s390/scsi/zfcp_diag.c

37 	struct zfcp_diag_header *hdr;
46 	hdr = &diag->port_data.header;
48 	spin_lock_init(&hdr->access_lock);
49 	hdr->buffer = &diag->port_data.data;
50 	hdr->buffer_size = sizeof(diag->port_data.data);
52 	hdr->timestamp = jiffies - msecs_to_jiffies(diag->max_age);
55 	hdr = &diag->config_data.header;
57 	spin_lock_init(&hdr->access_lock);
58 	hdr->buffer = &diag->config_data.data;
59 	hdr->buffer_size = sizeof(diag->config_data.data);
61 	hdr->timestamp = jiffies - msecs_to_jiffies(diag->max_age);
82  * @hdr: the meta data to update.
86 void zfcp_diag_update_xdata(struct zfcp_diag_header *const hdr,
92 	spin_lock_irqsave(&hdr->access_lock, flags);
95 	if (!time_after_eq(capture_timestamp, hdr->timestamp))
98 	hdr->timestamp = capture_timestamp;
99 	hdr->incomplete = incomplete;
100 	memcpy(hdr->buffer, data, hdr->buffer_size);
102 	spin_unlock_irqrestore(&hdr->access_lock, flags);
166 				     struct zfcp_diag_header *const hdr,
169 	__must_hold(hdr->access_lock)
173 	if (hdr->updating == 1) {
175 						       hdr->updating == 0,
176 						       hdr->access_lock);
179 		hdr->updating = 1;
180 		spin_unlock_irqrestore(&hdr->access_lock, *flags);
185 		spin_lock_irqsave(&hdr->access_lock, *flags);
186 		hdr->updating = 0;
200 				    const struct zfcp_diag_header *const hdr)
201 	__must_hold(hdr->access_lock)
209 	if (!time_after_eq(now, hdr->timestamp))
212 	if (jiffies_to_msecs(now - hdr->timestamp) >= diag->max_age)
222  * @hdr: buffer-header for which to update with the collected diagnostics.
225  * This function will cause an update of the given @hdr by calling the also
243 				    struct zfcp_diag_header *const hdr,
249 	spin_lock_irqsave(&hdr->access_lock, flags);
252 	     !__zfcp_diag_test_buffer_age_isfresh(adapter->diagnostics, hdr);
254 		rc = __zfcp_diag_update_buffer(adapter, hdr, buffer_update,
260 	spin_unlock_irqrestore(&hdr->access_lock, flags);