[PATCHv4] opensm: Reduce heap consumption by unicast routing tables (LFTs)

Message ID	20091013130002.GA20173@comcast.net (mailing list archive)
State	Not Applicable, archived
Headers	show Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n9DDAIqe026543 for <patchwork-linux-rdma@patchwork.kernel.org>; Tue, 13 Oct 2009 13:10:18 GMT Date: Tue, 13 Oct 2009 09:00:03 -0400 From: Hal Rosenstock <hnrose@comcast.net> To: sashak@voltaire.com Cc: linux-rdma@vger.kernel.org Subject: [PATCHv4] opensm: Reduce heap consumption by unicast routing tables (LFTs) Message-ID: <20091013130002.GA20173@comcast.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk

diff --git a/opensm/include/opensm/osm_switch.h b/opensm/include/opensm/osm_switch.h index 502e5a7..655491d 100644 --- a/opensm/include/opensm/osm_switch.h +++ b/opensm/include/opensm/osm_switch.h @@ -102,6 +102,7 @@ typedef struct osm_switch { osm_port_profile_t *p_prof; uint8_t *lft; uint8_t *new_lft; + uint16_t lft_size; osm_mcast_tbl_t mcast_tbl; int32_t mft_block_num; uint32_t mft_position; @@ -405,7 +406,7 @@ uint8_t osm_switch_get_port_least_hops(IN const osm_switch_t * p_sw, static inline uint8_t osm_switch_get_port_by_lid(IN const osm_switch_t * p_sw, IN uint16_t lid_ho) { - if (lid_ho == 0 || lid_ho > IB_LID_UCAST_END_HO) + if (lid_ho == 0 || lid_ho > p_sw->max_lid_ho) return OSM_NO_PATH; return p_sw->lft[lid_ho]; } @@ -711,7 +712,7 @@ osm_switch_set_lft_block(IN osm_switch_t * p_sw, IN const uint8_t * p_block, (uint16_t) (block_num * IB_SMP_DATA_SIZE); CL_ASSERT(p_sw); - if (lid_start + IB_SMP_DATA_SIZE > IB_LID_UCAST_END_HO) + if (lid_start + IB_SMP_DATA_SIZE > p_sw->lft_size) return IB_INVALID_PARAMETER; memcpy(&p_sw->lft[lid_start], p_block, IB_SMP_DATA_SIZE); diff --git a/opensm/opensm/osm_state_mgr.c b/opensm/opensm/osm_state_mgr.c index 185c700..c40c9d3 100644 --- a/opensm/opensm/osm_state_mgr.c +++ b/opensm/opensm/osm_state_mgr.c @@ -1,6 +1,6 @@ /* * Copyright (c) 2004-2008 Voltaire, Inc. All rights reserved. - * Copyright (c) 2002-2008 Mellanox Technologies LTD. All rights reserved. + * Copyright (c) 2002-2009 Mellanox Technologies LTD. All rights reserved. * Copyright (c) 1996-2003 Intel Corporation. All rights reserved. * Copyright (c) 2009 HNR Consulting. All rights reserved. * @@ -1011,9 +1011,9 @@ static void cleanup_switch(cl_map_item_t * item, void *log) if (!sw->new_lft) return; - if (memcmp(sw->lft, sw->new_lft, IB_LID_UCAST_END_HO + 1)) + if (memcmp(sw->lft, sw->new_lft, sw->lft_size)) osm_log(log, OSM_LOG_ERROR, "ERR 331D: " - "LFT of switch 0x%016" PRIx64 " is not up to date.