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cachefiles: add tracepoints for on-demand read mode
Add tracepoints for on-demand read mode. Currently following tracepoints are added: OPEN request / COPEN reply CLOSE request READ request / CREAD reply write through anonymous fd release of anonymous fd Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com> Acked-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20220425122143.56815-8-jefflexu@linux.alibaba.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
This commit is contained in:
Jeffle Xu
Gao Xiang
parent
4e4f1788af
commit
1519670e4f
2 changed files with 181 additions and 0 deletions
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@ -30,6 +30,7 @@ static int cachefiles_ondemand_fd_release(struct inode *inode,
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xa_unlock(&cache->reqs);
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xa_erase(&cache->ondemand_ids, object_id);
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trace_cachefiles_ondemand_fd_release(object, object_id);
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cachefiles_put_object(object, cachefiles_obj_put_ondemand_fd);
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cachefiles_put_unbind_pincount(cache);
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return 0;
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@ -55,6 +56,7 @@ static ssize_t cachefiles_ondemand_fd_write_iter(struct kiocb *kiocb,
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if (ret < 0)
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return ret;
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trace_cachefiles_ondemand_fd_write(object, file_inode(file), pos, len);
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ret = __cachefiles_write(object, file, pos, iter, NULL, NULL);
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if (!ret)
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ret = len;
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@ -93,6 +95,7 @@ static long cachefiles_ondemand_fd_ioctl(struct file *filp, unsigned int ioctl,
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if (!req)
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return -EINVAL;
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trace_cachefiles_ondemand_cread(object, id);
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complete(&req->done);
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return 0;
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}
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@ -166,6 +169,7 @@ int cachefiles_ondemand_copen(struct cachefiles_cache *cache, char *args)
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clear_bit(FSCACHE_COOKIE_NO_DATA_TO_READ, &cookie->flags);
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else
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set_bit(FSCACHE_COOKIE_NO_DATA_TO_READ, &cookie->flags);
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trace_cachefiles_ondemand_copen(req->object, id, size);
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out:
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complete(&req->done);
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@ -213,6 +217,7 @@ static int cachefiles_ondemand_get_fd(struct cachefiles_req *req)
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object->ondemand_id = object_id;
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cachefiles_get_unbind_pincount(cache);
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trace_cachefiles_ondemand_open(object, &req->msg, load);
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return 0;
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err_put_fd:
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@ -426,6 +431,7 @@ static int cachefiles_ondemand_init_close_req(struct cachefiles_req *req,
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return -ENOENT;
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req->msg.object_id = object_id;
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trace_cachefiles_ondemand_close(object, &req->msg);
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return 0;
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}
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@ -452,6 +458,7 @@ static int cachefiles_ondemand_init_read_req(struct cachefiles_req *req,
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req->msg.object_id = object_id;
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load->off = read_ctx->off;
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load->len = read_ctx->len;
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trace_cachefiles_ondemand_read(object, &req->msg, load);
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return 0;
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}
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@ -673,6 +673,180 @@ TRACE_EVENT(cachefiles_io_error,
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__entry->error)
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);
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TRACE_EVENT(cachefiles_ondemand_open,
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TP_PROTO(struct cachefiles_object *obj, struct cachefiles_msg *msg,
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struct cachefiles_open *load),
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TP_ARGS(obj, msg, load),
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TP_STRUCT__entry(
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__field(unsigned int, obj )
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__field(unsigned int, msg_id )
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__field(unsigned int, object_id )
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__field(unsigned int, fd )
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__field(unsigned int, flags )
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),
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TP_fast_assign(
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__entry->obj = obj ? obj->debug_id : 0;
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__entry->msg_id = msg->msg_id;
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__entry->object_id = msg->object_id;
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__entry->fd = load->fd;
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__entry->flags = load->flags;
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),
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TP_printk("o=%08x mid=%x oid=%x fd=%d f=%x",
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__entry->obj,
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__entry->msg_id,
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__entry->object_id,
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__entry->fd,
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__entry->flags)
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);
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TRACE_EVENT(cachefiles_ondemand_copen,
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TP_PROTO(struct cachefiles_object *obj, unsigned int msg_id,
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long len),
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TP_ARGS(obj, msg_id, len),
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TP_STRUCT__entry(
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__field(unsigned int, obj )
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__field(unsigned int, msg_id )
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__field(long, len )
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),
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TP_fast_assign(
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__entry->obj = obj ? obj->debug_id : 0;
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__entry->msg_id = msg_id;
