ANDROID: vendor_hooks:add restricted hook for logbuf

Fix the timestamp in front of the log is out of order when
using android_vh_logbuf with CPU core is offline.

Bug: 364443023
Change-Id: Ib37f4373d3511aaf765838bf581c84ed22992a77
Signed-off-by: Xandy.Xiong <xiongliang@xiaomi.com>
(cherry picked from commit 9b44f2fb794ccd5a17777e317bec959558d21f9e)

drivers/android/vendor_hooks.c

@@ -352,6 +352,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_futex_wake_this);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_futex_wake_up_q_finish);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_report_bug);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_logbuf);
+EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_logbuf);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_cpufreq_acct_update_power);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_tune_swappiness);
 EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_logbuf_pr_cont);

include/trace/hooks/logbuf.h

@@ -12,6 +12,10 @@
 struct printk_ringbuffer;
 struct printk_record;
 
+DECLARE_RESTRICTED_HOOK(android_rvh_logbuf,
+	TP_PROTO(struct printk_ringbuffer *rb, struct printk_record *r),
+	TP_ARGS(rb, r), true)
+
 DECLARE_HOOK(android_vh_logbuf,
 	TP_PROTO(struct printk_ringbuffer *rb, struct printk_record *r),
 	TP_ARGS(rb, r))

kernel/printk/printk.c

@@ -2361,6 +2361,7 @@ int vprintk_store(int facility, int level,
 	else
 		prb_final_commit(&e);
 
+	trace_android_rvh_logbuf(prb, &r);
 	trace_android_vh_logbuf(prb, &r);
 	ret = text_len + trunc_msg_len;
 out: