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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-08 16:58:07 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-08 16:58:07 +0000
commit5a6d13c86f2fe6304450e907fc1d8d72da82efef (patch)
tree1bd4e8854203c575eabaa99e2c509f8886065733 /tools/testing/selftests/bpf
parentAdding upstream version 6.1.76. (diff)
downloadlinux-5a6d13c86f2fe6304450e907fc1d8d72da82efef.tar.xz
linux-5a6d13c86f2fe6304450e907fc1d8d72da82efef.zip
Adding upstream version 6.1.82.upstream/6.1.82
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf')
-rw-r--r--tools/testing/selftests/bpf/cgroup_helpers.c18
-rw-r--r--tools/testing/selftests/bpf/prog_tests/btf.c1
-rw-r--r--tools/testing/selftests/bpf/progs/pyperf180.c22
3 files changed, 37 insertions, 4 deletions
diff --git a/tools/testing/selftests/bpf/cgroup_helpers.c b/tools/testing/selftests/bpf/cgroup_helpers.c
index e914cc45b..6f00bee91 100644
--- a/tools/testing/selftests/bpf/cgroup_helpers.c
+++ b/tools/testing/selftests/bpf/cgroup_helpers.c
@@ -467,10 +467,20 @@ int setup_classid_environment(void)
return 1;
}
- if (mount("net_cls", NETCLS_MOUNT_PATH, "cgroup", 0, "net_cls") &&
- errno != EBUSY) {
- log_err("mount cgroup net_cls");
- return 1;
+ if (mount("net_cls", NETCLS_MOUNT_PATH, "cgroup", 0, "net_cls")) {
+ if (errno != EBUSY) {
+ log_err("mount cgroup net_cls");
+ return 1;
+ }
+
+ if (rmdir(NETCLS_MOUNT_PATH)) {
+ log_err("rmdir cgroup net_cls");
+ return 1;
+ }
+ if (umount(CGROUP_MOUNT_DFLT)) {
+ log_err("umount cgroup base");
+ return 1;
+ }
}
cleanup_classid_environment();
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index d711f4bea..47cb753ef 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -5211,6 +5211,7 @@ static size_t get_pprint_mapv_size(enum pprint_mapv_kind_t mapv_kind)
#endif
assert(0);
+ return 0;
}
static void set_pprint_mapv(enum pprint_mapv_kind_t mapv_kind,
diff --git a/tools/testing/selftests/bpf/progs/pyperf180.c b/tools/testing/selftests/bpf/progs/pyperf180.c
index c39f559d3..42c4a8b62 100644
--- a/tools/testing/selftests/bpf/progs/pyperf180.c
+++ b/tools/testing/selftests/bpf/progs/pyperf180.c
@@ -1,4 +1,26 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
#define STACK_MAX_LEN 180
+
+/* llvm upstream commit at clang18
+ * https://github.com/llvm/llvm-project/commit/1a2e77cf9e11dbf56b5720c607313a566eebb16e
+ * changed inlining behavior and caused compilation failure as some branch
+ * target distance exceeded 16bit representation which is the maximum for
+ * cpu v1/v2/v3. Macro __BPF_CPU_VERSION__ is later implemented in clang18
+ * to specify which cpu version is used for compilation. So a smaller
+ * unroll_count can be set if __BPF_CPU_VERSION__ is less than 4, which
+ * reduced some branch target distances and resolved the compilation failure.
+ *
+ * To capture the case where a developer/ci uses clang18 but the corresponding
+ * repo checkpoint does not have __BPF_CPU_VERSION__, a smaller unroll_count
+ * will be set as well to prevent potential compilation failures.
+ */
+#ifdef __BPF_CPU_VERSION__
+#if __BPF_CPU_VERSION__ < 4
+#define UNROLL_COUNT 90
+#endif
+#elif __clang_major__ == 18
+#define UNROLL_COUNT 90
+#endif
+
#include "pyperf.h"