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-rw-r--r--fs/fscache/cookie.c3
-rw-r--r--fs/fscache/object.c3
-rw-r--r--fs/fscache/operation.c26
-rw-r--r--fs/fscache/page.c51
4 files changed, 76 insertions, 7 deletions
diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c
index 20bc3341f113..ea1f80daaff4 100644
--- a/fs/fscache/cookie.c
+++ b/fs/fscache/cookie.c
@@ -691,10 +691,11 @@ int __fscache_check_consistency(struct fscache_cookie *cookie)
if (!op)
return -ENOMEM;
- fscache_operation_init(op, NULL, NULL, NULL);
+ fscache_operation_init(cookie, op, NULL, NULL, NULL);
op->flags = FSCACHE_OP_MYTHREAD |
(1 << FSCACHE_OP_WAITING) |
(1 << FSCACHE_OP_UNUSE_COOKIE);
+ trace_fscache_page_op(cookie, NULL, op, fscache_page_op_check_consistency);
spin_lock(&cookie->lock);
diff --git a/fs/fscache/object.c b/fs/fscache/object.c
index 99afe64352a5..7c0ddb7ae29a 100644
--- a/fs/fscache/object.c
+++ b/fs/fscache/object.c
@@ -982,11 +982,12 @@ static const struct fscache_state *_fscache_invalidate_object(struct fscache_obj
if (!op)
goto nomem;
- fscache_operation_init(op, object->cache->ops->invalidate_object,
+ fscache_operation_init(cookie, op, object->cache->ops->invalidate_object,
NULL, NULL);
op->flags = FSCACHE_OP_ASYNC |
(1 << FSCACHE_OP_EXCLUSIVE) |
(1 << FSCACHE_OP_UNUSE_COOKIE);
+ trace_fscache_page_op(cookie, NULL, op, fscache_page_op_invalidate);
spin_lock(&cookie->lock);
if (fscache_submit_exclusive_op(object, op) < 0)
diff --git a/fs/fscache/operation.c b/fs/fscache/operation.c
index de67745e1cd7..7a071e1e952d 100644
--- a/fs/fscache/operation.c
+++ b/fs/fscache/operation.c
@@ -32,7 +32,8 @@ static void fscache_operation_dummy_cancel(struct fscache_operation *op)
* Do basic initialisation of an operation. The caller must still set flags,
* object and processor if needed.
*/
-void fscache_operation_init(struct fscache_operation *op,
+void fscache_operation_init(struct fscache_cookie *cookie,
+ struct fscache_operation *op,
fscache_operation_processor_t processor,
fscache_operation_cancel_t cancel,
fscache_operation_release_t release)
@@ -46,6 +47,7 @@ void fscache_operation_init(struct fscache_operation *op,
op->release = release;
INIT_LIST_HEAD(&op->pend_link);
fscache_stat(&fscache_n_op_initialised);
+ trace_fscache_op(cookie, op, fscache_op_init);
}
EXPORT_SYMBOL(fscache_operation_init);
@@ -59,6 +61,8 @@ EXPORT_SYMBOL(fscache_operation_init);
*/
void fscache_enqueue_operation(struct fscache_operation *op)
{
+ struct fscache_cookie *cookie = op->object->cookie;
+
_enter("{OBJ%x OP%x,%u}",
op->object->debug_id, op->debug_id, atomic_read(&op->usage));
@@ -71,12 +75,14 @@ void fscache_enqueue_operation(struct fscache_operation *op)
fscache_stat(&fscache_n_op_enqueue);
switch (op->flags & FSCACHE_OP_TYPE) {
case FSCACHE_OP_ASYNC:
+ trace_fscache_op(cookie, op, fscache_op_enqueue_async);
_debug("queue async");
atomic_inc(&op->usage);
if (!queue_work(fscache_op_wq, &op->work))
fscache_put_operation(op);
break;
case FSCACHE_OP_MYTHREAD:
+ trace_fscache_op(cookie, op, fscache_op_enqueue_mythread);
_debug("queue for caller's attention");
break;
default:
@@ -101,6 +107,8 @@ static void fscache_run_op(struct fscache_object *object,
wake_up_bit(&op->flags, FSCACHE_OP_WAITING);
if (op->processor)
fscache_enqueue_operation(op);
+ else
+ trace_fscache_op(object->cookie, op, fscache_op_run);
fscache_stat(&fscache_n_op_run);
}
@@ -155,6 +163,8 @@ int fscache_submit_exclusive_op(struct fscache_object *object,
_enter("{OBJ%x OP%x},", object->debug_id, op->debug_id);
