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authorNamhoon Kim <namhoonk@cs.unc.edu>2016-10-13 16:27:40 -0400
committerNamhoon Kim <namhoonk@cs.unc.edu>2016-10-13 16:27:40 -0400
commitb6ef12e31351d23a439597162f8d0fa7031b771d (patch)
tree9e1c36eabaef6def1df0c0ffe56db608f0c5852c
parent262677fc436c3e2109e628bb2f4708c6b279a551 (diff)
RTAS 2017 submissionwip-shared-lib
Diffstat
-rw-r--r--.gitignore4
-rw-r--r--Makefile12
-rw-r--r--bin/mc2mem.c304
-rw-r--r--bin/mc2spin.c250
-rw-r--r--include/cache_common.h140
-rw-r--r--include/litmus.h20
-rw-r--r--src/syscalls.c25
7 files changed, 753 insertions, 2 deletions
diff --git a/.gitignore b/.gitignore
index a52500b..f42c50a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,6 +23,10 @@ showst
23rtspin 23rtspin
24cycles 24cycles
25measure_syscall 25measure_syscall
26mc2spin
27mc2mem_stc
28mc2mem_ssh
29mc2mem
26 30
27# build system files 31# build system files
28.config 32.config
diff --git a/Makefile b/Makefile
index 4742fd2..ee2a9b2 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ LITMUS_KERNEL ?= ../litmus-rt
19# Internal configuration. 19# Internal configuration.
20 20
21# compiler flags 21# compiler flags
22flags-debug = -O2 -Wall -Werror -g -Wdeclaration-after-statement 22flags-debug = -O2 -Wall -g -Wdeclaration-after-statement
23flags-api = -D_XOPEN_SOURCE=600 -D_GNU_SOURCE 23flags-api = -D_XOPEN_SOURCE=600 -D_GNU_SOURCE
24 24
25# architecture-specific flags 25# architecture-specific flags
@@ -73,7 +73,7 @@ AR := ${CROSS_COMPILE}${AR}
73 73
74all = lib ${rt-apps} 74all = lib ${rt-apps}
75rt-apps = cycles base_task rt_launch rtspin release_ts measure_syscall \ 75rt-apps = cycles base_task rt_launch rtspin release_ts measure_syscall \
76 base_mt_task uncache runtests 76 base_mt_task uncache runtests mc2mem_stc mc2mem_ssh mc2spin
77 77
78.PHONY: all lib clean dump-config TAGS tags cscope help doc 78.PHONY: all lib clean dump-config TAGS tags cscope help doc
79 79
@@ -234,6 +234,14 @@ obj-release_ts = release_ts.o
234obj-measure_syscall = null_call.o 234obj-measure_syscall = null_call.o
235lib-measure_syscall = -lm 235lib-measure_syscall = -lm
236 236
237obj-mc2mem_stc = mc2mem.o common.o
238lib-mc2mem_stc = -lrt -static
239
240obj-mc2mem_ssh = mc2mem.o common.o
241lib-mc2mem_ssh = -lrt
242
243obj-mc2spin = mc2spin.o common.o
244lib-mc2spin = -lrt
237# ############################################################################## 245# ##############################################################################
238# Build everything that depends on liblitmus. 246# Build everything that depends on liblitmus.
239 247
diff --git a/bin/mc2mem.c b/bin/mc2mem.c
new file mode 100644
index 0000000..2fba878
--- /dev/null
+++ b/bin/mc2mem.c
@@ -0,0 +1,304 @@
1#include <sys/time.h>
2#include <sys/mman.h>
3
4#include <stdio.h>
5#include <stdlib.h>
6#include <unistd.h>
7#include <time.h>
8#include <string.h>
9#include <assert.h>
10#include <limits.h>
11#include <fcntl.h>
12#include <math.h>
13
14#include "litmus.h"
15#include "common.h"
16#include "cache_common.h"
17
18#define PAGE_SIZE (4096)
19#define CACHELINE_SIZE 32
20#define INTS_IN_CACHELINE (CACHELINE_SIZE/sizeof(int))
21#define CACHELINES_IN_1KB (1024 / sizeof(cacheline_t))
22#define INTS_IN_1KB (1024 / sizeof(int))
23#define INTS_IN_CACHELINE (CACHELINE_SIZE/sizeof(int))
24
25static int loops = 100;
26static cacheline_t* arena = NULL;
27static int verbose = 0;
28
29#define UNCACHE_DEV "/dev/litmus/uncache"
30
31/* Random walk around the arena in cacheline-sized chunks.
