github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2026-01-04 23:24:56 +00:00
Code Issues Projects Releases Wiki Activity

hv: ptdev: refine ptdev active flag

Browse Source 
Since spinlock ptdev_lock is used to protect ptdev entry, there's no need to
use atomic operation to protect ptdev active flag in split of it's wrong used
to protect ptdev entry. And refine active flag data type to bool.

Tracked-On: #1842
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
This commit is contained in:
Li, Fei1
2019-07-02 21:37:08 +08:00
committed by ACRN System Integration
parent cb8bbf7bea
commit 647797ff1a
2 changed files with 9 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
hypervisor/common/ptdev.c
View File

@@ -8,7 +8,6 @@
#include <softirq.h>
#include <ptdev.h>
#include <irq.h>
#include <atomic.h>
#include <logmsg.h>
#define PTIRQ_BITMAP_ARRAY_SIZE INT_DIV_ROUNDUP(CONFIG_MAX_PT_IRQ_ENTRIES, 64U)
@@ -16,11 +15,6 @@ struct ptirq_remapping_info ptirq_entries[CONFIG_MAX_PT_IRQ_ENTRIES];
static uint64_t ptirq_entry_bitmaps[PTIRQ_BITMAP_ARRAY_SIZE];
spinlock_t ptdev_lock;
bool is_entry_active(const struct ptirq_remapping_info *entry)
{
return atomic_load32(&entry->active) == ACTIVE_FLAG;
}
static inline uint16_t ptirq_alloc_entry_id(void)
{
uint16_t id = (uint16_t)ffz64_ex(ptirq_entry_bitmaps, CONFIG_MAX_PT_IRQ_ENTRIES);
@@ -100,7 +94,7 @@ struct ptirq_remapping_info *ptirq_alloc_entry(struct acrn_vm *vm, uint32_t intr
initialize_timer(&entry->intr_delay_timer, ptirq_intr_delay_callback, entry, 0UL, 0, 0UL);
atomic_clear32(&entry->active, ACTIVE_FLAG);
entry->active = false;
} else {
pr_err("Alloc ptdev irq entry failed");
}
@@ -167,7 +161,7 @@ int32_t ptirq_activate_entry(struct ptirq_remapping_info *entry, uint32_t phys_i
pr_err("request irq failed, please check!, phys-irq=%d", phys_irq);
} else {
entry->allocated_pirq = (uint32_t)retval;
atomic_set32(&entry->active, ACTIVE_FLAG);
entry->active = true;
}
return retval;
@@ -175,7 +169,7 @@ int32_t ptirq_activate_entry(struct ptirq_remapping_info *entry, uint32_t phys_i
void ptirq_deactivate_entry(struct ptirq_remapping_info *entry)
{
atomic_clear32(&entry->active, ACTIVE_FLAG);
entry->active = false;
free_irq(entry->allocated_pirq);
}