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test/nvme_reset: Replace next pointer by TAILQ and a few cleanup

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Using TAILQ instead of next pointer will make the object relationship
cleaner and the asynchronous detach opearation easier to implement.

Besides, do the following minor clean up.

Rename g_workers by g_worker and register_workers() by register_worker()
because it holds only a single instance, and clean up references to g_worker.

To fix memory leak at cleanup, add unregister_worker() to free a worker
and its associated contexts.

The prefix, spdk_reset, was not necessary as function name. Rename
spdk_reset_free_tasks() by free_tasks().

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I0da11108222491e3290ffa5e405eb3ebe70a91bc
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4435
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
This commit is contained in:
Shuhei Matsumoto 2020-09-28 10:49:25 +09:00 committed by Tomasz Zawadzki
parent 57a4b0f179
commit ba079831a2
1 changed files with 61 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
test/nvme/reset/reset.c
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@ -40,14 +40,14 @@
struct ctrlr_entry { struct ctrlr_entry {
struct spdk_nvme_ctrlr *ctrlr; struct spdk_nvme_ctrlr *ctrlr;
struct ctrlr_entry *next; TAILQ_ENTRY(ctrlr_entry) link;
char name[1024]; char name[1024];
}; };
struct ns_entry { struct ns_entry {
struct spdk_nvme_ns *ns; struct spdk_nvme_ns *ns;
struct spdk_nvme_ctrlr *ctrlr; struct spdk_nvme_ctrlr *ctrlr;
struct ns_entry *next; TAILQ_ENTRY(ns_entry) link;
uint32_t io_size_blocks; uint32_t io_size_blocks;
uint64_t size_in_ios; uint64_t size_in_ios;
char name[1024]; char name[1024];
@ -63,7 +63,7 @@ struct ns_worker_ctx {
uint64_t offset_in_ios; uint64_t offset_in_ios;
bool is_draining; bool is_draining;
struct ns_worker_ctx *next; TAILQ_ENTRY(ns_worker_ctx) link;
}; };
struct reset_task { struct reset_task {
@ -72,16 +72,16 @@ struct reset_task {
}; };
struct worker_thread { struct worker_thread {
struct ns_worker_ctx *ns_ctx; TAILQ_HEAD(, ns_worker_ctx) ns_ctx;
unsigned lcore; unsigned lcore;
}; };
static struct spdk_mempool *task_pool; static struct spdk_mempool *task_pool;
static struct ctrlr_entry *g_controllers = NULL; static TAILQ_HEAD(, ctrlr_entry) g_controllers = TAILQ_HEAD_INITIALIZER(g_controllers);
static struct ns_entry *g_namespaces = NULL; static TAILQ_HEAD(, ns_entry) g_namespaces = TAILQ_HEAD_INITIALIZER(g_namespaces);
static int g_num_namespaces = 0; static int g_num_namespaces = 0;
static struct worker_thread *g_workers = NULL; static struct worker_thread *g_worker = NULL;
static bool g_qemu_ssd_found = false; static bool g_qemu_ssd_found = false;
static uint64_t g_tsc_rate; static uint64_t g_tsc_rate;
@ -122,8 +122,7 @@ register_ns(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_ns *ns)
snprintf(entry->name, 44, "%-20.20s (%-20.20s)", cdata->mn, cdata->sn); snprintf(entry->name, 44, "%-20.20s (%-20.20s)", cdata->mn, cdata->sn);
g_num_namespaces++; g_num_namespaces++;
entry->next = g_namespaces; TAILQ_INSERT_TAIL(&g_namespaces, entry, link);
g_namespaces = entry;
} }
static void static void
@ -139,8 +138,7 @@ register_ctrlr(struct spdk_nvme_ctrlr *ctrlr)
} }
entry->ctrlr = ctrlr; entry->ctrlr = ctrlr;
entry->next = g_controllers; TAILQ_INSERT_TAIL(&g_controllers, entry, link);
g_controllers = entry;
num_ns = spdk_nvme_ctrlr_get_num_ns(ctrlr); num_ns = spdk_nvme_ctrlr_get_num_ns(ctrlr);
for (nsid = 1; nsid <= num_ns; nsid++) { for (nsid = 1; nsid <= num_ns; nsid++) {
