From: Laurent Dufour <ldufour@linux.ibm.com> To: Jerome Glisse <jglisse@redhat.com> Cc: akpm@linux-foundation.org, mhocko@kernel.org, peterz@infradead.org, kirill@shutemov.name, ak@linux.intel.com, dave@stgolabs.net, jack@suse.cz, Matthew Wilcox <willy@infradead.org>, aneesh.kumar@linux.ibm.com, benh@kernel.crashing.org, mpe@ellerman.id.au, paulus@samba.org, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, hpa@zytor.com, Will Deacon <will.deacon@arm.com>, Sergey Senozhatsky <sergey.senozhatsky@gmail.com>, sergey.senozhatsky.work@gmail.com, Andrea Arcangeli <aarcange@redhat.com>, Alexei Starovoitov <alexei.starovoitov@gmail.com>, kemi.wang@intel.com, Daniel Jordan <daniel.m.jordan@oracle.com>, David Rientjes <rientjes@google.com>, Ganesh Mahendran <opensource.ganesh@gmail.com>, Minchan Kim <minchan@kernel.org>, Punit Agrawal <punitagrawal@gmail.com>, vinayak menon <vinayakm.list@gmail.com>, Yang Shi <yang.shi@linux.alibaba.com>, zhong jiang <zhongjiang@huawei.com>, Haiyan Song <haiyanx.song@intel.com>, Balbir Singh <bsingharora@gmail.com>, sj38.park@gmail.com, Michel Lespinasse <walken@google.com>, Mike Rapoport <rppt@linux.ibm.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, haren@linux.vnet.ibm.com, npiggin@gmail.com, paulmck@linux.vnet.ibm.com, Tim Chen <tim.c.chen@linux.intel.com>, linuxppc-dev@lists.ozlabs.org, x86@kernel.org Subject: Re: [PATCH v12 20/31] mm: introduce vma reference counter Date: Wed, 24 Apr 2019 16:26:06 +0200 [thread overview] Message-ID: <122dd37e-f071-bdc1-b7f4-887d7cee766f@linux.ibm.com> (raw) In-Reply-To: <20190422203647.GK14666@redhat.com> Le 22/04/2019 à 22:36, Jerome Glisse a écrit : > On Tue, Apr 16, 2019 at 03:45:11PM +0200, Laurent Dufour wrote: >> The final goal is to be able to use a VMA structure without holding the >> mmap_sem and to be sure that the structure will not be freed in our back. >> >> The lockless use of the VMA will be done through RCU protection and thus a >> dedicated freeing service is required to manage it asynchronously. >> >> As reported in a 2010's thread [1], this may impact file handling when a >> file is still referenced while the mapping is no more there. As the final >> goal is to handle anonymous VMA in a speculative way and not file backed >> mapping, we could close and free the file pointer in a synchronous way, as >> soon as we are guaranteed to not use it without holding the mmap_sem. For >> sanity reason, in a minimal effort, the vm_file file pointer is unset once >> the file pointer is put. >> >> [1] https://lore.kernel.org/linux-mm/20100104182429.833180340@chello.nl/ >> >> Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com> > > Using kref would have been better from my POV even with RCU freeing > but anyway: > > Reviewed-by: Jérôme Glisse <jglisse@redhat.com> Thanks Jérôme, I think kref is a good option here, I'll give it a try. >> --- >> include/linux/mm.h | 4 ++++ >> include/linux/mm_types.h | 3 +++ >> mm/internal.h | 27 +++++++++++++++++++++++++++ >> mm/mmap.c | 13 +++++++++---- >> 4 files changed, 43 insertions(+), 4 deletions(-) >> >> diff --git a/include/linux/mm.h b/include/linux/mm.h >> index f14b2c9ddfd4..f761a9c65c74 100644 >> --- a/include/linux/mm.h >> +++ b/include/linux/mm.h >> @@ -529,6 +529,9 @@ static inline void vma_init(struct vm_area_struct *vma, struct mm_struct *mm) >> vma->vm_mm = mm; >> vma->vm_ops = &dummy_vm_ops; >> INIT_LIST_HEAD(&vma->anon_vma_chain); >> +#ifdef CONFIG_SPECULATIVE_PAGE_FAULT >> + atomic_set(&vma->vm_ref_count, 1); >> +#endif >> } >> >> static inline void