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selftests/bpf: rename and clean up userspace-triggered benchmarks

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Rename uprobe-base to more precise usermode-count (it will match other
baseline-like benchmarks, kernel-count and syscall-count). Also use
BENCH_TRIG_USERMODE() macro to define all usermode-based triggering
benchmarks, which include usermode-count and uprobe/uretprobe benchmarks.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240326162151.3981687-2-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrii Nakryiko 2024-03-26 09:21:46 -07:00 committed by Alexei Starovoitov
parent 55fc888ded
commit 1175f8dea3
3 changed files with 48 additions and 72 deletions
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14
tools/testing/selftests/bpf/bench.c
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@ -491,7 +491,12 @@ extern const struct bench bench_rename_kretprobe;
extern const struct bench bench_rename_rawtp;
extern const struct bench bench_rename_fentry;
extern const struct bench bench_rename_fexit;
/* pure counting benchmarks to establish theoretical lmits */
extern const struct bench bench_trig_usermode_count;
extern const struct bench bench_trig_base;
/* kernel-side syscall-triggered benchmarks */
extern const struct bench bench_trig_tp;
extern const struct bench bench_trig_rawtp;
extern const struct bench bench_trig_kprobe;
@ -502,13 +507,15 @@ extern const struct bench bench_trig_fentry;
extern const struct bench bench_trig_fexit;
extern const struct bench bench_trig_fentry_sleep;
extern const struct bench bench_trig_fmodret;
extern const struct bench bench_trig_uprobe_base;
/* uprobe/uretprobe benchmarks */
extern const struct bench bench_trig_uprobe_nop;
extern const struct bench bench_trig_uretprobe_nop;
extern const struct bench bench_trig_uprobe_push;
extern const struct bench bench_trig_uretprobe_push;
extern const struct bench bench_trig_uprobe_ret;
extern const struct bench bench_trig_uretprobe_ret;
extern const struct bench bench_rb_libbpf;
extern const struct bench bench_rb_custom;
extern const struct bench bench_pb_libbpf;
@ -539,7 +546,10 @@ static const struct bench *benchs[] = {
&bench_rename_rawtp,
&bench_rename_fentry,
&bench_rename_fexit,
/* pure counting benchmarks for establishing theoretical limits */
&bench_trig_usermode_count,
&bench_trig_base,
/* syscall-driven triggering benchmarks */
&bench_trig_tp,
&bench_trig_rawtp,
&bench_trig_kprobe,
@ -550,7 +560,7 @@ static const struct bench *benchs[] = {
&bench_trig_fexit,
&bench_trig_fentry_sleep,
&bench_trig_fmodret,
&bench_trig_uprobe_base,
/* uprobes */
&bench_trig_uprobe_nop,
&bench_trig_uretprobe_nop,
&bench_trig_uprobe_push,

