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Implement lock IRQ nesting via stack variables/contexts
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This commit is contained in:
Kamil Kowalczyk
2026-01-14 22:11:56 +01:00
parent 55166f9d5f
commit 270ff507d4
22 changed files with 197 additions and 145 deletions
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8
kernel/sync/spin_lock.c
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@@ -3,15 +3,15 @@
#include <sys/irq.h>
#include <sys/spin_lock.h>
void spin_lock (spin_lock_t* sl) {
irq_save ();
void spin_lock (spin_lock_t* sl, spin_lock_ctx_t* ctx) {
irq_save (ctx);
while (atomic_flag_test_and_set_explicit (sl, memory_order_acquire))
spin_lock_relax ();
}
void spin_unlock (spin_lock_t* sl) {
void spin_unlock (spin_lock_t* sl, spin_lock_ctx_t* ctx) {
atomic_flag_clear_explicit (sl, memory_order_release);
irq_restore ();
irq_restore (ctx);
}