vma_set_anonymous(struct vm_area_struct *vma) >> @@ -1418,6 +1421,7 @@ static inline void INIT_VMA(struct vm_area_struct *vma) >> INIT_LIST_HEAD(&vma->anon_vma_chain); >> #ifdef CONFIG_SPECULATIVE_PAGE_FAULT >> seqcount_init(&vma->vm_sequence); >> + atomic_set(&vma->vm_ref_count, 1); >> #endif >> } >> >> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h >> index 24b3f8ce9e42..6a6159e11a3f 100644 >> --- a/include/linux/mm_types.h >> +++ b/include/linux/mm_types.h >> @@ -285,6 +285,9 @@ struct vm_area_struct { >> /* linked list of VM areas per task, sorted by address */ >> struct vm_area_struct *vm_next, *vm_prev; >> >> +#ifdef CONFIG_SPECULATIVE_PAGE_FAULT >> + atomic_t vm_ref_count; >> +#endif >> struct rb_node vm_rb; >> >> /* >> diff --git a/mm/internal.h b/mm/internal.h >> index 9eeaf2b95166..302382bed406 100644 >> --- a/mm/internal.h >> +++ b/mm/internal.h >> @@ -40,6 +40,33 @@ void page_writeback_init(void); >> >> vm_fault_t do_swap_page(struct vm_fault *vmf); >> >> + >> +extern void __free_vma(struct vm_area_struct *vma); >> + >> +#ifdef CONFIG_SPECULATIVE_PAGE_FAULT >> +static inline void get_vma(struct vm_area_struct *vma) >> +{ >> + atomic_inc(&vma->vm_ref_count); >> +} >> + >> +static inline void put_vma(struct vm_area_struct *vma) >> +{ >> + if (atomic_dec_and_test(&vma->vm_ref_count)) >> + __free_vma(vma); >> +} >> + >> +#else >> + >> +static inline void get_vma(struct vm_area_struct *vma) >> +{ >> +} >> + >> +static inline void put_vma(struct vm_area_struct *vma) >> +{ >> + __free_vma(vma); >> +} >> +#endif /* CONFIG_SPECULATIVE_PAGE_FAULT */ >> + >> void free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *start_vma, >> unsigned long floor, unsigned long ceiling); >> >> diff --git a/mm/mmap.c b/mm/mmap.c >> index f7f6027a7dff..c106440dcae7 100644 >> --- a/mm/mmap.c >> +++ b/mm/mmap.c >> @@ -188,6 +188,12 @@ static inline void mm_write_sequnlock(struct mm_struct *mm) >> } >> #endif /* CONFIG_SPECULATIVE_PAGE_FAULT */ >> >> +void __free_vma(struct vm_area_struct *vma) >> +{ >> + mpol_put(vma_policy(vma)); >> + vm_area_free(vma); >> +} >> + >> /* >> * Close a vm structure and free it, returning the next. >> */ >> @@ -200,8 +206,8 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma) >> vma->vm_ops->close(vma); >> if (vma->vm_file) >> fput(vma->vm_file); >> - mpol_put(vma_policy(vma)); >> - vm_area_free(vma); >> + vma->vm_file = NULL; >> + put_vma(vma); >> return next; >> } >> >> @@ -990,8 +996,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, >> if (next->anon_vma) >> anon_vma_merge(vma, next); >> mm->map_count--; >> - mpol_put(vma_policy(next)); >> - vm_area_free(next); >> + put_vma(next); >> /* >> * In mprotect's case 6 (see comments on vma_merge), >> * we must remove another next too. It would clutter >> -- >> 2.21.0 >> >
WARNING: multiple messages have this Message-ID (diff)
From: Laurent Dufour <ldufour@linux.ibm.com> To: Jerome Glisse <jglisse@redhat.com> Cc: jack@suse.cz, sergey.senozhatsky.work@gmail.com, peterz@infradead.org, Will Deacon <will.deacon@arm.com>, mhocko@kernel.org, linux-mm@kvack.org, paulus@samba.org, Punit Agrawal <punitagrawal@gmail.com>, hpa@zytor.com, Michel Lespinasse <walken@google.com>, Alexei Starovoitov <alexei.starovoitov@gmail.com>, Andrea Arcangeli <aarcange@redhat.com>, ak@linux.intel.com, Minchan Kim <minchan@kernel.org>, aneesh.kumar@linux.ibm.com, x86@kernel.org, Matthew Wilcox <willy@infradead.org>, Daniel Jordan <daniel.m.jordan@oracle.com>, Ingo Molnar <mingo@redhat.com>, David Rientjes <rientjes@google.com>, paulmck@linux.vnet.ibm.com, Haiyan