Changeset efed95a3 in mainline for kernel/generic/src/sysinfo/stats.c

Timestamp:

2024-01-20T17:09:00Z (4 months ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Branches:

master

Children:

3d84734

Parents:

286da52

git-author:

Jiří Zárevúcky <zarevucky.jiri@…> (2024-01-20 16:12:46)

git-committer:

Jiří Zárevúcky <zarevucky.jiri@…> (2024-01-20 17:09:00)

Message:

Make thread→cpu weakly atomic, to avoid need for thread lock

File:

• kernel/generic/src/sysinfo/stats.c (modified) (1 diff)

kernel/generic/src/sysinfo/stats.c

@@ -308 +308 @@
         stats_thread->kcycles = thread->kcycles;
 
-        if (thread->cpu != NULL) {
+        cpu_t *cpu = atomic_get_unordered(&thread->cpu);
+
+        if (cpu != NULL) {
                 stats_thread->on_cpu = true;
-                stats_thread->cpu = thread->cpu->id;
+                stats_thread->cpu = cpu->id;
         } else
                 stats_thread->on_cpu = false;