@ -275,26 +273,22 @@ work_fn(void *arg)
printf("Starting thread on core %u\n", worker->lcore); printf("Starting thread on core %u\n", worker->lcore);
/* Submit initial I/O for each namespace. */ /* Submit initial I/O for each namespace. */
ns_ctx = worker->ns_ctx; TAILQ_FOREACH(ns_ctx, &worker->ns_ctx, link) {
while (ns_ctx != NULL) {
ns_ctx->qpair = spdk_nvme_ctrlr_alloc_io_qpair(ns_ctx->entry->ctrlr, NULL, 0); ns_ctx->qpair = spdk_nvme_ctrlr_alloc_io_qpair(ns_ctx->entry->ctrlr, NULL, 0);
if (ns_ctx->qpair == NULL) { if (ns_ctx->qpair == NULL) {
fprintf(stderr, "spdk_nvme_ctrlr_alloc_io_qpair() failed on core %u\n", worker->lcore); fprintf(stderr, "spdk_nvme_ctrlr_alloc_io_qpair() failed on core %u\n", worker->lcore);
return -1; return -1;
} }
submit_io(ns_ctx, g_queue_depth); submit_io(ns_ctx, g_queue_depth);
ns_ctx = ns_ctx->next;
} }
while (1) { while (1) {
if (!did_reset && ((tsc_end - spdk_get_ticks()) / g_tsc_rate) > (uint64_t)g_time_in_sec / 2) { if (!did_reset && ((tsc_end - spdk_get_ticks()) / g_tsc_rate) > (uint64_t)g_time_in_sec / 2) {
ns_ctx = worker->ns_ctx; TAILQ_FOREACH(ns_ctx, &worker->ns_ctx, link) {
while (ns_ctx != NULL) {
if (spdk_nvme_ctrlr_reset(ns_ctx->entry->ctrlr) < 0) { if (spdk_nvme_ctrlr_reset(ns_ctx->entry->ctrlr) < 0) {
fprintf(stderr, "nvme reset failed.\n"); fprintf(stderr, "nvme reset failed.\n");
return -1; return -1;
} }
ns_ctx = ns_ctx->next;
} }
did_reset = true; did_reset = true;
} }
@ -304,10 +298,8 @@ work_fn(void *arg)
* I/O will be submitted in the io_complete callback * I/O will be submitted in the io_complete callback
* to replace each I/O that is completed. * to replace each I/O that is completed.
*/ */
ns_ctx = worker->ns_ctx; TAILQ_FOREACH(ns_ctx, &worker->ns_ctx, link) {
while (ns_ctx != NULL) {
check_io(ns_ctx); check_io(ns_ctx);
ns_ctx = ns_ctx->next;
} }
if (spdk_get_ticks() > tsc_end) { if (spdk_get_ticks() > tsc_end) {
@ -315,11 +307,9 @@ work_fn(void *arg)
} }
} }
ns_ctx = worker->ns_ctx; TAILQ_FOREACH(ns_ctx, &worker->ns_ctx, link) {
while (ns_ctx != NULL) {
drain_io(ns_ctx); drain_io(ns_ctx);
spdk_nvme_ctrlr_free_io_qpair(ns_ctx->qpair); spdk_nvme_ctrlr_free_io_qpair(ns_ctx->qpair);
ns_ctx = ns_ctx->next;
} }
return 0; return 0;
@ -351,16 +341,14 @@ print_stats(void)
total_submitted_io = 0; total_submitted_io = 0;
total_completed_err_io = 0; total_completed_err_io = 0;
worker = g_workers; worker = g_worker;
ns_ctx = worker->ns_ctx; TAILQ_FOREACH(ns_ctx, &worker->ns_ctx, link) {
while (ns_ctx) {
io_completed = ns_ctx->io_completed; io_completed = ns_ctx->io_completed;
io_submitted = ns_ctx->io_submitted; io_submitted = ns_ctx->io_submitted;
io_completed_error = ns_ctx->io_completed_error; io_completed_error = ns_ctx->io_completed_error;
total_completed_io += io_completed; total_completed_io += io_completed;
total_submitted_io += io_submitted; total_submitted_io += io_submitted;
total_completed_err_io += io_completed_error; total_completed_err_io += io_completed_error;
ns_ctx = ns_ctx->next;
} }
printf("========================================================\n"); printf("========================================================\n");
@ -497,7 +485,7 @@ parse_args(int argc, char **argv)
} }
static int static int
register_workers(void) register_worker(void)
{ {
struct worker_thread *worker; struct worker_thread *worker;
@ -508,9 +496,10 @@ register_workers(void)
} }
memset(worker, 0, sizeof(struct worker_thread)); memset(worker, 0, sizeof(struct worker_thread));
TAILQ_INIT(&worker->ns_ctx);
worker->lcore = spdk_env_get_current_core(); worker->lcore = spdk_env_get_current_core();
