* [linux-next:master 5141/5361] include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type
@ 2019-02-01 16:14 kbuild test robot
2019-02-01 21:47 ` Andrew Morton
2019-02-01 22:48 ` Balbir Singh
0 siblings, 2 replies; 6+ messages in thread
From: kbuild test robot @ 2019-02-01 16:14 UTC (permalink / raw)
To: Jérôme Glisse
Cc: kbuild-all, Andrew Morton, Linux Memory Management List
[-- Attachment #1: Type: text/plain, Size: 1889 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 9fe36dd579c794ae5f1c236293c55fb6847e9654
commit: a3402cb621c1b3908600d3f364e991a6c5a8c06e [5141/5361] mm/hmm: improve driver API to work and wait over a range
config: x86_64-randconfig-b0-02012138 (attached as .config)
compiler: gcc-8 (Debian 8.2.0-14) 8.2.0
reproduce:
git checkout a3402cb621c1b3908600d3f364e991a6c5a8c06e
# save the attached .config to linux build tree
make ARCH=x86_64
All errors (new ones prefixed by >>):
In file included from kernel/memremap.c:14:
>> include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type
struct mmu_notifier mmu_notifier;
^~~~~~~~~~~~
vim +/mmu_notifier +102 include/linux/hmm.h
81
82
83 /*
84 * struct hmm - HMM per mm struct
85 *
86 * @mm: mm struct this HMM struct is bound to
87 * @lock: lock protecting ranges list
88 * @ranges: list of range being snapshotted
89 * @mirrors: list of mirrors for this mm
90 * @mmu_notifier: mmu notifier to track updates to CPU page table
91 * @mirrors_sem: read/write semaphore protecting the mirrors list
92 * @wq: wait queue for user waiting on a range invalidation
93 * @notifiers: count of active mmu notifiers
94 * @dead: is the mm dead ?
95 */
96 struct hmm {
97 struct mm_struct *mm;
98 struct kref kref;
99 struct mutex lock;
100 struct list_head ranges;
101 struct list_head mirrors;
> 102 struct mmu_notifier mmu_notifier;
103 struct rw_semaphore mirrors_sem;
104 wait_queue_head_t wq;
105 long notifiers;
106 bool dead;
107 };
108
---
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: 28256 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [linux-next:master 5141/5361] include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type
2019-02-01 16:14 [linux-next:master 5141/5361] include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type kbuild test robot
@ 2019-02-01 21:47 ` Andrew Morton
2019-02-01 22:04 ` Jerome Glisse
2019-02-01 22:48 ` Balbir Singh
1 sibling, 1 reply; 6+ messages in thread
From: Andrew Morton @ 2019-02-01 21:47 UTC (permalink / raw)
To: kbuild test robot
Cc: Jérôme Glisse, kbuild-all, Linux Memory Management List
On Sat, 2 Feb 2019 00:14:13 +0800 kbuild test robot <lkp@intel.com> wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head: 9fe36dd579c794ae5f1c236293c55fb6847e9654
> commit: a3402cb621c1b3908600d3f364e991a6c5a8c06e [5141/5361] mm/hmm: improve driver API to work and wait over a range
> config: x86_64-randconfig-b0-02012138 (attached as .config)
> compiler: gcc-8 (Debian 8.2.0-14) 8.2.0
> reproduce:
> git checkout a3402cb621c1b3908600d3f364e991a6c5a8c06e
> # save the attached .config to linux build tree
> make ARCH=x86_64
>
> All errors (new ones prefixed by >>):
>
> In file included from kernel/memremap.c:14:
> >> include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type
> struct mmu_notifier mmu_notifier;
I can't reproduce this with that .config.
hmm.h includes mmu_notifier.h so I can't eyeball why this would happen.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [linux-next:master 5141/5361] include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type
2019-02-01 21:47 ` Andrew Morton
@ 2019-02-01 22:04 ` Jerome Glisse
0 siblings, 0 replies; 6+ messages in thread
From: Jerome Glisse @ 2019-02-01 22:04 UTC (permalink / raw)
To: Andrew Morton; +Cc: kbuild test robot, kbuild-all, Linux Memory Management List
> On Sat, 2 Feb 2019 00:14:13 +0800 kbuild test robot <lkp@intel.com> wrote:
>
> > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> > master
> > head: 9fe36dd579c794ae5f1c236293c55fb6847e9654
> > commit: a3402cb621c1b3908600d3f364e991a6c5a8c06e [5141/5361] mm/hmm:
> > improve driver API to work and wait over a range
> > config: x86_64-randconfig-b0-02012138 (attached as .config)
> > compiler: gcc-8 (Debian 8.2.0-14) 8.2.0
> > reproduce:
> > git checkout a3402cb621c1b3908600d3f364e991a6c5a8c06e
> > # save the attached .config to linux build tree
> > make ARCH=x86_64
> >
> > All errors (new ones prefixed by >>):
> >
> > In file included from kernel/memremap.c:14:
> > >> include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete
> > >> type
> > struct mmu_notifier mmu_notifier;
>
> I can't reproduce this with that .config.
