Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757069Ab2BXPbi (ORCPT ); Fri, 24 Feb 2012 10:31:38 -0500 Received: from am1ehsobe004.messaging.microsoft.com ([213.199.154.207]:25044 "EHLO AM1EHSOBE003.bigfish.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751266Ab2BXPbh (ORCPT ); Fri, 24 Feb 2012 10:31:37 -0500 X-SpamScore: -1 X-BigFish: VPS-1(zz4015Izz1202hzz8275bhz2dh668h839h944h) X-Forefront-Antispam-Report: CIP:163.181.249.109;KIP:(null);UIP:(null);IPV:NLI;H:ausb3twp02.amd.com;RD:none;EFVD:NLI X-WSS-ID: 0LZWLSE-02-HYV-02 X-M-MSG: Date: Fri, 24 Feb 2012 16:31:27 +0100 From: Andreas Herrmann To: Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" CC: Borislav Petkov , , Steffen Persvold , Borislav Petkov , Daniel J Blueman Subject: [PATCH resend] x86: Remove wrong error message in x86_default_fixup_cpu_id Message-ID: <20120224153127.GD28921@alberich.amd.com> References: <20120220171705.GA17069@alberich.amd.com> <20120221102725.GC14274@aftab> <4F437A71.6000402@numascale-asia.com> <20120222134707.GA9769@alberich.amd.com> <4F46138A.3030901@numascale-asia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <4F46138A.3030901@numascale-asia.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-OriginatorOrg: amd.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4460 Lines: 128 It's only called from amd.c:srat_detect_node(). The introduced condition for calling the fixup code is true for all AMD multi-node processors, e.g. Magny-Cours and Interlagos. There we have 2 NUMA nodes on one socket. Thus there are cores having different numa-node-id but with equal phys_proc_id. There is no point to print error messages in such a situation. The confusing/misleading error message was introduced with commit 64be4c1c2428e148de6081af235e2418e6a66dda (x86: Add x86_init platform override to fix up NUMA core numbering). Change the default fixup function (remove the error message), move the Numascale-specific condition for calling the fixup into the fixup-function itself and slightly adapt the comment. Signed-off-by: Andreas Herrmann Reviewed-by: Daniel J Blueman --- arch/x86/include/asm/x86_init.h | 2 +- arch/x86/kernel/apic/apic_numachip.c | 7 +++++-- arch/x86/kernel/cpu/amd.c | 8 ++++---- arch/x86/kernel/cpu/common.c | 9 --------- arch/x86/kernel/x86_init.c | 1 + 5 files changed, 11 insertions(+), 16 deletions(-) Please apply. Thanks, Andreas diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index 517d476..1bcacef 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -189,6 +189,6 @@ extern struct x86_msi_ops x86_msi; extern void x86_init_noop(void); extern void x86_init_uint_noop(unsigned int unused); -extern void x86_default_fixup_cpu_id(struct cpuinfo_x86 *c, int node); +extern void x86_default_fixup_cpu_id(struct cpuinfo_x86 *c, int n); #endif diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index 09d3d8c..ade0182 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -201,8 +201,11 @@ static void __init map_csrs(void) static void fixup_cpu_id(struct cpuinfo_x86 *c, int node) { - c->phys_proc_id = node; - per_cpu(cpu_llc_id, smp_processor_id()) = node; + + if (c->phys_proc_id != node) { + c->phys_proc_id = node; + per_cpu(cpu_llc_id, smp_processor_id()) = node; + } } static int __init numachip_system_init(void) diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index f4773f4..52b7287 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -352,11 +352,11 @@ static void __cpuinit srat_detect_node(struct cpuinfo_x86 *c) node = per_cpu(cpu_llc_id, cpu); /* - * If core numbers are inconsistent, it's likely a multi-fabric platform, - * so invoke platform-specific handler + * On multi-fabric platform (e.g. Numascale NumaChip) a + * platform-specific handler needs to be called to fixup some + * IDs of the CPU. */ - if (c->phys_proc_id != node) - x86_cpuinit.fixup_cpu_id(c, node); + x86_cpuinit.fixup_cpu_id(c, node); if (!node_online(node)) { /* diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index d43cad7..37da7a6 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1158,15 +1158,6 @@ static void dbg_restore_debug_regs(void) #endif /* ! CONFIG_KGDB */ /* - * Prints an error where the NUMA and configured core-number mismatch and the - * platform didn't override this to fix it up - */ -void __cpuinit x86_default_fixup_cpu_id(struct cpuinfo_x86 *c, int node) -{ - pr_err("NUMA core number %d differs from configured core number %d\n", node, c->phys_proc_id); -} - -/* * cpu_init() initializes state that is per-CPU. Some data is already * initialized (naturally) in the bootstrap process, such as the GDT * and IDT. We reload them nevertheless, this function acts as a diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 947a06c..67cf78a 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -90,6 +90,7 @@ struct x86_init_ops x86_init __initdata = { }, }; +void __cpuinit x86_default_fixup_cpu_id(struct cpuinfo_x86 *c, int n) { } struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = { .setup_percpu_clockev = setup_secondary_APIC_clock, .fixup_cpu_id = x86_default_fixup_cpu_id, -- 1.7.8.4 -- 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/