Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754094Ab1EVKoM (ORCPT ); Sun, 22 May 2011 06:44:12 -0400 Received: from hera.kernel.org ([140.211.167.34]:52673 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753457Ab1EVKoI (ORCPT ); Sun, 22 May 2011 06:44:08 -0400 Date: Sun, 22 May 2011 10:43:52 GMT From: tip-bot for Suresh Siddha Message-ID: Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, gorcunov@openvz.org, suresh.b.siddha@intel.com, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, gorcunov@openvz.org, suresh.b.siddha@intel.com, tglx@linutronix.de, mingo@elte.hu In-Reply-To: <20110521005526.252703851@sbsiddha-MOBL3.sc.intel.com> References: <20110521005526.252703851@sbsiddha-MOBL3.sc.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/apic] x86, apic: Clean up bigsmp apic selection code Git-Commit-ID: 69c252ffce77f4e38347d536ee4eab4aa162dc67 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Sun, 22 May 2011 10:43:52 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4229 Lines: 145 Commit-ID: 69c252ffce77f4e38347d536ee4eab4aa162dc67 Gitweb: http://git.kernel.org/tip/69c252ffce77f4e38347d536ee4eab4aa162dc67 Author: Suresh Siddha AuthorDate: Fri, 20 May 2011 17:51:19 -0700 Committer: Ingo Molnar CommitDate: Sun, 22 May 2011 11:48:03 +0200 x86, apic: Clean up bigsmp apic selection code Make generic_bigsmp_probe() return struct apic *. This will avoid exporting apic_bigsmp, which will be consistent with others. Signed-off-by: Suresh Siddha Tested-by: Cyrill Gorcunov Cc: steiner@sgi.com Cc: gorcunov@openvz.org Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110521005526.252703851@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar --- arch/x86/include/asm/apic.h | 2 +- arch/x86/kernel/apic/bigsmp_32.c | 8 ++++++ arch/x86/kernel/apic/probe_32.c | 52 ++++++++++++++++--------------------- 3 files changed, 32 insertions(+), 30 deletions(-) diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 80b243c..f37703d 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -500,7 +500,7 @@ static inline void default_wait_for_init_deassert(atomic_t *deassert) return; } -extern void generic_bigsmp_probe(void); +extern struct apic *generic_bigsmp_probe(void); #ifdef CONFIG_X86_LOCAL_APIC diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c index cfb13c3..479a06c 100644 --- a/arch/x86/kernel/apic/bigsmp_32.c +++ b/arch/x86/kernel/apic/bigsmp_32.c @@ -255,4 +255,12 @@ struct apic apic_bigsmp = { .x86_32_early_logical_apicid = bigsmp_early_logical_apicid, }; +struct apic * __init generic_bigsmp_probe(void) +{ + if (probe_bigsmp()) + return &apic_bigsmp; + + return NULL; +} + apic_driver(apic_bigsmp); diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c index 8796e1d..c81756d 100644 --- a/arch/x86/kernel/apic/probe_32.c +++ b/arch/x86/kernel/apic/probe_32.c @@ -52,31 +52,6 @@ static int __init print_ipi_mode(void) } late_initcall(print_ipi_mode); -void __init default_setup_apic_routing(void) -{ - int version = apic_version[boot_cpu_physical_apicid]; - - if (num_possible_cpus() > 8) { - switch (boot_cpu_data.x86_vendor) { - case X86_VENDOR_INTEL: - if (!APIC_XAPIC(version)) { - def_to_bigsmp = 0; - break; - } - /* If P4 and above fall through */ - case X86_VENDOR_AMD: - def_to_bigsmp = 1; - } - } - -#ifdef CONFIG_X86_BIGSMP - generic_bigsmp_probe(); -#endif - - if (apic->setup_apic_routing) - apic->setup_apic_routing(); -} - static int default_x86_32_early_logical_apicid(int cpu) { return 1 << cpu; @@ -224,24 +199,43 @@ static int __init parse_apic(char *arg) } early_param("apic", parse_apic); -void __init generic_bigsmp_probe(void) +void __init default_setup_apic_routing(void) { + int version = apic_version[boot_cpu_physical_apicid]; + + if (num_possible_cpus() > 8) { + switch (boot_cpu_data.x86_vendor) { + case X86_VENDOR_INTEL: + if (!APIC_XAPIC(version)) { + def_to_bigsmp = 0; + break; + } + /* If P4 and above fall through */ + case X86_VENDOR_AMD: + def_to_bigsmp = 1; + } + } + #ifdef CONFIG_X86_BIGSMP /* - * This routine is used to switch to bigsmp mode when + * This is used to switch to bigsmp mode when * - There is no apic= option specified by the user * - generic_apic_probe() has chosen apic_default as the sub_arch * - we find more than 8 CPUs in acpi LAPIC listing with xAPIC support */ if (!cmdline_apic && apic == &apic_default) { - if (apic_bigsmp.probe()) { - apic = &apic_bigsmp; + struct apic *bigsmp = generic_bigsmp_probe(); + if (bigsmp) { + apic = bigsmp; printk(KERN_INFO "Overriding APIC driver with %s\n", apic->name); } } #endif + + if (apic->setup_apic_routing) + apic->setup_apic_routing(); } void __init generic_apic_probe(void) -- 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/