#define CACHE_QUIESCENT_PERIOD (20)
static struct ptlrpc_page_pool {
- unsigned long epp_max_pages; /* maximum pages can hold, const */
- unsigned int epp_max_pools; /* number of pools, const */
+ unsigned long ppp_max_pages; /* maximum pages can hold, const */
+ unsigned int ppp_max_pools; /* number of pools, const */
/*
* wait queue in case of not enough free pages.
*/
- wait_queue_head_t epp_waitq; /* waiting threads */
- unsigned int epp_waitqlen; /* wait queue length */
- unsigned long epp_pages_short; /* # of pages wanted of in-q users */
- unsigned int epp_growing:1; /* during adding pages */
+ wait_queue_head_t ppp_waitq; /* waiting threads */
+ unsigned int ppp_waitqlen; /* wait queue length */
+ unsigned long ppp_pages_short; /* # of pages wanted of in-q users */
+ unsigned int ppp_growing:1; /* during adding pages */
/*
* indicating how idle the pools are, from 0 to MAX_IDLE_IDX
* is idled for a while but the idle_idx might still be low if no
* activities happened in the pools.
*/
- unsigned long epp_idle_idx;
+ unsigned long ppp_idle_idx;
/* last shrink time due to mem tight */
- time64_t epp_last_shrink;
- time64_t epp_last_access;
+ time64_t ppp_last_shrink;
+ time64_t ppp_last_access;
/* in-pool pages bookkeeping */
- spinlock_t epp_lock; /* protect following fields */
- unsigned long epp_total_pages; /* total pages in pools */
- unsigned long epp_free_pages; /* current pages available */
+ spinlock_t ppp_lock; /* protect following fields */
+ unsigned long ppp_total_pages; /* total pages in pools */
+ unsigned long ppp_free_pages; /* current pages available */
/* statistics */
- unsigned long epp_st_max_pages; /* # of pages ever reached */
- unsigned int epp_st_grows; /* # of grows */
- unsigned int epp_st_grow_fails; /* # of add pages failures */
- unsigned int epp_st_shrinks; /* # of shrinks */
- unsigned long epp_st_access; /* # of access */
- unsigned long epp_st_missings; /* # of cache missing */
- unsigned long epp_st_lowfree; /* lowest free pages reached */
- unsigned int epp_st_max_wqlen; /* highest waitqueue length */
- ktime_t epp_st_max_wait; /* in nanoseconds */
- unsigned long epp_st_outofmem; /* # of out of mem requests */
+ unsigned long ppp_st_max_pages; /* # of pages ever reached */
+ unsigned int ppp_st_grows; /* # of grows */
+ unsigned int ppp_st_grow_fails; /* # of add pages failures */
+ unsigned int ppp_st_shrinks; /* # of shrinks */
+ unsigned long ppp_st_access; /* # of access */
+ unsigned long ppp_st_missings; /* # of cache missing */
+ unsigned long ppp_st_lowfree; /* lowest free pages reached */
+ unsigned int ppp_st_max_wqlen; /* highest waitqueue length */
+ ktime_t ppp_st_max_wait; /* in nanoseconds */
+ unsigned long ppp_st_outofmem; /* # of out of mem requests */
/*
* pointers to pools, may be vmalloc'd
*/
- void ***epp_pools;
+ void ***ppp_pools;
/*
* memory shrinker
*/
*/
int encrypt_page_pools_seq_show(struct seq_file *m, void *v)
{
- spin_lock(&page_pools[PAGES_POOL]->epp_lock);
+ spin_lock(&page_pools[PAGES_POOL]->ppp_lock);
seq_printf(m, "physical pages: %lu\n"
"pages per pool: %lu\n"
"max pages: %lu\n"
"max wait time ms: %lld\n"
"out of mem: %lu\n",
cfs_totalram_pages(), PAGES_PER_POOL,
- page_pools[PAGES_POOL]->epp_max_pages,
- page_pools[PAGES_POOL]->epp_max_pools,
- page_pools[PAGES_POOL]->epp_total_pages,
- page_pools[PAGES_POOL]->epp_free_pages,
