Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751571Ab1BLRLw (ORCPT ); Sat, 12 Feb 2011 12:11:52 -0500 Received: from mail-bw0-f46.google.com ([209.85.214.46]:44248 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751332Ab1BLRLS (ORCPT ); Sat, 12 Feb 2011 12:11:18 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; b=MFhhNSgCWnC6rh5ADLoHRoS94dbCotQ9pHD8A5Wrh5ZOzk1veoQC8J51JlrPk4poC7 FTQep/m2VYNYF/nlzPhSE/Bibvp9UqlZMxfX7qyX8Vd0mYiNzAFo2yik9V9n3k2wDWue KWuGWrBuxUsspbhMQ/CFc5bFlRFnTKS1oAzbY= From: Tejun Heo To: linux-kernel@vger.kernel.org, x86@kernel.org, yinghai@kernel.org, brgerst@gmail.com, gorcunov@gmail.com, shaohui.zheng@intel.com, rientjes@google.com, mingo@elte.hu, hpa@linux.intel.com Cc: Tejun Heo Subject: [PATCH 04/26] x86-64, NUMA: Unify {acpi|amd}_{numa_init|scan_nodes}() arguments and return values Date: Sat, 12 Feb 2011 18:10:41 +0100 Message-Id: <1297530663-26234-5-git-send-email-tj@kernel.org> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1297530663-26234-1-git-send-email-tj@kernel.org> References: <1297530663-26234-1-git-send-email-tj@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6872 Lines: 217 The functions used during NUMA initialization - *_numa_init() and *_scan_nodes() - have different arguments and return values. Unify them such that they all take no argument and return 0 on success and -errno on failure. This is in preparation for further NUMA init cleanups. Signed-off-by: Tejun Heo Cc: Yinghai Lu Cc: Brian Gerst Cc: Cyrill Gorcunov Cc: Shaohui Zheng Cc: David Rientjes Cc: Ingo Molnar Cc: H. Peter Anvin --- arch/x86/include/asm/acpi.h | 2 +- arch/x86/include/asm/amd_nb.h | 2 +- arch/x86/kernel/setup.c | 4 ++-- arch/x86/mm/amdtopology_64.c | 18 +++++++++--------- arch/x86/mm/numa_64.c | 2 +- arch/x86/mm/srat_64.c | 4 ++-- drivers/acpi/numa.c | 9 ++++++--- 7 files changed, 22 insertions(+), 19 deletions(-) diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index 211ca3f..4e5dff9 100644 --- a/arch/x86/include/asm/acpi.h +++ b/arch/x86/include/asm/acpi.h @@ -187,7 +187,7 @@ struct bootnode; extern int acpi_numa; extern void acpi_get_nodes(struct bootnode *physnodes, unsigned long start, unsigned long end); -extern int acpi_scan_nodes(unsigned long start, unsigned long end); +extern int acpi_scan_nodes(void); #define NR_NODE_MEMBLKS (MAX_NUMNODES*2) #ifdef CONFIG_NUMA_EMU diff --git a/arch/x86/include/asm/amd_nb.h b/arch/x86/include/asm/amd_nb.h index 64dc82e..72abf65 100644 --- a/arch/x86/include/asm/amd_nb.h +++ b/arch/x86/include/asm/amd_nb.h @@ -16,7 +16,7 @@ struct bootnode; extern int early_is_amd_nb(u32 value); extern int amd_cache_northbridges(void); extern void amd_flush_garts(void); -extern int amd_numa_init(unsigned long start_pfn, unsigned long end_pfn); +extern int amd_numa_init(void); extern int amd_scan_nodes(void); #ifdef CONFIG_NUMA_EMU diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index c50ba3d..1870a59 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -988,12 +988,12 @@ void __init setup_arch(char **cmdline_p) /* * Parse SRAT to discover nodes. */ - acpi = acpi_numa_init(); + acpi = !acpi_numa_init(); #endif #ifdef CONFIG_AMD_NUMA if (!acpi) - amd = !amd_numa_init(0, max_pfn); + amd = !amd_numa_init(); #endif initmem_init(acpi, amd); diff --git a/arch/x86/mm/amdtopology_64.c b/arch/x86/mm/amdtopology_64.c index c7fae38..ee70257 100644 --- a/arch/x86/mm/amdtopology_64.c +++ b/arch/x86/mm/amdtopology_64.c @@ -51,7 +51,7 @@ static __init int find_northbridge(void) return num; } - return -1; + return -ENOENT; } static __init void early_get_boot_cpu_id(void) @@ -69,17 +69,17 @@ static __init void