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fscache: Add more tracepoints

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Add more tracepoints to fscache, including:

 (*) fscache_page - Tracks netfs pages known to fscache.

 (*) fscache_check_page - Tracks the netfs querying whether a page is
     pending storage.

 (*) fscache_wake_cookie - Tracks cookies being woken up after a page
     completes/aborts storage in the cache.

 (*) fscache_op - Tracks operations being initialised.

 (*) fscache_wrote_page - Tracks return of the backend write_page op.

 (*) fscache_gang_lookup - Tracks lookup of pages to be stored in the write
     operation.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2018-04-04 13:41:27 +01:00
parent a18feb5576
commit 08c2e3d087
6 changed files with 330 additions and 8 deletions
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3
include/linux/fscache-cache.h
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@@ -135,7 +135,8 @@ extern void fscache_op_work_func(struct work_struct *work);
extern void fscache_enqueue_operation(struct fscache_operation *);
extern void fscache_op_complete(struct fscache_operation *, bool);
extern void fscache_put_operation(struct fscache_operation *);
extern void fscache_operation_init(struct fscache_operation *,
extern void fscache_operation_init(struct fscache_cookie *,
struct fscache_operation *,
fscache_operation_processor_t,
fscache_operation_cancel_t,
fscache_operation_release_t);