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rcu: Rename rcu_implicit_dynticks_qs() into rcu_watching_snap_recheck()

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The context_tracking.state RCU_DYNTICKS subvariable has been renamed to
RCU_WATCHING, drop the dyntick reference and update the name of this helper
to express that it rechecks rdp->watching_snap after an earlier
rcu_watching_snap_save().

Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>
This commit is contained in:
Valentin Schneider 2024-04-29 16:41:37 +02:00 committed by Neeraj Upadhyay
parent 49f82c64fd
commit 3b18eb3f9f
5 changed files with 6 additions and 6 deletions
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2
Documentation/RCU/Design/Memory-Ordering/TreeRCU-dyntick.svg
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@ -537,7 +537,7 @@
font-style="normal"
y="-8368.1475"
x="2463.3262"
xml:space="preserve">rcu_implicit_dynticks_qs()</text>
xml:space="preserve">rcu_watching_snap_recheck()</text>
</g>
<g
id="g4504"

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Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-fqs.svg
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@ -899,7 +899,7 @@
font-style="normal"
y="1858.8729"
x="4414.1836"
xml:space="preserve">rcu_implicit_dynticks_qs()</text>
xml:space="preserve">rcu_watching_snap_recheck()</text>
<text
xml:space="preserve"
x="14659.87"

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Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp.svg
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@ -3029,7 +3029,7 @@
font-style="normal"
y="38425.035"
x="-337.79462"
xml:space="preserve">rcu_implicit_dynticks_qs()</text>
xml:space="preserve">rcu_watching_snap_recheck()</text>
<text
xml:space="preserve"
x="9907.8887"

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Documentation/RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg
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@ -525,7 +525,7 @@
font-style="normal"
y="-8368.1475"
x="2463.3262"
xml:space="preserve">rcu_implicit_dynticks_qs()</text>
xml:space="preserve">rcu_watching_snap_recheck()</text>
<text
sodipodi:linespacing="125%"
style="font-size:192px;font-style:normal;font-weight:bold;line-height:125%;text-anchor:start;fill:#000000;stroke-width:0.025in;font-family:Courier"

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4
kernel/rcu/tree.c
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@ -812,7 +812,7 @@ static int rcu_watching_snap_save(struct rcu_data *rdp)
*
* Returns zero otherwise.
*/
static int rcu_implicit_dynticks_qs(struct rcu_data *rdp)
static int rcu_watching_snap_recheck(struct rcu_data *rdp)
{
unsigned long jtsq;
int ret = 0;
@ -1998,7 +1998,7 @@ static void rcu_gp_fqs(bool first_time)
force_qs_rnp(rcu_watching_snap_save);
} else {
/* Handle dyntick-idle and offline CPUs. */
force_qs_rnp(rcu_implicit_dynticks_qs);
force_qs_rnp(rcu_watching_snap_recheck);
}
/* Clear flag to prevent immediate re-entry. */
if (READ_ONCE(rcu_state.gp_flags) & RCU_GP_FLAG_FQS) {