- page_pools[PAGES_POOL]->epp_idle_idx,
- ktime_get_seconds() - page_pools[PAGES_POOL]->epp_last_shrink,
- ktime_get_seconds() - page_pools[PAGES_POOL]->epp_last_access,
- page_pools[PAGES_POOL]->epp_st_max_pages,
- page_pools[PAGES_POOL]->epp_st_grows,
- page_pools[PAGES_POOL]->epp_st_grow_fails,
- page_pools[PAGES_POOL]->epp_st_shrinks,
- page_pools[PAGES_POOL]->epp_st_access,
- page_pools[PAGES_POOL]->epp_st_missings,
- page_pools[PAGES_POOL]->epp_st_lowfree,
- page_pools[PAGES_POOL]->epp_st_max_wqlen,
- ktime_to_ms(page_pools[PAGES_POOL]->epp_st_max_wait),
- page_pools[PAGES_POOL]->epp_st_outofmem);
- spin_unlock(&page_pools[PAGES_POOL]->epp_lock);
+ page_pools[PAGES_POOL]->ppp_max_pages,
+ page_pools[PAGES_POOL]->ppp_max_pools,
+ page_pools[PAGES_POOL]->ppp_total_pages,
+ page_pools[PAGES_POOL]->ppp_free_pages,
+ page_pools[PAGES_POOL]->ppp_idle_idx,
+ ktime_get_seconds() - page_pools[PAGES_POOL]->ppp_last_shrink,
+ ktime_get_seconds() - page_pools[PAGES_POOL]->ppp_last_access,
+ page_pools[PAGES_POOL]->ppp_st_max_pages,
+ page_pools[PAGES_POOL]->ppp_st_grows,
+ page_pools[PAGES_POOL]->ppp_st_grow_fails,
+ page_pools[PAGES_POOL]->ppp_st_shrinks,
+ page_pools[PAGES_POOL]->ppp_st_access,
+ page_pools[PAGES_POOL]->ppp_st_missings,
+ page_pools[PAGES_POOL]->ppp_st_lowfree,
+ page_pools[PAGES_POOL]->ppp_st_max_wqlen,
+ ktime_to_ms(page_pools[PAGES_POOL]->ppp_st_max_wait),
+ page_pools[PAGES_POOL]->ppp_st_outofmem);
+ spin_unlock(&page_pools[PAGES_POOL]->ppp_lock);
return 0;
}
for (pool_index = 0; pool_index < POOLS_COUNT; pool_index++) {
pool = page_pools[pool_index];
- if (!pool->epp_st_access)
+ if (!pool->ppp_st_access)
continue;
- spin_lock(&pool->epp_lock);
+ spin_lock(&pool->ppp_lock);
seq_printf(m, " pool_%luk:\n"
" max_pages: %lu\n"
" max_pools: %u\n"
" out_of_mem: %lu\n",
(pool_index ? ELEMENT_SIZE(pool_index - 10) :
PAGE_SIZE >> 10),
- pool->epp_max_pages,
- pool->epp_max_pools,
- pool->epp_total_pages,
- pool->epp_free_pages,
- pool->epp_idle_idx,
- ktime_get_seconds() - pool->epp_last_shrink,
- ktime_get_seconds() - pool->epp_last_access,
- pool->epp_st_max_pages,
- pool->epp_st_grows,
- pool->epp_st_grow_fails,
- pool->epp_st_shrinks,
- pool->epp_st_access,
- pool->epp_st_missings,
- pool->epp_st_lowfree,
- pool->epp_st_max_wqlen,
- ktime_to_ms(pool->epp_st_max_wait),
- pool->epp_st_outofmem);
-
- spin_unlock(&pool->epp_lock);
+ pool->ppp_max_pages,
+ pool->ppp_max_pools,
+ pool->ppp_total_pages,
+ pool->ppp_free_pages,
+ pool->ppp_idle_idx,
+ ktime_get_seconds() - pool->ppp_last_shrink,
+ ktime_get_seconds() - pool->ppp_last_access,
+ pool->ppp_st_max_pages,
+ pool->ppp_st_grows,
+ pool->ppp_st_grow_fails,
+ pool->ppp_st_shrinks,
+ pool->ppp_st_access,
+ pool->ppp_st_missings,
+ pool->ppp_st_lowfree,
+ pool->ppp_st_max_wqlen,
+ ktime_to_ms(pool->ppp_st_max_wait),
+ pool->ppp_st_outofmem);
+
+ spin_unlock(&pool->ppp_lock);
}
return 0;
}
struct ptlrpc_page_pool *pool = page_pools[pool_idx];
LASSERT(npages > 0);
- LASSERT(npages <= pool->epp_free_pages);
- LASSERT(pool->epp_free_pages <= pool->epp_total_pages);
+ LASSERT(npages <= pool->ppp_free_pages);
+ LASSERT(pool->ppp_free_pages <= pool->ppp_total_pages);
/* max pool index before the release */
- p_idx_max2 = (pool->epp_total_pages - 1) / PAGES_PER_POOL;
+ p_idx_max2 = (pool->ppp_total_pages - 1) / PAGES_PER_POOL;