Song <haiyanx.song@intel.com>, npiggin@gmail.com, sj38.park@gmail.com, dave@stgolabs.net, kemi.wang@intel.com, kirill@shutemov.name, Thomas Gleixner <tglx@linutronix.de>, zhong jiang <zhongjiang@huawei.com>, Ganesh Mahendran <opensource.ganesh@gmail.com>, Yang Shi <yang.shi@linux.alibaba.com>, Mike Rapoport <rppt@linux.ibm.com>, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky <sergey.senozhatsky@gmail.com>, vinayak menon <vinayakm.list@gmail.com>, akpm@linux-foundation.org, Tim Chen <tim.c.chen@linux.intel.com>, haren@linux.vnet.ibm.com Subject: Re: [PATCH v12 20/31] mm: introduce vma reference counter Date: Wed, 24 Apr 2019 16:26:06 +0200 [thread overview] Message-ID: <122dd37e-f071-bdc1-b7f4-887d7cee766f@linux.ibm.com> (raw) In-Reply-To: <20190422203647.GK14666@redhat.com> Le 22/04/2019 à 22:36, Jerome Glisse a écrit : > On Tue, Apr 16, 2019 at 03:45:11PM +0200, Laurent Dufour wrote: >> The final goal is to be able to use a VMA structure without holding the >> mmap_sem and to be sure that the structure will not be freed in our back. >> >> The lockless use of the VMA will be done through RCU protection and thus a >> dedicated freeing service is required to manage it asynchronously. >> >> As reported in a 2010's thread [1], this may impact file handling when a >> file is still referenced while the mapping is no more there. As the final >> goal is to handle anonymous VMA in a speculative way and not file backed >> mapping, we could close and free the file pointer in a synchronous way, as >> soon as we are guaranteed to not use it without holding the mmap_sem. For >> sanity reason, in a minimal effort, the vm_file file pointer is unset once >> the file pointer is put. >> >> [1] https://lore.kernel.org/linux-mm/20100104182429.833180340@chello.nl/ >> >> Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com> > > Using kref would have been better from my POV even with RCU freeing > but anyway: > > Reviewed-by: Jérôme Glisse <jglisse@redhat.com> Thanks Jérôme, I think kref is a good option here, I'll give it a try. >> --- >> include/linux/mm.h | 4 ++++ >> include/linux/mm_types.h | 3 +++ >> mm/internal.h | 27 +++++++++++++++++++++++++++ >> mm/mmap.c | 13 +++++++++---- >> 4 files changed, 43 insertions(+), 4 deletions(-) >> >> diff --git a/include/linux/mm.h b/include/linux/mm.h >> index f14b2c9ddfd4..f761a9c65c74 100644 >> --- a/include/linux/mm.h >> +++ b/include/linux/mm.h >> @@ -529,6 +529,9 @@ static inline void vma_init(struct vm_area_struct *vma, struct mm_struct *mm) >> vma->vm_mm = mm; >> vma->vm_ops = &dummy_vm_ops; >> INIT_LIST_HEAD(&vma->anon_vma_chain); >> +#ifdef CONFIG_SPECULATIVE_PAGE_FAULT >> + atomic_set(&vma->vm_ref_count, 1); >> +#endif >> } >> >> static inline void vma_set_anonymous(struct vm_area_struct *vma) >> @@ -1418,6 +1421,7 @@ static inline void INIT_VMA(struct vm_area_struct *vma) >> INIT_LIST_HEAD(&vma->anon_vma_chain); >> #ifdef CONFIG_SPECULATIVE_PAGE_FAULT >> seqcount_init(&vma->vm_sequence); >> + atomic_set(&vma->vm_ref_count, 1); >> #endif >> } >> >> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h >> index 24b3f8ce9e42..6a6159e11a3f 100644 >> --- a/include/linux/mm_types.h >> +++ b/include/linux/mm_types.h >> @@ -285,6 +285,9 @@ struct vm_area_struct { >> /* linked list of VM areas per task, sorted by address */ >> struct vm_area_struct *vm_next, *vm_prev; >> >> +#ifdef CONFIG_SPECULATIVE_PAGE_FAULT >> + atomic_t vm_ref_count; >> +#endif >> struct rb_node vm_rb; >> >> /* >> diff --git a/mm/internal.h b/mm/internal.h >> index 