\n", + "LFT of switch 0x%016" PRIx64 " is not up to date\n", cl_ntoh64(sw->p_node->node_info.node_guid)); else { free(sw->new_lft); diff --git a/opensm/opensm/osm_switch.c b/opensm/opensm/osm_switch.c index ad1018f..00aad5a 100644 --- a/opensm/opensm/osm_switch.c +++ b/opensm/opensm/osm_switch.c @@ -1,6 +1,6 @@ /* * Copyright (c) 2004-2008 Voltaire, Inc. All rights reserved. - * Copyright (c) 2002-2008 Mellanox Technologies LTD. All rights reserved. + * Copyright (c) 2002-2009 Mellanox Technologies LTD. All rights reserved. * Copyright (c) 1996-2003 Intel Corporation. All rights reserved. * Copyright (c) 2009 HNR Consulting. All rights reserved. * @@ -130,12 +130,6 @@ osm_switch_t *osm_switch_new(IN osm_node_t * p_node, p_sw->num_ports = num_ports; p_sw->need_update = 2; - p_sw->lft = malloc(IB_LID_UCAST_END_HO + 1); - if (!p_sw->lft) - goto err; - - memset(p_sw->lft, OSM_NO_PATH, IB_LID_UCAST_END_HO + 1); - p_sw->p_prof = malloc(sizeof(*p_sw->p_prof) * num_ports); if (!p_sw->p_prof) goto err; @@ -166,7 +160,7 @@ boolean_t osm_switch_get_lft_block(IN const osm_switch_t * p_sw, CL_ASSERT(p_sw); CL_ASSERT(p_block); - if (base_lid_ho > p_sw->max_lid_ho) + if (base_lid_ho >= p_sw->lft_size) return FALSE; CL_ASSERT(base_lid_ho + IB_SMP_DATA_SIZE <= IB_LID_UCAST_END_HO); @@ -498,21 +492,46 @@ void osm_switch_clear_hops(IN osm_switch_t * p_sw) /********************************************************************** **********************************************************************/ +static int alloc_lft(IN osm_switch_t * p_sw, uint16_t lids) +{ + uint16_t lft_size; + uint8_t *new_lft; + + lft_size = lids; + /* Ensure LFT is in units of LFT block size */ + lft_size = (lids + IB_SMP_DATA_SIZE - 1) / IB_SMP_DATA_SIZE * IB_SMP_DATA_SIZE; + + if (lft_size > p_sw->lft_size) { + new_lft = realloc(p_sw->lft, lft_size); + if (!new_lft) + return -1; + memset(new_lft + p_sw->lft_size, OSM_NO_PATH, + lft_size - p_sw->lft_size); + p_sw->lft = new_lft; + p_sw->lft_size = lft_size; + } + return 0; +} + +/********************************************************************** + **********************************************************************/ int osm_switch_prepare_path_rebuild(IN osm_switch_t * p_sw, IN uint16_t max_lids) { uint8_t **hops; unsigned i; + if (alloc_lft(p_sw, max_lids)) + return -1; + for (i = 0; i < p_sw->num_ports; i++) osm_port_prof_construct(&p_sw->p_prof[i]); osm_switch_clear_hops(p_sw); - if (!p_sw->new_lft && - !(p_sw->new_lft = malloc(IB_LID_UCAST_END_HO + 1))) - return IB_INSUFFICIENT_MEMORY; + if (!(p_sw->new_lft = realloc(p_sw->new_lft, p_sw->lft_size))) + return -1; - memset(p_sw->new_lft, OSM_NO_PATH, IB_LID_UCAST_END_HO + 1); + memset(p_sw->new_lft, OSM_NO_PATH, p_sw->lft_size); if (!p_sw->hops) { hops = malloc((max_lids + 1) * sizeof(hops[0])); diff --git a/opensm/opensm/osm_ucast_cache.c b/opensm/opensm/osm_ucast_cache.c index 6d3c53e..31a5333 100644 --- a/opensm/opensm/osm_ucast_cache.c +++ b/opensm/opensm/osm_ucast_cache.c @@ -1079,10 +1079,10 @@ int osm_ucast_cache_process(osm_ucast_mgr_t * p_mgr) /* no new routing was recently calculated for this switch, but the LFT needs to be updated anyway */ p_sw->new_lft = p_sw->lft; - p_sw->lft = malloc(IB_LID_UCAST_END_HO + 1); + p_sw->lft = malloc(p_sw->lft_size); if (!p_sw->lft) return IB_INSUFFICIENT_MEMORY; - memset(p_sw->lft, OSM_NO_PATH, IB_LID_UCAST_END_HO + 1); + memset(p_sw->lft, OSM_NO_PATH, p_sw->lft_size); } } diff --git a/opensm/opensm/osm_ucast_file.c b/opensm/opensm/osm_ucast_file.c index 5b73ca5..7c1b5ba 100644 --- a/opensm/opensm/osm_ucast_file.c +++ b/opensm/opensm/osm_ucast_file.c @@ -193,8 +193,7 @@ static int do_ucast_file_load(void *context) cl_ntoh64(sw_guid)); continue; } - memset(p_sw->new_lft, OSM_NO_PATH, - IB_LID_UCAST_END_HO + 1); + memset(p_sw->new_lft, OSM_NO_PATH, p_sw->lft_size); } else if (p_sw && !strncmp(p, "0x", 2)) { p += 2; lid = (uint16_t) strtoul(p, &q, 16); diff --git a/opensm/opensm/osm_ucast_ftree.c b/opensm/opensm/osm_ucast_ftree.c index 1defd95..885c834 100644 --- a/opensm/opensm/osm_ucast_ftree.c +++ b/opensm/opensm/osm_ucast_ftree.c @@ -566,7 +566,7 @@ static ftree_sw_t *sw_create(IN ftree_fabric_t * p_ftree, return NULL; /* initialize lft buffer */ - memset(p_osm_sw->new_lft, OSM_NO_PATH, IB_LID_UCAST_END_HO + 1); + memset(p_osm_sw->new_lft, OSM_NO_PATH, p_osm_sw->lft_size); p_sw->hops = malloc((p_osm_sw->max_lid_ho + 1) * sizeof(*(p_sw->hops))); if (p_sw->hops == NULL) return NULL; diff --git a/opensm/opensm/osm_ucast_lash.c b/opensm/opensm/osm_ucast_lash.c index 8b0a190..8015226 100644 --- a/opensm/opensm/osm_ucast_lash.c +++ b/opensm/opensm/osm_ucast_lash.c @@ -994,7 +994,7 @@ static void populate_fwd_tbls(lash_t * p_lash) p_next_sw = (osm_switch_t *) cl_qmap_head(&p_subn->sw_guid_tbl); - /* Go through each swtich individually */ + /* Go through each switch individually */ while (p_next_sw != (osm_switch_t *) cl_qmap_end(&p_subn->sw_guid_tbl)) { uint64_t current_guid; switch_t *sw; @@ -1005,7 +1005,7 @@ static void populate_fwd_tbls(lash_t * p_lash) current_guid = p_sw->p_node->node_info.port_guid; sw = p_sw->priv; - memset(p_sw->new_lft, OSM_NO_PATH, IB_LID_UCAST_END_HO + 1); + memset(p_sw->new_lft, OSM_NO_PATH, p_sw->lft_size); for (lid = 1; lid <= max_lid_ho; lid++) { port = cl_ptr_vector_get(&p_subn->port_lid_tbl, lid); diff --git a/opensm/opensm/osm_ucast_mgr.c b/opensm/opensm/osm_ucast_mgr.c index be37df9..d0e85b1 100644 --- a/opensm/opensm/osm_ucast_mgr.c +++ b/opensm/opensm/osm_ucast_mgr.c @@ -372,7 +372,7 @@ static void ucast_mgr_process_tbl(IN cl_map_item_t * p_map_item, cl_ntoh64(osm_node_get_node_guid(p_sw->p_node))); /* Initialize LIDs in buffer to invalid port number. */ - memset(p_sw->new_lft, OSM_NO_PATH, IB_LID_UCAST_END_HO + 1); + memset(p_sw->new_lft, OSM_NO_PATH, p_sw->max_lid_ho + 1); if (p_mgr->p_subn->opt.lmc) alloc_ports_priv(p_mgr);

[PATCHv4] opensm: Reduce heap consumption by unicast routing tables (LFTs)

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