Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765603Ab3DDXw0 (ORCPT ); Thu, 4 Apr 2013 19:52:26 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:43395 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1765055Ab3DDXr4 (ORCPT ); Thu, 4 Apr 2013 19:47:56 -0400 From: Yinghai Lu To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Andrew Morton , Tejun Heo , Thomas Renninger , Tang Chen Cc: linux-kernel@vger.kernel.org, Yinghai Lu , David Rientjes Subject: [PATCH v3 16/22] x86, mm, numa: Move emulation handling down. Date: Thu, 4 Apr 2013 16:46:20 -0700 Message-Id: <1365119186-23487-17-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1365119186-23487-1-git-send-email-yinghai@kernel.org> References: <1365119186-23487-1-git-send-email-yinghai@kernel.org> X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2846 Lines: 85 It needs to allocate buffer for new numa_meminfo and distance matrix, so move it down. Also we change the behavoir: before this patch, if user input wrong data in command line, it will fall back to next numa probing or disabling numa. after this patch, if user input wrong data in command line, it will stay with numa info from probing before, like acpi srat or amd_numa. We need to call numa_check_memblks to reject wrong user inputs early, so keep the original numa_meminfo not changed. Signed-off-by: Yinghai Lu Cc: David Rientjes --- arch/x86/mm/numa.c | 6 +++--- arch/x86/mm/numa_emulation.c | 2 +- arch/x86/mm/numa_internal.h | 2 ++ 3 files changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 1d5fa08..90fd123 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -537,7 +537,7 @@ static unsigned long __init node_map_pfn_alignment(struct numa_meminfo *mi) } #endif -static int __init numa_check_memblks(struct numa_meminfo *mi) +int __init numa_check_memblks(struct numa_meminfo *mi) { nodemask_t nodes_parsed; unsigned long pfn_align; @@ -607,8 +607,6 @@ static int __init numa_init(int (*init_func)(void)) if (ret < 0) return ret; - numa_emulation(&numa_meminfo, numa_distance_cnt); - ret = numa_check_memblks(&numa_meminfo); if (ret < 0) return ret; @@ -672,6 +670,8 @@ void __init x86_numa_init(void) early_x86_numa_init(); + numa_emulation(&numa_meminfo, numa_distance_cnt); + node_possible_map = numa_nodes_parsed; numa_nodemask_from_meminfo(&node_possible_map, mi); diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c index dbbbb47..5a0433d 100644 --- a/arch/x86/mm/numa_emulation.c +++ b/arch/x86/mm/numa_emulation.c @@ -348,7 +348,7 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt) if (ret < 0) goto no_emu; - if (numa_cleanup_meminfo(&ei) < 0) { + if (numa_cleanup_meminfo(&ei) < 0 || numa_check_memblks(&ei) < 0) { pr_warning("NUMA: Warning: constructed meminfo invalid, disabling emulation\n"); goto no_emu; } diff --git a/arch/x86/mm/numa_internal.h b/arch/x86/mm/numa_internal.h index ad86ec9..bb2fbcc 100644 --- a/arch/x86/mm/numa_internal.h +++ b/arch/x86/mm/numa_internal.h @@ -21,6 +21,8 @@ void __init numa_reset_distance(void); void __init x86_numa_init(void); +int __init numa_check_memblks(struct numa_meminfo *mi); + #ifdef CONFIG_NUMA_EMU void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt); -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/