g_workers = worker; g_worker = worker;
return 0; return 0;
} }
@ -563,21 +552,20 @@ register_controllers(void)
static void static void
unregister_controllers(void) unregister_controllers(void)
{ {
struct ctrlr_entry *entry = g_controllers; struct ctrlr_entry *entry, *tmp;
while (entry) { TAILQ_FOREACH_SAFE(entry, &g_controllers, link, tmp) {
struct ctrlr_entry *next = entry->next; TAILQ_REMOVE(&g_controllers, entry, link);
spdk_nvme_detach(entry->ctrlr); spdk_nvme_detach(entry->ctrlr);
free(entry); free(entry);
entry = next;
} }
} }
static int static int
associate_workers_with_ns(void) associate_workers_with_ns(void)
{ {
struct ns_entry *entry = g_namespaces; struct ns_entry *entry = TAILQ_FIRST(&g_namespaces);
struct worker_thread *worker = g_workers; struct worker_thread *worker = g_worker;
struct ns_worker_ctx *ns_ctx; struct ns_worker_ctx *ns_ctx;
int i, count; int i, count;
@ -595,27 +583,40 @@ associate_workers_with_ns(void)
printf("Associating %s with lcore %d\n", entry->name, worker->lcore); printf("Associating %s with lcore %d\n", entry->name, worker->lcore);
ns_ctx->entry = entry; ns_ctx->entry = entry;
ns_ctx->next = worker->ns_ctx; TAILQ_INSERT_TAIL(&worker->ns_ctx, ns_ctx, link);
worker->ns_ctx = ns_ctx;
worker = g_workers; entry = TAILQ_NEXT(entry, link);;
entry = entry->next;
if (entry == NULL) { if (entry == NULL) {
entry = g_namespaces; entry = TAILQ_FIRST(&g_namespaces);
} }
} }
return 0; return 0;
} }
static void
unregister_worker(void)
{
struct ns_worker_ctx *ns_ctx, *tmp;
assert(g_worker != NULL);
TAILQ_FOREACH_SAFE(ns_ctx, &g_worker->ns_ctx, link, tmp) {
TAILQ_REMOVE(&g_worker->ns_ctx, ns_ctx, link);
free(ns_ctx);
}
free(g_worker);
g_worker = NULL;
}
static int static int
run_nvme_reset_cycle(void) run_nvme_reset_cycle(void)
{ {
struct worker_thread *worker; struct worker_thread *worker = g_worker;
struct ns_worker_ctx *ns_ctx; struct ns_worker_ctx *ns_ctx;
if (work_fn(g_workers) != 0) { if (work_fn(worker) != 0) {
return -1; return -1;
} }
@ -623,21 +624,18 @@ run_nvme_reset_cycle(void)
return -1; return -1;
} }
worker = g_workers; TAILQ_FOREACH(ns_ctx, &worker->ns_ctx, link) {
ns_ctx = worker->ns_ctx;
while (ns_ctx != NULL) {
ns_ctx->io_completed = 0; ns_ctx->io_completed = 0;
ns_ctx->io_completed_error = 0; ns_ctx->io_completed_error = 0;
ns_ctx->io_submitted = 0; ns_ctx->io_submitted = 0;
ns_ctx->is_draining = false; ns_ctx->is_draining = false;
ns_ctx = ns_ctx->next;
} }
return 0; return 0;
} }
static void static void
spdk_reset_free_tasks(void) free_tasks(void)
{ {
if (spdk_mempool_count(task_pool) != TASK_POOL_NUM) { if (spdk_mempool_count(task_pool) != TASK_POOL_NUM) {
fprintf(stderr, "task_pool count is %zu but should be %d\n", fprintf(stderr, "task_pool count is %zu but should be %d\n",
@ -671,7 +669,7 @@ int main(int argc, char **argv)
return 1; return 1;
} }
if (!g_controllers) { if (TAILQ_EMPTY(&g_controllers)) {
printf("No NVMe controller found, %s exiting\n", argv[0]); printf("No NVMe controller found, %s exiting\n", argv[0]);
return g_qemu_ssd_found ? 0 : 1; return g_qemu_ssd_found ? 0 : 1;
} }
@ -686,7 +684,7 @@ int main(int argc, char **argv)
g_tsc_rate = spdk_get_ticks_hz(); g_tsc_rate = spdk_get_ticks_hz();
if (register_workers() != 0) { if (register_worker() != 0) {
return 1; return 1;
} }
@ -705,8 +703,9 @@ int main(int argc, char **argv)
} }
cleanup: cleanup:
unregister_worker();
unregister_controllers(); unregister_controllers();
spdk_reset_free_tasks(); free_tasks();
if (rc != 0) { if (rc != 0) {
fprintf(stderr, "%s: errors occured\n", argv[0]); fprintf(stderr, "%s: errors occured\n", argv[0]);