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__entry->len = len;
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),
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TP_printk("o=%08x mid=%x l=%lx",
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__entry->obj,
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__entry->msg_id,
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__entry->len)
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);
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TRACE_EVENT(cachefiles_ondemand_close,
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TP_PROTO(struct cachefiles_object *obj, struct cachefiles_msg *msg),
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TP_ARGS(obj, msg),
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TP_STRUCT__entry(
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__field(unsigned int, obj )
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__field(unsigned int, msg_id )
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__field(unsigned int, object_id )
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),
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TP_fast_assign(
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__entry->obj = obj ? obj->debug_id : 0;
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__entry->msg_id = msg->msg_id;
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__entry->object_id = msg->object_id;
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),
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TP_printk("o=%08x mid=%x oid=%x",
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__entry->obj,
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__entry->msg_id,
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__entry->object_id)
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);
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TRACE_EVENT(cachefiles_ondemand_read,
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TP_PROTO(struct cachefiles_object *obj, struct cachefiles_msg *msg,
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struct cachefiles_read *load),
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TP_ARGS(obj, msg, load),
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TP_STRUCT__entry(
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__field(unsigned int, obj )
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__field(unsigned int, msg_id )
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__field(unsigned int, object_id )
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__field(loff_t, start )
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__field(size_t, len )
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),
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TP_fast_assign(
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__entry->obj = obj ? obj->debug_id : 0;
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__entry->msg_id = msg->msg_id;
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__entry->object_id = msg->object_id;
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__entry->start = load->off;
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__entry->len = load->len;
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),
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TP_printk("o=%08x mid=%x oid=%x s=%llx l=%zx",
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__entry->obj,
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__entry->msg_id,
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__entry->object_id,
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__entry->start,
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__entry->len)
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);
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TRACE_EVENT(cachefiles_ondemand_cread,
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TP_PROTO(struct cachefiles_object *obj, unsigned int msg_id),
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TP_ARGS(obj, msg_id),
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TP_STRUCT__entry(
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__field(unsigned int, obj )
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__field(unsigned int, msg_id )
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),
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TP_fast_assign(
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__entry->obj = obj ? obj->debug_id : 0;
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__entry->msg_id = msg_id;
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),
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TP_printk("o=%08x mid=%x",
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__entry->obj,
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__entry->msg_id)
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);
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TRACE_EVENT(cachefiles_ondemand_fd_write,
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TP_PROTO(struct cachefiles_object *obj, struct inode *backer,
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loff_t start, size_t len),
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TP_ARGS(obj, backer, start, len),
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TP_STRUCT__entry(
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__field(unsigned int, obj )
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__field(unsigned int, backer )
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__field(loff_t, start )
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__field(size_t, len )
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),
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TP_fast_assign(
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__entry->obj = obj ? obj->debug_id : 0;
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__entry->backer = backer->i_ino;
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__entry->start = start;
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__entry->len = len;
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),
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TP_printk("o=%08x iB=%x s=%llx l=%zx",
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__entry->obj,
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__entry->backer,
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__entry->start,
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__entry->len)
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);
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TRACE_EVENT(cachefiles_ondemand_fd_release,
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TP_PROTO(struct cachefiles_object *obj, int object_id),
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TP_ARGS(obj, object_id),
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TP_STRUCT__entry(
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__field(unsigned int, obj )
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__field(unsigned int, object_id )
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),
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TP_fast_assign(
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__entry->obj = obj ? obj->debug_id : 0;
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__entry->object_id = object_id;
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),
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TP_printk("o=%08x oid=%x",
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__entry->obj,
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__entry->object_id)
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);
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#endif /* _TRACE_CACHEFILES_H */
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/* This part must be outside protection */
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