild test robot [this message]
2018-11-03 16:56 ` kbuild test robot
2018-11-03 4:00 ` [PATCH -next 3/3] mm: select HAVE_MOVE_PMD in x86 for faster mremap Joel Fernandes
2018-11-03 4:00 ` Joel Fernandes
2018-11-03 9:15 ` [PATCH -next 0/3] Add support for fast mremap Richard Weinberger
2018-11-03 9:15 ` Richard Weinberger
2018-11-03 9:24 ` Anton Ivanov
2018-11-03 9:24 ` Anton Ivanov
2018-11-03 15:20 ` Joel Fernandes
2018-11-03 15:20 ` Joel Fernandes
2018-11-03 18:32 ` Joel Fernandes
2018-11-03 18:32 ` Joel Fernandes
2018-11-04 6:56 ` William Kucharski
2018-11-04 6:56 ` William Kucharski
2018-11-06 4:36 ` Joel Fernandes
2018-11-06 4:36 ` Joel Fernandes
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=201811040056.QfAjkno6%fengguang.wu@intel.com \
--to=lkp@intel.com \
--cc=linux-riscv@lists.infradead.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).