- pool->epp_free_pages -= npages;
- pool->epp_total_pages -= npages;
+ pool->ppp_free_pages -= npages;
+ pool->ppp_total_pages -= npages;
/* max pool index after the release */
- p_idx_max1 = pool->epp_total_pages == 0 ? -1 :
- ((pool->epp_total_pages - 1) / PAGES_PER_POOL);
+ p_idx_max1 = pool->ppp_total_pages == 0 ? -1 :
+ ((pool->ppp_total_pages - 1) / PAGES_PER_POOL);
- p_idx = pool->epp_free_pages / PAGES_PER_POOL;
- g_idx = pool->epp_free_pages % PAGES_PER_POOL;
- LASSERT(pool->epp_pools[p_idx]);
+ p_idx = pool->ppp_free_pages / PAGES_PER_POOL;
+ g_idx = pool->ppp_free_pages % PAGES_PER_POOL;
+ LASSERT(pool->ppp_pools[p_idx]);
while (npages--) {
- LASSERT(pool->epp_pools[p_idx]);
- LASSERT(pool->epp_pools[p_idx][g_idx] != NULL);
+ LASSERT(pool->ppp_pools[p_idx]);
+ LASSERT(pool->ppp_pools[p_idx][g_idx] != NULL);
if (pool_idx == PAGES_POOL)
- __free_page(pool->epp_pools[p_idx][g_idx]);
+ __free_page(pool->ppp_pools[p_idx][g_idx]);
else
- OBD_FREE_LARGE(pool->epp_pools[p_idx][g_idx],
+ OBD_FREE_LARGE(pool->ppp_pools[p_idx][g_idx],
ELEMENT_SIZE(pool_idx));
- pool->epp_pools[p_idx][g_idx] = NULL;
+ pool->ppp_pools[p_idx][g_idx] = NULL;
if (++g_idx == PAGES_PER_POOL) {
p_idx++;
/* free unused pools */
while (p_idx_max1 < p_idx_max2) {
- LASSERT(pool->epp_pools[p_idx_max2]);
- OBD_FREE(pool->epp_pools[p_idx_max2], PAGE_SIZE);
- pool->epp_pools[p_idx_max2] = NULL;
+ LASSERT(pool->ppp_pools[p_idx_max2]);
+ OBD_FREE(pool->ppp_pools[p_idx_max2], PAGE_SIZE);
+ pool->ppp_pools[p_idx_max2] = NULL;
p_idx_max2--;
}
}
* if no pool access for a long time, we consider it's fully
* idle. A little race here is fine.
*/
- if (unlikely(ktime_get_seconds() - pool->epp_last_access >
+ if (unlikely(ktime_get_seconds() - pool->ppp_last_access >
CACHE_QUIESCENT_PERIOD)) {
- spin_lock(&pool->epp_lock);
- pool->epp_idle_idx = IDLE_IDX_MAX;
- spin_unlock(&pool->epp_lock);
+ spin_lock(&pool->ppp_lock);
+ pool->ppp_idle_idx = IDLE_IDX_MAX;
+ spin_unlock(&pool->ppp_lock);
}
- LASSERT(pool->epp_idle_idx <= IDLE_IDX_MAX);
+ LASSERT(pool->ppp_idle_idx <= IDLE_IDX_MAX);
- return (pool->epp_free_pages <= PTLRPC_MAX_BRW_PAGES) ? 0 :
- (pool->epp_free_pages - PTLRPC_MAX_BRW_PAGES) *
- (IDLE_IDX_MAX - pool->epp_idle_idx) / IDLE_IDX_MAX;
+ return (pool->ppp_free_pages <= PTLRPC_MAX_BRW_PAGES) ? 0 :
+ (pool->ppp_free_pages - PTLRPC_MAX_BRW_PAGES) *
+ (IDLE_IDX_MAX - pool->ppp_idle_idx) / IDLE_IDX_MAX;
}
/*
unsigned int pool_index = SEEKS_TO_INDEX(s);
struct ptlrpc_page_pool *pool = page_pools[pool_index];
- spin_lock(&pool->epp_lock);
- if (pool->epp_free_pages <= PTLRPC_MAX_BRW_PAGES)
+ spin_lock(&pool->ppp_lock);
+ if (pool->ppp_free_pages <= PTLRPC_MAX_BRW_PAGES)
sc->nr_to_scan = 0;
else
sc->nr_to_scan = min_t(unsigned long, sc->nr_to_scan,
- pool->epp_free_pages - PTLRPC_MAX_BRW_PAGES);
+ pool->ppp_free_pages - PTLRPC_MAX_BRW_PAGES);
if (sc->nr_to_scan > 0) {
pools_release_free_pages(sc->nr_to_scan, pool_index);
CDEBUG(D_SEC, "released %ld pages, %ld left\n",
- (long)sc->nr_to_scan, pool->epp_free_pages);
+ (long)sc->nr_to_scan, pool->ppp_free_pages);
- pool->epp_st_shrinks++;
- pool->epp_last_shrink = ktime_get_seconds();
+ pool->ppp_st_shrinks++;
+ pool->ppp_last_shrink = ktime_get_seconds();
}
- spin_unlock(&pool->epp_lock);
+ spin_unlock(&pool->ppp_lock);
/*
* if no pool access for a long time, we consider it's fully idle.
