From: Neeraj Upadhyay <neeraju@codeaurora.org>
To: paulmck@linux.vnet.ibm.com, josh@joshtriplett.org,
rostedt@goodmis.org, mathieu.desnoyers@efficios.com,
jiangshanlai@gmail.com
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Query regarding srcu_funnel_exp_start()
Date: Fri, 27 Oct 2017 14:23:07 +0530 [thread overview]
Message-ID: <481c3c8d-2385-2e38-dfe6-0cb9b6855b8a@codeaurora.org> (raw)
Hi,
One query regarding srcu_funnel_exp_start() function in
kernel/rcu/srcutree.c.
static void srcu_funnel_exp_start(struct srcu_struct *sp, struct
srcu_node *snp,
unsigned long s)
{
<snip>
if (!ULONG_CMP_LT(sp->srcu_gp_seq_needed_exp, s))
sp->srcu_gp_seq_needed_exp = s;
<snip>
}
Why is sp->srcu_gp_seq_needed_exp set to 's' if srcu_gp_seq_needed_exp is >=
's'. Shouldn't srcu_gp_seq_needed_exp be equal to the greater of both?
Thanks
Neeraj
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
member of the Code Aurora Forum, hosted by The Linux Foundation
next reply other threads:[~2017-10-27 8:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-27 8:53 Neeraj Upadhyay [this message]
2017-10-27 12:26 ` Paul E. McKenney
2017-10-27 16:45 ` Neeraj Upadhyay
2017-10-27 22:20 ` Paul E. McKenney
2017-10-28 3:49 ` Neeraj Upadhyay
2017-10-29 19:24 ` Paul E. McKenney
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