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srcu: Compute snp_seq earlier in srcu_funnel_gp_start() 

Currently, srcu_funnel_gp_start() tests snp->srcu_have_cbs[idx] and then
separately assigns it to the snp_seq local variable.  This commit does
the assignment earlier to simplify the code a bit.  While in the area,
this commit also takes advantage of the 100-character line limit to put
the call to srcu_schedule_cbs_sdp() on a single line.

Co-developed-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Signed-off-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2022-01-26 16:01:26 -08:00
parent 3bedebcf63
commit aeb9b39b8f
1 changed files with 3 additions and 5 deletions
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8
kernel/rcu/srcutree.c
View File

@ -697,15 +697,13 @@ static void srcu_funnel_gp_start(struct srcu_struct *ssp, struct srcu_data *sdp,
if (rcu_seq_done(&ssp->srcu_gp_seq, s) && snp != snp_leaf)
return; /* GP already done and CBs recorded. */
spin_lock_irqsave_rcu_node(snp, flags);
if (ULONG_CMP_GE(snp->srcu_have_cbs[idx], s)) {
snp_seq = snp->srcu_have_cbs[idx];
snp_seq = snp->srcu_have_cbs[idx];
if (ULONG_CMP_GE(snp_seq, s)) {
if (snp == snp_leaf && snp_seq == s)
snp->srcu_data_have_cbs[idx] |= sdp->grpmask;
spin_unlock_irqrestore_rcu_node(snp, flags);
if (snp == snp_leaf && snp_seq != s) {
srcu_schedule_cbs_sdp(sdp, do_norm
? SRCU_INTERVAL
: 0);
srcu_schedule_cbs_sdp(sdp, do_norm ? SRCU_INTERVAL : 0);
return;
}
if (!do_norm)