relay_late_setup_files (9) Linux Manual Page
relay_late_setup_files – triggers file creation
Synopsis
int relay_late_setup_files(struct rchan *chan, const char *base_filename, struct dentry *parent);Arguments
chan
-
- channel to operate on
base_filename
- base name of files to create
parent
- dentry of parent directory, NULL for root directory
Description
Returns 0 if successful, non-zero otherwise.
Use to setup files for a previously buffer-only channel created by relay_open with a NULL parent dentry.
For example, this is useful for perfomring early tracing in kernel, before VFS is up and then exposing the early results once the dentry is available.