* a little race here is fine.
*/
- if (unlikely(ktime_get_seconds() - pool->epp_last_access >
+ if (unlikely(ktime_get_seconds() - pool->ppp_last_access >
CACHE_QUIESCENT_PERIOD)) {
- spin_lock(&pool->epp_lock);
- pool->epp_idle_idx = IDLE_IDX_MAX;
- spin_unlock(&pool->epp_lock);
+ spin_lock(&pool->ppp_lock);
+ pool->ppp_idle_idx = IDLE_IDX_MAX;
+ spin_unlock(&pool->ppp_lock);
}
- LASSERT(pool->epp_idle_idx <= IDLE_IDX_MAX);
+ LASSERT(pool->ppp_idle_idx <= IDLE_IDX_MAX);
return sc->nr_to_scan;
}
struct ptlrpc_page_pool *page_pool = page_pools[pool_idx];
LASSERT(npages > 0);
- LASSERT(page_pool->epp_total_pages+npages <= page_pool->epp_max_pages);
+ LASSERT(page_pool->ppp_total_pages+npages <= page_pool->ppp_max_pages);
LASSERT(npages_to_npools(npages) == npools);
- LASSERT(page_pool->epp_growing);
+ LASSERT(page_pool->ppp_growing);
- spin_lock(&page_pool->epp_lock);
+ spin_lock(&page_pool->ppp_lock);
/*
* (1) fill all the free slots of current pools.
* free slots are those left by rent pages, and the extra ones with
* index >= total_pages, locate at the tail of last pool.
*/
- freeslot = page_pool->epp_total_pages % PAGES_PER_POOL;
+ freeslot = page_pool->ppp_total_pages % PAGES_PER_POOL;
if (freeslot != 0)
freeslot = PAGES_PER_POOL - freeslot;
- freeslot += page_pool->epp_total_pages - page_pool->epp_free_pages;
+ freeslot += page_pool->ppp_total_pages - page_pool->ppp_free_pages;
- op_idx = page_pool->epp_free_pages / PAGES_PER_POOL;
- og_idx = page_pool->epp_free_pages % PAGES_PER_POOL;
+ op_idx = page_pool->ppp_free_pages / PAGES_PER_POOL;
+ og_idx = page_pool->ppp_free_pages % PAGES_PER_POOL;
np_idx = npools - 1;
ng_idx = (npages - 1) % PAGES_PER_POOL;
while (freeslot) {
- LASSERT(page_pool->epp_pools[op_idx][og_idx] == NULL);
+ LASSERT(page_pool->ppp_pools[op_idx][og_idx] == NULL);
LASSERT(pools[np_idx][ng_idx] != NULL);
- page_pool->epp_pools[op_idx][og_idx] = pools[np_idx][ng_idx];
+ page_pool->ppp_pools[op_idx][og_idx] = pools[np_idx][ng_idx];
pools[np_idx][ng_idx] = NULL;
freeslot--;
/*
* (2) add pools if needed.
