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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/kernel/locking/qspinlock_paravirt.h
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@@ -4,7 +4,7 @@
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 #endif
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 #include <linux/hash.h>
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-#include <linux/bootmem.h>
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+#include <linux/memblock.h>
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 #include <linux/debug_locks.h>
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 /*
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@@ -49,8 +49,6 @@
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 struct pv_node {
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 	struct mcs_spinlock	mcs;
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-	struct mcs_spinlock	__res[3];
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-
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 	int			cpu;
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 	u8			state;
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 };
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@@ -91,7 +89,7 @@
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 		if (!(val & _Q_LOCKED_PENDING_MASK) &&
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 		   (cmpxchg_acquire(&lock->locked, 0, _Q_LOCKED_VAL) == 0)) {
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-			qstat_inc(qstat_pv_lock_stealing, true);
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+			lockevent_inc(pv_lock_stealing);
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 			return true;
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 		}
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 		if (!(val & _Q_TAIL_MASK) || (val & _Q_PENDING_MASK))
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@@ -221,7 +219,7 @@
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 		hopcnt++;
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 		if (!cmpxchg(&he->lock, NULL, lock)) {
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 			WRITE_ONCE(he->node, node);
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-			qstat_hop(hopcnt);
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+			lockevent_pv_hop(hopcnt);
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 			return &he->lock;
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 		}
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 	}
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@@ -281,7 +279,7 @@
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 {
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 	struct pv_node *pn = (struct pv_node *)node;
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-	BUILD_BUG_ON(sizeof(struct pv_node) > 5*sizeof(struct mcs_spinlock));
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+	BUILD_BUG_ON(sizeof(struct pv_node) > sizeof(struct qnode));
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 	pn->cpu = smp_processor_id();
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 	pn->state = vcpu_running;
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@@ -322,8 +320,8 @@
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 		smp_store_mb(pn->state, vcpu_halted);
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 		if (!READ_ONCE(node->locked)) {
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-			qstat_inc(qstat_pv_wait_node, true);
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-			qstat_inc(qstat_pv_wait_early, wait_early);
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+			lockevent_inc(pv_wait_node);
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+			lockevent_cond_inc(pv_wait_early, wait_early);
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 			pv_wait(&pn->state, vcpu_halted);
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 		}
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@@ -341,7 +339,8 @@
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 		 * So it is better to spin for a while in the hope that the
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 		 * MCS lock will be released soon.
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 		 */
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-		qstat_inc(qstat_pv_spurious_wakeup, !READ_ONCE(node->locked));
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+		lockevent_cond_inc(pv_spurious_wakeup,
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+				  !READ_ONCE(node->locked));
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 	}
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 	/*
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@@ -418,7 +417,7 @@
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 	/*
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 	 * Tracking # of slowpath locking operations
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 	 */
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-	qstat_inc(qstat_lock_slowpath, true);
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+	lockevent_inc(lock_slowpath);
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 	for (;; waitcnt++) {
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 		/*
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@@ -466,8 +465,8 @@
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 			}
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 		}
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 		WRITE_ONCE(pn->state, vcpu_hashed);
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-		qstat_inc(qstat_pv_wait_head, true);
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-		qstat_inc(qstat_pv_wait_again, waitcnt);
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+		lockevent_inc(pv_wait_head);
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+		lockevent_cond_inc(pv_wait_again, waitcnt);
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 		pv_wait(&lock->locked, _Q_SLOW_VAL);
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 		/*
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@@ -530,7 +529,7 @@
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 	 * vCPU is harmless other than the additional latency in completing
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 	 * the unlock.
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 	 */
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-	qstat_inc(qstat_pv_kick_unlock, true);
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+	lockevent_inc(pv_kick_unlock);
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 	pv_kick(node->cpu);
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 }
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