Test application to run odp dummy dp thread on no_hz_full kernel mode for few seconds.
- Create 2 threads, running in loop for few seconds. - Mask timer thread. Signed-off-by: Santosh Shukla <[email protected]> --- Note : - Patch set based on Maxim's v2 patch under discussion "implement-odp_init_global-init-mask.patch" - Open for review feedback however wont merge due above dependancy. - More isolation specific changes seen at https://git.linaro.org/people/santosh.shukla/odp.git configure.ac | 1 + example/Makefile.am | 2 +- example/isolation/Makefile.am | 5 + example/isolation/odp_isolation.c | 232 +++++++++++++++++++++++++++++++++++++ 4 files changed, 239 insertions(+), 1 deletion(-) create mode 100644 example/isolation/Makefile.am create mode 100644 example/isolation/odp_isolation.c diff --git a/configure.ac b/configure.ac index 74713a7..2b6758b 100644 --- a/configure.ac +++ b/configure.ac @@ -142,6 +142,7 @@ AC_CONFIG_FILES([Makefile example/packet/Makefile example/packet_netmap/Makefile example/timer/Makefile + example/isolation/Makefile test/Makefile test/api_test/Makefile pkgconfig/libodp.pc]) diff --git a/example/Makefile.am b/example/Makefile.am index 01a3305..4cb4a23 100644 --- a/example/Makefile.am +++ b/example/Makefile.am @@ -1 +1 @@ -SUBDIRS = generator l2fwd odp_example packet packet_netmap timer +SUBDIRS = generator l2fwd odp_example packet packet_netmap timer isolation diff --git a/example/isolation/Makefile.am b/example/isolation/Makefile.am new file mode 100644 index 0000000..7e39773 --- /dev/null +++ b/example/isolation/Makefile.am @@ -0,0 +1,5 @@ +include $(top_srcdir)/example/Makefile.inc + +bin_PROGRAMS = odp_isolation + +dist_odp_isolation_SOURCES = odp_isolation.c diff --git a/example/isolation/odp_isolation.c b/example/isolation/odp_isolation.c new file mode 100644 index 0000000..8d8fffc --- /dev/null +++ b/example/isolation/odp_isolation.c @@ -0,0 +1,232 @@ +/* Copyright (c) 2013, Linaro Limited + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/** + * @file + * + * @example odp_isol_test.c ODP isolation example application + */ + +#include <string.h> +#include <stdlib.h> + +/* ODP main header */ +#include <odp.h> + +/* ODP helper for Linux apps */ +#include <helper/odp_linux.h> + +/* GNU lib C */ +#include <getopt.h> + +#define MAX_WORKERS 32 /**< Max worker threads */ + +/** + * Parsed command line application arguments + */ +typedef struct { + int core_count; /**< Core count*/ + char **core_name; /**< Array of pointers to core name */ +} appl_args_t; + +/** + * @internal Print help + */ +static void print_usage(void) +{ + printf("\n\nUsage: ./odp_isolation [options]\n"); + printf("Options:\n"); + printf(" -l, --cpulist <cpu number in comma separated fashion>\n"); + printf(" -h, --help this help\n"); + printf("\n\n"); +} + +/** + * @internal Worker thread + * + * @param arg Arguments + * + * @return NULL on failure + */ +static void *run_thread(void *arg) +{ + int thr; + unsigned long long tick = 0; + int counter = 0; + + thr = odp_thread_id(); + + printf("Thread %i starts on core %i\n", thr, odp_thread_core()); + + /* loop for some duration then exit */ + do { + tick++; + + if (tick > 10000000) { + + tick = 0; + counter++; + } + + if (counter == 1000) + break; + } while (1); + + return arg; +} + +/** + * @internal Parse arguments + * + * @param argc Argument count + * @param argv Argument vector + * @param args Test arguments + */ +static void parse_args(int argc, char *argv[], appl_args_t *args) +{ + int opt; + int long_index; + char *names, *str, *token, *save; + size_t len; + int i; + + static struct option longopts[] = { + {"cpulists", required_argument, NULL, 'l'}, /* return 'l' */ + {"help", no_argument, NULL, 'h'}, /* return 'h' */ + {NULL, 0, NULL, 0} + }; + + while (1) { + opt = getopt_long(argc, argv, "+l:h", longopts, &long_index); + + if (opt == -1) + break; /* No more options */ + + switch (opt) { + case 'l': + len = strlen(optarg); + if (len == 0) { + print_usage(); + exit(EXIT_FAILURE); + } + len += 1; /* add room for '\0' */ + + names = malloc(len); + if (names == NULL) { + print_usage(); + exit(EXIT_FAILURE); + } + + /* count the number of tokens separated by ',' */ + strcpy(names, optarg); + for (str = names, i = 0;; str = NULL, i++) { + token = strtok_r(str, ",", &save); + if (token == NULL) + break; + } + args->core_count = i; + + if (args->core_count == 0) { + print_usage(); + exit(EXIT_FAILURE); + } + /* allocate storage for the if names */ + args->core_name = + calloc(args->core_count, sizeof(char *)); + + /* store the if names (reset names string) */ + strcpy(names, optarg); + for (str = names, i = 0;; str = NULL, i++) { + token = strtok_r(str, ",", &save); + if (token == NULL) + break; + args->core_name[i] = token; + } + break; + + case 'h': + print_usage(); + exit(EXIT_SUCCESS); + break; + + default: + break; + } + } +} + +/** + * Isolation test application + */ +int main(int argc, char *argv[]) +{ + odp_linux_pthread_t thread_tbl[MAX_WORKERS]; + appl_args_t args; + int thr_id; + int num_workers; + int first_core; + int i; + + printf("\nODP isolation test application\n"); + + memset(&args, 0, sizeof(args)); + parse_args(argc, argv, &args); + + memset(thread_tbl, 0, sizeof(thread_tbl)); + + /* + * Don't need timer init for isolation, so mask them. + */ + if (odp_init_global(ODP_INIT_F_ALL & ~ODP_INIT_F_TIMER)) { + printf("ODP global init failed.\n"); + return -1; + } + + printf("\n"); + printf("ODP system info\n"); + printf("---------------\n"); + printf("ODP API version: %s\n", odp_version_api_str()); + printf("CPU model: %s\n", odp_sys_cpu_model_str()); + printf("CPU freq (hz): %"PRIu64"\n", odp_sys_cpu_hz()); + printf("Cache line size: %i\n", odp_sys_cache_line_size()); + printf("Max core count: %i\n", odp_sys_core_count()); + + printf("\n"); + + /* A worker thread per core */ + num_workers = odp_sys_core_count(); + + if (args.core_count) + num_workers = args.core_count; + + /* force to max core count */ + if (num_workers > MAX_WORKERS) + num_workers = MAX_WORKERS; + + printf("num worker threads: %i\n", num_workers); + + /* + * Init this thread. + * */ + thr_id = odp_thread_create(0); + odp_init_local(thr_id); + + for (i=0; i<num_workers; i++) { + + first_core = atoi(args.core_name[i]); + /* Create and launch worker threads */ + odp_linux_pthread_create(&thread_tbl[i], 1, first_core, + run_thread, NULL); + } + + /* Wait for worker threads to exit */ + odp_linux_pthread_join(thread_tbl, num_workers); + + printf("ODP isolation test complete\n\n"); + + return 0; +} + -- 1.7.9.5 _______________________________________________ lng-odp mailing list [email protected] http://lists.linaro.org/mailman/listinfo/lng-odp
