seq_buf_buffer_left
if (seq_buf_buffer_left(s))
if (WARN_ON_ONCE(!seq_buf_buffer_left(&s)))
if (WARN_ON_ONCE(!seq_buf_buffer_left(&s)))
#define TRACE_SEQ_BUF_LEFT(s) seq_buf_buffer_left(&(s)->seq)
if (!WARN_ON_ONCE(seq_buf_buffer_left(&s->seq) < len))
unsigned int len = seq_buf_buffer_left(s);
KUNIT_EXPECT_EQ(test, seq_buf_buffer_left(&s), 32);
KUNIT_EXPECT_EQ(test, seq_buf_buffer_left(&s), 24);