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[82.235.116.147]) by mx.google.com with ESMTPSA id q10sm1864037wjq.35.2014.11.04.13.41.10 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 04 Nov 2014 13:41:11 -0800 (PST) From: Thomas Monjalon To: dev@dpdk.org Date: Tue, 4 Nov 2014 22:40:33 +0100 Message-Id: <1415137233-6364-1-git-send-email-thomas.monjalon@6wind.com> X-Mailer: git-send-email 2.1.3 In-Reply-To: <1404808110-16314-1-git-send-email-simon.kuenzer@neclab.eu> References: <1404808110-16314-1-git-send-email-simon.kuenzer@neclab.eu> Subject: [dpdk-dev] [PATCH v2] eal: add option --master-lcore X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Nov 2014 21:31:52 -0000 From: Simon Kuenzer Enable users to specify the lcore id that is used as master lcore. Signed-off-by: Simon Kuenzer Signed-off-by: Thomas Monjalon --- changes in v2: - rebase on HEAD including common options for BSD and Linux - use strtol() instead of atoi() to check syntax errors - unit tests app/test/test.c | 1 + app/test/test_eal_flags.c | 49 +++++++++++++++++++++++++++++ lib/librte_eal/bsdapp/eal/eal.c | 7 +++++ lib/librte_eal/common/eal_common_options.c | 31 ++++++++++++++++++ lib/librte_eal/common/include/eal_options.h | 2 ++ lib/librte_eal/linuxapp/eal/eal.c | 7 +++++ 6 files changed, 97 insertions(+) diff --git a/app/test/test.c b/app/test/test.c index 9bee6bb..2fecff5 100644 --- a/app/test/test.c +++ b/app/test/test.c @@ -82,6 +82,7 @@ do_recursive_call(void) } actions[] = { { "run_secondary_instances", test_mp_secondary }, { "test_missing_c_flag", no_action }, + { "test_master_lcore_flag", no_action }, { "test_missing_n_flag", no_action }, { "test_no_hpet_flag", no_action }, { "test_whitelist_flag", no_action }, diff --git a/app/test/test_eal_flags.c b/app/test/test_eal_flags.c index 21e6cca..45020b8 100644 --- a/app/test/test_eal_flags.c +++ b/app/test/test_eal_flags.c @@ -520,6 +520,49 @@ test_missing_c_flag(void) } /* + * Test --master-lcore option with matching coremask + */ +static int +test_master_lcore_flag(void) +{ +#ifdef RTE_EXEC_ENV_BSDAPP + /* BSD target doesn't support prefixes at this point */ + const char * prefix = ""; +#else + char prefix[PATH_MAX], tmp[PATH_MAX]; + if (get_current_prefix(tmp, sizeof(tmp)) == NULL) { + printf("Error - unable to get current prefix!\n"); + return -1; + } + snprintf(prefix, sizeof(prefix), "--file-prefix=%s", tmp); +#endif + + /* --master-lcore flag but no value */ + const char *argv1[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore"}; + /* --master-lcore flag with invalid value */ + const char *argv2[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore", "-1"}; + /* --master-lcore flag with invalid value */ + const char *argv3[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore", "X"}; + /* master lcore not in coremask */ + const char *argv4[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore", "2"}; + /* valid value */ + const char *argv5[] = { prgname, prefix, mp_flag, "-n", "1", "-c", "3", "--master-lcore", "1"}; + + if (launch_proc(argv1) == 0 + || launch_proc(argv2) == 0 + || launch_proc(argv3) == 0 + || launch_proc(argv4) == 0) { + printf("Error - process ran without error with wrong --master-lcore\n"); + return -1; + } + if (launch_proc(argv5) != 0) { + printf("Error - process did not run ok with valid --master-lcore\n"); + return -1; + } + return 0; +} + +/* * Test that the app doesn't run without the -n flag. In all cases * should give an error and fail to run. * Since -n is not compulsory for MP, we instead use --no-huge and --no-shconf @@ -1214,6 +1257,12 @@ test_eal_flags(void) return ret; } + ret = test_master_lcore_flag(); + if (ret < 