Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758634AbcCVKMP (ORCPT ); Tue, 22 Mar 2016 06:12:15 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:41491 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758621AbcCVKMF (ORCPT ); Tue, 22 Mar 2016 06:12:05 -0400 From: Vaishali Thakkar To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Vaishali Thakkar , Mike Kravetz , Naoya Horiguchi , Hillf Danton , Michal Hocko , Yaowei Bai , Dominik Dingel , "Kirill A. Shutemov" , Paul Gortmaker , Dave Hansen Subject: [PATCH 2/2] arch:mm: Use hugetlb_bad_size Date: Tue, 22 Mar 2016 15:35:59 +0530 Message-Id: <1458641159-13643-1-git-send-email-vaishali.thakkar@oracle.com> X-Mailer: git-send-email 2.1.4 X-Source-IP: aserv0021.oracle.com [141.146.126.233] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3816 Lines: 111 Update the setup_hugepagesz function to call the routine hugetlb_bad_size when unsupported hugepage size is found. Misc: - Silent 80 characters warning Signed-off-by: Vaishali Thakkar Cc: Mike Kravetz Cc: Naoya Horiguchi Cc: Hillf Danton Cc: Michal Hocko Cc: Yaowei Bai Cc: Dominik Dingel Cc: Kirill A. Shutemov Cc: Paul Gortmaker Cc: Dave Hansen --- - Please note that the patch is tested for x86 only. But as this is one line change I just changed them. So, it would be good if the patch can be tested for other architectures before adding this in to mainline. - Not sure if printk related checkpatch.pl warning should be resolved with this patch as code is not consistent in architectures. May be one separate patch for changing all printk's to pr_ kind of debugging functions would be good. --- arch/arm64/mm/hugetlbpage.c | 1 + arch/metag/mm/hugetlbpage.c | 1 + arch/powerpc/mm/hugetlbpage.c | 7 +++++-- arch/tile/mm/hugetlbpage.c | 7 ++++++- arch/x86/mm/hugetlbpage.c | 1 + 5 files changed, 14 insertions(+), 3 deletions(-) diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c index 589fd28..aa8aee7 100644 --- a/arch/arm64/mm/hugetlbpage.c +++ b/arch/arm64/mm/hugetlbpage.c @@ -307,6 +307,7 @@ static __init int setup_hugepagesz(char *opt) } else if (ps == PUD_SIZE) { hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT); } else { + hugetlb_bad_size(); pr_err("hugepagesz: Unsupported page size %lu K\n", ps >> 10); return 0; } diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c index b38700a..db1b7da 100644 --- a/arch/metag/mm/hugetlbpage.c +++ b/arch/metag/mm/hugetlbpage.c @@ -239,6 +239,7 @@ static __init int setup_hugepagesz(char *opt) if (ps == (1 << HPAGE_SHIFT)) { hugetlb_add_hstate(HPAGE_SHIFT - PAGE_SHIFT); } else { + hugetlb_bad_size(); pr_err("hugepagesz: Unsupported page size %lu M\n", ps >> 20); return 0; diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index 6dd272b..a437ff7 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -772,8 +772,11 @@ static int __init hugepage_setup_sz(char *str) size = memparse(str, &str); - if (add_huge_page_size(size) != 0) - printk(KERN_WARNING "Invalid huge page size specified(%llu)\n", size); + if (add_huge_page_size(size) != 0) { + hugetlb_bad_size(); + printk(KERN_WARNING "Invalid huge page size specified(%llu)\n", + size); + } return 1; } diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c index e212c64..77ceaa3 100644 --- a/arch/tile/mm/hugetlbpage.c +++ b/arch/tile/mm/hugetlbpage.c @@ -308,11 +308,16 @@ static bool saw_hugepagesz; static __init int setup_hugepagesz(char *opt) { + int rc; + if (!saw_hugepagesz) { saw_hugepagesz = true; memset(huge_shift, 0, sizeof(huge_shift)); } - return __setup_hugepagesz(memparse(opt, NULL)); + rc = __setup_hugepagesz(memparse(opt, NULL)); + if (rc) + hugetlb_bad_size(); + return rc; } __setup("hugepagesz=", setup_hugepagesz); diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c index 740d7ac..3ec44f8 100644 --- a/arch/x86/mm/hugetlbpage.c +++ b/arch/x86/mm/hugetlbpage.c @@ -165,6 +165,7 @@ static __init int setup_hugepagesz(char *opt) } else if (ps == PUD_SIZE && cpu_has_gbpages) { hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT); } else { + hugetlb_bad_size(); printk(KERN_ERR "hugepagesz: Unsupported page size %lu M\n", ps >> 20); return 0; -- 2.1.4