Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
25 lines
498 B
C
25 lines
498 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/bpf.h>
|
|
#include <bpf/bpf_helpers.h>
|
|
#include <bpf/bpf_tracing.h>
|
|
#include <stdbool.h>
|
|
|
|
#ifdef ENABLE_ATOMICS_TESTS
|
|
bool skip_tests __attribute((__section__(".data"))) = false;
|
|
#else
|
|
bool skip_tests = true;
|
|
#endif
|
|
|
|
SEC("fentry/bpf_fentry_test1")
|
|
int BPF_PROG(sub, int x)
|
|
{
|
|
#ifdef ENABLE_ATOMICS_TESTS
|
|
int a = 0;
|
|
int b = __sync_fetch_and_add(&a, 1);
|
|
/* b is certainly 0 here. Can the verifier tell? */
|
|
while (b)
|
|
continue;
|
|
#endif
|
|
return 0;
|
|
}
|