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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: linux-kernel@vger.kernel.org
Cc: tglx@linutronix.de, Peter Zijlstra <peterz@infradead.org>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-mm@kvack.org
Subject: [PATCH 20/38] mm: Replace deprecated CPU-hotplug functions.
Date: Tue,  3 Aug 2021 16:16:03 +0200	[thread overview]
Message-ID: <20210803141621.780504-21-bigeasy@linutronix.de> (raw)
In-Reply-To: <20210803141621.780504-1-bigeasy@linutronix.de>

The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().

Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 mm/swap_slots.c |  4 ++--
 mm/vmstat.c     | 12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/mm/swap_slots.c b/mm/swap_slots.c
index a66f3e0ec9733..16f706c55d925 100644
--- a/mm/swap_slots.c
+++ b/mm/swap_slots.c
@@ -70,9 +70,9 @@ void disable_swap_slots_cache_lock(void)
 	swap_slot_cache_enabled = false;
 	if (swap_slot_cache_initialized) {
 		/* serialize with cpu hotplug operations */
-		get_online_cpus();
+		cpus_read_lock();
 		__drain_swap_slots_cache(SLOTS_CACHE|SLOTS_CACHE_RET);
-		put_online_cpus();
+		cpus_read_unlock();
 	}
 }
 
diff --git a/mm/vmstat.c b/mm/vmstat.c
index b0534e068166c..a7ed56ac4c0b4 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -129,9 +129,9 @@ static void sum_vm_events(unsigned long *ret)
 */
 void all_vm_events(unsigned long *ret)
 {
-	get_online_cpus();
+	cpus_read_lock();
 	sum_vm_events(ret);
-	put_online_cpus();
+	cpus_read_unlock();
 }
 EXPORT_SYMBOL_GPL(all_vm_events);
 
@@ -1948,7 +1948,7 @@ static void vmstat_shepherd(struct work_struct *w)
 {
 	int cpu;
 
-	get_online_cpus();
+	cpus_read_lock();
 	/* Check processors whose vmstat worker threads have been disabled */
 	for_each_online_cpu(cpu) {
 		struct delayed_work *dw = &per_cpu(vmstat_work, cpu);
@@ -1958,7 +1958,7 @@ static void vmstat_shepherd(struct work_struct *w)
 
 		cond_resched();
 	}
-	put_online_cpus();
+	cpus_read_unlock();
 
 	schedule_delayed_work(&shepherd,
 		round_jiffies_relative(sysctl_stat_interval));
@@ -2037,9 +2037,9 @@ void __init init_mm_internals(void)
 	if (ret < 0)
 		pr_err("vmstat: failed to register 'online' hotplug state\n");
 
-	get_online_cpus();
+	cpus_read_lock();
 	init_cpu_node_state();
-	put_online_cpus();
+	cpus_read_unlock();
 
 	start_shepherd_timer();
 #endif
-- 
2.32.0


  parent reply	other threads:[~2021-08-03 14:18 UTC|newest]

Thread overview: 113+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-03 14:15 [PATCH 00/38] Replace deprecated CPU-hotplug Sebastian Andrzej Siewior
2021-08-03 14:15 ` Sebastian Andrzej Siewior
2021-08-03 14:15 ` [Nouveau] " Sebastian Andrzej Siewior
2021-08-03 14:15 ` Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 01/38] Documentation: Replace deprecated CPU-hotplug functions Sebastian Andrzej Siewior
2021-08-27 23:53   ` [tip: smp/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 02/38] MIPS: " Sebastian Andrzej Siewior
2021-08-05  9:02   ` Thomas Bogendoerfer
2021-08-03 14:15 ` [PATCH 03/38] powerpc: " Sebastian Andrzej Siewior
2021-08-03 14:15   ` Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 04/38] s390: " Sebastian Andrzej Siewior
2021-08-03 15:40   ` Heiko Carstens
2021-08-03 14:15 ` [PATCH 05/38] s390/sclp: " Sebastian Andrzej Siewior
2021-08-03 15:40   ` Heiko Carstens
2021-08-03 14:15 ` [PATCH 06/38] x86/mmiotrace: " Sebastian Andrzej Siewior
2021-08-03 14:15   ` [Nouveau] " Sebastian Andrzej Siewior
2021-08-03 15:03   ` Karol Herbst
2021-08-03 15:03     ` Karol Herbst
2021-08-04  1:07   ` Steven Rostedt
2021-08-04  1:07     ` [Nouveau] " Steven Rostedt
2021-08-10 12:52   ` [tip: x86/cleanups] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 07/38] x86/mtrr: " Sebastian Andrzej Siewior
2021-08-10 12:52   ` [tip: x86/cleanups] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 08/38] x86/microcode: " Sebastian Andrzej Siewior
2021-08-10 12:52   ` [tip: x86/cleanups] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 09/38] x86/mce/inject: " Sebastian Andrzej Siewior
2021-08-10 12:52   ` [tip: x86/cleanups] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 10/38] perf/x86/intel: " Sebastian Andrzej Siewior
2021-08-10 13:04   ` [tip: perf/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-26  8:09   ` tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 11/38] perf/hw_breakpoint: " Sebastian Andrzej Siewior
2021-08-10 13:04   ` [tip: perf/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-26  8:09   ` tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 12/38] crypto: virtio: " Sebastian Andrzej Siewior
2021-08-03 14:15   ` Sebastian Andrzej Siewior
2021-08-12 11:36   ` Herbert Xu
2021-08-12 11:36     ` Herbert Xu
2021-08-03 14:15 ` [PATCH 13/38] hwmon: " Sebastian Andrzej Siewior
2021-08-03 15:29   ` Guenter Roeck
2021-08-03 14:15 ` [PATCH 14/38] coresight: " Sebastian Andrzej Siewior
2021-08-03 14:15   ` Sebastian Andrzej Siewior
2021-08-03 15:52   ` Mathieu Poirier
2021-08-03 15:52     ` Mathieu Poirier
2021-08-03 14:15 ` [PATCH 15/38] md/raid5: " Sebastian Andrzej Siewior
2021-08-05 16:20   ` Song Liu
2021-08-27 23:53   ` [tip: smp/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:15 ` [PATCH 16/38] sgi-xpc: " Sebastian Andrzej Siewior
2021-08-03 15:54   ` Steve Wahl
2021-08-03 21:30   ` Robin Holt
2021-08-03 14:16 ` [PATCH 17/38] platform/x86: " Sebastian Andrzej Siewior
2021-08-06 13:36   ` Hans de Goede
2021-08-03 14:16 ` [PATCH 18/38] powercap: intel_rapl: " Sebastian Andrzej Siewior
2021-08-04 18:14   ` Rafael J. Wysocki
2021-08-03 14:16 ` [PATCH 19/38] thermal: " Sebastian Andrzej Siewior
2021-08-14 10:52   ` Daniel Lezcano
2021-09-09 14:38   ` [thermal: thermal/next] thermal/drivers/intel_powerclamp: " thermal-bot for Sebastian Andrzej Siewior
2021-09-10 22:45   ` [tip: smp/urgent] thermal: " tip-bot2 for Sebastian Andrzej Siewior
2021-09-11 20:48     ` Daniel Lezcano
2021-09-11 21:11       ` Borislav Petkov
2021-08-03 14:16 ` Sebastian Andrzej Siewior [this message]
2021-08-27 23:53   ` [tip: smp/core] mm: " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:16 ` [PATCH 21/38] virtio_net: " Sebastian Andrzej Siewior
2021-08-03 14:16   ` Sebastian Andrzej Siewior
2021-08-04 22:41   ` Jakub Kicinski
2021-08-03 14:16 ` [PATCH 22/38] net/af_iucv: " Sebastian Andrzej Siewior
2021-08-04  6:36   ` Julian Wiedmann
2021-08-03 14:16 ` [PATCH 23/38] net: " Sebastian Andrzej Siewior
2021-08-03 14:16 ` [PATCH 24/38] cgroup: " Sebastian Andrzej Siewior
2021-08-09 22:37   ` Tejun Heo
2021-08-03 14:16 ` [PATCH 25/38] genirq/affinity: " Sebastian Andrzej Siewior
2021-08-10 12:58   ` [tip: irq/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:16 ` [PATCH 26/38] livepatch: " Sebastian Andrzej Siewior
2021-08-04  7:52   ` Petr Mladek
2021-08-19 10:01     ` Jiri Kosina
2021-08-03 14:16 ` [PATCH 27/38] padata: " Sebastian Andrzej Siewior
2021-08-04 14:52   ` Daniel Jordan
2021-08-12 11:36   ` Herbert Xu
2021-08-03 14:16 ` [PATCH 28/38] cpufreq: " Sebastian Andrzej Siewior
2021-08-04 18:19   ` Rafael J. Wysocki
2021-08-03 14:16 ` [PATCH 29/38] ACPI: processor: " Sebastian Andrzej Siewior
2021-08-04 18:27   ` Rafael J. Wysocki
2021-08-03 14:16 ` [PATCH 30/38] ACPI: PM: s2idle: " Sebastian Andrzej Siewior
2021-08-04 18:20   ` Rafael J. Wysocki
2021-08-03 14:16 ` [PATCH 31/38] rcu: " Sebastian Andrzej Siewior
2021-08-03 16:00   ` Paul E. McKenney
2021-08-10 12:42     ` Thomas Gleixner
2021-08-10 18:20       ` Paul E. McKenney
2021-08-03 14:16 ` [PATCH 32/38] sched: " Sebastian Andrzej Siewior
2021-08-10 12:58   ` [tip: sched/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:16 ` [PATCH 33/38] smpboot: " Sebastian Andrzej Siewior
2021-08-10 13:04   ` [tip: smp/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:16 ` [PATCH 34/38] clocksource: " Sebastian Andrzej Siewior
2021-08-10 12:58   ` [tip: timers/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:16 ` [PATCH 35/38] torture: " Sebastian Andrzej Siewior
2021-08-03 14:16 ` [PATCH 36/38] tracing: " Sebastian Andrzej Siewior
2021-08-03 15:16   ` Daniel Bristot de Oliveira
2021-08-04  2:26   ` Steven Rostedt
2021-08-10 13:34     ` Sebastian Andrzej Siewior
2021-08-10 19:12       ` Steven Rostedt
2021-08-03 14:16 ` [PATCH 37/38] workqueue: " Sebastian Andrzej Siewior
2021-08-04  1:36   ` Lai Jiangshan
2021-08-09 22:33   ` Tejun Heo
2021-08-03 14:16 ` [PATCH 38/38] cpu/hotplug: Remove " Sebastian Andrzej Siewior
2021-09-10 22:45   ` [tip: smp/urgent] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 15:30 ` [PATCH 00/38] Replace deprecated CPU-hotplug Hans de Goede
2021-08-03 15:30   ` Hans de Goede
2021-08-03 15:30   ` [Nouveau] " Hans de Goede
2021-08-03 15:30   ` Hans de Goede
2021-08-03 16:10   ` Sebastian Andrzej Siewior
2021-08-03 16:10     ` Sebastian Andrzej Siewior
2021-08-03 16:10     ` [Nouveau] " Sebastian Andrzej Siewior
2021-08-03 16:10     ` Sebastian Andrzej Siewior
2021-08-18 13:38 ` (subset) " Michael Ellerman

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