add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/kernel/sched/loadavg.c
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@@ -231,21 +231,34 @@
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 	return calc_load_idx & 1;
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 }
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-void calc_load_nohz_start(void)
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+static void calc_load_nohz_fold(struct rq *rq)
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 {
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-	struct rq *this_rq = this_rq();
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 	long delta;
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-	/*
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-	 * We're going into NO_HZ mode, if there's any pending delta, fold it
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-	 * into the pending NO_HZ delta.
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-	 */
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-	delta = calc_load_fold_active(this_rq, 0);
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+	delta = calc_load_fold_active(rq, 0);
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 	if (delta) {
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 		int idx = calc_load_write_idx();
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 		atomic_long_add(delta, &calc_load_nohz[idx]);
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 	}
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+}
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+
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+void calc_load_nohz_start(void)
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+{
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+	/*
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+	 * We're going into NO_HZ mode, if there's any pending delta, fold it
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+	 * into the pending NO_HZ delta.
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+	 */
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+	calc_load_nohz_fold(this_rq());
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+}
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+
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+/*
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+ * Keep track of the load for NOHZ_FULL, must be called between
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+ * calc_load_nohz_{start,stop}().
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+ */
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+void calc_load_nohz_remote(struct rq *rq)
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+{
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+	calc_load_nohz_fold(rq);
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 }
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 void calc_load_nohz_stop(void)
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@@ -268,7 +281,7 @@
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 		this_rq->calc_load_update += LOAD_FREQ;
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 }
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-static long calc_load_nohz_fold(void)
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+static long calc_load_nohz_read(void)
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 {
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 	int idx = calc_load_read_idx();
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 	long delta = 0;
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@@ -323,7 +336,7 @@
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 }
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 #else /* !CONFIG_NO_HZ_COMMON */
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-static inline long calc_load_nohz_fold(void) { return 0; }
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+static inline long calc_load_nohz_read(void) { return 0; }
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 static inline void calc_global_nohz(void) { }
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 #endif /* CONFIG_NO_HZ_COMMON */
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@@ -334,7 +347,7 @@
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  *
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  * Called from the global timer code.
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  */
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-void calc_global_load(unsigned long ticks)
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+void calc_global_load(void)
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 {
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 	unsigned long sample_window;
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 	long active, delta;
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@@ -346,7 +359,7 @@
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 	/*
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 	 * Fold the 'old' NO_HZ-delta to include all NO_HZ CPUs.
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 	 */
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-	delta = calc_load_nohz_fold();
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+	delta = calc_load_nohz_read();
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 	if (delta)
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 		atomic_long_add(delta, &calc_load_tasks);
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