9eeaf2b95166..302382bed406 100644 >> --- a/mm/internal.h >> +++ b/mm/internal.h >> @@ -40,6 +40,33 @@ void page_writeback_init(void); >> >> vm_fault_t do_swap_page(struct vm_fault *vmf); >> >> + >> +extern void __free_vma(struct vm_area_struct *vma); >> + >> +#ifdef CONFIG_SPECULATIVE_PAGE_FAULT >> +static inline void get_vma(struct vm_area_struct *vma) >> +{ >> + atomic_inc(&vma->vm_ref_count); >> +} >> + >> +static inline void put_vma(struct vm_area_struct *vma) >> +{ >> + if (atomic_dec_and_test(&vma->vm_ref_count)) >> + __free_vma(vma); >> +} >> + >> +#else >> + >> +static inline void get_vma(struct vm_area_struct *vma) >> +{ >> +} >> + >> +static inline void put_vma(struct vm_area_struct *vma) >> +{ >> + __free_vma(vma); >> +} >> +#endif /* CONFIG_SPECULATIVE_PAGE_FAULT */ >> + >> void free_pgtables(struct mmu_gather *tlb, struct vm_area_struct *start_vma, >> unsigned long floor, unsigned long ceiling); >> >> diff --git a/mm/mmap.c b/mm/mmap.c >> index f7f6027a7dff..c106440dcae7 100644 >> --- a/mm/mmap.c >> +++ b/mm/mmap.c >> @@ -188,6 +188,12 @@ static inline void mm_write_sequnlock(struct mm_struct *mm) >> } >> #endif /* CONFIG_SPECULATIVE_PAGE_FAULT */ >> >> +void __free_vma(struct vm_area_struct *vma) >> +{ >> + mpol_put(vma_policy(vma)); >> + vm_area_free(vma); >> +} >> + >> /* >> * Close a vm structure and free it, returning the next. >> */ >> @@ -200,8 +206,8 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma) >> vma->vm_ops->close(vma); >> if (vma->vm_file) >> fput(vma->vm_file); >> - mpol_put(vma_policy(vma)); >> - vm_area_free(vma); >> + vma->vm_file = NULL; >> + put_vma(vma); >> return next; >> } >> >> @@ -990,8 +996,7 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, >> if (next->anon_vma) >> anon_vma_merge(vma, next); >> mm->map_count--; >> - mpol_put(vma_policy(next)); >> - vm_area_free(next); >> + put_vma(next); >> /* >> * In mprotect's case 6 (see comments on vma_merge), >> * we must remove another next too. It would clutter >> -- >> 2.21.0 >> >
next prev parent reply other threads:[~2019-04-24 14:26 UTC|newest] Thread overview: 197+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-04-16 13:44 [PATCH v12 00/31] Speculative page faults Laurent Dufour 2019-04-16 13:44 ` Laurent Dufour 2019-04-16 13:44 ` [PATCH v12 01/31] mm: introduce CONFIG_SPECULATIVE_PAGE_FAULT Laurent Dufour 2019-04-16 13:44 ` Laurent Dufour 2019-04-18 21:47 ` Jerome Glisse 2019-04-18 21:47 ` Jerome Glisse 2019-04-23 15:21 ` Laurent Dufour 2019-04-23 15:21 ` Laurent Dufour 2019-04-16 13:44 ` [PATCH v12 02/31] x86/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT Laurent Dufour 2019-04-16 13:44 ` Laurent Dufour 2019-04-18 21:48 ` Jerome Glisse 2019-04-18 21:48 ` Jerome Glisse 2019-04-16 13:44 ` [PATCH v12 03/31] powerpc/mm: set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT Laurent Dufour 2019-04-16 13:44 ` Laurent Dufour 2019-04-18 21:49 ` Jerome Glisse 2019-04-18 21:49 ` Jerome Glisse 2019-04-16 13:44 ` [PATCH v12 04/31] arm64/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT Laurent Dufour 2019-04-16 13:44 ` Laurent Dufour 2019-04-16 14:27 ` Mark Rutland 2019-04-16 14:27 ` Mark Rutland 2019-04-16 14:31 ` Laurent Dufour 2019-04-16 14:31 ` Laurent Dufour 2019-04-16 14:41 ` Mark Rutland 2019-04-16 14:41 ` Mark Rutland 2019-04-18 21:51 ` Jerome Glisse 2019-04-18 21:51 ` Jerome Glisse 2019-04-23 15:36 ` Laurent Dufour 2019-04-23 15:36 ` Laurent Dufour 2019-04-23 16:19 ` Mark Rutland 2019-04-23 16:19 ` Mark Rutland 2019-04-24 10:34 ` Laurent Dufour 2019-04-24 10:34 ` Laurent Dufour 