From patchwork Wed Jun 10 14:45:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Marchand X-Patchwork-Id: 71199 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7EE4DA051F; Wed, 10 Jun 2020 16:46:15 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 63FF51BFFC; Wed, 10 Jun 2020 16:45:55 +0200 (CEST) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) by dpdk.org (Postfix) with ESMTP id 4D57E1BFF8 for ; Wed, 10 Jun 2020 16:45:54 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1591800353; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FF2wvnHXoEpOGYgT4FheRoA8GEdNa0N/3GiXTUseySw=; b=Zu5EwqBiC760EzwQ+aVGsOmdIXdBC9EAsPXraDebNSDESuKMHU0WewIMw1rtbA2WHnOacP zooyQqaFy0P5FZGCxm752r2itc3j5663GkBlVk3pfChUmXrsTl8EEUhoE7noURiZQ2YZzQ CzE22LoGPCJS4fuWhPfVGFSofqazGjs= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-485-Jj8wl9TKOQqHNrrEVPlLtg-1; Wed, 10 Jun 2020 10:45:51 -0400 X-MC-Unique: Jj8wl9TKOQqHNrrEVPlLtg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 874D080ED8F; Wed, 10 Jun 2020 14:45:50 +0000 (UTC) Received: from dmarchan.remote.csb (unknown [10.40.192.116]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7D36960BF3; Wed, 10 Jun 2020 14:45:49 +0000 (UTC) From: David Marchand To: dev@dpdk.org Cc: Jerin Jacob , Sunil Kumar Kori Date: Wed, 10 Jun 2020 16:45:03 +0200 Message-Id: <20200610144506.30505-5-david.marchand@redhat.com> In-Reply-To: <20200610144506.30505-1-david.marchand@redhat.com> References: <20200610144506.30505-1-david.marchand@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Subject: [dpdk-dev] [PATCH 4/7] eal: introduce thread uninit helper 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This is a preparation step for dynamically unregistering external threads. Since we explicitly allocate a per thread trace buffer in rte_thread_init, add an internal helper to free this buffer. Note: I preferred renaming the current internal function to free all threads trace buffers (new name trace_mem_free()) and reuse the previous name (trace_mem_per_thread_free()) when freeing this buffer for a given thread. Signed-off-by: David Marchand --- lib/librte_eal/common/eal_common_thread.c | 9 +++++ lib/librte_eal/common/eal_common_trace.c | 49 +++++++++++++++++++---- lib/librte_eal/common/eal_thread.h | 5 +++ lib/librte_eal/common/eal_trace.h | 1 + 4 files changed, 57 insertions(+), 7 deletions(-) diff --git a/lib/librte_eal/common/eal_common_thread.c b/lib/librte_eal/common/eal_common_thread.c index fd5c41a2af..8a973ca8ac 100644 --- a/lib/librte_eal/common/eal_common_thread.c +++ b/lib/librte_eal/common/eal_common_thread.c @@ -22,6 +22,7 @@ #include "eal_internal_cfg.h" #include "eal_private.h" #include "eal_thread.h" +#include "eal_trace.h" RTE_DEFINE_PER_LCORE(unsigned int, _lcore_id) = LCORE_ID_ANY; RTE_DEFINE_PER_LCORE(int, _thread_id) = -1; @@ -169,6 +170,14 @@ rte_thread_init(unsigned int lcore_id, rte_cpuset_t *cpuset) #endif } +void +rte_thread_uninit(void) +{ +#ifndef RTE_EXEC_ENV_WINDOWS + trace_mem_per_thread_free(); +#endif +} + struct rte_thread_ctrl_params { void *(*start_routine)(void *); void *arg; diff --git a/lib/librte_eal/common/eal_common_trace.c b/lib/librte_eal/common/eal_common_trace.c index 875553d7e5..cd2d217b02 100644 --- a/lib/librte_eal/common/eal_common_trace.c +++ b/lib/librte_eal/common/eal_common_trace.c @@ -101,7 +101,7 @@ eal_trace_fini(void) { if (!rte_trace_is_enabled()) return; - trace_mem_per_thread_free(); + trace_mem_free(); trace_metadata_destroy(); eal_trace_args_free(); } @@ -370,24 +370,59 @@ __rte_trace_mem_per_thread_alloc(void) rte_spinlock_unlock(&trace->lock); } +static void +trace_mem_per_thread_free_unlocked(struct thread_mem_meta *meta) +{ + if (meta->area == TRACE_AREA_HUGEPAGE) + eal_free_no_trace(meta->mem); + else if (meta->area == TRACE_AREA_HEAP) + free(meta->mem); +} + void trace_mem_per_thread_free(void) +{ + struct trace *trace = trace_obj_get(); + struct __rte_trace_header *header; + uint32_t count; + + if (RTE_PER_LCORE(trace_mem) == NULL) + return; + + header = RTE_PER_LCORE(trace_mem); + rte_spinlock_lock(&trace->lock); + for (count = 0; count < trace->nb_trace_mem_list; count++) { + if (trace->lcore_meta[count].mem == header) + break; + } + if (count != trace->nb_trace_mem_list) { + struct thread_mem_meta *meta = &trace->lcore_meta[count]; + + trace_mem_per_thread_free_unlocked(meta); + if (count != trace->nb_trace_mem_list - 1) { + memmove(meta, meta + 1, + sizeof(*meta) * + (trace->nb_trace_mem_list - count - 1)); + } + trace->nb_trace_mem_list--; + } + rte_spinlock_unlock(&trace->lock); +} + +void +trace_mem_free(void) { struct trace *trace = trace_obj_get(); uint32_t count; - void *mem; if (!rte_trace_is_enabled()) return; rte_spinlock_lock(&trace->lock); for (count = 0; count < trace->nb_trace_mem_list; count++) { - mem = trace->lcore_meta[count].mem; - if (trace->lcore_meta[count].area == TRACE_AREA_HUGEPAGE) - eal_free_no_trace(mem); - else if (trace->lcore_meta[count].area == TRACE_AREA_HEAP) - free(mem); + trace_mem_per_thread_free_unlocked(&trace->lcore_meta[count]); } + trace->nb_trace_mem_list = 0; rte_spinlock_unlock(&trace->lock); } diff --git a/lib/librte_eal/common/eal_thread.h b/lib/librte_eal/common/eal_thread.h index da5e7c93ba..4ecd8fd53a 100644 --- a/lib/librte_eal/common/eal_thread.h +++ b/lib/librte_eal/common/eal_thread.h @@ -25,6 +25,11 @@ __rte_noreturn void *eal_thread_loop(void *arg); */ void rte_thread_init(unsigned int lcore_id, rte_cpuset_t *cpuset); +/** + * Uninitialize per-lcore info for current thread. + */ +void rte_thread_uninit(void); + /** * Get the NUMA socket id from cpu id. * This function is private to EAL. diff --git a/lib/librte_eal/common/eal_trace.h b/lib/librte_eal/common/eal_trace.h index 8f60616156..92c5951c3a 100644 --- a/lib/librte_eal/common/eal_trace.h +++ b/lib/librte_eal/common/eal_trace.h @@ -106,6 +106,7 @@ int trace_metadata_create(void); void trace_metadata_destroy(void); int trace_mkdir(void); int trace_epoch_time_save(void); +void trace_mem_free(void); void trace_mem_per_thread_free(void); /* EAL interface */