+ trace_fscache_op(object->cookie, op, fscache_op_submit_ex);
+
ASSERTCMP(op->state, ==, FSCACHE_OP_ST_INITIALISED);
ASSERTCMP(atomic_read(&op->usage), >, 0);
@@ -240,6 +250,8 @@ int fscache_submit_op(struct fscache_object *object,
_enter("{OBJ%x OP%x},{%u}",
object->debug_id, op->debug_id, atomic_read(&op->usage));
+ trace_fscache_op(object->cookie, op, fscache_op_submit);
+
ASSERTCMP(op->state, ==, FSCACHE_OP_ST_INITIALISED);
ASSERTCMP(atomic_read(&op->usage), >, 0);
@@ -357,6 +369,8 @@ int fscache_cancel_op(struct fscache_operation *op,
_enter("OBJ%x OP%x}", op->object->debug_id, op->debug_id);
+ trace_fscache_op(object->cookie, op, fscache_op_cancel);
+
ASSERTCMP(op->state, >=, FSCACHE_OP_ST_PENDING);
ASSERTCMP(op->state, !=, FSCACHE_OP_ST_CANCELLED);
ASSERTCMP(atomic_read(&op->usage), >, 0);
@@ -419,6 +433,8 @@ void fscache_cancel_all_ops(struct fscache_object *object)
fscache_stat(&fscache_n_op_cancelled);
list_del_init(&op->pend_link);
+ trace_fscache_op(object->cookie, op, fscache_op_cancel_all);
+
ASSERTCMP(op->state, ==, FSCACHE_OP_ST_PENDING);
op->cancel(op);
op->state = FSCACHE_OP_ST_CANCELLED;
@@ -454,9 +470,11 @@ void fscache_op_complete(struct fscache_operation *op, bool cancelled)
spin_lock(&object->lock);
if (!cancelled) {
+ trace_fscache_op(object->cookie, op, fscache_op_completed);
op->state = FSCACHE_OP_ST_COMPLETE;
} else {
op->cancel(op);
+ trace_fscache_op(object->cookie, op, fscache_op_cancelled);
op->state = FSCACHE_OP_ST_CANCELLED;
}
@@ -488,6 +506,8 @@ void fscache_put_operation(struct fscache_operation *op)
if (!atomic_dec_and_test(&op->usage))
return;
+ trace_fscache_op(op->object->cookie, op, fscache_op_put);
+
_debug("PUT OP");
ASSERTIFCMP(op->state != FSCACHE_OP_ST_INITIALISED &&
op->state != FSCACHE_OP_ST_COMPLETE,
@@ -563,6 +583,8 @@ void fscache_operation_gc(struct work_struct *work)
spin_unlock(&cache->op_gc_list_lock);
object = op->object;
+ trace_fscache_op(object->cookie, op, fscache_op_gc);
+
spin_lock(&object->lock);
_debug("GC DEFERRED REL OBJ%x OP%x",
@@ -601,6 +623,8 @@ void fscache_op_work_func(struct work_struct *work)
_enter("{OBJ%x OP%x,%d}",
op->object->debug_id, op->debug_id, atomic_read(&op->usage));
+ trace_fscache_op(op->object->cookie, op, fscache_op_work);
+
ASSERT(op->processor != NULL);
start = jiffies;
op->processor(op);
diff --git a/fs/fscache/page.c b/fs/fscache/page.c
index b9f18bf4227d..810b33aced1c 100644
--- a/fs/fscache/page.c
+++ b/fs/fscache/page.c
@@ -27,6 +27,7 @@ bool __fscache_check_page_write(struct fscache_cookie *cookie, struct page *page
rcu_read_lock();
val = radix_tree_lookup(&cookie->stores, page->index);
rcu_read_unlock();
+ trace_fscache_check_page(cookie, page, val, 0);
return val != NULL;
}
@@ -39,6 +40,8 @@ void __fscache_wait_on_page_write(struct fscache_cookie *cookie, struct page *pa
{
wait_queue_head_t *wq = bit_waitqueue(&cookie->flags, 0);
+ trace_fscache_page(cookie, page, fscache_page_write_wait);
+
wait_event(*wq, !__fscache_check_page_write(cookie, page));
}
EXPORT_SYMBOL(__fscache_wait_on_page_write);
@@ -69,6 +72,8 @@ bool __fscache_maybe_release_page(struct fscache_cookie *cookie,
_enter("%p,%p,%x", cookie, page, gfp);
+ trace_fscache_page(cookie, page, fscache_page_maybe_release);
+
try_again:
rcu_read_lock();
val = radix_tree_lookup(&cookie->stores, page->index);
@@ -101,6 +106,7 @@ try_again:
}
xpage = radix_tree_delete(&cookie->stores, page->index);
+ trace_fscache_page(cookie, page, fscache_page_radix_delete);
spin_unlock(&cookie->stores_lock);
if (xpage) {
@@ -112,6 +118,7 @@ try_again:
}
wake_up_bit(&cookie->flags, 0);
