From: Steven Rostedt After the filtered functions are read, the probed functions are read from the hash in set_ftrace_filter. When the hashed probed functions are read, the *pos passed in is reset. Instead of modifying the pos given to the read function, just record the pos where the filtered functions ended and subtract from that. Signed-off-by: Steven Rostedt --- kernel/trace/ftrace.c | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index fa7ece6..585ea27 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1368,6 +1368,7 @@ enum { #define FTRACE_BUFF_MAX (KSYM_SYMBOL_LEN+4) /* room for wildcards */ struct ftrace_iterator { + loff_t func_pos; struct ftrace_page *pg; int hidx; int idx; @@ -1418,12 +1419,15 @@ static void *t_hash_start(struct seq_file *m, loff_t *pos) loff_t l; if (!(iter->flags & FTRACE_ITER_HASH)) - *pos = 0; + iter->func_pos = *pos; + + if (iter->func_pos > *pos) + return NULL; iter->flags |= FTRACE_ITER_HASH; iter->hidx = 0; - for (l = 0; l <= *pos; ) { + for (l = 0; l <= (*pos - iter->func_pos); ) { p = t_hash_next(m, p, &l); if (!p) break; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/