*/
- cur_npools = (page_pool->epp_total_pages + PAGES_PER_POOL - 1) /
+ cur_npools = (page_pool->ppp_total_pages + PAGES_PER_POOL - 1) /
PAGES_PER_POOL;
- end_npools = (page_pool->epp_total_pages + npages +
+ end_npools = (page_pool->ppp_total_pages + npages +
PAGES_PER_POOL - 1) / PAGES_PER_POOL;
- LASSERT(end_npools <= page_pool->epp_max_pools);
+ LASSERT(end_npools <= page_pool->ppp_max_pools);
np_idx = 0;
while (cur_npools < end_npools) {
- LASSERT(page_pool->epp_pools[cur_npools] == NULL);
+ LASSERT(page_pool->ppp_pools[cur_npools] == NULL);
LASSERT(np_idx < npools);
LASSERT(pools[np_idx] != NULL);
- page_pool->epp_pools[cur_npools++] = pools[np_idx];
+ page_pool->ppp_pools[cur_npools++] = pools[np_idx];
pools[np_idx++] = NULL;
}
pools[np_idx++] = NULL;
}
- page_pool->epp_total_pages += npages;
- page_pool->epp_free_pages += npages;
- page_pool->epp_st_lowfree = page_pool->epp_free_pages;
+ page_pool->ppp_total_pages += npages;
+ page_pool->ppp_free_pages += npages;
+ page_pool->ppp_st_lowfree = page_pool->ppp_free_pages;
- if (page_pool->epp_total_pages > page_pool->epp_st_max_pages)
- page_pool->epp_st_max_pages = page_pool->epp_total_pages;
+ if (page_pool->ppp_total_pages > page_pool->ppp_st_max_pages)
+ page_pool->ppp_st_max_pages = page_pool->ppp_total_pages;
CDEBUG(D_SEC, "add %d pages to total %lu\n", npages,
- page_pool->epp_total_pages);
+ page_pool->ppp_total_pages);
- spin_unlock(&page_pool->epp_lock);
+ spin_unlock(&page_pool->ppp_lock);
}
#define POOL_INIT_SIZE (PTLRPC_MAX_BRW_SIZE / 4)
mutex_lock(&page_pool->add_pages_mutex);
- if (npages + page_pool->epp_total_pages > page_pool->epp_max_pages)
- npages = page_pool->epp_max_pages - page_pool->epp_total_pages;
+ if (npages + page_pool->ppp_total_pages > page_pool->ppp_max_pages)
+ npages = page_pool->ppp_max_pages - page_pool->ppp_total_pages;
LASSERT(npages > 0);
- page_pool->epp_st_grows++;
+ page_pool->ppp_st_grows++;
npools = npages_to_npools(npages);
OBD_ALLOC_PTR_ARRAY(pools, npools);
}
out:
if (rc) {
- page_pool->epp_st_grow_fails++;
+ page_pool->ppp_st_grow_fails++;
CERROR("Failed to allocate %d pages\n", npages);
}
static inline void pools_wakeup(unsigned int pool)
{
- assert_spin_locked(&page_pools[pool]->epp_lock);
+ assert_spin_locked(&page_pools[pool]->ppp_lock);
/* waitqueue_active */
- if (unlikely(waitqueue_active(&page_pools[pool]->epp_waitq)))
- wake_up_all(&page_pools[pool]->epp_waitq);
+ if (unlikely(waitqueue_active(&page_pools[pool]->ppp_waitq)))
+ wake_up_all(&page_pools[pool]->ppp_waitq);
}
static int pools_should_grow(int page_needed, time64_t now,
* don't grow if someone else is growing the pools right now,
* or the pools has reached its full capacity
*/
- if (page_pools[pool_index]->epp_growing ||
- page_pools[pool_index]->epp_total_pages ==
- page_pools[pool_index]->epp_max_pages)
+ if (page_pools[pool_index]->ppp_growing ||
+ page_pools[pool_index]->ppp_total_pages ==
+ page_pools[pool_index]->ppp_max_pages)
return 0;
/* if total pages is not enough, we need to grow */
- if (page_pools[pool_index]->epp_total_pages < page_needed)
+ if (page_pools[pool_index]->ppp_total_pages < page_needed)
return 1;
/*
*/
int sptlrpc_pool_get_free_pages(unsigned int pool)
{
- return page_pools[pool]->epp_free_pages;
+ return page_pools[pool]->ppp_free_pages;
}
EXPORT_SYMBOL(sptlrpc_pool_get_free_pages);
*/
int __pool_is_at_full_capacity(unsigned int pool)
{
- return (page_pools[pool]->epp_total_pages ==
