From 9032160275ba018003ff390835ff8ed2b5b788b8 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Wed, 19 Jan 2011 08:57:21 +0000 Subject: [PATCH] x86: Unify "numa=" command line option handling In order to be able to suppress the use of SRAT tables that 32-bit Linux can't deal with (in one case known to lead to a non-bootable system, unless disabling ACPI altogether), move the "numa=" option handling to common code. Signed-off-by: Jan Beulich Reviewed-by: Thomas Renninger Cc: Tejun Heo Cc: Thomas Renninger LKML-Reference: <4D36B581020000780002D0FF@vpn.id2.novell.com> Signed-off-by: Ingo Molnar --- arch/x86/include/asm/numa_32.h | 2 ++ arch/x86/include/asm/numa_64.h | 1 + arch/x86/mm/numa.c | 22 ++++++++++++++++++++++ arch/x86/mm/numa_64.c | 24 +++++------------------- arch/x86/mm/srat_32.c | 1 - 5 files changed, 30 insertions(+), 20 deletions(-) diff --git a/arch/x86/include/asm/numa_32.h b/arch/x86/include/asm/numa_32.h index a372290..b0ef2b4 100644 --- a/arch/x86/include/asm/numa_32.h +++ b/arch/x86/include/asm/numa_32.h @@ -1,6 +1,8 @@ #ifndef _ASM_X86_NUMA_32_H #define _ASM_X86_NUMA_32_H +extern int numa_off; + extern int pxm_to_nid(int pxm); extern void numa_remove_cpu(int cpu); diff --git a/arch/x86/include/asm/numa_64.h b/arch/x86/include/asm/numa_64.h index 5ae8728..0493be39 100644 --- a/arch/x86/include/asm/numa_64.h +++ b/arch/x86/include/asm/numa_64.h @@ -40,6 +40,7 @@ extern void __cpuinit numa_remove_cpu(int cpu); #ifdef CONFIG_NUMA_EMU #define FAKE_NODE_MIN_SIZE ((u64)32 << 20) #define FAKE_NODE_MIN_HASH_MASK (~(FAKE_NODE_MIN_SIZE - 1UL)) +void numa_emu_cmdline(char *); #endif /* CONFIG_NUMA_EMU */ #else static inline void init_cpu_to_node(void) { } diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 787c52c..ebf6d78 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -2,6 +2,28 @@ #include #include #include +#include +#include + +int __initdata numa_off; + +static __init int numa_setup(char *opt) +{ + if (!opt) + return -EINVAL; + if (!strncmp(opt, "off", 3)) + numa_off = 1; +#ifdef CONFIG_NUMA_EMU + if (!strncmp(opt, "fake=", 5)) + numa_emu_cmdline(opt + 5); +#endif +#ifdef CONFIG_ACPI_NUMA + if (!strncmp(opt, "noacpi", 6)) + acpi_numa = -1; +#endif + return 0; +} +early_param("numa", numa_setup); /* * Which logical CPUs are on which nodes diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c index 1e72102..95ea155 100644 --- a/arch/x86/mm/numa_64.c +++ b/arch/x86/mm/numa_64.c @@ -30,7 +30,6 @@ s16 apicid_to_node[MAX_LOCAL_APIC] __cpuinitdata = { [0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE }; -int numa_off __initdata; static unsigned long __initdata nodemap_addr; static unsigned long __initdata nodemap_size; @@ -263,6 +262,11 @@ static struct bootnode nodes[MAX_NUMNODES] __initdata; static struct bootnode physnodes[MAX_NUMNODES] __cpuinitdata; static char *cmdline __initdata; +void __init numa_emu_cmdline(char *str) +{ + cmdline = str; +} + static int __init setup_physnodes(unsigned long start, unsigned long end, int acpi, int amd) { @@ -670,24 +674,6 @@ unsigned long __init numa_free_all_bootmem(void) return pages; } -static __init int numa_setup(char *opt) -{ - if (!opt) - return -EINVAL; - if (!strncmp(opt, "off", 3)) - numa_off = 1; -#ifdef CONFIG_NUMA_EMU - if (!strncmp(opt, "fake=", 5)) - cmdline = opt + 5; -#endif -#ifdef CONFIG_ACPI_NUMA - if (!strncmp(opt, "noacpi", 6)) - acpi_numa = -1; -#endif - return 0; -} -early_param("numa", numa_setup); - #ifdef CONFIG_NUMA static __init int find_near_online_node(int node) diff --git a/arch/x86/mm/srat_32.c b/arch/x86/mm/srat_32.c index f164345..ae96e7b8 100644 --- a/arch/x86/mm/srat_32.c +++ b/arch/x86/mm/srat_32.c @@ -59,7 +59,6 @@ static struct node_memory_chunk_s __initdata node_memory_chunk[MAXCHUNKS]; static int __initdata num_memory_chunks; /* total number of memory chunks */ static u8 __initdata apicid_to_pxm[MAX_APICID]; -int numa_off __initdata; int acpi_numa __initdata; static __init void bad_srat(void) -- 2.7.4