Messages in this thread Patch in this message | | | Date | Thu, 09 Apr 2015 13:26:29 -0500 | From | Mike Travis <> | Subject | [PATCH 1/3] X86, UV: Update UV APIC OEM check |
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Optimize the first "SGI" OEM check to return faster if the system is not an SGI or UV system.
Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Hedi Berriche <hedi@sgi.com> Acked-by: Dimitri Sivanich <sivanich@sgi.com> --- arch/x86/kernel/apic/x2apic_uv_x.c | 3 +++ 1 file changed, 3 insertions(+)
--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c +++ linux/arch/x86/kernel/apic/x2apic_uv_x.c @@ -146,6 +146,9 @@ static int __init uv_acpi_madt_oem_check { int pnodeid, is_uv1, is_uv2, is_uv3; + if (strncmp(oem_id, "SGI", 3) != 0) + return 0; + is_uv1 = !strcmp(oem_id, "SGI"); is_uv2 = !strcmp(oem_id, "SGI2"); is_uv3 = !strncmp(oem_id, "SGI3", 4); /* there are varieties of UV3 */ --
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