- page_pools[pool]->epp_max_pages);
+ return (page_pools[pool]->ppp_total_pages ==
+ page_pools[pool]->ppp_max_pages);
}
/*
if (pool_idx != PAGES_POOL)
count = 1;
- if (!array || count <= 0 || count > page_pool->epp_max_pages)
+ if (!array || count <= 0 || count > page_pool->ppp_max_pages)
return -EINVAL;
- spin_lock(&page_pool->epp_lock);
+ spin_lock(&page_pool->ppp_lock);
- page_pool->epp_st_access++;
+ page_pool->ppp_st_access++;
again:
- if (unlikely(page_pool->epp_free_pages < count)) {
+ if (unlikely(page_pool->ppp_free_pages < count)) {
if (tick_ns == 0)
tick_ns = ktime_get_ns();
now = ktime_get_real_seconds();
- page_pool->epp_st_missings++;
- page_pool->epp_pages_short += count;
+ page_pool->ppp_st_missings++;
+ page_pool->ppp_pages_short += count;
if (pools_should_grow(count, now, pool_idx)) {
- page_pool->epp_growing = 1;
+ page_pool->ppp_growing = 1;
- spin_unlock(&page_pool->epp_lock);
- CDEBUG(D_SEC, "epp_pages_short: %lu\n",
- page_pool->epp_pages_short);
+ spin_unlock(&page_pool->ppp_lock);
+ CDEBUG(D_SEC, "ppp_pages_short: %lu\n",
+ page_pool->ppp_pages_short);
pool_add_pages(8, pool_idx);
- spin_lock(&page_pool->epp_lock);
+ spin_lock(&page_pool->ppp_lock);
- page_pool->epp_growing = 0;
+ page_pool->ppp_growing = 0;
pools_wakeup(pool_idx);
} else {
- if (page_pool->epp_growing) {
- if (++page_pool->epp_waitqlen >
- page_pool->epp_st_max_wqlen)
- page_pool->epp_st_max_wqlen =
- page_pool->epp_waitqlen;
+ if (page_pool->ppp_growing) {
+ if (++page_pool->ppp_waitqlen >
+ page_pool->ppp_st_max_wqlen)
+ page_pool->ppp_st_max_wqlen =
+ page_pool->ppp_waitqlen;
set_current_state(TASK_UNINTERRUPTIBLE);
init_wait(&waitlink);
- add_wait_queue(&page_pool->epp_waitq,
+ add_wait_queue(&page_pool->ppp_waitq,
&waitlink);
- spin_unlock(&page_pool->epp_lock);
+ spin_unlock(&page_pool->ppp_lock);
schedule();
- remove_wait_queue(&page_pool->epp_waitq,
+ remove_wait_queue(&page_pool->ppp_waitq,
&waitlink);
- spin_lock(&page_pool->epp_lock);
- page_pool->epp_waitqlen--;
+ spin_lock(&page_pool->ppp_lock);
+ page_pool->ppp_waitqlen--;
} else {
/*
* ptlrpcd thread should not sleep in that
* Instead, return -ENOMEM so that upper layers
* will put request back in queue.
*/
- page_pool->epp_st_outofmem++;
+ page_pool->ppp_st_outofmem++;
GOTO(out_unlock, rc = -ENOMEM);
}
}
- if (page_pool->epp_pages_short < count)
+ if (page_pool->ppp_pages_short < count)
GOTO(out_unlock, rc = -EPROTO);
- page_pool->epp_pages_short -= count;
+ page_pool->ppp_pages_short -= count;
this_idle = 0;
goto again;
if (unlikely(tick_ns)) {
ktime_t tick = ktime_sub_ns(ktime_get(), tick_ns);
- if (ktime_after(tick, page_pool->epp_st_max_wait))
- page_pool->epp_st_max_wait = tick;
+ if (ktime_after(tick, page_pool->ppp_st_max_wait))
+ page_pool->ppp_st_max_wait = tick;
}
/* proceed with rest of allocation */
- page_pool->epp_free_pages -= count;
+ page_pool->ppp_free_pages -= count;
- p_idx = page_pool->epp_free_pages / PAGES_PER_POOL;
- g_idx = page_pool->epp_free_pages % PAGES_PER_POOL;
+ p_idx = page_pool->ppp_free_pages / PAGES_PER_POOL;
+ g_idx = page_pool->ppp_free_pages % PAGES_PER_POOL;
for (i = 0; i < count; i++) {
void **pagep = page_from(array, i);
- if (page_pool->epp_pools[p_idx][g_idx] == NULL)
+ if (page_pool->ppp_pools[p_idx][g_idx] == NULL)
GOTO(out_unlock, rc = -EPROTO);
- *pagep = page_pool->epp_pools[p_idx][g_idx];
- page_pool->epp_pools[p_idx][g_idx] = NULL;
+ *pagep = page_pool->ppp_pools[p_idx][g_idx];