32 Cacheline-sized chucks ensures the same utilization of each
33 hit line as sequential read. (Otherwise, our utilization
34 would only be 1/INTS_IN_CACHELINE.) */
35static int random_walk(cacheline_t *mem, int wss, int write_cycle)
36{
37 /* a random cycle among the cache lines was set up by init_arena(). */
38 int sum, i, next;
39
40 int numlines = wss * CACHELINES_IN_1KB;
41
42 sum = 0;
43
44 /* contents of arena is structured s.t. offsets are all
45 w.r.t. to start of arena, so compute the initial offset */
46 next = mem - arena;
47
48 if (write_cycle == 0) {
49 for (i = 0; i < numlines; i++) {
50 /* every element in the cacheline has the same value */
51 next = arena[next].line[0];
52 sum += next;
53 }
54 }
55
56 else {
57 int w, which_line;
58 for (i = 0, w = 0; i < numlines; i++) {
59 which_line = next;
60 next = arena[next].line[0];
61 if((w % write_cycle) != (write_cycle - 1)) {
62 sum += next;
63 }
64 else {
65 ((volatile cacheline_t*)arena)[which_line].line[0] = next;
66 }
67 }
68 }
69 return sum;
70}
71
72static cacheline_t* random_start(int wss)
73{
74 return arena + randrange(0, ((wss * 1024)/sizeof(cacheline_t)));
75}
76
77static volatile int dont_optimize_me = 0;
78
79static void usage(char *error) {
80 fprintf(stderr, "Error: %s\n", error);
81 fprintf(stderr,
82 "Usage:\n"
83 " rt_spin [COMMON-OPTS] WCET PERIOD DURATION\n"
84 " rt_spin [COMMON-OPTS] -f FILE [-o COLUMN] WCET PERIOD\n"
85 " rt_spin -l\n"
86 "\n"
87 "COMMON-OPTS = [-w] [-s SCALE]\n"
88 " [-p PARTITION/CLUSTER [-z CLUSTER SIZE]] [-m CRITICALITY LEVEL]\n"
89 " [-k WSS] [-l LOOPS] [-b BUDGET]\n"
90 "\n"
91 "WCET and PERIOD are milliseconds, DURATION is seconds.\n");
92 exit(EXIT_FAILURE);
93}
94
95static int loop_once(int wss)
96{
97 cacheline_t *mem;
98 int temp;
99
100 mem = random_start(wss);
101 temp = random_walk(mem, wss, 0);
102
103 dont_optimize_me = temp;
104
105 return dont_optimize_me;
106}
107
108static int job(int wss, double exec_time, double program_end)
109{
110 if (wctime() > program_end)
111 return 0;
112 else {
113 register unsigned int iter = 0;
114 register cycles_t t;
115 t = get_cycles();
116 while(iter++ < loops) {
117 loop_once(wss);
118 }
119 t = get_cycles() - t;
120 if (verbose)
121 printf("%ld cycles\n", t);
122 sleep_next_period();
123 return 1;
124 }
125}
126
127#define OPTSTR "p:wl:m:i:b:k:v"
128int main(int argc, char** argv)
129{
130 int ret;
131 lt_t wcet, period, budget;
132 double wcet_ms, period_ms, budget_ms;
133 unsigned int priority = LITMUS_NO_PRIORITY;
134 int migrate = 0;
135 int cluster = 0;
136 int opt;
137 int wait = 0;
138 double duration = 0, start = 0;
139 struct rt_task param;
140 struct mc2_task mc2_param;
141 struct reservation_config config;
142 int res_type = PERIODIC_POLLING;
143 size_t arena_sz;
144 int wss = 0;
145
146 /* default for reservation */
147 config.id = 0;
148 config.priority = LITMUS_NO_PRIORITY; /* use EDF by default */
149 config.cpu = -1;
150
151 mc2_param.crit = CRIT_LEVEL_C;
152
153 budget_ms = 1000;
154
155 while ((opt = getopt(argc, argv, OPTSTR)) != -1) {
156 switch (opt) {
157 case 'w':
158 wait = 1;
159 break;
