samples/bpf: remove obsolete tracing related tests

The samples/bpf has become outdated and often does not follow up with
the latest. This commit removes obsolete tracing-related tests.

Specifically, 'test_overhead' is duplicate with selftests (and bench),
and 'test_override_return', 'test_probe_write_user' tests are obsolete
since they have been replaced by kprobe_multi_override and probe_user
from selftests respectively.

The following files are removed:
- test_overhead: tests the overhead of BPF programs with task_rename,
  now covered by selftests and benchmark tests (rename-*). [1]

- test_override_return: tests the return override functionality, now
  handled by kprobe_multi_override in selftests.

- test_probe_write_user: tests the probe_write_user functionality,
  now replaced by the probe_user test in selftests.

This cleanup will help to streamline the testing framework by removing
redundant tests.

[1]: https://patchwork.kernel.org/cover/13759916

Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Link: https://lore.kernel.org/r/20241011044847.51584-5-danieltimlee@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 0 insertions, 11 deletions

diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index e2abfc847389..bcf103a4c14f 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -17,14 +17,11 @@ tprogs-y += tracex3
 tprogs-y += tracex4
 tprogs-y += tracex5
 tprogs-y += tracex6
-tprogs-y += tracex7
-tprogs-y += test_probe_write_user
 tprogs-y += trace_output
 tprogs-y += lathist
 tprogs-y += offwaketime
 tprogs-y += spintest
 tprogs-y += map_perf_test
-tprogs-y += test_overhead
 tprogs-y += xdp_router_ipv4
 tprogs-y += trace_event
 tprogs-y += sampleip
@@ -61,8 +58,6 @@ tracex3-objs := tracex3_user.o
 tracex4-objs := tracex4_user.o
 tracex5-objs := tracex5_user.o $(TRACE_HELPERS)
 tracex6-objs := tracex6_user.o
-tracex7-objs := tracex7_user.o
-test_probe_write_user-objs := test_probe_write_user_user.o
 trace_output-objs := trace_output_user.o
 lathist-objs := lathist_user.o
 offwaketime-objs := offwaketime_user.o $(TRACE_HELPERS)
@@ -96,8 +91,6 @@ always-y += tracex3.bpf.o
 always-y += tracex4.bpf.o
 always-y += tracex5.bpf.o
 always-y += tracex6.bpf.o
-always-y += tracex7.bpf.o
-always-y += test_probe_write_user.bpf.o
 always-y += trace_output.bpf.o
 always-y += tcbpf1_kern.o
 always-y += tc_l2_redirect_kern.o
@@ -105,9 +98,6 @@ always-y += lathist_kern.o
 always-y += offwaketime.bpf.o
 always-y += spintest.bpf.o
 always-y += map_perf_test.bpf.o
-always-y += test_overhead_tp.bpf.o
-always-y += test_overhead_raw_tp.bpf.o
-always-y += test_overhead_kprobe.bpf.o
 always-y += parse_varlen.o parse_simple.o parse_ldabs.o
 always-y += trace_event_kern.o
 always-y += sampleip_kern.o
@@ -181,7 +171,6 @@ TPROGLDLIBS_xdp_router_ipv4	+= -lm -pthread
 TPROGLDLIBS_tracex4		+= -lrt
 TPROGLDLIBS_trace_output	+= -lrt
 TPROGLDLIBS_map_perf_test	+= -lrt
-TPROGLDLIBS_test_overhead	+= -lrt
 
 # Allows pointing LLC/CLANG to a LLVM backend with bpf support, redefine on cmdline:
 # make M=samples/bpf LLC=~/git/llvm-project/llvm/build/bin/llc CLANG=~/git/llvm-project/llvm/build/bin/clang