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13cad9851e
The scheduler IPI does not need the full interrupt entry handling logic when the entry is from kernel mode. Use IDTENTRY_SYSVEC_SIMPLE and spare all the overhead. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Andy Lutomirski <luto@kernel.org> Link: https://lore.kernel.org/r/20200521202119.835425642@linutronix.de
27 lines
541 B
C
27 lines
541 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Code for supporting irq vector tracepoints.
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*
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* Copyright (C) 2013 Seiji Aguchi <seiji.aguchi@hds.com>
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*
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*/
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#include <linux/jump_label.h>
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#include <linux/atomic.h>
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#include <asm/hw_irq.h>
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#include <asm/desc.h>
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#include <asm/trace/exceptions.h>
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#include <asm/trace/irq_vectors.h>
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DEFINE_STATIC_KEY_FALSE(trace_pagefault_key);
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int trace_pagefault_reg(void)
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{
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static_branch_inc(&trace_pagefault_key);
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return 0;
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}
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void trace_pagefault_unreg(void)
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{
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static_branch_dec(&trace_pagefault_key);
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}
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