160 case 'p':
161 cluster = atoi(optarg);
162 migrate = 1;
163 config.cpu = cluster;
164 break;
165 case 'l':
166 loops = atoi(optarg);
167 break;
168 case 'k':
169 wss = atoi(optarg);
170 break;
171 case 'm':
172 mc2_param.crit = atoi(optarg);
173 if ((mc2_param.crit >= CRIT_LEVEL_A) && (mc2_param.crit <= CRIT_LEVEL_C)) {
174 res_type = PERIODIC_POLLING;
175 }
176 else
177 usage("Invalid criticality level.");
178 break;
179 case 'b':
180 budget_ms = atof(optarg);
181 break;
182 case 'i':
183 config.priority = atoi(optarg);
184 break;
185 case 'v':
186 verbose = 1;
187 break;
188 case ':':
189 usage("Argument missing.");
190 break;
191 case '?':
192 default:
193 usage("Bad argument.");
194 break;
195 }
196 }
197 srand(getpid());
198
199 /*
200 * We need three parameters
201 */
202 if (argc - optind < 3)
203 usage("Arguments missing.");
204
205 wcet_ms = atof(argv[optind + 0]);
206 period_ms = atof(argv[optind + 1]);
207
208 wcet = ms2ns(wcet_ms);
209 period = ms2ns(period_ms);
210 budget = ms2ns(budget_ms);
211 if (wcet <= 0)
212 usage("The worst-case execution time must be a "
213 "positive number.");
214 if (period <= 0)
215 usage("The period must be a positive number.");
216 if (wcet > period) {
217 usage("The worst-case execution time must not "
218 "exceed the period.");
219 }
220 if (wss == 0) {
221 usage("You need to specify a WSS (-k option).");
222 }
223
224 duration = atof(argv[optind + 2]);
225
226 if (migrate) {
227 ret = be_migrate_to_domain(cluster);
228 if (ret < 0)
229 bail_out("could not migrate to target partition or cluster.");
230 }
231
232 /* reservation config */
233 config.id = gettid();
234 config.polling_params.budget = budget;
235 config.polling_params.period = period;
236 config.polling_params.offset = 0;
237 config.polling_params.relative_deadline = 0;
238
239 if (config.polling_params.budget > config.polling_params.period) {
240 usage("The budget must not exceed the period.");
241 }
242
243 /* create a reservation */
244 ret = reservation_create(res_type, &config);
245 if (ret < 0) {
246 bail_out("failed to create reservation.");
247 }
248
249 init_rt_task_param(&param);
250 param.exec_cost = wcet;
251 param.period = period;
252 param.priority = priority;
253 param.cls = RT_CLASS_HARD;
254 param.release_policy = TASK_PERIODIC;
255 param.budget_policy = NO_ENFORCEMENT;
256 if (migrate) {
257 param.cpu = gettid();
258 }
259 ret = set_rt_task_param(gettid(), &param);
260 if (ret < 0)
261 bail_out("could not setup rt task params");
262
263 mc2_param.res_id = gettid();
264 ret = set_mc2_task_param(gettid(), &mc2_param);
265 if (ret < 0)
266 bail_out("could not setup mc2 task params");
267
268 arena_sz = wss*1024;
269 arena = alloc_arena(arena_sz, 0, 0);
270 init_arena(arena, arena_sz);
271
272 lock_memory();
273
274 if (mc2_param.crit == CRIT_LEVEL_C)
275 set_page_color(-1);
276 else
277 set_page_color(config.cpu);
278
279 ret = init_litmus();
280 if (ret != 0)
281 bail_out("init_litmus() failed\n");
282
283 start = wctime();
284 ret = task_mode(LITMUS_RT_TASK);
285 if (ret != 0)
286 bail_out("could not become RT task");
287
288 if (wait) {
