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Commit 9096032f authored by Steven Rostedt (Red Hat)'s avatar Steven Rostedt (Red Hat) Committed by Steven Rostedt
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tracing: Remove trace_seq_reserve() 



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

Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 6d2289f3

include/linux/trace_seq.h

+0 −5
Original line number Diff line number Diff line
@@ -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;

kernel/trace/trace_seq.c

+0 −30
Original line number Diff line number Diff line
@@ -341,36 +341,6 @@ 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