92d33063c0
Wire up __vdso_getcpu() for x86-32. The 64bit version is reused with trivial modifications. Contrary to vclock_gettime.c there is no requirement to fake any defines in the case of 32bit VDSO on a 64bit kernel because the GDT entry from which the CPU and node information is read is always the native one. Adopt vdso_getcpu.c by: - removing the unneeded time* header files which lead to compile errors for 32bit. - adding segment.h which provides vdso_read_cpunode() and the defines required by it. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20221125094216.3663444-3-bigeasy@linutronix.de
22 lines
474 B
C
22 lines
474 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2006 Andi Kleen, SUSE Labs.
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*
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* Fast user context implementation of getcpu()
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*/
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#include <linux/kernel.h>
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#include <linux/getcpu.h>
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#include <asm/segment.h>
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notrace long
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__vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
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{
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vdso_read_cpunode(cpu, node);
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return 0;
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}
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long getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache)
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__attribute__((weak, alias("__vdso_getcpu")));
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