289 ret = wait_for_ts_release();
290 if (ret != 0)
291 bail_out("wait_for_ts_release()");
292 start = wctime();
293 }
294
295 while (job(wss, wcet_ms * 0.001, start + duration)) {};
296
297 ret = task_mode(BACKGROUND_TASK);
298 if (ret != 0)
299 bail_out("could not become regular task (huh?)");
300
301 reservation_destroy(gettid(), config.cpu);
302 dealloc_arena(arena, arena_sz);
303 return 0;
304}
diff --git a/bin/mc2spin.c b/bin/mc2spin.c
new file mode 100644
index 0000000..e41c62c
--- /dev/null
+++ b/bin/mc2spin.c
@@ -0,0 +1,250 @@
1#include <sys/time.h>
2#include <sys/mman.h>
3
4#include <stdio.h>
5#include <stdlib.h>
6#include <unistd.h>
7#include <time.h>
8#include <string.h>
9#include <assert.h>
10#include <limits.h>
11#include <fcntl.h>
12#include <math.h>
13
14#include "litmus.h"
15#include "common.h"
16
17#define PAGE_SIZE (4096)
18
19static int verbose = 0;
20
21#define UNCACHE_DEV "/dev/litmus/uncache"
22
23static void usage(char *error) {
24 fprintf(stderr, "Error: %s\n", error);
25 fprintf(stderr,
26 "Usage:\n"
27 " rt_spin [COMMON-OPTS] WCET PERIOD DURATION\n"
28 " rt_spin [COMMON-OPTS] -f FILE [-o COLUMN] WCET PERIOD\n"
29 " rt_spin -l\n"
30 "\n"
31 "COMMON-OPTS = [-w] [-s SCALE]\n"
32 " [-p PARTITION/CLUSTER [-z CLUSTER SIZE]] [-m CRITICALITY LEVEL]\n"
33 " [-k WSS] [-l LOOPS] [-b BUDGET]\n"
34 "\n"
35 "WCET and PERIOD are milliseconds, DURATION is seconds.\n");
36 exit(EXIT_FAILURE);
37}
38
39#define NUMS 4096
40static int num[NUMS];
41static char* progname;
42
43static int loop_once(void)
44{
45 int i, j = 0;
46 for (i = 0; i < NUMS; i++)
47 j += num[i]++;
48 return j;
49}
50
51static int loop_for(double exec_time, double emergency_exit)
52{
53 double last_loop = 0, loop_start;
54 int tmp = 0;
55
56 double start = cputime();
57 double now = cputime();
58
59 while (now + last_loop < start + exec_time) {
60 loop_start = now;
61 tmp += loop_once();
62 now = cputime();
63 last_loop = now - loop_start;
64 if (emergency_exit && wctime() > emergency_exit) {
65 /* Oops --- this should only be possible if the execution time tracking
66 * is broken in the LITMUS^RT kernel. */
67 fprintf(stderr, "!!! rtspin/%d emergency exit!\n", getpid());
68 fprintf(stderr, "Something is seriously wrong! Do not ignore this.\n");
69 break;
70 }
71 }
72
73 return tmp;
74}
75
76static int job(double exec_time, double program_end)
77{
78 if (wctime() > program_end)
79 return 0;
80 else {
81 loop_for(exec_time, program_end + 1);
82 sleep_next_period();
83 return 1;
84 }
85}
86
87#define OPTSTR "p:wm:i:v"
88int main(int argc, char** argv)
89{
90 int ret;
91 lt_t wcet, period, budget;
92 double wcet_ms, period_ms;
93 unsigned int priority = LITMUS_NO_PRIORITY;
94 int migrate = 0;
95 int cluster = 0;
96 int opt;
97 int wait = 0;
98 double duration = 0, start = 0;
99 struct rt_task param;
100 struct mc2_task mc2_param;
101 struct reservation_config config;
102 int res_type = PERIODIC_POLLING;
103
104 /* default for reservation */
105 config.id = 0;
106 config.priority = LITMUS_NO_PRIORITY; /* use EDF by default */
107 config.cpu = -1;
108
109 mc2_param.crit = CRIT_LEVEL_C;
110