+ trace_fscache_wake_cookie(cookie);
if (xpage)
put_page(xpage);
__fscache_uncache_page(cookie, page);
@@ -144,7 +151,7 @@ static void fscache_end_page_write(struct fscache_object *object,
struct page *page)
{
struct fscache_cookie *cookie;
- struct page *xpage = NULL;
+ struct page *xpage = NULL, *val;
spin_lock(&object->lock);
cookie = object->cookie;
@@ -154,13 +161,24 @@ static void fscache_end_page_write(struct fscache_object *object,
spin_lock(&cookie->stores_lock);
radix_tree_tag_clear(&cookie->stores, page->index,
FSCACHE_COOKIE_STORING_TAG);
+ trace_fscache_page(cookie, page, fscache_page_radix_clear_store);
if (!radix_tree_tag_get(&cookie->stores, page->index,
FSCACHE_COOKIE_PENDING_TAG)) {
fscache_stat(&fscache_n_store_radix_deletes);
xpage = radix_tree_delete(&cookie->stores, page->index);
+ trace_fscache_page(cookie, page, fscache_page_radix_delete);
+ trace_fscache_page(cookie, page, fscache_page_write_end);
+
+ val = radix_tree_lookup(&cookie->stores, page->index);
+ trace_fscache_check_page(cookie, page, val, 1);
+ } else {
+ trace_fscache_page(cookie, page, fscache_page_write_end_pend);
}
spin_unlock(&cookie->stores_lock);
wake_up_bit(&cookie->flags, 0);
+ trace_fscache_wake_cookie(cookie);
+ } else {
+ trace_fscache_page(cookie, page, fscache_page_write_end_noc);
}
spin_unlock(&object->lock);
if (xpage)
@@ -215,7 +233,8 @@ int __fscache_attr_changed(struct fscache_cookie *cookie)
return -ENOMEM;
}
- fscache_operation_init(op, fscache_attr_changed_op, NULL, NULL);
+ fscache_operation_init(cookie, op, fscache_attr_changed_op, NULL, NULL);
+ trace_fscache_page_op(cookie, NULL, op, fscache_page_op_attr_changed);
op->flags = FSCACHE_OP_ASYNC |
(1 << FSCACHE_OP_EXCLUSIVE) |
(1 << FSCACHE_OP_UNUSE_COOKIE);
@@ -299,7 +318,7 @@ static struct fscache_retrieval *fscache_alloc_retrieval(
return NULL;
}
- fscache_operation_init(&op->op, NULL,
+ fscache_operation_init(cookie, &op->op, NULL,
fscache_do_cancel_retrieval,
fscache_release_retrieval_op);
op->op.flags = FSCACHE_OP_MYTHREAD |
@@ -370,6 +389,7 @@ int fscache_wait_for_operation_activation(struct fscache_object *object,
fscache_stat(stat_op_waits);
if (wait_on_bit(&op->flags, FSCACHE_OP_WAITING,
TASK_INTERRUPTIBLE) != 0) {
+ trace_fscache_op(object->cookie, op, fscache_op_signal);
ret = fscache_cancel_op(op, false);
if (ret == 0)
return -ERESTARTSYS;
@@ -391,6 +411,7 @@ check_if_dead:
if (unlikely(fscache_object_is_dying(object) ||
fscache_cache_is_broken(object))) {
enum fscache_operation_state state = op->state;
+ trace_fscache_op(object->cookie, op, fscache_op_signal);
fscache_cancel_op(op, true);
if (stat_object_dead)
fscache_stat(stat_object_dead);
@@ -445,6 +466,7 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie,
return -ENOMEM;
}
atomic_set(&op->n_pages, 1);
+ trace_fscache_page_op(cookie, page, &op->op, fscache_page_op_retr_one);
spin_lock(&cookie->lock);
@@ -573,6 +595,7 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie,
if (!op)
return -ENOMEM;
atomic_set(&op->n_pages, *nr_pages);
+ trace_fscache_page_op(cookie, NULL, &op->op, fscache_page_op_retr_multi);
spin_lock(&cookie->lock);
@@ -684,6 +707,7 @@ int __fscache_alloc_page(struct fscache_cookie *cookie,
if (!op)
return -ENOMEM;
atomic_set(&op->n_pages, 1);
+ trace_fscache_page_op(cookie, page, &op->op, fscache_page_op_alloc_one);
spin_lock(&cookie->lock);
@@ -813,9 +837,11 @@ again:
fscache_stat(&fscache_n_store_calls);
/* find a page to store */
+ results[0] = NULL;
page = NULL;
n = radix_tree_gang_lookup_tag(&cookie->stores, results, 0, 1,
