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Dynamically assign cpu upon mutex unlock
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Kamil Kowalczyk
2026-01-25 20:39:51 +01:00
parent 8650010992
commit a68373e4ee
1 changed files with 10 additions and 10 deletions
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6
kernel/proc/mutex.c
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@@ -42,6 +42,7 @@ static void proc_mutex_suspend (struct proc* proc, struct proc_suspension_q* sq,
cpu->proc_current = NULL; cpu->proc_current = NULL;
list_append (sq->proc_list, &proc->suspension_link); list_append (sq->proc_list, &proc->suspension_link);
proc->cpu = NULL;
spin_unlock (&sq->lock, &ctxsq); spin_unlock (&sq->lock, &ctxsq);
spin_unlock (&proc->lock, &ctxpr); spin_unlock (&proc->lock, &ctxpr);
@@ -52,14 +53,14 @@ static void proc_mutex_suspend (struct proc* proc, struct proc_suspension_q* sq,
static void proc_mutex_resume (struct proc* proc) { static void proc_mutex_resume (struct proc* proc) {
spin_lock_ctx_t ctxsq, ctxpr, ctxcpu; spin_lock_ctx_t ctxsq, ctxpr, ctxcpu;
struct cpu* cpu = proc->cpu; struct cpu* cpu = cpu_find_lightest ();
spin_lock (&cpu->lock, &ctxcpu); spin_lock (&cpu->lock, &ctxcpu);
spin_lock (&proc->lock, &ctxpr); spin_lock (&proc->lock, &ctxpr);
proc->cpu = cpu;
struct proc_suspension_q* sq = proc->suspension_q; struct proc_suspension_q* sq = proc->suspension_q;
if (sq) {
spin_lock (&sq->lock, &ctxsq); spin_lock (&sq->lock, &ctxsq);
list_remove (sq->proc_list, &proc->suspension_link); list_remove (sq->proc_list, &proc->suspension_link);
@@ -71,7 +72,6 @@ static void proc_mutex_resume (struct proc* proc) {
atomic_fetch_add (&cpu->proc_run_q_count, 1); atomic_fetch_add (&cpu->proc_run_q_count, 1);
spin_unlock (&sq->lock, &ctxsq); spin_unlock (&sq->lock, &ctxsq);
}
spin_unlock (&proc->lock, &ctxpr); spin_unlock (&proc->lock, &ctxpr);
spin_unlock (&cpu->lock, &ctxcpu); spin_unlock (&cpu->lock, &ctxcpu);