2019-04-16 13:44 ` [PATCH v12 05/31] mm: prepare for FAULT_FLAG_SPECULATIVE Laurent Dufour 2019-04-16 13:44 ` Laurent Dufour 2019-04-18 22:04 ` Jerome Glisse 2019-04-18 22:04 ` Jerome Glisse 2019-04-23 15:45 ` Laurent Dufour 2019-04-23 15:45 ` Laurent Dufour 2019-04-16 13:44 ` [PATCH v12 06/31] mm: introduce pte_spinlock " Laurent Dufour 2019-04-16 13:44 ` Laurent Dufour 2019-04-18 22:05 ` Jerome Glisse 2019-04-18 22:05 ` Jerome Glisse 2019-04-16 13:44 ` [PATCH v12 07/31] mm: make pte_unmap_same compatible with SPF Laurent Dufour 2019-04-16 13:44 ` Laurent Dufour 2019-04-18 22:10 ` Jerome Glisse 2019-04-18 22:10 ` Jerome Glisse 2019-04-23 15:43 ` Matthew Wilcox 2019-04-23 15:43 ` Matthew Wilcox 2019-04-23 15:47 ` Laurent Dufour 2019-04-23 15:47 ` Laurent Dufour 2019-04-16 13:44 ` [PATCH v12 08/31] mm: introduce INIT_VMA() Laurent Dufour 2019-04-16 13:44 ` Laurent Dufour 2019-04-18 22:22 ` Jerome Glisse 2019-04-18 22:22 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 09/31] mm: VMA sequence count Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-18 22:48 ` Jerome Glisse 2019-04-18 22:48 ` Jerome Glisse 2019-04-19 15:45 ` Laurent Dufour 2019-04-19 15:45 ` Laurent Dufour 2019-04-22 15:51 ` Jerome Glisse 2019-04-22 15:51 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 10/31] mm: protect VMA modifications using " Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 19:43 ` Jerome Glisse 2019-04-22 19:43 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 11/31] mm: protect mremap() against SPF hanlder Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 19:51 ` Jerome Glisse 2019-04-22 19:51 ` Jerome Glisse 2019-04-23 15:51 ` Laurent Dufour 2019-04-23 15:51 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 12/31] mm: protect SPF handler against anon_vma changes Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 19:53 ` Jerome Glisse 2019-04-22 19:53 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 13/31] mm: cache some VMA fields in the vm_fault structure Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 20:06 ` Jerome Glisse 2019-04-22 20:06 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 14/31] mm/migrate: Pass vm_fault pointer to migrate_misplaced_page() Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 20:09 ` Jerome Glisse 2019-04-22 20:09 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 15/31] mm: introduce __lru_cache_add_active_or_unevictable Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 20:11 ` Jerome Glisse 2019-04-22 20:11 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 16/31] mm: introduce __vm_normal_page() Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 20:15 ` Jerome Glisse 2019-04-22 20:15 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 17/31] mm: introduce __page_add_new_anon_rmap() Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 20:18 ` Jerome Glisse 2019-04-22 20:18 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 18/31] mm: protect against PTE changes done by dup_mmap() Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 20:32 ` Jerome Glisse 2019-04-22 20:32 ` Jerome Glisse 2019-04-24 10:33 ` Laurent Dufour 2019-04-24 10:33 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 19/31] mm: protect the RB tree with a sequence lock Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 20:33 ` Jerome Glisse 2019-04-22 20:33 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 20/31] mm: introduce vma reference counter Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 20:36 ` Jerome Glisse 2019-04-22 