From: Thomas Gleixner <tglx@linutronix.de>
To: Heena Sirwani <heenasirwani@gmail.com>
Cc: linux-kernel@vger.kernel.org, john.stultz@linaro.org, arnd@arndb.de
Subject: Re: [PATCH v7] timekeeping: Added a function to return tv_sec portion of ktime_get_ts64()
Date: Wed, 29 Oct 2014 10:21:18 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.11.1410291020140.5308@nanos> (raw)
In-Reply-To: <20141029091317.GA1138@heena-HP-Compaq-8200-Elite-MT-PC>
On Wed, 29 Oct 2014, Heena Sirwani wrote:
> +time64_t ktime_get_seconds(void)
> +{
> + time64_t seconds;
> + struct timekeeper *tk = &tk_core.timekeeper;
> + unsigned int seq;
> +
> + WARN_ON(timekeeping_suspended);
You want to have the same 64bit logic as you did for
ktime_get_real_seconds. So on 64bit it boils down to return
tk->ktime_sec.
> +
> + do {
> + seq = read_seqcount_begin(&tk_core.seq);
> + seconds = tk->ktime_sec;
> +
> + } while (read_seqcount_retry(&tk_core.seq, seq));
> +
> + return seconds;
> +}
Thanks,
tglx
next prev parent reply other threads:[~2014-10-29 9:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-29 9:13 Heena Sirwani
2014-10-29 9:21 ` Thomas Gleixner [this message]
2014-10-29 9:37 ` Arnd Bergmann
2014-10-29 9:40 ` Thomas Gleixner
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