From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752373AbdHGUlX (ORCPT ); Mon, 7 Aug 2017 16:41:23 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:42197 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752214AbdHGUki (ORCPT ); Mon, 7 Aug 2017 16:40:38 -0400 From: Pavel Tatashin To: linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, kasan-dev@googlegroups.com, borntraeger@de.ibm.com, heiko.carstens@de.ibm.com, davem@davemloft.net, willy@infradead.org, mhocko@kernel.org, ard.biesheuvel@linaro.org, will.deacon@arm.com, catalin.marinas@arm.com, sam@ravnborg.org Subject: [v6 15/15] mm: debug for raw alloctor Date: Mon, 7 Aug 2017 16:38:49 -0400 Message-Id: <1502138329-123460-16-git-send-email-pasha.tatashin@oracle.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1502138329-123460-1-git-send-email-pasha.tatashin@oracle.com> References: <1502138329-123460-1-git-send-email-pasha.tatashin@oracle.com> X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When CONFIG_DEBUG_VM is enabled, this patch sets all the memory that is returned by memblock_virt_alloc_try_nid_raw() to ones to ensure that no places excpect zeroed memory. Signed-off-by: Pavel Tatashin Reviewed-by: Steven Sistare Reviewed-by: Daniel Jordan Reviewed-by: Bob Picco --- mm/memblock.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/mm/memblock.c b/mm/memblock.c index 3fbf3bcb52d9..29fcb1dd8a81 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -1363,12 +1363,19 @@ void * __init memblock_virt_alloc_try_nid_raw( phys_addr_t min_addr, phys_addr_t max_addr, int nid) { + void *ptr; + memblock_dbg("%s: %llu bytes align=0x%llx nid=%d from=0x%llx max_addr=0x%llx %pF\n", __func__, (u64)size, (u64)align, nid, (u64)min_addr, (u64)max_addr, (void *)_RET_IP_); - return memblock_virt_alloc_internal(size, align, - min_addr, max_addr, nid); + ptr = memblock_virt_alloc_internal(size, align, + min_addr, max_addr, nid); +#ifdef CONFIG_DEBUG_VM + if (ptr && size > 0) + memset(ptr, 0xff, size); +#endif + return ptr; } /** -- 2.14.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Tatashin Date: Mon, 07 Aug 2017 20:38:49 +0000 Subject: [v6 15/15] mm: debug for raw alloctor Message-Id: <1502138329-123460-16-git-send-email-pasha.tatashin@oracle.com> List-Id: References: <1502138329-123460-1-git-send-email-pasha.tatashin@oracle.com> In-Reply-To: <1502138329-123460-1-git-send-email-pasha.tatashin@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org When CONFIG_DEBUG_VM is enabled, this patch sets all the memory that is returned by memblock_virt_alloc_try_nid_raw() to ones to ensure that no places excpect zeroed memory. Signed-off-by: Pavel Tatashin Reviewed-by: Steven Sistare Reviewed-by: Daniel Jordan Reviewed-by: Bob Picco --- mm/memblock.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/mm/memblock.c b/mm/memblock.c index 3fbf3bcb52d9..29fcb1dd8a81 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -1363,12 +1363,19 @@ void * __init memblock_virt_alloc_try_nid_raw( phys_addr_t min_addr, phys_addr_t max_addr, int nid) { + void *ptr; + memblock_dbg("%s: %llu bytes align=0x%llx nid=%d from=0x%llx max_addr=0x%llx %pF\n", __func__, (u64)size, (u64)align, nid, (u64)min_addr, (u64)max_addr, (void *)_RET_IP_); - return memblock_virt_alloc_internal(size, align, - min_addr, max_addr, nid); + ptr = memblock_virt_alloc_internal(size, align, + min_addr, max_addr, nid); +#ifdef CONFIG_DEBUG_VM + if (ptr && size > 0) + memset(ptr, 0xff, size); +#endif + return ptr; } /** -- 2.14.