111 progname = argv[0];
112
113 while ((opt = getopt(argc, argv, OPTSTR)) != -1) {
114 switch (opt) {
115 case 'w':
116 wait = 1;
117 break;
118 case 'p':
119 cluster = atoi(optarg);
120 migrate = 1;
121 config.cpu = cluster;
122 break;
123 case 'm':
124 mc2_param.crit = atoi(optarg);
125 if ((mc2_param.crit >= CRIT_LEVEL_A) && (mc2_param.crit <= CRIT_LEVEL_C)) {
126 res_type = PERIODIC_POLLING;
127 }
128 else
129 usage("Invalid criticality level.");
130 break;
131 case 'i':
132 config.priority = atoi(optarg);
133 break;
134 case 'v':
135 verbose = 1;
136 break;
137 case ':':
138 usage("Argument missing.");
139 break;
140 case '?':
141 default:
142 usage("Bad argument.");
143 break;
144 }
145 }
146 srand(getpid());
147
148 /*
149 * We need three parameters
150 */
151 if (argc - optind < 3)
152 usage("Arguments missing.");
153
154 wcet_ms = atof(argv[optind + 0]);
155 period_ms = atof(argv[optind + 1]);
156
157 wcet = ms2ns(wcet_ms);
158 period = ms2ns(period_ms);
159 budget = ms2ns(wcet_ms+1);
160 if (wcet <= 0)
161 usage("The worst-case execution time must be a "
162 "positive number.");
163 if (period <= 0)
164 usage("The period must be a positive number.");
165 if (wcet > period) {
166 usage("The worst-case execution time must not "
167 "exceed the period.");
168 }
169
170 duration = atof(argv[optind + 2]);
171
172 if (mc2_param.crit == CRIT_LEVEL_C) {
173 migrate = 0;
174 config.cpu = -1;
175 }
176
177 if (migrate) {
178 ret = be_migrate_to_domain(cluster);
179 if (ret < 0)
180 bail_out("could not migrate to target partition or cluster.");
181 }
182
183 /* reservation config */
184 config.id = gettid();
185 config.polling_params.budget = budget;
186 config.polling_params.period = period;
187 config.polling_params.offset = 0;
188 config.polling_params.relative_deadline = 0;
189
190 if (config.polling_params.budget > config.polling_params.period) {
191 usage("The budget must not exceed the period.");
192 }
193
194 /* create a reservation */
195 ret = reservation_create(res_type, &config);
196 if (ret < 0) {
197 bail_out("failed to create reservation.");
198 }
199
200 init_rt_task_param(&param);
201 param.exec_cost = wcet;
202 param.period = period;
203 param.priority = priority;
204 param.cls = RT_CLASS_HARD;
205 param.release_policy = TASK_PERIODIC;
206 param.budget_policy = NO_ENFORCEMENT;
207 if (migrate) {
208 param.cpu = gettid();
209 }
210 ret = set_rt_task_param(gettid(), &param);
211 if (ret < 0)
212 bail_out("could not setup rt task params");
213
214 mc2_param.res_id = gettid();
215 ret = set_mc2_task_param(gettid(), &mc2_param);
216 if (ret < 0)
217 bail_out("could not setup mc2 task params");
218
219 ret = init_litmus();
220 if (ret != 0)
221 bail_out("init_litmus() failed\n");
222
223 start = wctime();
224
225 ret = task_mode(LITMUS_RT_TASK);
226 if (ret != 0)
227 bail_out("could not become RT task");
228
229 if (wait) {
230 ret = wait_for_ts_release();
231 if (ret != 0)
232 bail_out("wait_for_ts_release()");
233 start = wctime();
234 }
235
236 do {
237 if (verbose) {
238 printf("rtspin:%u @ %.4fms\n", gettid(),
239 (wctime() - start) * 1000);
240 }