20:36 ` Jerome Glisse 2019-04-24 14:26 ` Laurent Dufour [this message] 2019-04-24 14:26 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 21/31] mm: Introduce find_vma_rcu() Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 20:57 ` Jerome Glisse 2019-04-22 20:57 ` Jerome Glisse 2019-04-24 14:39 ` Laurent Dufour 2019-04-24 14:39 ` Laurent Dufour 2019-04-23 9:27 ` Peter Zijlstra 2019-04-23 9:27 ` Peter Zijlstra 2019-04-23 18:13 ` Davidlohr Bueso 2019-04-23 18:13 ` Davidlohr Bueso 2019-04-24 7:57 ` Laurent Dufour 2019-04-24 7:57 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 22/31] mm: provide speculative fault infrastructure Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 21:26 ` Jerome Glisse 2019-04-22 21:26 ` Jerome Glisse 2019-04-24 14:56 ` Laurent Dufour 2019-04-24 14:56 ` Laurent Dufour 2019-04-24 15:13 ` Jerome Glisse 2019-04-24 15:13 ` Jerome Glisse 2019-04-16 13:45 ` [PATCH v12 23/31] mm: don't do swap readahead during speculative page fault Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 21:36 ` Jerome Glisse 2019-04-22 21:36 ` Jerome Glisse 2019-04-24 14:57 ` Laurent Dufour 2019-04-24 14:57 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 24/31] mm: adding speculative page fault failure trace events Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 25/31] perf: add a speculative page fault sw event Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 26/31] perf tools: add support for the SPF perf event Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 27/31] mm: add speculative page fault vmstats Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 28/31] x86/mm: add speculative pagefault handling Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 29/31] powerpc/mm: add speculative page fault Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 30/31] arm64/mm: " Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-16 13:45 ` [PATCH v12 31/31] mm: Add a speculative page fault switch in sysctl Laurent Dufour 2019-04-16 13:45 ` Laurent Dufour 2019-04-22 21:29 ` [PATCH v12 00/31] Speculative page faults Michel Lespinasse 2019-04-22 21:29 ` Michel Lespinasse 2019-04-22 21:29 ` Michel Lespinasse 2019-04-23 9:38 ` Peter Zijlstra 2019-04-23 9:38 ` Peter Zijlstra 2019-04-24 7:33 ` Laurent Dufour 2019-04-24 7:33 ` Laurent Dufour 2019-04-27 1:53 ` Michel Lespinasse 2019-04-27 1:53 ` Michel Lespinasse 2019-04-23 10:47 ` Michal Hocko 2019-04-23 10:47 ` Michal Hocko 2019-04-23 12:41 ` Matthew Wilcox 2019-04-23 12:41 ` Matthew Wilcox 2019-04-23 12:48 ` Peter Zijlstra 2019-04-23 12:48 ` Peter Zijlstra 2019-04-23 13:42 ` Michal Hocko 2019-04-23 13:42 ` Michal Hocko 2019-04-24 18:01 ` Laurent Dufour 2019-04-24 18:01 ` Laurent Dufour 2019-04-27 6:00 ` Michel Lespinasse 2019-04-27 6:00 ` Michel Lespinasse 2019-04-23 11:35 ` Anshuman Khandual 2019-04-23 11:35 ` Anshuman Khandual 2019-06-06 6:51 ` Haiyan Song 2019-06-06 6:51 ` Haiyan Song 2019-06-14 8:37 ` Laurent Dufour 2019-06-14 8:37 ` Laurent Dufour 2019-06-14 8:44 ` Laurent Dufour 2019-06-14 8:44 ` Laurent Dufour 2019-06-20 8:19 ` Haiyan Song 2019-06-20 8:19 ` Haiyan Song 2020-07-06 9:25 ` Chinwen Chang 2020-07-06 9:25 ` Chinwen Chang 2020-07-06 12:27 ` Laurent Dufour 2020-07-06 12:27 ` Laurent Dufour 2020-07-07 5:31 ` Chinwen Chang 2020-07-07 5:31 ` Chinwen Chang 2020-12-14 2:03 ` Joel Fernandes 2020-12-14 2:03 ` Joel Fernandes 2020-12-14 9:36 ` Laurent Dufour 2020-12-14 9:36 ` Laurent Dufour 2020-12-14 18:10 ` Joel Fernandes 2020-12-14 18:10 ` Joel Fernandes
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