kernel_5.10 no rt

hc

2023-12-11 6778948f9de86c3cfaf36725a7c87dcff9ba247f

 kernel/mm/vmstat.c
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@@ -321,7 +321,6 @@
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 	long x;
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 	long t;
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-	preempt_disable_rt();
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 	x = delta + __this_cpu_read(*p);
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 	t = __this_cpu_read(pcp->stat_threshold);
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@@ -331,7 +330,6 @@
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 		x = 0;
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 	}
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 	__this_cpu_write(*p, x);
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-	preempt_enable_rt();
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 }
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 EXPORT_SYMBOL(__mod_zone_page_state);
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@@ -348,7 +346,6 @@
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 		delta >>= PAGE_SHIFT;
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 	}
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-	preempt_disable_rt();
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 	x = delta + __this_cpu_read(*p);
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 	t = __this_cpu_read(pcp->stat_threshold);
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@@ -358,7 +355,6 @@
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 		x = 0;
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 	}
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 	__this_cpu_write(*p, x);
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-	preempt_enable_rt();
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 }
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 EXPORT_SYMBOL(__mod_node_page_state);
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@@ -391,7 +387,6 @@
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 	s8 __percpu *p = pcp->vm_stat_diff + item;
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 	s8 v, t;
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-	preempt_disable_rt();
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 	v = __this_cpu_inc_return(*p);
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 	t = __this_cpu_read(pcp->stat_threshold);
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 	if (unlikely(v > t)) {
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@@ -400,7 +395,6 @@
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 		zone_page_state_add(v + overstep, zone, item);
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 		__this_cpu_write(*p, -overstep);
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 	}
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-	preempt_enable_rt();
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 }
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 void __inc_node_state(struct pglist_data *pgdat, enum node_stat_item item)
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@@ -411,7 +405,6 @@
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 	VM_WARN_ON_ONCE(vmstat_item_in_bytes(item));
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-	preempt_disable_rt();
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 	v = __this_cpu_inc_return(*p);
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 	t = __this_cpu_read(pcp->stat_threshold);
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 	if (unlikely(v > t)) {
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@@ -420,7 +413,6 @@
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 		node_page_state_add(v + overstep, pgdat, item);
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 		__this_cpu_write(*p, -overstep);
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 	}
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-	preempt_enable_rt();
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 }
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 void __inc_zone_page_state(struct page *page, enum zone_stat_item item)
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@@ -441,7 +433,6 @@
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 	s8 __percpu *p = pcp->vm_stat_diff + item;
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 	s8 v, t;
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-	preempt_disable_rt();
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 	v = __this_cpu_dec_return(*p);
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 	t = __this_cpu_read(pcp->stat_threshold);
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 	if (unlikely(v < - t)) {
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@@ -450,7 +441,6 @@
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 		zone_page_state_add(v - overstep, zone, item);
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 		__this_cpu_write(*p, overstep);
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 	}
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-	preempt_enable_rt();
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 }
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 void __dec_node_state(struct pglist_data *pgdat, enum node_stat_item item)
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@@ -461,7 +451,6 @@
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 	VM_WARN_ON_ONCE(vmstat_item_in_bytes(item));
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-	preempt_disable_rt();
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 	v = __this_cpu_dec_return(*p);
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 	t = __this_cpu_read(pcp->stat_threshold);
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 	if (unlikely(v < - t)) {
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@@ -470,7 +459,6 @@
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 		node_page_state_add(v - overstep, pgdat, item);
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 		__this_cpu_write(*p, overstep);
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 	}
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-	preempt_enable_rt();
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 }
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 void __dec_zone_page_state(struct page *page, enum zone_stat_item item)