linux-kernel - [for-next][PATCH 17/20] ftrace: Remove obsoleted code from ftrace and task

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Date:   Tue, 27 Sep 2022 12:02:33 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     linux-kernel@...r.kernel.org
Cc:     Daniel Bristot de Oliveira <bristot@...nel.org>,
        Gaosheng Cui <cuigaosheng1@...wei.com>
Subject: [for-next][PATCH 17/20] ftrace: Remove obsoleted code from ftrace and task_struct

From: Gaosheng Cui <cuigaosheng1@...wei.com>

The trace of "struct task_struct" was no longer used since
commit 345ddcc882d8 ("ftrace: Have set_ftrace_pid use the
bitmap like events do"), and the functions about flags for
current->trace is useless, so remove them.

Link: https://lkml.kernel.org/r/20220923090012.505990-1-cuigaosheng1@huawei.com

Signed-off-by: Gaosheng Cui <cuigaosheng1@...wei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 include/linux/ftrace.h | 41 -----------------------------------------
 include/linux/sched.h  |  3 ---
 2 files changed, 44 deletions(-)

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 0b61371e287b..62557d4bffc2 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -1122,47 +1122,6 @@ static inline void unpause_graph_tracing(void) { }
 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
 
 #ifdef CONFIG_TRACING
-
-/* flags for current->trace */
-enum {
-	TSK_TRACE_FL_TRACE_BIT	= 0,
-	TSK_TRACE_FL_GRAPH_BIT	= 1,
-};
-enum {
-	TSK_TRACE_FL_TRACE	= 1 << TSK_TRACE_FL_TRACE_BIT,
-	TSK_TRACE_FL_GRAPH	= 1 << TSK_TRACE_FL_GRAPH_BIT,
-};
-
-static inline void set_tsk_trace_trace(struct task_struct *tsk)
-{
-	set_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace);
-}
-
-static inline void clear_tsk_trace_trace(struct task_struct *tsk)
-{
-	clear_bit(TSK_TRACE_FL_TRACE_BIT, &tsk->trace);
-}
-
-static inline int test_tsk_trace_trace(struct task_struct *tsk)
-{
-	return tsk->trace & TSK_TRACE_FL_TRACE;
-}
-
-static inline void set_tsk_trace_graph(struct task_struct *tsk)
-{
-	set_bit(TSK_TRACE_FL_GRAPH_BIT, &tsk->trace);
-}
-
-static inline void clear_tsk_trace_graph(struct task_struct *tsk)
-{
-	clear_bit(TSK_TRACE_FL_GRAPH_BIT, &tsk->trace);
-}
-
-static inline int test_tsk_trace_graph(struct task_struct *tsk)
-{
-	return tsk->trace & TSK_TRACE_FL_GRAPH;
-}
-
 enum ftrace_dump_mode;
 
 extern enum ftrace_dump_mode ftrace_dump_on_oops;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index e7b2f8a5c711..c7ee04e9147a 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1381,9 +1381,6 @@ struct task_struct {
 #endif
 
 #ifdef CONFIG_TRACING
-	/* State flags for use by tracers: */
-	unsigned long			trace;
-
 	/* Bitmask and counter of trace recursion: */
 	unsigned long			trace_recursion;
 #endif /* CONFIG_TRACING */
-- 
2.35.1