Yonghong Song 35697c12d7 selftests/bpf: Fix test_progs send_signal flakiness with nmi mode ... Alexei observed that test_progs send_signal may fail if run with command line "./test_progs" and the tests will pass if just run "./test_progs -n 40". I observed similar issue with nmi subtest failure and added a delay 100 us in Commit ab8b7f0cb3 ("tools/bpf: Add self tests for bpf_send_signal_thread()") and the problem is gone for me. But the issue still exists in Alexei's testing environment. The current code uses sample_freq = 50 (50 events/second), which may not be enough. But if the sample_freq value is larger than sysctl kernel/perf_event_max_sample_rate, the perf_event_open syscall will fail. This patch changed nmi perf testing to use sample_period = 1, which means trying to sampling every event. This seems fixing the issue. Fixes: ab8b7f0cb3 ("tools/bpf: Add self tests for bpf_send_signal_thread()") Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200116174004.1522812-1-yhs@fb.com		2020-01-16 13:28:57 -08:00
..
accounting
arch	tools arch x86: Sync asm/cpufeatures.h with the kernel sources	2019-12-02 15:20:05 -03:00
bpf	bpftool: Support dumping a map with btf_vmlinux_value_type_id	2020-01-15 15:23:27 -08:00
build	perf tools: Allow to link with libbpf dynamicaly	2019-11-26 11:17:45 -03:00
cgroup
debugging
firewire
firmware
gpio	tools: gpio: Correctly add make dependencies for gpio_utils	2019-11-13 13:46:04 +01:00
hv	tools: hv: add vmbus testing tool	2019-11-21 20:10:44 -05:00
iio	tools: iio: Correctly add make dependency for iio_utils	2019-11-10 17:11:06 +00:00
include	tools/bpf: Sync uapi header bpf.h	2020-01-15 14:00:35 -08:00
io_uring
kvm/kvm_stat
laptop
leds
lib	libbpf: Fix unneeded extra initialization in bpf_map_batch_common	2020-01-16 15:31:52 +01:00
memory-model	tools/memory-model/Documentation: Add plain accesses and data races to explanation.txt	2019-10-05 11:59:44 -07:00
nfsd
objtool	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-11-26 15:04:47 -08:00
pci	tools: PCI: Fix fd leakage	2019-10-29 12:04:18 +00:00
pcmcia
perf	perf vendor events s390: Remove name from L1D_RO_EXCL_WRITES description	2019-12-16 13:40:26 -03:00
power	platform-drivers-x86 for v5.5-1	2019-12-01 18:24:25 -08:00
scripts
spi
testing	selftests/bpf: Fix test_progs send_signal flakiness with nmi mode	2020-01-16 13:28:57 -08:00
thermal/tmon
time
usb	usbip: tools: fix fd leakage in the function of read_attr_usbip_status	2019-11-07 11:25:01 +01:00
virtio	tools/virtio: xen stub	2019-10-13 09:38:27 -04:00
vm
wmi
Makefile