early_get_boot_cpu_id(void) #endif } -int __init amd_numa_init(unsigned long start_pfn, unsigned long end_pfn) +int __init amd_numa_init(void) { - unsigned long start = PFN_PHYS(start_pfn); - unsigned long end = PFN_PHYS(end_pfn); + unsigned long start = PFN_PHYS(0); + unsigned long end = PFN_PHYS(max_pfn); unsigned numnodes; unsigned long prevbase; int i, nb, found = 0; u32 nodeid, reg; if (!early_pci_allowed()) - return -1; + return -EINVAL; nb = find_northbridge(); if (nb < 0) @@ -90,7 +90,7 @@ int __init amd_numa_init(unsigned long start_pfn, unsigned long end_pfn) reg = read_pci_config(0, nb, 0, 0x60); numnodes = ((reg >> 4) & 0xF) + 1; if (numnodes <= 1) - return -1; + return -ENOENT; pr_info("Number of physical nodes %d\n", numnodes); @@ -121,7 +121,7 @@ int __init amd_numa_init(unsigned long start_pfn, unsigned long end_pfn) if ((base >> 8) & 3 || (limit >> 8) & 3) { pr_err("Node %d using interleaving mode %lx/%lx\n", nodeid, (base >> 8) & 3, (limit >> 8) & 3); - return -1; + return -EINVAL; } if (node_isset(nodeid, nodes_parsed)) { pr_info("Node %d already present, skipping\n", @@ -160,7 +160,7 @@ int __init amd_numa_init(unsigned long start_pfn, unsigned long end_pfn) if (prevbase > base) { pr_err("Node map not sorted %lx,%lx\n", prevbase, base); - return -1; + return -EINVAL; } pr_info("Node %d MemBase %016lx Limit %016lx\n", @@ -177,7 +177,7 @@ int __init amd_numa_init(unsigned long start_pfn, unsigned long end_pfn) } if (!found) - return -1; + return -ENOENT; return 0; } diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index f534feb..85561d1 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -595,7 +595,7 @@ void __init initmem_init(int acpi, int amd) #endif #ifdef CONFIG_ACPI_NUMA - if (!numa_off && acpi && !acpi_scan_nodes(0, max_pfn << PAGE_SHIFT)) + if (!numa_off && acpi && !acpi_scan_nodes()) return; nodes_clear(node_possible_map); nodes_clear(node_online_map); diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c index e3e0dd3..19652dd 100644 --- a/arch/x86/mm/srat_64.c +++ b/arch/x86/mm/srat_64.c @@ -359,7 +359,7 @@ void __init acpi_get_nodes(struct bootnode *physnodes, unsigned long start, #endif /* CONFIG_NUMA_EMU */ /* Use the information discovered above to actually set up the nodes. */ -int __init acpi_scan_nodes(unsigned long start, unsigned long end) +int __init acpi_scan_nodes(void) { int i; @@ -368,7 +368,7 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end) /* First clean up the node list */ for (i = 0; i < MAX_NUMNODES; i++) - cutoff_node(i, start, end); + cutoff_node(i, 0, max_pfn << PAGE_SHIFT); /* * Join together blocks on the same node, holes between diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index 5eb25eb..3b5c318 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -274,7 +274,7 @@ acpi_table_parse_srat(enum acpi_srat_type id, int __init acpi_numa_init(void) { - int ret = 0; + int cnt = 0; /* * Should not limit number with cpu num that is from NR_CPUS or nr_cpus= @@ -288,7 +288,7 @@ int __init acpi_numa_init(void) acpi_parse_x2apic_affinity, 0); acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY, acpi_parse_processor_affinity, 0); - ret = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, + cnt = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, acpi_parse_memory_affinity, NR_NODE_MEMBLKS); } @@ -297,7 +297,10 @@ int __init acpi_numa_init(void) acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit); acpi_numa_arch_fixup(); - return ret; + + if (cnt <= 0) + return cnt ?: -ENOENT; + return 0; } int acpi_get_pxm(acpi_handle h) -- 1.7.1 -- 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/