From: Laurent Dufour <ldufour@linux.vnet.ibm.com>
To: paulmck@linux.vnet.ibm.com, peterz@infradead.org,
akpm@linux-foundation.org, kirill@shutemov.name,
ak@linux.intel.com, mhocko@kernel.org, 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>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
haren@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com,
npiggin@gmail.com, bsingharora@gmail.com,
Tim Chen <tim.c.chen@linux.intel.com>,
linuxppc-dev@lists.ozlabs.org, x86@kernel.org
Subject: [PATCH 15/16] powerpc/mm: Add support for SPF events
Date: Tue, 8 Aug 2017 16:35:48 +0200 [thread overview]
Message-ID: <1502202949-8138-16-git-send-email-ldufour@linux.vnet.ibm.com> (raw)
In-Reply-To: <1502202949-8138-1-git-send-email-ldufour@linux.vnet.ibm.com>
Add support for the new speculative page faults software events.
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
---
arch/powerpc/mm/fault.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index c6cd40901dd0..112c4bc9da70 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -306,8 +306,13 @@ int do_page_fault(struct pt_regs *regs, unsigned long address,
flags |= FAULT_FLAG_WRITE;
fault = handle_speculative_fault(mm, address, flags);
- if (!(fault & VM_FAULT_RETRY || fault & VM_FAULT_ERROR))
+ if (!(fault & VM_FAULT_RETRY || fault & VM_FAULT_ERROR)) {
+ perf_sw_event(PERF_COUNT_SW_SPF_DONE, 1,
+ regs, address);
goto done;
+ }
+
+ perf_sw_event(PERF_COUNT_SW_SPF_FAILED, 1, regs, address);
/*
* Resetting flags since the following code assumes
--
2.7.4
next prev parent reply other threads:[~2017-08-08 14:36 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-08 14:35 [PATCH 00/16] Speculative page faults Laurent Dufour
2017-08-08 14:35 ` [PATCH 01/16] mm: Dont assume page-table invariance during faults Laurent Dufour
2017-08-08 14:35 ` [PATCH 02/16] mm: Prepare for FAULT_FLAG_SPECULATIVE Laurent Dufour
2017-08-09 10:08 ` Kirill A. Shutemov
2017-08-09 10:54 ` Laurent Dufour
2017-08-08 14:35 ` [PATCH 03/16] mm: Introduce pte_spinlock " Laurent Dufour
2017-08-08 14:35 ` [PATCH 04/16] mm: VMA sequence count Laurent Dufour
2017-08-08 14:35 ` [PATCH 05/16] mm: Protect VMA modifications using " Laurent Dufour
2017-08-09 10:12 ` Kirill A. Shutemov
2017-08-09 10:43 ` Laurent Dufour
2017-08-10 0:58 ` Kirill A. Shutemov
2017-08-10 8:27 ` Laurent Dufour
2017-08-10 13:43 ` Kirill A. Shutemov
2017-08-10 18:16 ` Laurent Dufour
2017-08-08 14:35 ` [PATCH 06/16] mm: RCU free VMAs Laurent Dufour
2017-08-08 14:35 ` [PATCH 07/16] mm: Provide speculative fault infrastructure Laurent Dufour
2017-08-08 14:35 ` [PATCH 08/16] mm: Try spin lock in speculative path Laurent Dufour
2017-08-08 14:35 ` [PATCH 09/16] x86/mm: Add speculative pagefault handling Laurent Dufour
2017-08-08 14:35 ` [PATCH 10/16] powerpc/mm: Add speculative page fault Laurent Dufour
2017-08-08 14:35 ` [PATCH 11/16] mm: Introduce __page_add_new_anon_rmap() Laurent Dufour
2017-08-08 14:35 ` [PATCH 12/16] mm: Protect SPF handler against anon_vma changes Laurent Dufour
2017-08-08 14:35 ` [PATCH 13/16] perf: Add a speculative page fault sw events Laurent Dufour
2017-08-09 13:18 ` Michael Ellerman
2017-08-09 13:25 ` Laurent Dufour
2017-08-08 14:35 ` [PATCH 14/16] x86/mm: Add support for SPF events Laurent Dufour
2017-08-08 14:35 ` Laurent Dufour [this message]
2017-08-08 14:35 ` [PATCH 16/16] perf tools: " Laurent Dufour
2017-08-09 1:43 ` Anshuman Khandual
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