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srcu: Fix long lines in srcu_get_delay()

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This commit creates an srcu_usage pointer named "sup" as a shorter
synonym for the "ssp->srcu_sup" that was bloating several lines of code.

Tested-by: Sachin Sant <sachinp@linux.ibm.com>
Tested-by: "Zhang, Qiang1" <qiang1.zhang@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Tested-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney
2023-03-18 09:34:52 -07:00
parent a7bf4d7c16
commit eabe7625f0
1 changed files with 6 additions and 5 deletions
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11
kernel/rcu/srcutree.c
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@ -616,17 +616,18 @@ static unsigned long srcu_get_delay(struct srcu_struct *ssp)
unsigned long gpstart;
unsigned long j;
unsigned long jbase = SRCU_INTERVAL;
struct srcu_usage *sup = ssp->srcu_sup;
if (ULONG_CMP_LT(READ_ONCE(ssp->srcu_sup->srcu_gp_seq), READ_ONCE(ssp->srcu_sup->srcu_gp_seq_needed_exp)))
if (ULONG_CMP_LT(READ_ONCE(sup->srcu_gp_seq), READ_ONCE(sup->srcu_gp_seq_needed_exp)))
jbase = 0;
if (rcu_seq_state(READ_ONCE(ssp->srcu_sup->srcu_gp_seq))) {
if (rcu_seq_state(READ_ONCE(sup->srcu_gp_seq))) {
j = jiffies - 1;
gpstart = READ_ONCE(ssp->srcu_sup->srcu_gp_start);
gpstart = READ_ONCE(sup->srcu_gp_start);
if (time_after(j, gpstart))
jbase += j - gpstart;
if (!jbase) {
WRITE_ONCE(ssp->srcu_sup->srcu_n_exp_nodelay, READ_ONCE(ssp->srcu_sup->srcu_n_exp_nodelay) + 1);
if (READ_ONCE(ssp->srcu_sup->srcu_n_exp_nodelay) > srcu_max_nodelay_phase)
WRITE_ONCE(sup->srcu_n_exp_nodelay, READ_ONCE(sup->srcu_n_exp_nodelay) + 1);
if (READ_ONCE(sup->srcu_n_exp_nodelay) > srcu_max_nodelay_phase)
jbase = 1;
}
}