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RELAY_LATE_SETUP_FIL(9) relay interface support RELAY_LATE_SETUP_FIL(9)

NAME

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.

COPYRIGHT

May 2018 Kernel Hackers Manual 4.9.