From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtpbgeu2.qq.com (smtpbgeu2.qq.com [18.194.254.142]) by dpdk.org (Postfix) with ESMTP id 39E115F1D for ; Wed, 27 Feb 2019 18:19:35 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foxmail.com; s=s201512; t=1551287972; bh=ck/28t6Ynll7P9zWlhzxJKCGGrQOU9dMOWGxxr7N9uc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; b=KtYnHXt9F1V0OPkirW5uug8GfOt9JJryl9RFNA95JxtgxE5YN5wpXgfSF8SohX1L/ vEidtnbyeTMi1ejiOLjPfErqzQ1Q4lvtgLhrr1cnfEmOPIANmVPvKwxX7pcj+qAlX/ XSgcT+2oWbg/2NKoQQjjxgiQyfEbN+Cwg5sVaT3g= X-QQ-mid: esmtp7t1551287970tlp8hzspq Received: from promote.cache-dns.local (unknown [112.4.40.171]) by esmtp4.qq.com (ESMTP) with id ; Thu, 28 Feb 2019 01:19:28 +0800 (CST) X-QQ-SSF: B1000000000000F0F6100700000000K X-QQ-FEAT: Tp2hW+Mew+fiYqaslvr+vUdbE/liY4tkMK6l0CjvOW4rzuXwkkWBd7I9Zpfgk Cok+KmNO6/m0yy3Xrro02WqBS0yzCinxQNXHQHdnBX6cgUH+fj/g+91ekFE99YDaIFxocFm /aLHXGoywJNuVZWrGew82SfxGI3iUdB4VQvOyeOM4AA8b1fjol0NdJnnAar3ItMrfgLROS9 4XnWYxnP3OTCWmce7iv7z8weYePL2ChyoZOPcFeFCtmPBfVrP7pcR/tmPwCC189l9D4mwvX Lol/sHs1nbKrXj5Am7+3DO9SCsGJTYi8NVtWbPRbyNQk1n X-QQ-GoodBg: 0 From: Junjie Wan To: remy.horton@intel.com Cc: dev@dpdk.org, junka Date: Thu, 28 Feb 2019 01:19:04 +0800 Message-Id: <1551287944-27314-1-git-send-email-wan.junjie@foxmail.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1550849955-15101-1-git-send-email-wan.junjie@foxmail.com> References: <1550849955-15101-1-git-send-email-wan.junjie@foxmail.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtp:foxmail.com:bgforeign:bgforeign2 X-QQ-Bgrelay: 1 Subject: [dpdk-dev] [PATCH v5] lib/metrics: add unregister api for metrics X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Feb 2019 17:19:36 -0000 From: junka The bitmap will help maintain the metrics. We can dynamically add and remove metrics data. For example, after uninit latency lib, it could remove itself from the metrics. This could make the result from rte_metrics_get_names much more simple to display the wanted metrics data only. Signed-off-by: Junjie Wan --- v5: * Fix test case and coding style issues lib/librte_metrics/rte_metrics.c | 221 ++++++++++++++++++++++++++------------- lib/librte_metrics/rte_metrics.h | 21 ++++ 2 files changed, 170 insertions(+), 72 deletions(-) diff --git a/lib/librte_metrics/rte_metrics.c b/lib/librte_metrics/rte_metrics.c index 99a96b6..d3bbdd5 100644 --- a/lib/librte_metrics/rte_metrics.c +++ b/lib/librte_metrics/rte_metrics.c @@ -12,6 +12,7 @@ #include #include #include +#include #define RTE_METRICS_MAX_METRICS 256 #define RTE_METRICS_MEMZONE_NAME "RTE_METRICS" @@ -28,10 +29,7 @@ struct rte_metrics_meta_s { uint64_t value[RTE_MAX_ETHPORTS]; /** Used for global metrics */ uint64_t global_value; - /** Index of next root element (zero for none) */ - uint16_t idx_next_set; - /** Index of next metric in set (zero for none) */ - uint16_t idx_next_stat; + }; /** @@ -43,14 +41,12 @@ struct rte_metrics_meta_s { * processes is not guaranteed. */ struct rte_metrics_data_s { - /** Index of last metadata entry with valid