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tracing: Remove trace_seq_reserve()

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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: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2014-06-23 16:42:07 -04:00 committed by Steven Rostedt
parent 6d2289f3fa
commit 9096032fbc
2 changed files with 0 additions and 35 deletions
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5
include/linux/trace_seq.h
View File

@ -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;

30
kernel/trace/trace_seq.c
View File

@ -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