241 } while (job(wcet_ms * 0.001, start + duration));
242
243 ret = task_mode(BACKGROUND_TASK);
244 if (ret != 0)
245 bail_out("could not become regular task (huh?)");
246
247 reservation_destroy(gettid(), config.cpu);
248 return 0;
249}
250
diff --git a/include/cache_common.h b/include/cache_common.h
new file mode 100644
index 0000000..8239233
--- /dev/null
+++ b/include/cache_common.h
@@ -0,0 +1,140 @@
1#ifndef __CACHE_COMMON_H__
2#define __CACHE_COMMON_H__
3
4#include <stdio.h>
5#include <stdlib.h>
6#include <time.h>
7#include <string.h>
8#include <assert.h>
9
10#include <signal.h>
11#include <sys/mman.h>
12#include <sys/types.h>
13#include <sys/stat.h>
14#include <fcntl.h>
15#include <unistd.h>
16
17#include <sys/io.h>
18#include <sys/utsname.h>
19
20#include <sched.h>
21#include <sys/time.h>
22#include <sys/resource.h>
23
24#include "litmus.h"
25#include "asm/cycles.h"
26
27#if defined(__i386__) || defined(__x86_64__)
28#include "asm/irq.h"
29#endif
30
31
32#define UNCACHE_DEV "/dev/litmus/uncache"
33
34static void die(char *error)
35{
36 fprintf(stderr, "Error: %s (errno: %m)\n",
37 error);
38 exit(1);
39}
40
41static int lock_memory(void)
42{
43 return mlockall(MCL_CURRENT | MCL_FUTURE);
44}
45
46/* define CACHELINE_SIZE if not provided by compiler args */
47#ifndef CACHELINE_SIZE
48#if defined(__i386__) || defined(__x86_64__)
49/* recent intel cpus */
50#define CACHELINE_SIZE 64
51#elif defined(__arm__)
52/* at least with Cortex-A9 cpus ("8 words") */
53#define CACHELINE_SIZE 32
54#else
55#error "Could not determine cacheline size!"
56#endif
57#endif
58
59#define INTS_IN_CACHELINE (CACHELINE_SIZE/sizeof(int))
60typedef struct cacheline
61{
62 int line[INTS_IN_CACHELINE];
63} __attribute__((aligned(CACHELINE_SIZE))) cacheline_t;
64
65#define CACHELINES_IN_1KB (1024 / sizeof(cacheline_t))
66
67
68static cacheline_t* alloc_arena(size_t size, int use_huge_pages, int use_uncache_pages)
69{
70 int flags = MAP_PRIVATE | MAP_POPULATE;
71 cacheline_t* arena = NULL;
72 int fd;
73
74 if(use_huge_pages)
75 flags |= MAP_HUGETLB;
76
77 if(use_uncache_pages) {
78 fd = open(UNCACHE_DEV, O_RDWR);
79 if (fd == -1)
80 die("Failed to open uncache device. Are you running the LITMUS^RT kernel?");
81 }
82 else {
83 fd = -1;
84 flags |= MAP_ANONYMOUS;
85 }
86
87 arena = mmap(0, size, PROT_READ | PROT_WRITE, flags, fd, 0);
88
89 if(use_uncache_pages)
90 close(fd);
91
92 assert(arena);
93
94 return arena;
95}
96
97static void dealloc_arena(cacheline_t* arena, size_t size)
98{
99 int ret = munmap((void*)arena, size);
100 if(ret != 0)
101 die("munmap() error");
102}
103
104static int randrange(int min, int max)
105{
106 /* generate a random number on the range [min, max) w/o skew */
107 int limit = max - min;
108 int devisor = RAND_MAX/limit;
109 int retval;
110
111 do {
112 retval = rand() / devisor;
113 } while(retval == limit);
114 retval += min;
115
116 return retval;
117}
118
119static void init_arena(cacheline_t* arena, size_t size)
120{
121 int i;
122 size_t num_arena_elem = size / sizeof(cacheline_t);
123
124 /* Generate a cycle among the cache lines using Sattolo's algorithm.
