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authorValentin Schneider <vschneid@redhat.com>2024-04-29 16:41:37 +0200
committerNeeraj Upadhyay <neeraj.upadhyay@kernel.org>2024-08-15 21:30:42 +0530
commit3b18eb3f9f9e287214c3b99a4d02dcef264841ee (patch)
tree72b6244c6ce29912c6fcf14947d036b3a161e900
parent49f82c64fdc66447d839e77d2bd1c5b5b797590c (diff)
downloadlwn-3b18eb3f9f9e287214c3b99a4d02dcef264841ee.tar.gz
lwn-3b18eb3f9f9e287214c3b99a4d02dcef264841ee.zip
rcu: Rename rcu_implicit_dynticks_qs() into rcu_watching_snap_recheck()
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>
-rw-r--r--Documentation/RCU/Design/Memory-Ordering/TreeRCU-dyntick.svg2
-rw-r--r--Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-fqs.svg2
-rw-r--r--Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp.svg2
-rw-r--r--Documentation/RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg2
-rw-r--r--kernel/rcu/tree.c4
5 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/RCU/Design/Memory-Ordering/TreeRCU-dyntick.svg b/Documentation/RCU/Design/Memory-Ordering/TreeRCU-dyntick.svg
index 13956baf748a..ab9707f04e66 100644
--- a/Documentation/RCU/Design/Memory-Ordering/TreeRCU-dyntick.svg
+++ b/Documentation/RCU/Design/Memory-Ordering/TreeRCU-dyntick.svg
@@ -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"
diff --git a/Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-fqs.svg b/Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-fqs.svg
index 9de55fbf5be4..e17c3356041a 100644
--- a/Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-fqs.svg
+++ b/Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp-fqs.svg
@@ -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"
diff --git a/Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp.svg b/Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp.svg
index 286a098b9c42..c43e1ec10774 100644
--- a/Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp.svg
+++ b/Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp.svg
@@ -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"
diff --git a/Documentation/RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg b/Documentation/RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg
index bab69a15c9c2..a92356ce4011 100644
--- a/Documentation/RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg
+++ b/Documentation/RCU/Design/Memory-Ordering/TreeRCU-hotplug.svg
@@ -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"
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 93039414733a..b53b354417ae 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -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) {