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From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux PM <linux-pm@vger.kernel.org>
Subject: Re: [PATCH 18/38] powercap: intel_rapl: Replace deprecated CPU-hotplug functions.
Date: Wed, 4 Aug 2021 20:14:59 +0200 [thread overview]
Message-ID: <CAJZ5v0gsS+v23yMBnOV8GTiCF9OaXSLffJn1p+K3kJaQQkzEcw@mail.gmail.com> (raw)
In-Reply-To: <20210803141621.780504-19-bigeasy@linutronix.de>
On Tue, Aug 3, 2021 at 4:17 PM Sebastian Andrzej Siewior
<bigeasy@linutronix.de> wrote:
>
> 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: "Rafael J. Wysocki" <rjw@rjwysocki.net>
> Cc: linux-pm@vger.kernel.org
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> ---
> drivers/powercap/intel_rapl_common.c | 50 ++++++++++++++--------------
> 1 file changed, 25 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c
> index 73cf68af97700..7c0099e7a6d72 100644
> --- a/drivers/powercap/intel_rapl_common.c
> +++ b/drivers/powercap/intel_rapl_common.c
> @@ -158,16 +158,16 @@ static int get_energy_counter(struct powercap_zone *power_zone,
> /* prevent CPU hotplug, make sure the RAPL domain does not go
> * away while reading the counter.
> */
> - get_online_cpus();
> + cpus_read_lock();
> rd = power_zone_to_rapl_domain(power_zone);
>
> if (!rapl_read_data_raw(rd, ENERGY_COUNTER, true, &energy_now)) {
> *energy_raw = energy_now;
> - put_online_cpus();
> + cpus_read_unlock();
>
> return 0;
> }
> - put_online_cpus();
> + cpus_read_unlock();
>
> return -EIO;
> }
> @@ -216,11 +216,11 @@ static int set_domain_enable(struct powercap_zone *power_zone, bool mode)
> if (rd->state & DOMAIN_STATE_BIOS_LOCKED)
> return -EACCES;
>
> - get_online_cpus();
> + cpus_read_lock();
> rapl_write_data_raw(rd, PL1_ENABLE, mode);
> if (rapl_defaults->set_floor_freq)
> rapl_defaults->set_floor_freq(rd, mode);
> - put_online_cpus();
> + cpus_read_unlock();
>
> return 0;
> }
> @@ -234,13 +234,13 @@ static int get_domain_enable(struct powercap_zone *power_zone, bool *mode)
> *mode = false;
> return 0;
> }
> - get_online_cpus();
> + cpus_read_lock();
> if (rapl_read_data_raw(rd, PL1_ENABLE, true, &val)) {
> - put_online_cpus();
> + cpus_read_unlock();
> return -EIO;
> }
> *mode = val;
> - put_online_cpus();
> + cpus_read_unlock();
>
> return 0;
> }
> @@ -317,7 +317,7 @@ static int set_power_limit(struct powercap_zone *power_zone, int cid,
> int ret = 0;
> int id;
>
> - get_online_cpus();
> + cpus_read_lock();
> rd = power_zone_to_rapl_domain(power_zone);
> id = contraint_to_pl(rd, cid);
> if (id < 0) {
> @@ -350,7 +350,7 @@ static int set_power_limit(struct powercap_zone *power_zone, int cid,
> if (!ret)
> package_power_limit_irq_save(rp);
> set_exit:
> - put_online_cpus();
> + cpus_read_unlock();
> return ret;
> }
>
> @@ -363,7 +363,7 @@ static int get_current_power_limit(struct powercap_zone *power_zone, int cid,
> int ret = 0;
> int id;
>
> - get_online_cpus();
> + cpus_read_lock();
> rd = power_zone_to_rapl_domain(power_zone);
> id = contraint_to_pl(rd, cid);
> if (id < 0) {
> @@ -382,7 +382,7 @@ static int get_current_power_limit(struct powercap_zone *power_zone, int cid,
> prim = POWER_LIMIT4;
> break;
> default:
> - put_online_cpus();
> + cpus_read_unlock();
> return -EINVAL;
> }
> if (rapl_read_data_raw(rd, prim, true, &val))
> @@ -391,7 +391,7 @@ static int get_current_power_limit(struct powercap_zone *power_zone, int cid,
> *data = val;
>
> get_exit:
> - put_online_cpus();
> + cpus_read_unlock();
>
> return ret;
> }
> @@ -403,7 +403,7 @@ static int set_time_window(struct powercap_zone *power_zone, int cid,
> int ret = 0;