>
> hmm.h includes mmu_notifier.h so I can't eyeball why this would happen.
>
I am on pto, i will try to look it over in idle time can you send me
the config, or can i download it from somewhere ?
If i had to guess it is because this random config enable HMM without
any of the other HMM bits so adding: select MMU_NOTIFIER to config HMM
will fix it.
Cheers,
Jérôme
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [linux-next:master 5141/5361] include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type
2019-02-01 16:14 [linux-next:master 5141/5361] include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type kbuild test robot
2019-02-01 21:47 ` Andrew Morton
@ 2019-02-01 22:48 ` Balbir Singh
2019-02-01 23:08 ` Jerome Glisse
1 sibling, 1 reply; 6+ messages in thread
From: Balbir Singh @ 2019-02-01 22:48 UTC (permalink / raw)
To: kbuild test robot
Cc: Jérôme Glisse, kbuild-all, Andrew Morton,
Linux Memory Management List
On Sat, Feb 02, 2019 at 12:14:13AM +0800, kbuild test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head: 9fe36dd579c794ae5f1c236293c55fb6847e9654
> commit: a3402cb621c1b3908600d3f364e991a6c5a8c06e [5141/5361] mm/hmm: improve driver API to work and wait over a range
> config: x86_64-randconfig-b0-02012138 (attached as .config)
> compiler: gcc-8 (Debian 8.2.0-14) 8.2.0
> reproduce:
> git checkout a3402cb621c1b3908600d3f364e991a6c5a8c06e
> # save the attached .config to linux build tree
> make ARCH=x86_64
>
> All errors (new ones prefixed by >>):
>
> In file included from kernel/memremap.c:14:
> >> include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type
> struct mmu_notifier mmu_notifier;
> ^~~~~~~~~~~~
>
> vim +/mmu_notifier +102 include/linux/hmm.h
>
> 81
> 82
> 83 /*
> 84 * struct hmm - HMM per mm struct
> 85 *
> 86 * @mm: mm struct this HMM struct is bound to
> 87 * @lock: lock protecting ranges list
> 88 * @ranges: list of range being snapshotted
> 89 * @mirrors: list of mirrors for this mm
> 90 * @mmu_notifier: mmu notifier to track updates to CPU page table
> 91 * @mirrors_sem: read/write semaphore protecting the mirrors list
> 92 * @wq: wait queue for user waiting on a range invalidation
> 93 * @notifiers: count of active mmu notifiers
> 94 * @dead: is the mm dead ?
> 95 */
> 96 struct hmm {
> 97 struct mm_struct *mm;
> 98 struct kref kref;
> 99 struct mutex lock;
> 100 struct list_head ranges;
> 101 struct list_head mirrors;
> > 102 struct mmu_notifier mmu_notifier;
Only HMM_MIRROR depends on MMU_NOTIFIER, but mmu_notifier in
the hmm struct is not conditionally dependent HMM_MIRROR.
The shared config has HMM_MIRROR disabled
Balbir
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [linux-next:master 5141/5361] include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type
2019-02-01 22:48 ` Balbir Singh
@ 2019-02-01 23:08 ` Jerome Glisse
2019-02-02 0:16 ` Balbir Singh
0 siblings, 1 reply; 6+ messages in thread
From: Jerome Glisse @ 2019-02-01 23:08 UTC (permalink / raw)
To: Balbir Singh
Cc: kbuild test robot, kbuild-all, Andrew Morton,
Linux Memory Management List
----- Original Message -----
> On Sat, Feb 02, 2019 at 12:14:13AM +0800, kbuild test robot wrote:
> > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> > master
> > head: 9fe36dd579c794ae5f1c236293c55fb6847e9654
> > commit: a3402cb621c1b3908600d3f364e991a6c5a8c06e [5141/5361] mm/hmm:
> > improve driver API to work and wait over a range
> > config: x86_64-randconfig-b0-02012138 (attached as .config)
> > compiler: gcc-8 (Debian 8.2.0-14) 8.2.0
> > reproduce:
> > git checkout a3402cb621c1b3908600d3f364e991a6c5a8c06e
> > # save the attached .config to linux build tree
> > make ARCH=x86_64
> >
> > All errors (new ones prefixed by >>):
> >
> > In file included from kernel/memremap.c:14:
> > >> include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete
> > >> type
> > struct mmu_notifier mmu_notifier;
> > ^~~~~~~~~~~~
> >
> > vim +/mmu_notifier +102 include/linux/hmm.h
> >
> > 81
> > 82
> > 83 /*
> > 84 * struct hmm - HMM per mm struct
> > 85 *
> > 86 * @mm: mm struct this HMM struct is bound to
> > 87 * @lock: lock protecting ranges list
> > 88 * @ranges: list of range being snapshotted
> > 89 * @mirrors: list of mirrors for this mm
> > 90 * @mmu_notifier: mmu notifier to track updates to CPU page table
> > 91 * @mirrors_sem: read/write semaphore protecting the mirrors list
> > 92 * @wq: wait queue for user waiting on a range invalidation
> > 93 * @notifiers: count of active mmu notifiers
> > 94 * @dead: is the mm dead ?
