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675b4e24bc
linux/tools/testing/selftests
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Jose E. Marchesi 675b4e24bc bpf: Temporarily define BPF_NO_PRESEVE_ACCESS_INDEX for GCC 
The vmlinux.h file generated by bpftool makes use of compiler pragmas
in order to install the CO-RE preserve_access_index in all the struct
types derived from the BTF info:

  #ifndef __VMLINUX_H__
  #define __VMLINUX_H__

  #ifndef BPF_NO_PRESERVE_ACCESS_INDEX
  #pragma clang attribute push (__attribute__((preserve_access_index)), apply_t = record
  #endif

  [... type definitions generated from kernel BTF ... ]

  #ifndef BPF_NO_PRESERVE_ACCESS_INDEX
  #pragma clang attribute pop
  #endif

The `clang attribute push/pop' pragmas are specific to clang/llvm and
are not supported by GCC.

At the moment the BTF dumping services in libbpf do not support
dicriminating between types dumped because they are directly referred
and types dumped because they are dependencies.  A suitable API is
being worked now. See [1] and [2].

In the interim, this patch changes the selftests/bpf Makefile so it
passes -DBPF_NO_PRESERVE_ACCESS_INDEX to GCC when it builds the
selftests.  This workaround is temporary, and may have an impact on
the results of the GCC-built tests.

[1] https://lore.kernel.org/bpf/20240503111836.25275-1-jose.marchesi@oracle.com/T/#u
[2] https://lore.kernel.org/bpf/20240504205510.24785-1-jose.marchesi@oracle.com/T/#u

Tested in bpf-next master.
No regressions.

