From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Xu Subject: [PATCH 02/26] mm/alpha: Use general page fault accounting Date: Fri, 26 Jun 2020 18:31:06 -0400 Message-ID: <20200626223130.199227-3-peterx@redhat.com> References: <20200626223130.199227-1-peterx@redhat.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593210697; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QX5XNFqam9mdd/6wKfca40oUCGNepMLO5UWfniIypyY=; b=K2pxyPtKjI2LOKtBjEkzn/0i4u/8Dl0/r4ooqcrCVcv/hRgrRD4rssQEO2rYjaURVuYgWo Ok645+UCgu1GsnbxGWu5uNUs5XoNrh9PpMAFSK2DV780TBnCHNmh6UZLiTbqewEIS5PS1x nc0dAdwop8JqDZ09LIYDFP+uSmmoVtQ= In-Reply-To: <20200626223130.199227-1-peterx@redhat.com> Sender: linux-alpha-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Andrew Morton , Linus Torvalds , Gerald Schaefer , Andrea Arcangeli , Will Deacon , peterx@redhat.com, Michael Ellerman , Richard Henderson , Ivan Kokshaysky , Matt Turner , linux-alpha@vger.kernel.org Use the general page fault accounting by passing regs into handle_mm_fault(). Add the missing PERF_COUNT_SW_PAGE_FAULTS perf events too. Note, the other two perf events (PERF_COUNT_SW_PAGE_FAULTS_[MAJ|MIN]) were done in handle_mm_fault(). CC: Richard Henderson CC: Ivan Kokshaysky CC: Matt Turner CC: linux-alpha@vger.kernel.org Signed-off-by: Peter Xu --- arch/alpha/mm/fault.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c index 82e72f24486e..2e325af081bc 100644 --- a/arch/alpha/mm/fault.c +++ b/arch/alpha/mm/fault.c @@ -25,6 +25,7 @@ #include #include #include +#include extern void die_if_kernel(char *,struct pt_regs *,long, unsigned long *); @@ -116,6 +117,7 @@ do_page_fault(unsigned long address, unsigned long mmcsr, #endif if (user_mode(regs)) flags |= FAULT_FLAG_USER; + perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); retry: down_read(&mm->mmap_sem); vma = find_vma(mm, address); @@ -148,7 +150,7 @@ do_page_fault(unsigned long address, unsigned long mmcsr, /* If for any reason at all we couldn't handle the fault, 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); if (fault_signal_pending(fault, regs)) return; @@ -164,10 +166,6 @@ do_page_fault(unsigned long address, unsigned long mmcsr, } if (flags & FAULT_FLAG_ALLOW_RETRY) { - if (fault & VM_FAULT_MAJOR) - current->maj_flt++; - else - current->min_flt++; if (fault & VM_FAULT_RETRY) { flags |= FAULT_FLAG_TRIED; -- 2.26.2