+ page_pool->ppp_pools[p_idx][g_idx] = NULL;
if (++g_idx == PAGES_PER_POOL) {
p_idx++;
}
}
- if (page_pool->epp_free_pages < page_pool->epp_st_lowfree)
- page_pool->epp_st_lowfree =
- page_pool->epp_free_pages;
+ if (page_pool->ppp_free_pages < page_pool->ppp_st_lowfree)
+ page_pool->ppp_st_lowfree =
+ page_pool->ppp_free_pages;
/*
* new idle index = (old * weight + new) / (weight + 1)
*/
if (this_idle == -1) {
- this_idle = page_pool->epp_free_pages * IDLE_IDX_MAX /
- page_pool->epp_total_pages;
+ this_idle = page_pool->ppp_free_pages * IDLE_IDX_MAX /
+ page_pool->ppp_total_pages;
}
- page_pool->epp_idle_idx = (page_pool->epp_idle_idx *
+ page_pool->ppp_idle_idx = (page_pool->ppp_idle_idx *
IDLE_IDX_WEIGHT + this_idle) /
(IDLE_IDX_WEIGHT + 1);
- page_pool->epp_last_access = ktime_get_seconds();
+ page_pool->ppp_last_access = ktime_get_seconds();
out_unlock:
- spin_unlock(&page_pool->epp_lock);
+ spin_unlock(&page_pool->ppp_lock);
return rc;
}
int rc;
LASSERT(desc->bd_iov_count > 0);
- LASSERT(desc->bd_iov_count <= page_pools[PAGES_POOL]->epp_max_pages);
+ LASSERT(desc->bd_iov_count <= page_pools[PAGES_POOL]->ppp_max_pages);
/* resent bulk, enc iov might have been allocated previously */
if (desc->bd_enc_vec != NULL)
page_pool = page_pools[pool_idx];
LASSERTF(page_pool != NULL, "count %u, pool %u\n", count, pool_idx);
- spin_lock(&page_pool->epp_lock);
+ spin_lock(&page_pool->ppp_lock);
- p_idx = page_pool->epp_free_pages / PAGES_PER_POOL;
- g_idx = page_pool->epp_free_pages % PAGES_PER_POOL;
+ p_idx = page_pool->ppp_free_pages / PAGES_PER_POOL;
+ g_idx = page_pool->ppp_free_pages % PAGES_PER_POOL;
- if (page_pool->epp_free_pages + count > page_pool->epp_total_pages)
+ if (page_pool->ppp_free_pages + count > page_pool->ppp_total_pages)
GOTO(out_unlock, rc = -EPROTO);
- if (!page_pool->epp_pools[p_idx])
+ if (!page_pool->ppp_pools[p_idx])
GOTO(out_unlock, rc = -EPROTO);
for (i = 0; i < count; i++) {
void **pagep = page_from(array, i);
if (!*pagep ||
- page_pool->epp_pools[p_idx][g_idx] != NULL)
+ page_pool->ppp_pools[p_idx][g_idx] != NULL)
GOTO(out_unlock, rc = -EPROTO);
- page_pool->epp_pools[p_idx][g_idx] = *pagep;
+ page_pool->ppp_pools[p_idx][g_idx] = *pagep;
if (++g_idx == PAGES_PER_POOL) {
p_idx++;
g_idx = 0;
}
}
- page_pool->epp_free_pages += count;
+ page_pool->ppp_free_pages += count;
pools_wakeup(pool_idx);
out_unlock:
- spin_unlock(&page_pool->epp_lock);
+ spin_unlock(&page_pool->ppp_lock);
return rc;
}
{
int need_grow = 0;
- spin_lock(&page_pools[PAGES_POOL]->epp_lock);
- if (page_pools[PAGES_POOL]->epp_growing == 0 &&
- page_pools[PAGES_POOL]->epp_total_pages == 0) {
- page_pools[PAGES_POOL]->epp_growing = 1;
+ spin_lock(&page_pools[PAGES_POOL]->ppp_lock);
+ if (page_pools[PAGES_POOL]->ppp_growing == 0 &&
+ page_pools[PAGES_POOL]->ppp_total_pages == 0) {
+ page_pools[PAGES_POOL]->ppp_growing = 1;
need_grow = 1;
}
- spin_unlock(&page_pools[PAGES_POOL]->epp_lock);
+ spin_unlock(&page_pools[PAGES_POOL]->ppp_lock);
if (need_grow) {
pool_add_pages(PTLRPC_MAX_BRW_PAGES * 2, PAGES_POOL);
- spin_lock(&page_pools[PAGES_POOL]->epp_lock);
- page_pools[PAGES_POOL]->epp_growing = 0;
+ spin_lock(&page_pools[PAGES_POOL]->ppp_lock);
+ page_pools[PAGES_POOL]->ppp_growing = 0;
pools_wakeup(PAGES_POOL);
- spin_unlock(&page_pools[PAGES_POOL]->epp_lock);
+ spin_unlock(&page_pools[PAGES_POOL]->ppp_lock);
}
return 0;
}
static inline void pools_alloc(struct ptlrpc_page_pool *pool)
