1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2020 Facebook */
3 #include "bench.h"
4 
5 /* COUNT-GLOBAL benchmark */
6 
7 static struct count_global_ctx {
8 	struct counter hits;
9 } count_global_ctx;
10 
11 static void *count_global_producer(void *input)
12 {
13 	struct count_global_ctx *ctx = &count_global_ctx;
14 
15 	while (true) {
16 		atomic_inc(&ctx->hits.value);
17 	}
18 	return NULL;
19 }
20 
21 static void count_global_measure(struct bench_res *res)
22 {
23 	struct count_global_ctx *ctx = &count_global_ctx;
24 
25 	res->hits = atomic_swap(&ctx->hits.value, 0);
26 }
27 
28 /* COUNT-local benchmark */
29 
30 static struct count_local_ctx {
31 	struct counter *hits;
32 } count_local_ctx;
33 
34 static void count_local_setup(void)
35 {
36 	struct count_local_ctx *ctx = &count_local_ctx;
37 
38 	ctx->hits = calloc(env.producer_cnt, sizeof(*ctx->hits));
39 	if (!ctx->hits)
40 		exit(1);
41 }
42 
43 static void *count_local_producer(void *input)
44 {
45 	struct count_local_ctx *ctx = &count_local_ctx;
46 	int idx = (long)input;
47 
48 	while (true) {
49 		atomic_inc(&ctx->hits[idx].value);
50 	}
51 	return NULL;
52 }
53 
54 static void count_local_measure(struct bench_res *res)
55 {
56 	struct count_local_ctx *ctx = &count_local_ctx;
57 	int i;
58 
59 	for (i = 0; i < env.producer_cnt; i++) {
60 		res->hits += atomic_swap(&ctx->hits[i].value, 0);
61 	}
62 }
63 
64 const struct bench bench_count_global = {
65 	.name = "count-global",
66 	.producer_thread = count_global_producer,
67 	.measure = count_global_measure,
68 	.report_progress = hits_drops_report_progress,
69 	.report_final = hits_drops_report_final,
70 };
71 
72 const struct bench bench_count_local = {
73 	.name = "count-local",
74 	.setup = count_local_setup,
75 	.producer_thread = count_local_producer,
76 	.measure = count_local_measure,
77 	.report_progress = hits_drops_report_progress,
78 	.report_final = hits_drops_report_final,
79 };
80