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| author |   Anton Vorontsov <cbouatmailru@gmail.com> | 2008-07-30 02:05:23 +0400 |
|---|---|---|
| committer | Anton Vorontsov <cbouatmailru@gmail.com> | 2008-07-30 02:05:23 +0400 |
| commit | 9fec6060d9e48ed7db0dac0e16d0f0f0e615b7f6 (patch) | |
| tree | 74b41f31a08f6500ff3dfcf64ba21e2d9a8e87e5 /Documentation/filesystems/relay.txt | |
| parent | power_supply: Sharp SL-6000 (tosa) batteries support (diff) | |
| parent | Linux 2.6.27-rc1 (diff) | |
| download | linux-9fec6060d9e48ed7db0dac0e16d0f0f0e615b7f6.tar.xz linux-9fec6060d9e48ed7db0dac0e16d0f0f0e615b7f6.zip | |
Merge branch 'master' of /home/cbou/linux-2.6
Conflicts:
drivers/power/Kconfig
drivers/power/Makefile
Diffstat (limited to 'Documentation/filesystems/relay.txt')
| -rw-r--r-- | Documentation/filesystems/relay.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/filesystems/relay.txt b/Documentation/filesystems/relay.txt index 094f2d2f38b1..510b722667ac 100644 --- a/Documentation/filesystems/relay.txt +++ b/Documentation/filesystems/relay.txt @@ -294,6 +294,16 @@ user-defined data with a channel, and is immediately available (including in create_buf_file()) via chan->private_data or buf->chan->private_data. +Buffer-only channels +-------------------- + +These channels have no files associated and can be created with +relay_open(NULL, NULL, ...). Such channels are useful in scenarios such +as when doing early tracing in the kernel, before the VFS is up. In these +cases, one may open a buffer-only channel and then call +relay_late_setup_files() when the kernel is ready to handle files, +to expose the buffered data to the userspace. + Channel 'modes' --------------- |