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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/kernel/irq/internals.h
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@@ -29,12 +29,14 @@
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  * IRQTF_WARNED    - warning "IRQ_WAKE_THREAD w/o thread_fn" has been printed
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  * IRQTF_AFFINITY  - irq thread is requested to adjust affinity
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  * IRQTF_FORCED_THREAD  - irq action is force threaded
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+ * IRQTF_READY     - signals that irq thread is ready
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  */
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 enum {
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 	IRQTF_RUNTHREAD,
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 	IRQTF_WARNED,
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 	IRQTF_AFFINITY,
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 	IRQTF_FORCED_THREAD,
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+	IRQTF_READY,
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 };
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 /*
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@@ -49,6 +51,7 @@
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  * IRQS_WAITING			- irq is waiting
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  * IRQS_PENDING			- irq is pending and replayed later
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  * IRQS_SUSPENDED		- irq is suspended
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+ * IRQS_NMI			- irq line is used to deliver NMIs
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  */
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 enum {
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 	IRQS_AUTODETECT		= 0x00000001,
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@@ -60,6 +63,7 @@
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 	IRQS_PENDING		= 0x00000200,
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 	IRQS_SUSPENDED		= 0x00000800,
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 	IRQS_TIMINGS		= 0x00001000,
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+	IRQS_NMI		= 0x00002000,
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 };
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 #include "debug.h"
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@@ -106,7 +110,7 @@
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 irqreturn_t handle_irq_event(struct irq_desc *desc);
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 /* Resending of interrupts :*/
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-void check_irq_resend(struct irq_desc *desc);
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+int check_irq_resend(struct irq_desc *desc, bool inject);
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 bool irq_wait_for_poll(struct irq_desc *desc);
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 void __irq_wake_thread(struct irq_desc *desc, struct irqaction *action);
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@@ -355,6 +359,16 @@
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 	return value & U16_MAX;
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 }
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+static __always_inline void irq_timings_push(u64 ts, int irq)
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+{
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+	struct irq_timings *timings = this_cpu_ptr(&irq_timings);
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+
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+	timings->values[timings->count & IRQ_TIMINGS_MASK] =
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+		irq_timing_encode(ts, irq);
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+
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+	timings->count++;
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+}
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+
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 /*
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  * The function record_irq_time is only called in one place in the
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  * interrupts handler. We want this function always inline so the code
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@@ -368,15 +382,8 @@
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 	if (!static_branch_likely(&irq_timing_enabled))
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 		return;
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-	if (desc->istate & IRQS_TIMINGS) {
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-		struct irq_timings *timings = this_cpu_ptr(&irq_timings);
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-
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-		timings->values[timings->count & IRQ_TIMINGS_MASK] =
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-			irq_timing_encode(local_clock(),
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-					  irq_desc_get_irq(desc));
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-
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-		timings->count++;
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-	}
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+	if (desc->istate & IRQS_TIMINGS)
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+		irq_timings_push(local_clock(), irq_desc_get_irq(desc));
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 }
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 #else
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 static inline void irq_remove_timings(struct irq_desc *desc) {}
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@@ -420,6 +427,10 @@
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 {
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 	return desc->pending_mask;
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 }
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+static inline bool handle_enforce_irqctx(struct irq_data *data)
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+{
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+	return irqd_is_handle_enforce_irqctx(data);
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+}
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 bool irq_fixup_move_pending(struct irq_desc *desc, bool force_clear);
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 #else /* CONFIG_GENERIC_PENDING_IRQ */
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 static inline bool irq_can_move_pcntxt(struct irq_data *data)
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@@ -446,6 +457,10 @@
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 {
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 	return false;
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 }
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+static inline bool handle_enforce_irqctx(struct irq_data *data)
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+{
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+	return false;
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+}
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 #endif /* !CONFIG_GENERIC_PENDING_IRQ */
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 #if !defined(CONFIG_IRQ_DOMAIN) || !defined(CONFIG_IRQ_DOMAIN_HIERARCHY)
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@@ -460,6 +475,15 @@
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 }
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 #endif
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477
 
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+static inline struct irq_data *irqd_get_parent_data(struct irq_data *irqd)
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+{
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+#ifdef CONFIG_IRQ_DOMAIN_HIERARCHY
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+	return irqd->parent_data;
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+#else
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+	return NULL;
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+#endif
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+}
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+
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 #ifdef CONFIG_GENERIC_IRQ_DEBUGFS
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 #include <linux/debugfs.h>
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