[for-next][PATCH 11/21] tracing: Remove trace_seq_reserve()

[Steven Rostedt]

From: "Steven Rostedt (Red Hat)" <rostedt@xxxxxxxxxxx>

trace_seq_reserve() has no users in the kernel, it just wastes space.
Remove it.

Cc: Eduard - Gabriel Munteanu <eduard.munteanu@xxxxxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
 include/linux/trace_seq.h |  5 -----
 kernel/trace/trace_seq.c  | 30 ------------------------------
 2 files changed, 35 deletions(-)

diff --git a/include/linux/trace_seq.h b/include/linux/trace_seq.h
index 8283762ab7ef..dd85753e1bb0 100644
--- a/include/linux/trace_seq.h
+++ b/include/linux/trace_seq.h
@@ -43,7 +43,6 @@ extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
 extern int trace_seq_putmem(struct trace_seq *s, const void *mem, unsigned int len);
 extern int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
 				unsigned int len);
-extern void *trace_seq_reserve(struct trace_seq *s, unsigned int len);
 extern int trace_seq_path(struct trace_seq *s, const struct path *path);
 
 extern int trace_seq_bitmask(struct trace_seq *s, const unsigned long *maskp,
@@ -94,10 +93,6 @@ static inline int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
 {
 	return 0;
 }
-static inline void *trace_seq_reserve(struct trace_seq *s, unsigned int len)
-{
-	return NULL;
-}
 static inline int trace_seq_path(struct trace_seq *s, const struct path *path)
 {
 	return 0;
diff --git a/kernel/trace/trace_seq.c b/kernel/trace/trace_seq.c
index 88c0f80f0a1f..1f24ed99dca2 100644
--- a/kernel/trace/trace_seq.c
+++ b/kernel/trace/trace_seq.c
@@ -342,36 +342,6 @@ int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
 EXPORT_SYMBOL_GPL(trace_seq_putmem_hex);
 
 /**
- * trace_seq_reserve - reserve space on the sequence buffer
- * @s: trace sequence descriptor
- * @len: The amount to reserver.
- *
- * If for some reason there is a need to save some space on the
- * buffer to fill in later, this function is used for that purpose.
- * The given length will be reserved and the pointer to that
- * location on the buffer is returned, unless there is not enough
- * buffer left to hold the given length then NULL is returned.
- */
-void *trace_seq_reserve(struct trace_seq *s, unsigned int len)
-{
-	void *ret;
-
-	if (s->full)
-		return NULL;
-
-	if (len > TRACE_SEQ_BUF_LEFT(s)) {
-		s->full = 1;
-		return NULL;
-	}
-
-	ret = s->buffer + s->len;
-	s->len += len;
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(trace_seq_reserve);
-
-/**
  * trace_seq_path - copy a path into the sequence buffer
  * @s: trace sequence descriptor
  * @path: path to write into the sequence buffer.
-- 
2.0.0


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