From: Laurent Dufour <ldufour@linux.vnet.ibm.com>
To: Ganesh Mahendran <opensource.ganesh@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
kirill@shutemov.name, ak@linux.intel.com, dave@stgolabs.net,
jack@suse.cz, Matthew Wilcox <willy@infradead.org>,
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>,
Andrea Arcangeli <aarcange@redhat.com>,
Alexei Starovoitov <alexei.starovoitov@gmail.com>,
kemi.wang@intel.com,
Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
Daniel Jordan <daniel.m.jordan@oracle.com>,
David Rientjes <rientjes@google.com>,
Jerome Glisse <jglisse@redhat.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
haren@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com,
npiggin@gmail.com, Balbir Singh <bsingharora@gmail.com>,
Paul McKenney <paulmck@linux.vnet.ibm.com>,
Tim Chen <tim.c.chen@linux.intel.com>,
linuxppc-dev@lists.ozlabs.org, x86@kernel.org
Subject: Re: [PATCH v10 23/25] mm: add speculative page fault vmstats
Date: Wed, 16 May 2018 08:42:43 +0200 [thread overview]
Message-ID: <5e98d70e-5eb0-32d0-f370-f0946fd17b49@linux.vnet.ibm.com> (raw)
In-Reply-To: <CADAEsF-DbqdOWcbzjvOTbrounCQP5pLmAZBKByfG165bu82_pA@mail.gmail.com>
On 16/05/2018 04:50, Ganesh Mahendran wrote:
> 2018-04-17 22:33 GMT+08:00 Laurent Dufour <ldufour@linux.vnet.ibm.com>:
>> Add speculative_pgfault vmstat counter to count successful speculative page
>> fault handling.
>>
>> Also fixing a minor typo in include/linux/vm_event_item.h.
>>
>> Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
>> ---
>> include/linux/vm_event_item.h | 3 +++
>> mm/memory.c | 1 +
>> mm/vmstat.c | 5 ++++-
>> 3 files changed, 8 insertions(+), 1 deletion(-)
>>
>> diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
>> index 5c7f010676a7..a240acc09684 100644
>> --- a/include/linux/vm_event_item.h
>> +++ b/include/linux/vm_event_item.h
>> @@ -111,6 +111,9 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
>> SWAP_RA,
>> SWAP_RA_HIT,
>> #endif
>> +#ifdef CONFIG_SPECULATIVE_PAGE_FAULT
>> + SPECULATIVE_PGFAULT,
>> +#endif
>> NR_VM_EVENT_ITEMS
>> };
>>
>> diff --git a/mm/memory.c b/mm/memory.c
>> index 425f07e0bf38..1cd5bc000643 100644
>> --- a/mm/memory.c
>> +++ b/mm/memory.c
>> @@ -4508,6 +4508,7 @@ int __handle_speculative_fault(struct mm_struct *mm, unsigned long address,
>> * If there is no need to retry, don't return the vma to the caller.
>> */
>> if (ret != VM_FAULT_RETRY) {
>> + count_vm_event(SPECULATIVE_PGFAULT);
>> put_vma(vmf.vma);
>> *vma = NULL;
>> }
>> diff --git a/mm/vmstat.c b/mm/vmstat.c
>> index 536332e988b8..c6b49bfa8139 100644
>> --- a/mm/vmstat.c
>> +++ b/mm/vmstat.c
>> @@ -1289,7 +1289,10 @@ const char * const vmstat_text[] = {
>> "swap_ra",
>> "swap_ra_hit",
>> #endif
>> -#endif /* CONFIG_VM_EVENTS_COUNTERS */
>> +#ifdef CONFIG_SPECULATIVE_PAGE_FAULT
>> + "speculative_pgfault"
>
> "speculative_pgfault",
> will be better. :)
Sure !
Thanks.
