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bpf/tests: Use migrate disable instead of preempt disable 

Replace the preemption disable/enable with migrate_disable/enable() to
reflect the actual requirement and to allow PREEMPT_RT to substitute it
with an actual migration disable mechanism which does not disable
preemption.

[ tglx: Switched it over to migrate disable ]

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200224145643.785306549@linutronix.de
This commit is contained in:
David Miller 2020-02-24 15:01:44 +01:00 committed by Alexei Starovoitov
parent 3d9f773cf2
commit 6eac7795e8
2 changed files with 6 additions and 6 deletions
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4
lib/test_bpf.c
View File

@ -6660,14 +6660,14 @@ static int __run_one(const struct bpf_prog *fp, const void *data,
u64 start, finish;
int ret = 0, i;
preempt_disable();
migrate_disable();
start = ktime_get_ns();
for (i = 0; i < runs; i++)
ret = BPF_PROG_RUN(fp, data);
finish = ktime_get_ns();
preempt_enable();
migrate_enable();
*duration = finish - start;
do_div(*duration, runs);

8
net/bpf/test_run.c
View File

@ -37,7 +37,7 @@ static int bpf_test_run(struct bpf_prog *prog, void *ctx, u32 repeat,
repeat = 1;
rcu_read_lock();
preempt_disable();
migrate_disable();
time_start = ktime_get_ns();
for (i = 0; i < repeat; i++) {
bpf_cgroup_storage_set(storage);
@ -54,18 +54,18 @@ static int bpf_test_run(struct bpf_prog *prog, void *ctx, u32 repeat,
if (need_resched()) {
time_spent += ktime_get_ns() - time_start;
preempt_enable();
migrate_enable();
rcu_read_unlock();
cond_resched();
rcu_read_lock();
preempt_disable();
migrate_disable();
time_start = ktime_get_ns();
}
}
time_spent += ktime_get_ns() - time_start;
preempt_enable();
migrate_enable();
rcu_read_unlock();
do_div(time_spent, repeat);