+ Returns non-empty string on success, negarive error code otherwise.
Nit: typo, 'negarive'
+ if (ctx->kdamond) {
+ if (targetid_is_pid(ctx))
+ dbgfs_put_pids(targets, nr_targets);
+ ret = -EBUSY;
+ goto unlock_out;
I don't understand this block, what does EBUSY mean in this context?
+ if (sscanf(kbuf, "%s", kbuf) != 1) {
+ kfree(kbuf);
+ return -EINVAL;
+ }
Nit, this diverts from other patterns use elsewhere where error
conditions that need to free memory use a goto label.
