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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2025-11-25 02:07:49 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-11-25 15:30:14 -0800 |
| commit | 88337b587b8b1f4b418638546a85d3295500dcc2 (patch) | |
| tree | ffcf1717b03fe52ec4ca7b7d2a0396aaa902df19 /tools | |
| parent | 6173c1d6208c146af134e4a1d46f103507d60534 (diff) | |
| download | net-88337b587b8b1f4b418638546a85d3295500dcc2.tar.gz | |
selftests/bpf: Make CS length configurable for rqspinlock stress test
Allow users to configure the critical section delay for both task/normal
and NMI contexts, and set to 20ms and 10ms as before by default.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20251125020749.2421610-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/test_kmods/bpf_test_rqspinlock.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/test_kmods/bpf_test_rqspinlock.c b/tools/testing/selftests/bpf/test_kmods/bpf_test_rqspinlock.c index 4ea7ec420e4e55..e8dd3fbc6ea5f5 100644 --- a/tools/testing/selftests/bpf/test_kmods/bpf_test_rqspinlock.c +++ b/tools/testing/selftests/bpf/test_kmods/bpf_test_rqspinlock.c @@ -51,6 +51,16 @@ module_param(test_mode, int, 0644); MODULE_PARM_DESC(test_mode, "rqspinlock test mode: 0 = AA, 1 = ABBA, 2 = ABBCCA"); +static int normal_delay = 20; +module_param(normal_delay, int, 0644); +MODULE_PARM_DESC(normal_delay, + "rqspinlock critical section length for normal context (20ms default)"); + +static int nmi_delay = 10; +module_param(nmi_delay, int, 0644); +MODULE_PARM_DESC(nmi_delay, + "rqspinlock critical section length for NMI context (10ms default)"); + static struct perf_event **rqsl_evts; static int rqsl_nevts; @@ -138,7 +148,7 @@ static int rqspinlock_worker_fn(void *arg) start_ns = ktime_get_mono_fast_ns(); ret = raw_res_spin_lock_irqsave(worker_lock, flags); rqsl_record_lock_time(ktime_get_mono_fast_ns() - start_ns, false); - mdelay(20); + mdelay(normal_delay); if (!ret) raw_res_spin_unlock_irqrestore(worker_lock, flags); cpu_relax(); @@ -182,7 +192,7 @@ static void nmi_cb(struct perf_event *event, struct perf_sample_data *data, ret = raw_res_spin_lock_irqsave(locks.nmi_lock, flags); rqsl_record_lock_time(ktime_get_mono_fast_ns() - start_ns, true); - mdelay(10); + mdelay(nmi_delay); if (!ret) raw_res_spin_unlock_irqrestore(locks.nmi_lock, flags); |