data. - * This value is not valid if cnt_stats is zero. - */ - uint16_t idx_last_set; /** Number of metrics. */ uint16_t cnt_stats; /** Metric data memory block. */ struct rte_metrics_meta_s metadata[RTE_METRICS_MAX_METRICS]; + /** Metric data bitmap in use */ + struct rte_bitmap *bits; /** Metric data access lock */ rte_spinlock_t lock; }; @@ -60,6 +56,8 @@ struct rte_metrics_data_s { { struct rte_metrics_data_s *stats; const struct rte_memzone *memzone; + uint32_t bmp_size; + void *bmp_mem; if (rte_eal_process_type() != RTE_PROC_PRIMARY) return; @@ -73,6 +71,21 @@ struct rte_metrics_data_s { rte_exit(EXIT_FAILURE, "Unable to allocate stats memzone\n"); stats = memzone->addr; memset(stats, 0, sizeof(struct rte_metrics_data_s)); + + bmp_size = + rte_bitmap_get_memory_footprint(RTE_METRICS_MAX_METRICS); + bmp_mem = rte_malloc("metrics_bits", bmp_size, + RTE_CACHE_LINE_SIZE); + if (bmp_mem == NULL) + rte_exit(EXIT_FAILURE, "Failed to allocate metrics bitmap\n"); + + stats->bits = rte_bitmap_init(RTE_METRICS_MAX_METRICS, + bmp_mem, bmp_size); + if (stats->bits == NULL) { + rte_exit(EXIT_FAILURE, "Failed to init metrics bitmap\n"); + rte_free(bmp_mem); + } + rte_spinlock_init(&stats->lock); } @@ -90,8 +103,8 @@ struct rte_metrics_data_s { struct rte_metrics_meta_s *entry = NULL; struct rte_metrics_data_s *stats; const struct rte_memzone *memzone; - uint16_t idx_name; - uint16_t idx_base; + uint16_t idx_name, idx; + uint16_t idx_base = RTE_METRICS_MAX_METRICS; /* Some sanity checks */ if (cnt_names < 1 || names == NULL) @@ -110,19 +123,33 @@ struct rte_metrics_data_s { rte_spinlock_lock(&stats->lock); - /* Overwritten later if this is actually first set.. */ - stats->metadata[stats->idx_last_set].idx_next_set = stats->cnt_stats; - - stats->idx_last_set = idx_base = stats->cnt_stats; + /* search for a continuous array, fail if not enough*/ + for (idx_name = 0; idx_name < RTE_METRICS_MAX_METRICS; idx_name++) { + if (!rte_bitmap_get(stats->bits, idx_name)) { + idx_base = idx_name; + if (idx_base + cnt_names > RTE_METRICS_MAX_METRICS) + return -ENOMEM; + for (idx = idx_base; + idx < idx_base + cnt_names; idx++) { + if (rte_bitmap_get(stats->bits, idx)) + break; + } + if (idx == idx_base + cnt_names) + break; + idx_name = idx; + } + } + if (idx_base == RTE_METRICS_MAX_METRICS) + return -ENOMEM; - for (idx_name = 0; idx_name < cnt_names; idx_name++) { - entry = &stats->metadata[idx_name + stats->cnt_stats]; - strlcpy(entry->name, names[idx_name], RTE_METRICS_MAX_NAME_LEN); + for (idx = idx_base; idx < idx_base + cnt_names; idx++) { + rte_bitmap_set(stats->bits, idx); + entry = &stats->metadata[idx]; + strlcpy(entry->name, names[idx-idx_base], + RTE_METRICS_MAX_NAME_LEN); memset(entry->value, 0, sizeof(entry->value)); - entry->idx_next_stat = idx_name + stats->cnt_stats + 1; + entry->global_value = 0; } - entry->idx_next_stat = 0; - entry->idx_next_set = 0; stats->cnt_stats += cnt_names; rte_spinlock_unlock(&stats->lock); @@ -142,7 +169,6 @@ struct rte_metrics_data_s { const uint64_t *values, uint32_t