{
- LASSERT(pool->epp_max_pools);
- OBD_ALLOC_LARGE(pool->epp_pools,
- pool->epp_max_pools *
- sizeof(*pool->epp_pools));
+ LASSERT(pool->ppp_max_pools);
+ OBD_ALLOC_LARGE(pool->ppp_pools,
+ pool->ppp_max_pools *
+ sizeof(*pool->ppp_pools));
}
static inline void pools_free(unsigned int i)
{
- LASSERT(page_pools[i]->epp_max_pools);
- LASSERT(page_pools[i]->epp_pools);
+ LASSERT(page_pools[i]->ppp_max_pools);
+ LASSERT(page_pools[i]->ppp_pools);
- OBD_FREE_LARGE(page_pools[i]->epp_pools,
- page_pools[i]->epp_max_pools *
- sizeof(*page_pools[i]->epp_pools));
+ OBD_FREE_LARGE(page_pools[i]->ppp_pools,
+ page_pools[i]->ppp_max_pools *
+ sizeof(*page_pools[i]->ppp_pools));
}
int sptlrpc_pool_init(void)
GOTO(fail, rc = -ENOMEM);
pool = page_pools[pool_index];
- pool->epp_max_pages =
+ pool->ppp_max_pages =
cfs_totalram_pages() / POOLS_COUNT;
if (enc_pool_max_memory_mb > 0 &&
enc_pool_max_memory_mb <= (cfs_totalram_pages() >> mult))
- pool->epp_max_pages =
+ pool->ppp_max_pages =
enc_pool_max_memory_mb << mult;
- pool->epp_max_pools =
- npages_to_npools(pool->epp_max_pages);
+ pool->ppp_max_pools =
+ npages_to_npools(pool->ppp_max_pages);
- init_waitqueue_head(&pool->epp_waitq);
- pool->epp_last_shrink = ktime_get_seconds();
- pool->epp_last_access = ktime_get_seconds();
+ init_waitqueue_head(&pool->ppp_waitq);
+ pool->ppp_last_shrink = ktime_get_seconds();
+ pool->ppp_last_access = ktime_get_seconds();
- spin_lock_init(&pool->epp_lock);
- pool->epp_st_max_wait = ktime_set(0, 0);
+ spin_lock_init(&pool->ppp_lock);
+ pool->ppp_st_max_wait = ktime_set(0, 0);
pools_alloc(pool);
CDEBUG(D_SEC, "Allocated pool %i\n", pool_index);
- if (pool->epp_pools == NULL)
+ if (pool->ppp_pools == NULL)
GOTO(fail, rc = -ENOMEM);
#ifdef HAVE_SHRINKER_COUNT
pool->pool_shrinker.count_objects = pools_shrink_count;
pool = page_pools[pool_index];
if (pool) {
unregister_shrinker(&pool->pool_shrinker);
- if (pool->epp_pools)
+ if (pool->ppp_pools)
pools_free(pool_index);
OBD_FREE(pool, sizeof(**page_pools));
}
for (pool_index = 0; pool_index < POOLS_COUNT; pool_index++) {
pool = page_pools[pool_index];
unregister_shrinker(&pool->pool_shrinker);
- LASSERT(pool->epp_pools);
- LASSERT(pool->epp_total_pages == pool->epp_free_pages);
+ LASSERT(pool->ppp_pools);
+ LASSERT(pool->ppp_total_pages == pool->ppp_free_pages);
- npools = npages_to_npools(pool->epp_total_pages);
- cleaned = pools_cleanup(pool->epp_pools,
+ npools = npages_to_npools(pool->ppp_total_pages);
+ cleaned = pools_cleanup(pool->ppp_pools,
npools, pool_index);
- LASSERT(cleaned == pool->epp_total_pages);
+ LASSERT(cleaned == pool->ppp_total_pages);
pools_free(pool_index);
- if (pool->epp_st_access > 0) {
+ if (pool->ppp_st_access > 0) {
CDEBUG(D_SEC,
"max pages %lu, grows %u, grow fails %u, shrinks %u, access %lu, missing %lu, max qlen %u, max wait ms %lld, out of mem %lu\n",
- pool->epp_st_max_pages,
- pool->epp_st_grows,
- pool->epp_st_grow_fails,
- pool->epp_st_shrinks,
- pool->epp_st_access,
- pool->epp_st_missings,
- pool->epp_st_max_wqlen,
- ktime_to_ms(pool->epp_st_max_wait),
- pool->epp_st_outofmem);
+ pool->ppp_st_max_pages,
+ pool->ppp_st_grows,
+ pool->ppp_st_grow_fails,
+ pool->ppp_st_shrinks,
+ pool->ppp_st_access,
+ pool->ppp_st_missings,
+ pool->ppp_st_max_wqlen,
+ ktime_to_ms(pool->ppp_st_max_wait),
+ pool->ppp_st_outofmem);
}
OBD_FREE(pool, sizeof(**page_pools));
git://git.whamcloud.com / fs / lustre-release.git / commitdiff