From: Achilles <49805408+achilles-git@users.noreply.github.com>
Date: Thu, 23 Dec 2021 18:59:59 +0000 (+0530)
Subject: exclude static functions with prefix __SCT__ (#3772)
X-Git-Tag: v0.24.0~29
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3e8eb8b62f6e92aef332b2eab48305220705dfae;p=platform%2Fupstream%2Fbcc.git

exclude static functions with prefix __SCT__ (#3772)

The kernel functions with prefix __SCT__ are for static calls. These static call functions are not in
/sys/kernel/debug/tracing/available_filter_functions and not in /sys/kernel/debug/kprobes/blacklist
either. Let us do filtering in get_kprobe_functions() to filter them out.

Co-authored-by: prameet.p <prameet.p@inba-prameet.p-210508>
---

diff --git a/src/python/bcc/__init__.py b/src/python/bcc/__init__.py
index ceb28841..2ff5cf02 100644
--- a/src/python/bcc/__init__.py
+++ b/src/python/bcc/__init__.py
@@ -737,6 +737,10 @@ class BPF(object):
                 # non-attachable.
                 elif fn.startswith(b'__perf') or fn.startswith(b'perf_'):
                     continue
+                # Exclude all static functions with prefix __SCT__, they are
+                # all non-attachable
+                elif fn.startswith(b'__SCT__'):
+                    continue
                 # Exclude all gcc 8's extra .cold functions
                 elif re.match(b'^.*\.cold(\.\d+)?$', fn):
                     continue