count) { - struct rte_metrics_meta_s *entry; struct rte_metrics_data_s *stats; const struct rte_memzone *memzone; uint16_t idx_metric; @@ -163,18 +189,69 @@ struct rte_metrics_data_s { rte_spinlock_lock(&stats->lock); - if (key >= stats->cnt_stats) { + idx_metric = key; + cnt_setsize = 0; + while (idx_metric < RTE_METRICS_MAX_METRICS) { + if (rte_bitmap_get(stats->bits, idx_metric)) { + cnt_setsize++; + idx_metric++; + } else + break; + } + /* Check update does not cross set border */ + if (cnt_setsize == 0 || count > cnt_setsize) { rte_spinlock_unlock(&stats->lock); return -EINVAL; } + + for (idx_value = 0; idx_value < count; idx_value++) { + idx_metric = key + idx_value; + if (port_id == RTE_METRICS_GLOBAL) + stats->metadata[idx_metric].global_value = + values[idx_value]; + else + stats->metadata[idx_metric].value[port_id] = + values[idx_value]; + } + + rte_spinlock_unlock(&stats->lock); + return 0; +} + +int +rte_metrics_unreg_values(uint16_t key, uint16_t count) +{ + struct rte_metrics_data_s *stats; + const struct rte_memzone *memzone; + uint16_t idx_metric; + uint16_t idx_value; + uint16_t cnt_setsize; + + /* Some sanity checks */ + if (count < 1) + return -EINVAL; + + memzone = rte_memzone_lookup(RTE_METRICS_MEMZONE_NAME); + if (memzone == NULL) + return -EIO; + + stats = memzone->addr; + if (stats->cnt_stats < count) + return -EINVAL; + + if (key >= RTE_METRICS_MAX_METRICS) + return -EINVAL; + + rte_spinlock_lock(&stats->lock); + idx_metric = key; cnt_setsize = 1; - while (idx_metric < stats->cnt_stats) { - entry = &stats->metadata[idx_metric]; - if (entry->idx_next_stat == 0) + while (idx_metric < RTE_METRICS_MAX_METRICS) { + if (rte_bitmap_get(stats->bits, idx_metric)) { + cnt_setsize++; + idx_metric++; + } else break; - cnt_setsize++; - idx_metric++; } /* Check update does not cross set border */ if (count > cnt_setsize) { @@ -182,29 +259,26 @@ struct rte_metrics_data_s { return -ERANGE; } - if (port_id == RTE_METRICS_GLOBAL) - for (idx_value = 0; idx_value < count; idx_value++) { - idx_metric = key + idx_value; - stats->metadata[idx_metric].global_value = - values[idx_value]; - } - else - for (idx_value = 0; idx_value < count; idx_value++) { - idx_metric = key + idx_value; - stats->metadata[idx_metric].value[port_id] = - values[idx_value]; - } + for (idx_value = 0; idx_value < count; idx_value++) { + idx_metric = key + idx_value; + memset(stats->metadata[idx_metric].name, 0, + RTE_METRICS_MAX_NAME_LEN); + rte_bitmap_clear(stats->bits, idx_metric); + } + stats->cnt_stats -= count; rte_spinlock_unlock(&stats->lock); + return 0; } + int rte_metrics_get_names(struct rte_metric_name *names, uint16_t capacity) { struct rte_metrics_data_s *stats; const struct rte_memzone *memzone; - uint16_t idx_name; + uint16_t idx_name, idx = 0; int return_value; memzone = rte_memzone_lookup(RTE_METRICS_MEMZONE_NAME); @@ -213,18 +287,23 @@ struct rte_metrics_data_s { stats = memzone->addr; rte_spinlock_lock(&stats->lock); - if (names != NULL) { - if (capacity < stats->cnt_stats) { - return_value = stats->cnt_stats; - rte_spinlock_unlock(&stats->lock); - return return_value; - } - for (idx_name = 0; idx_name < stats->cnt_stats; idx_name++) - strlcpy(names[idx_name].name, + + return_value = stats->cnt_stats; + if (names == NULL || capacity < stats->cnt_stats) { + rte_spinlock_unlock(&stats->lock); + return return_value; + } + + for (idx_name = 0; idx < stats->cnt_stats && + idx_name < RTE_METRICS_MAX_METRICS; idx_name++) { + if (rte_bitmap_get(stats->bits, idx_name)) { + strlcpy(names[idx].name, stats->metadata[idx_name].name, RTE_METRICS_MAX_NAME_LEN); + idx++; + } } - return_value = stats->cnt_stats; + rte_spinlock_unlock(&stats->lock); return return_value; } @@ -237,7 +316,7 @@ struct rte_metrics_data_s { struct rte_metrics_meta_s *entry; struct rte_metrics_data_s *stats; const struct rte_memzone *memzone; - uint16_t idx_name; + uint16_t idx_name, idx = 0; int return_value; if (port_id != RTE_METRICS_GLOBAL && @@ -251,30 +330,28 @@ struct rte_metrics_data_s { stats = memzone->addr; rte_spinlock_lock(&stats->lock); - if (values != NULL) { - if (capacity < stats->cnt_stats) { - return_value = stats->cnt_stats; - rte_spinlock_unlock(&stats->lock); - return return_value; + return_value = stats->cnt_stats; + + if (values == NULL || capacity < stats->cnt_stats) { + rte_spinlock_unlock(&stats->lock); + return return_value; + } + + for (idx_name = 0; idx < stats->cnt_stats && + idx_name < RTE_METRICS_MAX_METRICS; + idx_name++) { + if (rte_bitmap_get(stats->bits, idx_name)) { + entry = &stats->metadata[idx_name]; + values[idx].key = idx_name; + if (port_id == RTE_METRICS_GLOBAL) + values[idx].value = entry->global_value; + else + values[idx].value = entry->value[port_id]; + idx++; } - if (port_id == RTE_METRICS_GLOBAL) - for (idx_name = 0; - idx_name < stats->cnt_stats; - idx_name++) { - entry = &stats->metadata[idx_name]; - values[idx_name].key = idx_name; - values[idx_name].value = entry->global_value; - } - else - for (idx_name = 0; - idx_name < stats->cnt_stats; - idx_name++) { - entry = &stats->metadata[idx_name]; - values[idx_name].key = idx_name; - values[idx_name].value = entry->value[port_id]; - } } - return_value = stats->cnt_stats; + rte_spinlock_unlock(&stats->lock); + return return_value; } diff --git a/lib/librte_metrics/rte_metrics.h b/lib/librte_metrics/rte_metrics.h index 67a60fa..afde1c0 100644 --- a/lib/librte_metrics/rte_metrics.h +++ b/lib/librte_metrics/rte_metrics.h @@ -123,6 +123,27 @@ struct rte_metric_value { int rte_metrics_reg_names(const char * const *names, uint16_t cnt_names); /** + * Unregister set of metrics. + * + * Remove the metrics previously registered + * + * @param key + * Id of metrics to remove + * + * @param count + * Number of metrics + * + * @return + * - Zero: Success + * - -EIO: Error, unable to access metrics shared memory + * (rte_metrics_init() not called) + * - -EINVAL: Error, invalid parameters + * - -ERANGE: Error, oversized + */ +int +rte_metrics_unreg_values(uint16_t key, uint16_t count); + +/** * Get metric name-key lookup table. * * @param names -- 1.8.3.1