From aeb709c767aeca996e6011133e4f7bdb2a4af652 Mon Sep 17 00:00:00 2001
From: Alexei Starovoitov <ast@kernel.org>
Date: Wed, 30 Sep 2026 09:59:20 +0000
Subject: selftests/bpf: Add a test for objects stuck in free_by_rcu_ttrace

Delete all elements of BPF_F_NO_PREALLOC hash map in one batch. The first
free_bulk() starts RCU tasks trace GP and the rest of the elements are
freed while it's in flight. Wait for call_rcu_ttrace_in_progress to clear
in bpf_mem_cache of every cpu and check that free_by_rcu_ttrace and
waiting_for_gp_ttrace lists are empty.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
---
 scripts/profile2linkerlist.pl | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 scripts/profile2linkerlist.pl

(limited to 'scripts/profile2linkerlist.pl')

diff --git a/scripts/profile2linkerlist.pl b/scripts/profile2linkerlist.pl
new file mode 100755
index 000000000..316e71918
--- /dev/null
+++ b/scripts/profile2linkerlist.pl
@@ -0,0 +1,20 @@
+#!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0
+
+#
+# Takes a (sorted) output of readprofile and turns it into a list suitable for
+# linker scripts
+#
+# usage:
+#	 readprofile | sort -rn | perl profile2linkerlist.pl > functionlist
+#
+use strict;
+
+while (<>) {
+  my $line = $_;
+
+  $_ =~ /\W*[0-9]+\W*([a-zA-Z\_0-9]+)\W*[0-9]+/;
+
+  print "*(.text.$1)\n"
+      unless ($line =~ /unknown/) || ($line =~ /total/);
+}
-- 
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