ANDROID: GKI: remove export of tracing control functions

gregkh · gregkh · commit 9bb473b373ad · 2024-08-11T14:16:31.000Z
Android GKI kernel modules should NOT have the ability to control the
system-wide tracing functionality, nor query to determine if it is on or
not.  So remove the exports of these functions.

Upstream does not wish to do this, so an Android-only change is
required.  See the bug id for details.

Bug: 355584612
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@google.com&gt;
Change-Id: I50f69cd9930ddc6b876c5c1dd86f51cfb2ee1bac
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
@@ -1039,7 +1039,6 @@ void tracing_on(void)
 {
 	tracer_tracing_on(&global_trace);
 }
-EXPORT_SYMBOL_GPL(tracing_on);
 
 
 static __always_inline void
@@ -1612,7 +1611,6 @@ int tracing_is_on(void)
 {
 	return tracer_tracing_is_on(&global_trace);
 }
-EXPORT_SYMBOL_GPL(tracing_is_on);
 
 static int __init set_buf_size(char *str)
 {

Original file line number	Diff line number	Diff line change
`@@ -1039,7 +1039,6 @@ void tracing_on(void)`
`1039`	`1039`	`{`
`1040`	`1040`	`tracer_tracing_on(&global_trace);`
`1041`	`1041`	`}`
`1042`		`-EXPORT_SYMBOL_GPL(tracing_on);`
`1043`	`1042`
`1044`	`1043`
`1045`	`1044`	`static __always_inline void`
`@@ -1612,7 +1611,6 @@ int tracing_is_on(void)`
`1612`	`1611`	`{`
`1613`	`1612`	`return tracer_tracing_is_on(&global_trace);`
`1614`	`1613`	`}`
`1615`		`-EXPORT_SYMBOL_GPL(tracing_is_on);`
`1616`	`1614`
`1617`	`1615`	`static int __init set_buf_size(char *str)`
`1618`	`1616`	`{`