> int id;
>
> - get_online_cpus();
> + cpus_read_lock();
> rd = power_zone_to_rapl_domain(power_zone);
> id = contraint_to_pl(rd, cid);
> if (id < 0) {
> @@ -423,7 +423,7 @@ static int set_time_window(struct powercap_zone *power_zone, int cid,
> }
>
> set_time_exit:
> - put_online_cpus();
> + cpus_read_unlock();
> return ret;
> }
>
> @@ -435,7 +435,7 @@ static int get_time_window(struct powercap_zone *power_zone, int cid,
> int ret = 0;
> int id;
>
> - get_online_cpus();
> + cpus_read_lock();
> rd = power_zone_to_rapl_domain(power_zone);
> id = contraint_to_pl(rd, cid);
> if (id < 0) {
> @@ -458,14 +458,14 @@ static int get_time_window(struct powercap_zone *power_zone, int cid,
> val = 0;
> break;
> default:
> - put_online_cpus();
> + cpus_read_unlock();
> return -EINVAL;
> }
> if (!ret)
> *data = val;
>
> get_time_exit:
> - put_online_cpus();
> + cpus_read_unlock();
>
> return ret;
> }
> @@ -491,7 +491,7 @@ static int get_max_power(struct powercap_zone *power_zone, int id, u64 *data)
> int prim;
> int ret = 0;
>
> - get_online_cpus();
> + cpus_read_lock();
> rd = power_zone_to_rapl_domain(power_zone);
> switch (rd->rpl[id].prim_id) {
> case PL1_ENABLE:
> @@ -504,7 +504,7 @@ static int get_max_power(struct powercap_zone *power_zone, int id, u64 *data)
> prim = MAX_POWER;
> break;
> default:
> - put_online_cpus();
> + cpus_read_unlock();
> return -EINVAL;
> }
> if (rapl_read_data_raw(rd, prim, true, &val))
> @@ -516,7 +516,7 @@ static int get_max_power(struct powercap_zone *power_zone, int id, u64 *data)
> if (rd->rpl[id].prim_id == PL4_ENABLE)
> *data = *data * 2;
>
> - put_online_cpus();
> + cpus_read_unlock();
>
> return ret;
> }
> @@ -1358,7 +1358,7 @@ static void power_limit_state_save(void)
> struct rapl_domain *rd;
> int nr_pl, ret, i;
>
> - get_online_cpus();
> + cpus_read_lock();
> list_for_each_entry(rp, &rapl_packages, plist) {
> if (!rp->power_zone)
> continue;
> @@ -1390,7 +1390,7 @@ static void power_limit_state_save(void)
> }
> }
> }
> - put_online_cpus();
> + cpus_read_unlock();
> }
>
> static void power_limit_state_restore(void)
> @@ -1399,7 +1399,7 @@ static void power_limit_state_restore(void)
> struct rapl_domain *rd;
> int nr_pl, i;
>
> - get_online_cpus();
> + cpus_read_lock();
> list_for_each_entry(rp, &rapl_packages, plist) {
> if (!rp->power_zone)
> continue;
> @@ -1425,7 +1425,7 @@ static void power_limit_state_restore(void)
> }
> }
> }
> - put_online_cpus();
> + cpus_read_unlock();
> }
>
> static int rapl_pm_callback(struct notifier_block *nb,
> --
Applied as 5.15 material, thanks!
next prev parent reply other threads:[~2021-08-04 18:15 UTC|newest]
Thread overview: 94+ 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 ` [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 ` [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 15:03 ` [Nouveau] " Karol Herbst
2021-08-04 1:07 ` 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
2021-08-12 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 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 [this message]
2021-08-03 14:16 ` [PATCH 19/38] thermal: " Sebastian Andrzej Siewior
2021-08-14 10:52 ` Daniel Lezcano
2021-09-10 22:45 ` [tip: smp/urgent] " 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 ` [PATCH 20/38] mm: " Sebastian Andrzej Siewior
2021-08-27 23:53 ` [tip: smp/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-03 14:16 ` [PATCH 21/38] virtio_net: " 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 16:10 ` Sebastian Andrzej Siewior
2021-08-18 13:38 ` (subset) " Michael Ellerman
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