kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/include/linux/eventfd.h
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@@ -14,7 +14,6 @@
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 #include <linux/err.h>
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 #include <linux/percpu-defs.h>
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 #include <linux/percpu.h>
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-#include <linux/sched.h>
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 /*
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  * CAREFUL: Check include/uapi/asm-generic/fcntl.h when defining
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@@ -44,9 +43,11 @@
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 int eventfd_ctx_remove_wait_queue(struct eventfd_ctx *ctx, wait_queue_entry_t *wait,
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 				  __u64 *cnt);
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-static inline bool eventfd_signal_allowed(void)
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+DECLARE_PER_CPU(int, eventfd_wake_count);
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+
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+static inline bool eventfd_signal_count(void)
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 {
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-	return !current->in_eventfd_signal;
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+	return this_cpu_read(eventfd_wake_count);
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 }
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 #else /* CONFIG_EVENTFD */
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@@ -83,9 +84,9 @@
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 	return -ENOSYS;
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 }
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-static inline bool eventfd_signal_allowed(void)
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+static inline bool eventfd_signal_count(void)
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 {
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-	return true;
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+	return false;
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 }
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 #endif