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nvmf: unregister subsystem poller on shutdown

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Clean up the poller and only then free the associated subsystem's
memory.  This prepares for future dynamic subsystem creation/deletion.

Change-Id: I9e56cbf8822814930fdbb662095c51b6ad40fbc4
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Daniel Verkamp 2016-08-15 10:37:46 -07:00
parent 2641c31af2
commit 759dbf46d8
2 changed files with 45 additions and 7 deletions
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34
lib/nvmf/subsystem.c
View File

@ -128,17 +128,16 @@ nvmf_create_subsystem(int num, const char *name,
return subsystem;
}
int
nvmf_delete_subsystem(struct spdk_nvmf_subsystem *subsystem)
static void
nvmf_delete_subsystem_poller_unreg(struct spdk_event *event)
{
struct spdk_nvmf_subsystem *subsystem = spdk_event_get_arg1(event);
struct spdk_nvmf_listen_addr *listen_addr, *listen_addr_tmp;
struct spdk_nvmf_host *host, *host_tmp;
if (subsystem == NULL) {
SPDK_TRACELOG(SPDK_TRACE_NVMF,
"nvmf_delete_subsystem: there is no subsystem\n");
return 0;
}
/*
* The poller has been unregistered, so now the memory can be freed.
*/
TAILQ_FOREACH_SAFE(listen_addr, &subsystem->listen_addrs, link, listen_addr_tmp) {
TAILQ_REMOVE(&subsystem->listen_addrs, listen_addr, link);
@ -166,6 +165,27 @@ nvmf_delete_subsystem(struct spdk_nvmf_subsystem *subsystem)
TAILQ_REMOVE(&g_subsystems, subsystem, entries);
free(subsystem);
}
int
nvmf_delete_subsystem(struct spdk_nvmf_subsystem *subsystem)
{
struct spdk_event *event;
if (subsystem == NULL) {
SPDK_TRACELOG(SPDK_TRACE_NVMF,
"nvmf_delete_subsystem: there is no subsystem\n");
return 0;
}
/*
* Unregister the poller - this starts a chain of events that will eventually free
* the subsystem's memory.
*/
event = spdk_event_allocate(spdk_app_get_current_core(), nvmf_delete_subsystem_poller_unreg,
subsystem, NULL, NULL);
spdk_poller_unregister(&subsystem->poller, event);
return 0;
}

18
test/lib/nvmf/subsystem/subsystem_ut.c
View File

@ -47,12 +47,30 @@ SPDK_LOG_REGISTER_TRACE_FLAG("nvmf", SPDK_TRACE_NVMF)
struct spdk_nvmf_globals g_nvmf_tgt;
uint32_t
spdk_app_get_current_core(void)
{
return 0;
}
struct spdk_event *spdk_event_allocate(uint32_t lcore, spdk_event_fn fn,
void *arg1, void *arg2,
spdk_event_t next)
{
return NULL;
}
void
spdk_poller_register(struct spdk_poller **ppoller, spdk_poller_fn fn, void *arg, uint32_t lcore,
struct spdk_event *complete, uint64_t period_microseconds)
{
}
void spdk_poller_unregister(struct spdk_poller **ppoller,
struct spdk_event *complete)
{
}
int32_t
spdk_nvme_ctrlr_process_admin_completions(struct spdk_nvme_ctrlr *ctrlr)
{