opensm SA DB dump/restore: dump SA DB only if modified

index dad3142..35684cc 100644
@@ -125,6 +125,7 @@ typedef struct osm_sa {
 	atomic32_t sa_trans_id;
 	osm_sa_mad_ctrl_t mad_ctrl;
 	cl_timer_t sr_timer;
+	boolean_t dirty;
 	cl_disp_reg_handle_t cpi_disp_h;
 	cl_disp_reg_handle_t nr_disp_h;
 	cl_disp_reg_handle_t pir_disp_h;

@@ -178,6 +179,10 @@ typedef struct osm_sa {
 *	mad_ctrl
 *		Mad Controller
 *
+*	dirty
+*		A flag that denotes that SA DB is dirty and needs
+*		to be written to the dump file (if dumping is enabled)
+*
 * SEE ALSO
 *	SM object
 *********/

index c69ef7a..9155297 100644
@@ -258,6 +258,7 @@ void osm_infr_insert_to_db(IN osm_subn_t * p_subn, IN osm_log_t * p_log,
 #endif
 
 	cl_qlist_insert_head(&p_subn->sa_infr_list, &p_infr->list_item);
+	p_subn->p_osm->sa.dirty = TRUE;
 
 	OSM_LOG(p_log, OSM_LOG_DEBUG, "Dump after insertion (size %d)\n",
 		cl_qlist_count(&p_subn->sa_infr_list));

@@ -283,6 +284,7 @@ void osm_infr_remove_from_db(IN osm_subn_t * p_subn, IN osm_log_t * p_log,
 			     OSM_LOG_DEBUG);
 
 	cl_qlist_remove_item(&p_subn->sa_infr_list, &p_infr->list_item);
+	p_subn->p_osm->sa.dirty = TRUE;
 
 	osm_infr_delete(p_infr);
 

index 7b7f1e0..b44e77a 100644
@@ -205,6 +205,7 @@ osm_mcm_port_t *osm_mgrp_add_port(IN osm_subn_t * subn, osm_log_t * log,
 	    ++mgrp->full_members == 1)
 		mgrp_send_notice(subn, log, mgrp, 66);
 
+	subn->p_osm->sa.dirty = TRUE;
 	return mcm_port;
 }
 

@@ -259,6 +260,8 @@ void osm_mgrp_remove_port(osm_subn_t * subn, osm_log_t * log, osm_mgrp_t * mgrp,
 		mgrp_send_notice(subn, log, mgrp, 67);
 		osm_mgrp_cleanup(subn, mgrp);
 	}
+
+	subn->p_osm->sa.dirty = TRUE;
 }
 
 void osm_mgrp_delete_port(osm_subn_t * subn, osm_log_t * log, osm_mgrp_t * mgrp,

index a5eb796..849b734 100644
@@ -719,7 +719,12 @@ static void sa_dump_all_sa(osm_opensm_t * p_osm, FILE * file)
 
 int osm_sa_db_file_dump(osm_opensm_t * p_osm)
 {
-	return opensm_dump_to_file(p_osm, "opensm-sa.dump", sa_dump_all_sa);
+	int res = 0;
+	if (p_osm->sa.dirty) {
+		res = opensm_dump_to_file(p_osm, "opensm-sa.dump", sa_dump_all_sa);
+		p_osm->sa.dirty = FALSE;
+	}
+	return res;
 }
 
 /*

index c3e105f..575cbea 100644
@@ -832,6 +832,7 @@ static ib_api_status_t mcmr_rcv_create_new_mgrp(IN osm_sa_t * sa,
 		       &(*pp_mgrp)->mcmember_rec.mgid, &(*pp_mgrp)->map_item);
 	sa->p_subn->mgroups[cl_ntoh16(mlid) - IB_LID_MCAST_START_HO] = *pp_mgrp;
 
+	sa->dirty = TRUE;
 Exit:
 	OSM_LOG_EXIT(sa->p_log);
 	return status;

@@ -958,6 +959,7 @@ static void mcmr_rcv_leave_mgrp(IN osm_sa_t * sa, IN osm_madw_t * p_madw)
 	/* remove port and/or update join state */
 	osm_mgrp_remove_port(sa->p_subn, sa->p_log, p_mgrp, p_mcm_port,
 			     &mcmember_rec);
+	sa->dirty = TRUE;
 	CL_PLOCK_RELEASE(sa->p_lock);
 
 	mcmr_rcv_respond(sa, p_madw, &mcmember_rec);

@@ -1171,6 +1173,7 @@ static void mcmr_rcv_join_mgrp(IN osm_sa_t * sa, IN osm_madw_t * p_madw)
 	if (osm_log_is_active(sa->p_log, OSM_LOG_DEBUG))
 		osm_dump_mc_record(sa->p_log, &mcmember_rec, OSM_LOG_DEBUG);
 
+	sa->dirty = TRUE;
 	mcmr_rcv_respond(sa, p_madw, &mcmember_rec);
 
 Exit:

@@ -1203,6 +1206,7 @@ static ib_api_status_t mcmr_rcv_new_mcmr(IN osm_sa_t * sa,
 	   State, Port Guid, and Proxy */
 	p_rec_item->rec = *p_rcvd_rec;
 	cl_qlist_insert_tail(p_list, &p_rec_item->list_item);
+	sa->dirty = TRUE;
 
 Exit:
 	OSM_LOG_EXIT(sa->p_log);

index a38171d..39541c9 100644
@@ -46,6 +46,7 @@
 #include <complib/cl_debug.h>
 #include <complib/cl_timer.h>
 #include <opensm/osm_service.h>
+#include <opensm/osm_opensm.h>
 
 /**********************************************************************
  **********************************************************************/

@@ -134,6 +135,7 @@ void osm_svcr_insert_to_db(IN osm_subn_t * p_subn, IN osm_log_t * p_log,
 		"Inserting new Service Record into Database\n");
 
 	cl_qlist_insert_head(&p_subn->sa_sr_list, &p_svcr->list_item);
+	p_subn->p_osm->sa.dirty = TRUE;
 
 	OSM_LOG_EXIT(p_log);
 }

@@ -149,6 +151,7 @@ void osm_svcr_remove_from_db(IN osm_subn_t * p_subn, IN osm_log_t * p_log,
 		p_svcr->service_record.service_id);
 
 	cl_qlist_remove_item(&p_subn->sa_sr_list, &p_svcr->list_item);
+	p_subn->p_osm->sa.dirty = TRUE;
 
 	OSM_LOG_EXIT(p_log);
 }