From: Thomas Gleixner <tglx@linutronix.de>
To: Jean Delvare <jdelvare@suse.de>
Cc: linux-pm@vger.kernel.org, Zhang Rui <rui.zhang@intel.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Daniel Lezcano <daniel.lezcano@linaro.org>
Subject: Re: [PATCH 1/3] Subject: nohz: Expose tick_nohz_enabled
Date: Mon, 11 Jan 2016 18:10:39 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.11.1601111810300.3575@nanos> (raw)
In-Reply-To: <20160111174031.6cc73575@endymion.delvare>
On Mon, 11 Jan 2016, Jean Delvare wrote:
> The cpuidle subsystem needs it.
>
> Signed-off-by: Jean Delvare <jdelvare@suse.de>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
> ---
> include/linux/tick.h | 2 ++
> kernel/time/tick-sched.c | 2 +-
> 2 files changed, 3 insertions(+), 1 deletion(-)
>
> --- linux-4.4.orig/include/linux/tick.h 2016-01-11 00:01:32.000000000 +0100
> +++ linux-4.4/include/linux/tick.h 2016-01-11 15:10:46.334547548 +0100
> @@ -98,6 +98,7 @@ static inline void tick_broadcast_exit(v
> }
>
> #ifdef CONFIG_NO_HZ_COMMON
> +extern int tick_nohz_enabled;
> extern int tick_nohz_tick_stopped(void);
> extern void tick_nohz_idle_enter(void);
> extern void tick_nohz_idle_exit(void);
> @@ -106,6 +107,7 @@ extern ktime_t tick_nohz_get_sleep_lengt
> extern u64 get_cpu_idle_time_us(int cpu, u64 *last_update_time);
> extern u64 get_cpu_iowait_time_us(int cpu, u64 *last_update_time);
> #else /* !CONFIG_NO_HZ_COMMON */
> +#define tick_nohz_enabled (0)
> static inline int tick_nohz_tick_stopped(void) { return 0; }
> static inline void tick_nohz_idle_enter(void) { }
> static inline void tick_nohz_idle_exit(void) { }
> --- linux-4.4.orig/kernel/time/tick-sched.c 2016-01-11 15:06:54.776653477 +0100
> +++ linux-4.4/kernel/time/tick-sched.c 2016-01-11 15:09:19.022700899 +0100
> @@ -387,7 +387,7 @@ void __init tick_nohz_init(void)
> /*
> * NO HZ enabled ?
> */
> -static int tick_nohz_enabled __read_mostly = 1;
> +int tick_nohz_enabled __read_mostly = 1;
> unsigned long tick_nohz_active __read_mostly;
> /*
> * Enable / Disable tickless mode
>
> --
> Jean Delvare
> SUSE L3 Support
>
next prev parent reply other threads:[~2016-01-11 17:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-11 16:39 [PATCH 0/3] Use the ladder cpuidle governor when appropriate Jean Delvare
2016-01-11 16:40 ` [PATCH 1/3] Subject: nohz: Expose tick_nohz_enabled Jean Delvare
2016-01-11 16:44 ` Jean Delvare
2016-01-11 17:10 ` Thomas Gleixner [this message]
2016-01-11 16:41 ` [PATCH 2/3] cpuidle: Default to ladder governor on ticking systems Jean Delvare
2016-01-11 16:43 ` [PATCH 3/3] cpuidle: Don't enable all governors by default Jean Delvare
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=alpine.DEB.2.11.1601111810300.3575@nanos \
--to=tglx@linutronix.de \
--cc=daniel.lezcano@linaro.org \
--cc=jdelvare@suse.de \
--cc=linux-pm@vger.kernel.org \
--cc=rjw@rjwysocki.net \
--cc=rui.zhang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox