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From: Stephen Boyd <sboyd@codeaurora.org>
To: John Stultz <john.stultz@linaro.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: Dave Jones <davej@codemonkey.org.uk>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Richard Cochran <richardcochran@gmail.com>,
	Prarit Bhargava <prarit@redhat.com>,
	Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 04/10] clocksource: Add max_cycles to clocksource structure
Date: Fri, 09 Jan 2015 18:06:27 -0800	[thread overview]
Message-ID: <54B08923.3070709@codeaurora.org> (raw)
In-Reply-To: <1420850068-27828-5-git-send-email-john.stultz@linaro.org>

On 01/09/2015 04:34 PM, John Stultz wrote:
> diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
> index abcafaa..9b54cb9 100644
> --- a/include/linux/clocksource.h
> +++ b/include/linux/clocksource.h
> @@ -178,7 +178,7 @@ struct clocksource {
>  #ifdef CONFIG_ARCH_CLOCKSOURCE_DATA
>  	struct arch_clocksource_data archdata;
>  #endif
> -
> +	u64 max_cycles;

Nitpick: Update kernel-doc for new field?

>  	const char *name;
>  	struct list_head list;
>  	int rating;
> @@ -291,7 +291,8 @@ extern struct clocksource * __init clocksource_default_clock(void);
> diff --git a/kernel/time/sched_clock.c b/kernel/time/sched_clock.c
> index c794b84..2910f00 100644
> --- a/kernel/time/sched_clock.c
> +++ b/kernel/time/sched_clock.c
> @@ -126,7 +126,7 @@ void __init sched_clock_register(u64 (*read)(void), int bits,
>  	new_mask = CLOCKSOURCE_MASK(bits);
>  
>  	/* calculate how many ns until we risk wrapping */
> -	wrap = clocks_calc_max_nsecs(new_mult, new_shift, 0, new_mask);
> +	wrap = clocks_calc_max_nsecs(new_mult, new_shift, 0, new_mask, 0);

Should be NULL instead of 0? Otherwise I think sparse would complain.

Otherwise:

Acked-by: Stephen Boyd <sboyd@codeaurora.org>

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project


  reply	other threads:[~2015-01-10  2:06 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-10  0:34 [PATCH 00/10][RFC] Increased clocksource validation and cleanups John Stultz
2015-01-10  0:34 ` [PATCH 01/10] clocksource: Simplify clocks_calc_max_nsecs logic John Stultz
2015-01-10  0:34 ` [PATCH 02/10] clocksource: Simplify logic around clocksource wrapping saftey margins John Stultz
2015-01-10  2:03   ` Stephen Boyd
2015-01-10  0:34 ` [PATCH 03/10] clocksource: Remove clocksource_max_deferment() John Stultz
2015-01-11 11:47   ` Richard Cochran
2015-01-12 18:36     ` John Stultz
2015-01-12 20:16       ` Richard Cochran
2015-01-10  0:34 ` [PATCH 04/10] clocksource: Add max_cycles to clocksource structure John Stultz
2015-01-10  2:06   ` Stephen Boyd [this message]
2015-01-10  0:34 ` [PATCH 05/10] time: Add debugging checks to warn if we see delays John Stultz
2015-01-10  0:34 ` [PATCH 06/10] time: Cap clocksource reads to the clocksource max_cycles value John Stultz
2015-01-11 12:41   ` Richard Cochran
2015-01-12 18:54     ` John Stultz
2015-01-12 19:02       ` Linus Torvalds
2015-01-12 20:37         ` Richard Cochran
2015-01-12 20:30       ` Richard Cochran
2015-01-12 20:49         ` Richard Cochran
2015-01-13 11:11   ` Peter Zijlstra
2015-01-13 21:33     ` John Stultz
2015-01-13 22:51       ` Linus Torvalds
2015-01-14  9:35       ` Peter Zijlstra
2015-01-22 20:55         ` John Stultz
2015-01-10  0:34 ` [PATCH 07/10] time: Try to catch clocksource delta underflows John Stultz
2015-01-10  0:34 ` [PATCH 08/10] clocksource: Mostly kill clocksource_register() John Stultz
2015-01-10  0:34 ` [PATCH 09/10] sparc: Convert to using clocksource_register_hz() John Stultz
2015-01-10  0:34 ` [PATCH 10/10] clocksource: Add some debug info about clocksources being registered John Stultz
2015-01-10  2:02   ` Stephen Boyd
2015-01-22  0:51     ` John Stultz
2015-01-22 12:27       ` Prarit Bhargava
2015-01-11 11:41 ` [PATCH 00/10][RFC] Increased clocksource validation and cleanups Richard Cochran
2015-01-12 18:22   ` John Stultz
2015-01-12 20:45     ` Richard Cochran

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