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tracing: Make ftrace_print_array_seq compute buf_len

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The only caller to this function (__print_array) was getting it wrong by
passing the array length instead of buffer length. As the element size
was already being passed for other reasons it seems reasonable to push
the calculation of buffer length into the function.

Link: http://lkml.kernel.org/r/1430320727-14582-1-git-send-email-alex.bennee@linaro.org

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Alex Bennée 2015-04-29 16:18:46 +01:00 committed by Steven Rostedt
parent 5ebe6afaf0
commit ac01ce1410
2 changed files with 3 additions and 2 deletions
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2
include/linux/ftrace_event.h
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@ -46,7 +46,7 @@ const char *ftrace_print_hex_seq(struct trace_seq *p,
const unsigned char *buf, int len);
const char *ftrace_print_array_seq(struct trace_seq *p,
const void *buf, int buf_len,
const void *buf, int count,
size_t el_size);
struct trace_iterator;

3
kernel/trace/trace_output.c
View file

@ -178,12 +178,13 @@ ftrace_print_hex_seq(struct trace_seq *p, const unsigned char *buf, int buf_len)
EXPORT_SYMBOL(ftrace_print_hex_seq);
const char *
ftrace_print_array_seq(struct trace_seq *p, const void *buf, int buf_len,
ftrace_print_array_seq(struct trace_seq *p, const void *buf, int count,
size_t el_size)
{
const char *ret = trace_seq_buffer_ptr(p);
const char *prefix = "";
void *ptr = (void *)buf;
size_t buf_len = count * el_size;
trace_seq_putc(p, '{');