125 Every int in the cache line points to the same cache line.
126 Note: Sequential walk doesn't care about these values. */
127 for (i = 0; i < num_arena_elem; i++) {
128 int j;
129 for(j = 0; j < INTS_IN_CACHELINE; ++j)
130 arena[i].line[j] = i;
131 }
132 while(1 < i--) {
133 int j = randrange(0, i);
134 cacheline_t temp = arena[j];
135 arena[j] = arena[i];
136 arena[i] = temp;
137 }
138}
139
140#endif
diff --git a/include/litmus.h b/include/litmus.h
index b9dbdb5..4b97b87 100644
--- a/include/litmus.h
+++ b/include/litmus.h
@@ -40,6 +40,8 @@ extern "C" {
40 40
41#include "migration.h" 41#include "migration.h"
42 42
43#include "litmus/mc2_common.h"
44
43/** 45/**
44 * @private 46 * @private
45 * The numeric ID of the LITMUS^RT scheduling class. 47 * The numeric ID of the LITMUS^RT scheduling class.
@@ -146,6 +148,12 @@ int sporadic_clustered(lt_t e_ns, lt_t p_ns, int cluster);
146/** Convert microseconds to nanoseconds 148/** Convert microseconds to nanoseconds
147 * @param us Time units in microseconds */ 149 * @param us Time units in microseconds */
148#define us2ns(us) ((us)*1000LL) 150#define us2ns(us) ((us)*1000LL)
151#define ns2s(ns) ((ns)/1000000000LL)
152#define ns2ms(ns) ((ns)/1000000LL)
153#define ns2us(ns) ((ns)/1000LL)
154#define us2ms(us) ((us)/1000LL)
155#define us2s(us) ((us)/1000000LL)
156#define ms2s(ms) ((ms)/1000LL)
149 157
150/** 158/**
151 * Locking protocols for allocated shared objects 159 * Locking protocols for allocated shared objects
@@ -416,6 +424,18 @@ int null_call(cycles_t *timestamp);
416 */ 424 */
417struct control_page* get_ctrl_page(void); 425struct control_page* get_ctrl_page(void);
418 426
427int reservation_create(int rtype, void *config);
428
429int reservation_destroy(unsigned int reservation_id, int cpu);
430
431int set_mc2_task_param(pid_t pid, struct mc2_task* param);
432
433int set_page_color(int cpu);
434
435int test_call(unsigned int param);
436
437typedef struct cacheline cacheline_t;
438
419#ifdef __cplusplus 439#ifdef __cplusplus
420} 440}
421#endif 441#endif
diff --git a/src/syscalls.c b/src/syscalls.c
index c68f15b..ab064ad 100644
--- a/src/syscalls.c
+++ b/src/syscalls.c
@@ -86,3 +86,28 @@ int null_call(cycles_t *timestamp)
86{ 86{
87 return syscall(__NR_null_call, timestamp); 87 return syscall(__NR_null_call, timestamp);
88} 88}
89
90int reservation_create(int rtype, void *config)
91{
92 return syscall(__NR_reservation_create, rtype, config);
93}
94
95int reservation_destroy(unsigned int reservation_id, int cpu)
96{
97 return syscall(__NR_reservation_destroy, reservation_id, cpu);
98}
99
100int set_mc2_task_param(pid_t pid, struct mc2_task *param)
101{
102 return syscall(__NR_set_mc2_task_param, pid, param);
103}
104
105int set_page_color(int cpu)
106{
107 return syscall(__NR_set_page_color, cpu);
108}
109
110int test_call(unsigned int param)
111{
112 return syscall(__NR_test_call, param);
113}
generated by cgit v1.2.2 (git 2.25.0) at 2024-05-19 10:36:22 -0400