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selftests/bpf: update send_signal to lower perf evemts frequency 

Similar to commit [1] sample perf events less often in
test_send_signal_nmi(). This should reduce perf events throttling.

[1] 7015843afc ("selftests/bpf: Fix send_signal test with nested CONFIG_PARAVIRT")

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20241112110906.3045278-5-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Eduard Zingerman 2024-11-12 03:09:06 -08:00 committed by Alexei Starovoitov
parent 3209139d00
commit 4edab4c55d
1 changed files with 2 additions and 1 deletions
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3
tools/testing/selftests/bpf/prog_tests/send_signal.c
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@ -229,7 +229,8 @@ static void test_send_signal_perf(bool signal_thread, bool remote)
static void test_send_signal_nmi(bool signal_thread, bool remote)
{
struct perf_event_attr attr = {
.sample_period = 1,
.freq = 1,
.sample_freq = 1000,
.type = PERF_TYPE_HARDWARE,
.config = PERF_COUNT_HW_CPU_CYCLES,
};