>
>> +#endif
>> +#endif /* CONFIG_VM_EVENT_COUNTERS */
>> };
>> #endif /* CONFIG_PROC_FS || CONFIG_SYSFS || CONFIG_NUMA */
>>
>> --
>> 2.7.4
>>
>
next prev parent reply other threads:[~2018-05-16 6:42 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-17 14:33 [PATCH v10 00/25] Speculative page faults Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 01/25] mm: introduce CONFIG_SPECULATIVE_PAGE_FAULT Laurent Dufour
2018-04-23 5:58 ` Minchan Kim
2018-04-23 15:10 ` Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 02/25] x86/mm: define ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT Laurent Dufour
2018-05-08 11:04 ` Punit Agrawal
2018-05-14 14:47 ` Laurent Dufour
2018-05-14 15:05 ` Punit Agrawal
2018-04-17 14:33 ` [PATCH v10 03/25] powerpc/mm: set ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 04/25] mm: prepare for FAULT_FLAG_SPECULATIVE Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 05/25] mm: introduce pte_spinlock " Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 06/25] mm: make pte_unmap_same compatible with SPF Laurent Dufour
2018-04-23 6:31 ` Minchan Kim
2018-04-30 14:07 ` Laurent Dufour
2018-05-01 13:04 ` Minchan Kim
2018-05-10 16:15 ` vinayak menon
2018-05-14 15:09 ` Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 07/25] mm: introduce INIT_VMA() Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 08/25] mm: VMA sequence count Laurent Dufour
2018-04-23 6:42 ` Minchan Kim
2018-04-30 15:14 ` Laurent Dufour
2018-05-01 13:16 ` Minchan Kim
2018-05-03 14:45 ` Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 09/25] mm: protect VMA modifications using " Laurent Dufour
2018-04-23 7:19 ` Minchan Kim
2018-05-14 15:25 ` Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 10/25] mm: protect mremap() against SPF hanlder Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 11/25] mm: protect SPF handler against anon_vma changes Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 12/25] mm: cache some VMA fields in the vm_fault structure Laurent Dufour
2018-04-23 7:42 ` Minchan Kim
2018-05-03 12:25 ` Laurent Dufour
2018-05-03 15:42 ` Minchan Kim
2018-05-04 9:10 ` Laurent Dufour
2018-05-08 10:56 ` Minchan Kim
2018-04-17 14:33 ` [PATCH v10 13/25] mm/migrate: Pass vm_fault pointer to migrate_misplaced_page() Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 14/25] mm: introduce __lru_cache_add_active_or_unevictable Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 15/25] mm: introduce __vm_normal_page() Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 16/25] mm: introduce __page_add_new_anon_rmap() Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 17/25] mm: protect mm_rb tree with a rwlock Laurent Dufour
2018-04-30 18:47 ` Punit Agrawal
2018-05-02 6:37 ` Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 18/25] mm: provide speculative fault infrastructure Laurent Dufour
2018-05-15 13:09 ` vinayak menon
2018-05-15 14:07 ` Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 19/25] mm: adding speculative page fault failure trace events Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 20/25] perf: add a speculative page fault sw event Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 21/25] perf tools: add support for the SPF perf event Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 22/25] mm: speculative page fault handler return VMA Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 23/25] mm: add speculative page fault vmstats Laurent Dufour
2018-05-16 2:50 ` Ganesh Mahendran
2018-05-16 6:42 ` Laurent Dufour [this message]
2018-04-17 14:33 ` [PATCH v10 24/25] x86/mm: add speculative pagefault handling Laurent Dufour
2018-04-30 18:43 ` Punit Agrawal
2018-05-03 14:59 ` Laurent Dufour
2018-04-17 14:33 ` [PATCH v10 25/25] powerpc/mm: add speculative page fault Laurent Dufour
2018-05-02 14:17 ` [PATCH v10 00/25] Speculative page faults Punit Agrawal
2018-05-02 14:45 ` Laurent Dufour
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