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https://github.com/projectacrn/acrn-hypervisor.git
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457ecd6ef7
1. add register_softirq to register a softirq handler 2. rename exec_softirq to do_softirq; raise_softirq to fire_softirq. 3. in do_softirq call registered softirq handler not call the device softirq handle function directly 4. enable irq after vm exit and disable irq after the first call do_softirq before vm enter. 5. call do_softirq again when irq disabled to handle the risk unhandled softirq. 6. rename SOFTIRQ_DEV_ASSIGN to SOFTIRQ_PTDEV 7. remove SOFTIRQ_ATOMIC Signed-off-by: Li, Fei1 <fei1.li@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
49 lines
897 B
C
49 lines
897 B
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <hypervisor.h>
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#include <softirq.h>
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static softirq_handler softirq_handlers[NR_SOFTIRQS];
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void init_softirq(void)
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{
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}
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/*
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* @pre: nr will not equal or large than NR_SOFTIRQS
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*/
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void register_softirq(uint16_t nr, softirq_handler handler)
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{
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softirq_handlers[nr] = handler;
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}
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/*
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* @pre: nr will not equal or large than NR_SOFTIRQS
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*/
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void fire_softirq(uint16_t nr)
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{
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bitmap_set_lock(nr, &per_cpu(softirq_pending, get_cpu_id()));
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}
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void do_softirq(void)
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{
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uint16_t nr;
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uint16_t cpu_id = get_cpu_id();
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volatile uint64_t *softirq_pending_bitmap =
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&per_cpu(softirq_pending, cpu_id);
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while (true) {
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nr = ffs64(*softirq_pending_bitmap);
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if (nr >= NR_SOFTIRQS)
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break;
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bitmap_clear_lock(nr, softirq_pending_bitmap);
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(*softirq_handlers[nr])(cpu_id);
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}
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}
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