Message ID | 20200619161327.9564-1-peterx@redhat.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Fri, 19 Jun 2020 09:13:30 -0700 (PDT) Received: from xz-x1.redhat.com ([2607:9880:19c0:32::2]) by smtp.gmail.com with ESMTPSA id s52sm7597075qtb.3.2020.06.19.09.13.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Jun 2020 09:13:30 -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>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 16/26] mm/powerpc: Use general page fault accounting Date: Fri, 19 Jun 2020 12:13:27 -0400 Message-Id: <20200619161327.9564-1-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 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; 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Series |
mm: Page fault accounting cleanups
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expand
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diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 992b10c3761c..e325d13efaf5 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -563,7 +563,7 @@ static int __do_page_fault(struct pt_regs *regs, unsigned long address, * make sure we exit gracefully rather than endlessly redo * the fault. */ - fault = handle_mm_fault(vma, address, flags, NULL); + fault = handle_mm_fault(vma, address, flags, regs); #ifdef CONFIG_PPC_MEM_KEYS /* @@ -604,14 +604,9 @@ static int __do_page_fault(struct pt_regs *regs, unsigned long address, /* * Major/minor page fault accounting. */ - if (major) { - current->maj_flt++; - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address); + if (major) cmo_account_page_fault(); - } else { - current->min_flt++; - perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address); - } + return 0; } NOKPROBE_SYMBOL(__do_page_fault);
Use the general page fault accounting by passing regs into handle_mm_fault(). CC: Michael Ellerman <mpe@ellerman.id.au> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Paul Mackerras <paulus@samba.org> CC: linuxppc-dev@lists.ozlabs.org Signed-off-by: Peter Xu <peterx@redhat.com> --- arch/powerpc/mm/fault.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-)