0) { + printf("Error in test_master_lcore_flag()\n"); + return ret; + } + ret = test_missing_n_flag(); if (ret < 0) { printf("Error in test_missing_n_flag()\n"); diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c index ca99cb9..c764fec 100644 --- a/lib/librte_eal/bsdapp/eal/eal.c +++ b/lib/librte_eal/bsdapp/eal/eal.c @@ -354,6 +354,13 @@ eal_parse_args(int argc, char **argv) if (opt == '?') return -1; + if (opt == OPT_MASTER_LCORE_NUM && !coremask_ok) { + RTE_LOG(ERR, EAL, "please specify the master lcore id" + "after specifying the coremask\n"); + eal_usage(prgname); + return -1; + } + ret = eal_parse_common_option(opt, optarg, &internal_config); /* common parser is not happy */ if (ret < 0) { diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c index 7a5d55e..9166ea1 100644 --- a/lib/librte_eal/common/eal_common_options.c +++ b/lib/librte_eal/common/eal_common_options.c @@ -64,6 +64,7 @@ eal_short_options[] = const struct option eal_long_options[] = { {OPT_HUGE_DIR, 1, 0, OPT_HUGE_DIR_NUM}, + {OPT_MASTER_LCORE, 1, 0, OPT_MASTER_LCORE_NUM}, {OPT_PROC_TYPE, 1, 0, OPT_PROC_TYPE_NUM}, {OPT_NO_SHCONF, 0, 0, OPT_NO_SHCONF_NUM}, {OPT_NO_HPET, 0, 0, OPT_NO_HPET_NUM}, @@ -163,6 +164,27 @@ eal_parse_coremask(const char *coremask) return 0; } +/* Changes the lcore id of the master thread */ +static int +eal_parse_master_lcore(const char *arg) +{ + long master_lcore; + char *parsing_end; + struct rte_config *cfg = rte_eal_get_configuration(); + + errno = 0; + master_lcore = strtol(arg, &parsing_end, 0); + if (errno || parsing_end == arg) + return -1; + + if (!(master_lcore >= 0 && master_lcore < RTE_MAX_LCORE)) + return -1; + if (cfg->lcore_role[master_lcore] != ROLE_RTE) + return -1; + cfg->master_lcore = master_lcore; + return 0; +} + static int eal_parse_syslog(const char *facility, struct internal_config *conf) { @@ -320,6 +342,14 @@ eal_parse_common_option(int opt, const char *optarg, conf->process_type = eal_parse_proc_type(optarg); break; + case OPT_MASTER_LCORE_NUM: + if (eal_parse_master_lcore(optarg) < 0) { + RTE_LOG(ERR, EAL, "invalid parameter for --" + OPT_MASTER_LCORE "\n"); + return -1; + } + break; + case OPT_VDEV_NUM: if (rte_eal_devargs_add(RTE_DEVTYPE_VIRTUAL, optarg) < 0) { @@ -364,6 +394,7 @@ eal_common_usage(void) "[--proc-type primary|secondary|auto]\n\n" "EAL common options:\n" " -c COREMASK : A hexadecimal bitmask of cores to run on\n" + " --"OPT_MASTER_LCORE" ID: Core ID that is used as master\n" " -n NUM : Number of memory channels\n" " -v : Display version information on startup\n" " -m MB : memory to allocate (see also --"OPT_SOCKET_MEM")\n" diff --git a/lib/librte_eal/common/include/eal_options.h b/lib/librte_eal/common/include/eal_options.h index 22819ec..deb872d 100644 --- a/lib/librte_eal/common/include/eal_options.h +++ b/lib/librte_eal/common/include/eal_options.h @@ -43,6 +43,8 @@ enum { OPT_LONG_MIN_NUM = 256, #define OPT_HUGE_DIR "huge-dir" OPT_HUGE_DIR_NUM = OPT_LONG_MIN_NUM, +#define OPT_MASTER_LCORE "master-lcore" + OPT_MASTER_LCORE_NUM, #define OPT_PROC_TYPE "proc-type" OPT_PROC_TYPE_NUM, #define OPT_NO_SHCONF "no-shconf" diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c index 7a1d087..7fcb349 100644 --- a/lib/librte_eal/linuxapp/eal/eal.c +++ b/lib/librte_eal/linuxapp/eal/eal.c @@ -550,6 +550,13 @@ eal_parse_args(int argc, char **argv) if (opt == '?') return -1; + if (opt == OPT_MASTER_LCORE_NUM && !coremask_ok) { + RTE_LOG(ERR, EAL, "please specify the master lcore id" + "after specifying the coremask\n"); + eal_usage(prgname); + return -1; + } + ret = eal_parse_common_option(opt, optarg, &internal_config); /* common parser is not happy */ if (ret < 0) { -- 2.1.3