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hv: softirq: refine softirq

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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>
This commit is contained in:
Li, Fei1
2018-07-30 15:58:36 +08:00
committed by lijinxia
parent 073583cc41
commit 457ecd6ef7
8 changed files with 82 additions and 122 deletions
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1
hypervisor/include/arch/x86/timer.h
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@@ -54,7 +54,6 @@ static inline void initialize_timer(struct hv_timer *timer,
int add_timer(struct hv_timer *timer);
void del_timer(struct hv_timer *timer);
void timer_softirq(uint16_t pcpu_id);
void timer_init(void);
void timer_cleanup(void);
void check_tsc(void);

16
hypervisor/include/common/softirq.h
View File

@@ -8,16 +8,14 @@
#define SOFTIRQ_H
#define SOFTIRQ_TIMER 0U
#define SOFTIRQ_DEV_ASSIGN 1U
#define SOFTIRQ_MAX 2U
#define SOFTIRQ_MASK ((1UL<<SOFTIRQ_MAX)-1)
#define SOFTIRQ_PTDEV 1U
#define NR_SOFTIRQS 2U
#define SOFTIRQ_MASK ((1UL << NR_SOFTIRQS) - 1UL)
/* used for atomic value for prevent recursive */
#define SOFTIRQ_ATOMIC 63U
typedef void (*softirq_handler)(uint16_t cpu_id);
void enable_softirq(uint16_t cpu_id);
void disable_softirq(uint16_t cpu_id);
void init_softirq(void);
void raise_softirq(uint16_t softirq_id);
void exec_softirq(void);
void register_softirq(uint16_t nr, softirq_handler handler);
void fire_softirq(uint16_t nr);
void do_softirq(void);
#endif /* SOFTIRQ_H */