ANDROID: vendor_hooks: add hook in create_worker()

This hook is used to apply specific scheduling policies to worker->task

Bug: 360039558
Bug: 408116496

Change-Id: I4fb79b23bced1c58a6fa5f4d0c19850f11d56e0f
Signed-off-by: Yang Yang <yang.yang@vivo.com>
(cherry picked from commit 2041959e88de73c2487def20a89c60a7f8177938)
Signed-off-by: ying zuxin <11154159@vivo.com>

drivers/android/vendor_hooks.c

@@ -102,6 +102,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpu_idle_exit);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mpam_set);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_wq_lockup_pool);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_alloc_and_link_pwqs);
+EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_create_worker);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_ipi_stop);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_sysrq_crash);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_printk_hotplug);

include/trace/hooks/wqlockup.h

@@ -10,6 +10,10 @@
  * Following tracepoints are not exported in tracefs and provide a
  * mechanism for vendor modules to hook and extend functionality
  */
+DECLARE_RESTRICTED_HOOK(android_rvh_create_worker,
+	TP_PROTO(struct task_struct *p, struct workqueue_attrs *attrs),
+	TP_ARGS(p, attrs), 1);
+
 DECLARE_HOOK(android_vh_wq_lockup_pool,
 	TP_PROTO(int cpu, unsigned long pool_ts),
 	TP_ARGS(cpu, pool_ts));

kernel/workqueue.c

@@ -2812,6 +2812,7 @@ static struct worker *create_worker(struct worker_pool *pool)
 		}
 
 		set_user_nice(worker->task, pool->attrs->nice);
+		trace_android_rvh_create_worker(worker->task, pool->attrs);
 		kthread_bind_mask(worker->task, pool_allowed_cpus(pool));
 	}