104
tools/testing/selftests/bpf/benchs/bench_trigger.c
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@ -14,6 +14,7 @@
/* BPF triggering benchmarks */
static struct trigger_ctx {
struct trigger_bench *skel;
bool usermode_counters;
} ctx;
static struct counter base_hits[MAX_BUCKETS];
@ -74,7 +75,10 @@ static void *trigger_producer(void *input)
static void trigger_measure(struct bench_res *res)
{
res->hits = sum_and_reset_counters(ctx.skel->bss->hits);
if (ctx.usermode_counters)
res->hits = sum_and_reset_counters(base_hits);
else
res->hits = sum_and_reset_counters(ctx.skel->bss->hits);
}
static void setup_ctx(void)
@ -192,7 +196,7 @@ __nocf_check __weak void uprobe_target_ret(void)
asm volatile ("");
}
static void *uprobe_base_producer(void *input)
static void *uprobe_producer_count(void *input)
{
while (true) {
uprobe_target_nop();
@ -248,32 +252,37 @@ static void usetup(bool use_retprobe, void *target_addr)
ctx.skel->links.bench_trigger_uprobe = link;
}
static void uprobe_setup_nop(void)
static void usermode_count_setup(void)
{
ctx.usermode_counters = true;
}
static void uprobe_nop_setup(void)
{
usetup(false, &uprobe_target_nop);
}
static void uretprobe_setup_nop(void)
static void uretprobe_nop_setup(void)
{
usetup(true, &uprobe_target_nop);
}
static void uprobe_setup_push(void)
static void uprobe_push_setup(void)
{
usetup(false, &uprobe_target_push);
}
static void uretprobe_setup_push(void)
static void uretprobe_push_setup(void)
{
usetup(true, &uprobe_target_push);
}
static void uprobe_setup_ret(void)
static void uprobe_ret_setup(void)
{
usetup(false, &uprobe_target_ret);
}
static void uretprobe_setup_ret(void)
static void uretprobe_ret_setup(void)
{
usetup(true, &uprobe_target_ret);
}
@ -387,65 +396,22 @@ const struct bench bench_trig_fmodret = {
.report_final = hits_drops_report_final,
};
const struct bench bench_trig_uprobe_base = {
.name = "trig-uprobe-base",
.setup = NULL, /* no uprobe/uretprobe is attached */
.producer_thread = uprobe_base_producer,
.measure = trigger_base_measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
/* uprobe benchmarks */
#define BENCH_TRIG_USERMODE(KIND, PRODUCER, NAME) \
const struct bench bench_trig_##KIND = { \
.name = "trig-" NAME, \
.validate = trigger_validate, \
.setup = KIND##_setup, \
.producer_thread = uprobe_producer_##PRODUCER, \
.measure = trigger_measure, \
.report_progress = hits_drops_report_progress, \
.report_final = hits_drops_report_final, \
}
const struct bench bench_trig_uprobe_nop = {
.name = "trig-uprobe-nop",
.setup = uprobe_setup_nop,
.producer_thread = uprobe_producer_nop,
.measure = trigger_measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_trig_uretprobe_nop = {
.name = "trig-uretprobe-nop",
.setup = uretprobe_setup_nop,
.producer_thread = uprobe_producer_nop,
.measure = trigger_measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_trig_uprobe_push = {
.name = "trig-uprobe-push",
.setup = uprobe_setup_push,
.producer_thread = uprobe_producer_push,
.measure = trigger_measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_trig_uretprobe_push = {
.name = "trig-uretprobe-push",
.setup = uretprobe_setup_push,
.producer_thread = uprobe_producer_push,
.measure = trigger_measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_trig_uprobe_ret = {
.name = "trig-uprobe-ret",
.setup = uprobe_setup_ret,
.producer_thread = uprobe_producer_ret,
.measure = trigger_measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
const struct bench bench_trig_uretprobe_ret = {
.name = "trig-uretprobe-ret",
.setup = uretprobe_setup_ret,
.producer_thread = uprobe_producer_ret,
.measure = trigger_measure,
.report_progress = hits_drops_report_progress,
.report_final = hits_drops_report_final,
};
BENCH_TRIG_USERMODE(usermode_count, count, "usermode-count");
BENCH_TRIG_USERMODE(uprobe_nop, nop, "uprobe-nop");
BENCH_TRIG_USERMODE(uprobe_push, push, "uprobe-push");
BENCH_TRIG_USERMODE(uprobe_ret, ret, "uprobe-ret");
BENCH_TRIG_USERMODE(uretprobe_nop, nop, "uretprobe-nop");
BENCH_TRIG_USERMODE(uretprobe_push, push, "uretprobe-push");
BENCH_TRIG_USERMODE(uretprobe_ret, ret, "uretprobe-ret");

2
tools/testing/selftests/bpf/benchs/run_bench_uprobes.sh
View File

@ -2,7 +2,7 @@
set -eufo pipefail
for i in base {uprobe,uretprobe}-{nop,push,ret}
for i in usermode-count base {uprobe,uretprobe}-{nop,push,ret}
do
summary=$(sudo ./bench -w2 -d5 -a trig-$i | tail -n1 | cut -d'(' -f1 | cut -d' ' -f3-)
printf "%-15s: %s\n" $i "$summary"