FSCACHE_COOKIE_PENDING_TAG);
+ trace_fscache_gang_lookup(cookie, &op->op, results, n, op->store_limit);
if (n != 1)
goto superseded;
page = results[0];
@@ -825,6 +851,7 @@ again:
FSCACHE_COOKIE_STORING_TAG);
radix_tree_tag_clear(&cookie->stores, page->index,
FSCACHE_COOKIE_PENDING_TAG);
+ trace_fscache_page(cookie, page, fscache_page_radix_pend2store);
spin_unlock(&cookie->stores_lock);
spin_unlock(&object->lock);
@@ -836,6 +863,7 @@ again:
fscache_stat(&fscache_n_cop_write_page);
ret = object->cache->ops->write_page(op, page);
fscache_stat_d(&fscache_n_cop_write_page);
+ trace_fscache_wrote_page(cookie, page, &op->op, ret);
fscache_end_page_write(object, page);
if (ret < 0) {
fscache_abort_object(object);
@@ -849,6 +877,7 @@ again:
discard_page:
fscache_stat(&fscache_n_store_pages_over_limit);
+ trace_fscache_wrote_page(cookie, page, &op->op, -ENOBUFS);
fscache_end_page_write(object, page);
goto again;
@@ -887,6 +916,8 @@ void fscache_invalidate_writes(struct fscache_cookie *cookie)
for (i = n - 1; i >= 0; i--) {
page = results[i];
radix_tree_delete(&cookie->stores, page->index);
+ trace_fscache_page(cookie, page, fscache_page_radix_delete);
+ trace_fscache_page(cookie, page, fscache_page_inval);
}
spin_unlock(&cookie->stores_lock);
@@ -896,6 +927,7 @@ void fscache_invalidate_writes(struct fscache_cookie *cookie)
}
wake_up_bit(&cookie->flags, 0);
+ trace_fscache_wake_cookie(cookie);
_leave("");
}
@@ -954,7 +986,7 @@ int __fscache_write_page(struct fscache_cookie *cookie,
if (!op)
goto nomem;
- fscache_operation_init(&op->op, fscache_write_op, NULL,
+ fscache_operation_init(cookie, &op->op, fscache_write_op, NULL,
fscache_release_write_op);
op->op.flags = FSCACHE_OP_ASYNC |
(1 << FSCACHE_OP_WAITING) |
@@ -964,6 +996,8 @@ int __fscache_write_page(struct fscache_cookie *cookie,
if (ret < 0)
goto nomem_free;
+ trace_fscache_page_op(cookie, page, &op->op, fscache_page_op_write_one);
+
ret = -ENOBUFS;
spin_lock(&cookie->lock);
@@ -975,6 +1009,8 @@ int __fscache_write_page(struct fscache_cookie *cookie,
if (test_bit(FSCACHE_IOERROR, &object->cache->flags))
goto nobufs;
+ trace_fscache_page(cookie, page, fscache_page_write);
+
/* add the page to the pending-storage radix tree on the backing
* object */
spin_lock(&object->lock);
@@ -990,8 +1026,10 @@ int __fscache_write_page(struct fscache_cookie *cookie,
goto nobufs_unlock_obj;
}
+ trace_fscache_page(cookie, page, fscache_page_radix_insert);
radix_tree_tag_set(&cookie->stores, page->index,
FSCACHE_COOKIE_PENDING_TAG);
+ trace_fscache_page(cookie, page, fscache_page_radix_set_pend);
get_page(page);
/* we only want one writer at a time, but we do need to queue new
@@ -1034,6 +1072,7 @@ already_pending:
submit_failed:
spin_lock(&cookie->stores_lock);
radix_tree_delete(&cookie->stores, page->index);
+ trace_fscache_page(cookie, page, fscache_page_radix_delete);
spin_unlock(&cookie->stores_lock);
wake_cookie = __fscache_unuse_cookie(cookie);
put_page(page);
@@ -1080,6 +1119,8 @@ void __fscache_uncache_page(struct fscache_cookie *cookie, struct page *page)
if (!PageFsCache(page))
goto done;
+ trace_fscache_page(cookie, page, fscache_page_uncache);
+
/* get the object */
spin_lock(&cookie->lock);
@@ -1128,6 +1169,8 @@ void fscache_mark_page_cached(struct fscache_retrieval *op, struct page *page)
atomic_inc(&fscache_n_marks);
#endif
+ trace_fscache_page(cookie, page, fscache_page_cached);
+
_debug("- mark %p{%lx}", page, page->index);
if (TestSetPageFsCache(page)) {
static bool once_only;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 11:54:02 +0000