Signed-off-by: Jose E. Marchesi <jose.marchesi@oracle.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240507095011.15867-1-jose.marchesi@oracle.com
2024-05-07 14:40:00 -07:00
..
alsa selftests: avoid using SKIP(exit()) in harness fixure setup 2024-03-05 19:25:36 -08:00
amd-pstate selftests/amd-pstate: Added option to provide perf binary path 2023-10-16 13:06:58 -06:00
arm64 Merge branches 'for-next/reorg-va-space', 'for-next/rust-for-arm64', 'for-next/misc', 'for-next/daif-cleanup', 'for-next/kselftest', 'for-next/documentation', 'for-next/sysreg' and 'for-next/dpisa', remote-tracking branch 'arm64/for-next/perf' into for-next/core 2024-03-07 19:04:55 +00:00
bpf bpf: Temporarily define BPF_NO_PRESEVE_ACCESS_INDEX for GCC 2024-05-07 14:40:00 -07:00
breakpoints selftests/breakpoints: Fix format specifier in ksft_print_msg in step_after_suspend_test.c 2023-11-30 14:32:34 -07:00
cachestat selftests/cachestat: Fix print_cachestat format 2023-10-13 14:08:10 -06:00
capabilities selftests: capabilities: namespace create varies for root and normal user 2023-11-30 16:37:30 -07:00
cgroup selftests: add zswapin and no zswap tests 2024-02-22 15:27:16 -08:00
clone3 Many singleton patches against the MM code. The patch series which are 2023-11-02 19:38:47 -10:00
connector
core selftests: core: include linux/close_range.h for CLOSE_RANGE_* macros 2024-02-07 21:20:34 -08:00
cpu-hotplug
cpufreq
damon selftests: damon: add access_memory to .gitignore 2024-03-04 17:01:16 -08:00
devices kselftest: devices: Add sample board file for XPS 13 9300 2024-01-27 17:38:53 -08:00
dma
dmabuf-heaps selftests: dmabuf-heap: add config file for the test 2024-03-29 13:57:14 -06:00
drivers selftests: drv-net: validate the environment 2024-04-26 16:10:26 -07:00
dt linux_kselftest-next-6.9-rc1 2024-03-11 09:25:33 -07:00
efivarfs selftests/efivarfs: create-read: fix a resource leak 2023-10-18 14:33:44 -06:00
exec selftests/exec: Convert remaining /bin/sh to /bin/bash 2024-03-18 11:19:37 -07:00
fchmodat2
filelock
filesystems - Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min 2024-03-14 18:03:09 -07:00
firmware selftests: firmware: remove duplicate unneeded defines 2023-10-06 17:33:52 -06:00
fpu
ftrace selftests/ftrace: Limit length in subsystem-enable tests 2024-04-04 10:29:10 -06:00
futex selftests: fuxex: Report a unique test name per run of futex_requeue_pi 2024-02-19 15:00:51 -07:00
gpio selftest: gpio: remove obsolete gpio-mockup test 2024-03-05 20:01:08 +01:00
hid selftests/hid: wacom: fix confidence tests 2024-01-18 09:15:38 +01:00
ia64
intel_pstate
iommu iommufd: Add config needed for iommufd_fail_nth 2024-04-14 13:52:08 -03:00
ipc
ir
kcmp
kexec
kmod
kselftest selftests: ktap_helpers: Add a helper to finish the test 2024-02-20 15:53:20 -07:00
kvm KVM: selftests: Add coverage of EPT-disabled to vmx_dirty_log_test 2024-04-11 12:58:52 -07:00
landlock Landlock updates for v6.9-rc1 2024-03-14 16:00:27 -07:00
lib
livepatch linux_kselftest-next-6.9-rc1 2024-03-11 09:25:33 -07:00
lkdtm
locking
lsm lsm: use 32-bit compatible data types in LSM syscalls 2024-03-14 11:31:26 -04:00
media_tests
membarrier
memfd selftests/memfd: delete unused declarations 2024-02-22 10:24:38 -08:00
memory-hotplug
mincore
mm selftests/mm: include strings.h for ffsl 2024-04-05 11:21:30 -07:00
mount
mount_setattr
move_mount_set_group selftests/move_mount_set_group:Make tests build with old libc 2024-01-22 15:33:37 +01:00
mqueue selftests/mqueue: Set timeout to 180 seconds 2024-02-20 17:28:19 -07:00
nci
net selftests: forwarding: add wait_for_dev() helper 2024-04-26 13:26:53 +02:00
nolibc selftests/nolibc: disable coredump via setrlimit 2023-12-11 22:38:37 +01:00
nsfs
ntb
openat2 linux_kselftest-next-6.7-rc1 2023-11-01 17:08:10 -10:00
perf_events
pid_namespace
pidfd selftests: add ESRCH tests for pidfd_getfd() 2024-02-07 15:48:31 +01:00
power_supply selftests: Add test to verify power supply properties 2024-02-20 15:53:33 -07:00
powerpc selftests/powerpc/papr-vpd: Fix missing variable initialization 2024-04-12 14:40:07 +10:00
prctl selftests: prctl: Add prctl test for PR_GET_NAME 2023-11-30 16:30:05 -07:00
proc proc: test ProtectionKey in proc-empty-vm test 2023-11-01 12:46:59 -07:00
pstore
ptp ptp: add testptp mask test 2023-10-15 20:07:52 +01:00
ptrace
rcutorture clocksource: Scale the watchdog read retries automatically 2024-02-21 12:00:42 +01:00
resctrl selftests/resctrl: Add non-contiguous CBMs CAT test 2024-02-23 15:19:25 -07:00
riscv Merge patch series "riscv: mm: Extend mappable memory up to hint address" 2024-03-15 10:17:34 -07:00
rlimits
rseq selftests/rseq: Do not skip !allowed_cpus for mm_cid 2024-01-22 11:40:36 -07:00
rtc
rust kselftest: Add basic test for probing the rust sample modules 2024-03-04 13:13:04 -07:00
safesetid
sched selftests: sched: Fix spelling mistake "hiearchy" -> "hierarchy" 2024-02-20 17:28:19 -07:00
seccomp selftests/seccomp: Try to fit runtime of benchmark into timeout 2024-03-29 13:57:14 -06:00
sgx selftests/sgx: Skip non X86_64 platform 2023-12-08 10:08:17 -08:00
sigaltstack selftests/sigaltstack: Fix wrong format specifier 2023-10-13 14:08:26 -06:00
size
sparc64
splice
static_keys selftests: static_keys: fix test name in messages 2023-10-05 14:28:59 -06:00
sync
syscall_user_dispatch
sysctl sysclt: Clarify the results of selftest run 2023-12-28 04:57:57 -08:00
tc-testing selftests/tc-testing: require an up to date iproute2 for blockcast tests 2024-03-04 19:30:57 -08:00
tdx selftests/tdx: add gitignore file 2023-10-05 14:22:53 -06:00
thermal/intel selftests: thermal: intel: workload_hint: add missing gitignore 2024-02-20 16:30:55 -07:00
timens
timers selftests: timers: Fix abs() warning in posix_timers test 2024-04-12 14:11:15 +02:00
tmpfs
tpm2
tty
turbostat tools/power turbostat: v2024.04.10 2024-04-10 09:07:57 -04:00
uevent selftests: uevent: add missing gitignore 2024-02-20 16:30:40 -07:00
user
user_events selftests/user_events: Test multi-format events 2024-03-18 10:13:12 -04:00
vDSO kselftest/vDSO: Use ksft_print_msg() rather than printf in vdso_test_abi 2023-11-30 14:50:09 -07:00
watchdog
wireguard wireguard: selftests: set RISCV_ISA_FALLBACK on riscv{32,64} 2024-03-19 11:22:50 +01:00
x86 selftests:x86: Fix Format String Warnings in lam.c 2023-11-30 14:32:41 -07:00
zram
.gitignore
gen_kselftest_tar.sh
kselftest_deps.sh
kselftest_harness.h A little calmer than usual, probably just the timing of sub-tree PRs. 2024-04-18 11:40:54 -07:00
kselftest_install.sh
kselftest_module.h
kselftest.h A little calmer than usual, probably just the timing of sub-tree PRs. 2024-04-18 11:40:54 -07:00
lib.mk selftests: adopt BPF's approach to quieter builds 2024-04-17 18:18:39 -07:00
Makefile selftests: virtio_net: add initial tests 2024-04-26 13:26:53 +02:00
run_kselftest.sh kselftest/runner.sh: add netns support 2023-12-23 00:26:32 +00:00