> > 95 */
> > 96 struct hmm {
> > 97 struct mm_struct *mm;
> > 98 struct kref kref;
> > 99 struct mutex lock;
> > 100 struct list_head ranges;
> > 101 struct list_head mirrors;
> > > 102 struct mmu_notifier mmu_notifier;
>
> Only HMM_MIRROR depends on MMU_NOTIFIER, but mmu_notifier in
> the hmm struct is not conditionally dependent HMM_MIRROR.
> The shared config has HMM_MIRROR disabled
>
> Balbir
>
>
I am bad with kconfig simplest fix from my pov is adding
select MMU_NOTIFIER to HMM config as anyway anything that
will have HMM will need notifier.
config HMM
bool
+ select MMU_NOTIFIER
select MIGRATE_VMA_HELPER
Cheers,
Jérôme
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [linux-next:master 5141/5361] include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type
2019-02-01 23:08 ` Jerome Glisse
@ 2019-02-02 0:16 ` Balbir Singh
0 siblings, 0 replies; 6+ messages in thread
From: Balbir Singh @ 2019-02-02 0:16 UTC (permalink / raw)
To: Jerome Glisse
Cc: kbuild test robot, kbuild-all, Andrew Morton,
Linux Memory Management List
On Fri, Feb 01, 2019 at 06:08:06PM -0500, Jerome Glisse wrote:
>
>
> ----- Original Message -----
> > On Sat, Feb 02, 2019 at 12:14:13AM +0800, kbuild test robot wrote:
> > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> > > master
> > > head: 9fe36dd579c794ae5f1c236293c55fb6847e9654
> > > commit: a3402cb621c1b3908600d3f364e991a6c5a8c06e [5141/5361] mm/hmm:
> > > improve driver API to work and wait over a range
> > > config: x86_64-randconfig-b0-02012138 (attached as .config)
> > > compiler: gcc-8 (Debian 8.2.0-14) 8.2.0
> > > reproduce:
> > > git checkout a3402cb621c1b3908600d3f364e991a6c5a8c06e
> > > # save the attached .config to linux build tree
> > > make ARCH=x86_64
> > >
> > > All errors (new ones prefixed by >>):
> > >
> > > In file included from kernel/memremap.c:14:
> > > >> include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete
> > > >> type
> > > struct mmu_notifier mmu_notifier;
> > > ^~~~~~~~~~~~
> > >
> > > vim +/mmu_notifier +102 include/linux/hmm.h
> > >
> > > 81
> > > 82
> > > 83 /*
> > > 84 * struct hmm - HMM per mm struct
> > > 85 *
> > > 86 * @mm: mm struct this HMM struct is bound to
> > > 87 * @lock: lock protecting ranges list
> > > 88 * @ranges: list of range being snapshotted
> > > 89 * @mirrors: list of mirrors for this mm
> > > 90 * @mmu_notifier: mmu notifier to track updates to CPU page table
> > > 91 * @mirrors_sem: read/write semaphore protecting the mirrors list
> > > 92 * @wq: wait queue for user waiting on a range invalidation
> > > 93 * @notifiers: count of active mmu notifiers
> > > 94 * @dead: is the mm dead ?
> > > 95 */
> > > 96 struct hmm {
> > > 97 struct mm_struct *mm;
> > > 98 struct kref kref;
> > > 99 struct mutex lock;
> > > 100 struct list_head ranges;
> > > 101 struct list_head mirrors;
> > > > 102 struct mmu_notifier mmu_notifier;
> >
> > Only HMM_MIRROR depends on MMU_NOTIFIER, but mmu_notifier in
> > the hmm struct is not conditionally dependent HMM_MIRROR.
> > The shared config has HMM_MIRROR disabled
> >
> > Balbir
> >
> >
>
> I am bad with kconfig simplest fix from my pov is adding
> select MMU_NOTIFIER to HMM config as anyway anything that
> will have HMM will need notifier.
>
> config HMM
> bool
> + select MMU_NOTIFIER
> select MIGRATE_VMA_HELPER
>
Yes
Acked-by: Balbir Singh <bsingharora@gmail.com>
>
> Cheers,
> Jérôme
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2019-02-02 0:16 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2019-02-01 16:14 [linux-next:master 5141/5361] include/linux/hmm.h:102:22: error: field 'mmu_notifier' has incomplete type kbuild test robot
2019-02-01 21:47 ` Andrew Morton
2019-02-01 22:04 ` Jerome Glisse
2019-02-01 22:48 ` Balbir Singh
2019-02-01 23:08 ` Jerome Glisse
2019-02-02 0:16 ` Balbir Singh
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