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yw0-f197.google.com (mail-yw0-f197.google.com [209.85.161.197]) by kanga.kvack.org (Postfix) with ESMTP id 206616B037C for ; Mon, 7 Aug 2017 16:39:51 -0400 (EDT) Received: by mail-yw0-f197.google.com with SMTP id l82so21854069ywc.1 for ; Mon, 07 Aug 2017 13:39:51 -0700 (PDT) Received: from userp1040.oracle.com (userp1040.oracle.com. [156.151.31.81]) by mx.google.com with ESMTPS id f126si2449892ybg.829.2017.08.07.13.39.50 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 07 Aug 2017 13:39:50 -0700 (PDT) From: Pavel Tatashin Subject: [v6 15/15] mm: debug for raw alloctor Date: Mon, 7 Aug 2017 16:38:49 -0400 Message-Id: <1502138329-123460-16-git-send-email-pasha.tatashin@oracle.com> In-Reply-To: <1502138329-123460-1-git-send-email-pasha.tatashin@oracle.com> References: <1502138329-123460-1-git-send-email-pasha.tatashin@oracle.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, kasan-dev@googlegroups.com, borntraeger@de.ibm.com, heiko.carstens@de.ibm.com, davem@davemloft.net, willy@infradead.org, mhocko@kernel.org, ard.biesheuvel@linaro.org, will.deacon@arm.com, catalin.marinas@arm.com, sam@ravnborg.org When CONFIG_DEBUG_VM is enabled, this patch sets all the memory that is returned by memblock_virt_alloc_try_nid_raw() to ones to ensure that no places excpect zeroed memory. Signed-off-by: Pavel Tatashin Reviewed-by: Steven Sistare Reviewed-by: Daniel Jordan Reviewed-by: Bob Picco --- mm/memblock.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/mm/memblock.c b/mm/memblock.c index 3fbf3bcb52d9..29fcb1dd8a81 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -1363,12 +1363,19 @@ void * __init memblock_virt_alloc_try_nid_raw( phys_addr_t min_addr, phys_addr_t max_addr, int nid) { + void *ptr; + memblock_dbg("%s: %llu bytes align=0x%llx nid=%d from=0x%llx max_addr=0x%llx %pF\n", __func__, (u64)size, (u64)align, nid, (u64)min_addr, (u64)max_addr, (void *)_RET_IP_); - return memblock_virt_alloc_internal(size, align, - min_addr, max_addr, nid); + ptr = memblock_virt_alloc_internal(size, align, + min_addr, max_addr, nid); +#ifdef CONFIG_DEBUG_VM + if (ptr && size > 0) + memset(ptr, 0xff, size); +#endif + return ptr; } /** -- 2.14.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 From: pasha.tatashin@oracle.com (Pavel Tatashin) Date: Mon, 7 Aug 2017 16:38:49 -0400 Subject: [v6 15/15] mm: debug for raw alloctor In-Reply-To: <1502138329-123460-1-git-send-email-pasha.tatashin@oracle.com> References: <1502138329-123460-1-git-send-email-pasha.tatashin@oracle.com> Message-ID: <1502138329-123460-16-git-send-email-pasha.tatashin@oracle.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org When CONFIG_DEBUG_VM is enabled, this patch sets all the memory that is returned by memblock_virt_alloc_try_nid_raw() to ones to ensure that no places excpect zeroed memory. Signed-off-by: Pavel Tatashin Reviewed-by: Steven Sistare Reviewed-by: Daniel Jordan Reviewed-by: Bob Picco --- mm/memblock.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/mm/memblock.c b/mm/memblock.c index 3fbf3bcb52d9..29fcb1dd8a81 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -1363,12 +1363,19 @@ void * __init memblock_virt_alloc_try_nid_raw( phys_addr_t min_addr, phys_addr_t max_addr, int nid) { + void *ptr; + memblock_dbg("%s: %llu bytes align=0x%llx nid=%d from=0x%llx max_addr=0x%llx %pF\n", __func__, (u64)size, (u64)align, nid, (u64)min_addr, (u64)max_addr, (void *)_RET_IP_); - return memblock_virt_alloc_internal(size, align, - min_addr, max_addr, nid); + ptr = memblock_virt_alloc_internal(size, align, + min_addr, max_addr, nid); +#ifdef CONFIG_DEBUG_VM + if (ptr && size > 0) + memset(ptr, 0xff, size); +#endif + return ptr; } /** -- 2.14.0