Message ID | 20200619161348.9811-1-peterx@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Fri, 19 Jun 2020 09:13:50 -0700 (PDT) Received: from xz-x1.redhat.com ([2607:9880:19c0:32::2]) by smtp.gmail.com with ESMTPSA id v184sm1283720qki.12.2020.06.19.09.13.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Jun 2020 09:13:49 -0700 (PDT) From: Peter Xu <peterx@redhat.com> To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Peter Xu <peterx@redhat.com>, Gerald Schaefer <gerald.schaefer@de.ibm.com>, Andrew Morton <akpm@linux-foundation.org>, Andrea Arcangeli <aarcange@redhat.com>, Will Deacon <will@kernel.org>, Michael Ellerman <mpe@ellerman.id.au>, Linus Torvalds <torvalds@linux-foundation.org>, "David S . Miller" <davem@davemloft.net>, sparclinux@vger.kernel.org Subject: [PATCH 21/26] mm/sparc64: Use general page fault accounting Date: Fri, 19 Jun 2020 12:13:48 -0400 Message-Id: <20200619161348.9811-1-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200619160538.8641-1-peterx@redhat.com> References: <20200619160538.8641-1-peterx@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=peterx@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII X-Rspamd-Queue-Id: B6CE63000087A654 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
Series |
mm: Page fault accounting cleanups
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expand
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diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c index 6b702a0a8155..fe8854d447ed 100644 --- a/arch/sparc/mm/fault_64.c +++ b/arch/sparc/mm/fault_64.c @@ -423,7 +423,7 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) goto bad_area; } - fault = handle_mm_fault(vma, address, flags, NULL); + fault = handle_mm_fault(vma, address, flags, regs); if (fault_signal_pending(fault, regs)) goto exit_exception; @@ -439,15 +439,6 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs) } if (flags & FAULT_FLAG_ALLOW_RETRY) { - if (fault & VM_FAULT_MAJOR) { - current->maj_flt++; - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, - 1, regs, address); - } else { - current->min_flt++; - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, - 1, regs, address); - } if (fault & VM_FAULT_RETRY) { flags |= FAULT_FLAG_TRIED;
Use the general page fault accounting by passing regs into handle_mm_fault(). It naturally solve the issue of multiple page fault accounting when page fault retry happened. CC: David S. Miller <davem@davemloft.net> CC: sparclinux@vger.kernel.org Signed-off-by: Peter Xu <peterx@redhat.com> --- arch/sparc/mm/fault_64.c | 11 +---------- 1 file changed, 1 insertion(+), 10 deletions(-)