diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/filesystems/devfs/boot-options |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'Documentation/filesystems/devfs/boot-options')
-rw-r--r-- | Documentation/filesystems/devfs/boot-options | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/Documentation/filesystems/devfs/boot-options b/Documentation/filesystems/devfs/boot-options new file mode 100644 index 00000000000..df3d33b03e0 --- /dev/null +++ b/Documentation/filesystems/devfs/boot-options @@ -0,0 +1,65 @@ +/* -*- auto-fill -*- */ + + Device File System (devfs) Boot Options + + Richard Gooch <rgooch@atnf.csiro.au> + + 18-AUG-2001 + + +When CONFIG_DEVFS_DEBUG is enabled, you can pass several boot options +to the kernel to debug devfs. The boot options are prefixed by +"devfs=", and are separated by commas. Spaces are not allowed. The +syntax looks like this: + +devfs=<option1>,<option2>,<option3> + +and so on. For example, if you wanted to turn on debugging for module +load requests and device registration, you would do: + +devfs=dmod,dreg + +You may prefix "no" to any option. This will invert the option. + + +Debugging Options +================= + +These requires CONFIG_DEVFS_DEBUG to be enabled. +Note that all debugging options have 'd' as the first character. By +default all options are off. All debugging output is sent to the +kernel logs. The debugging options do not take effect until the devfs +version message appears (just prior to the root filesystem being +mounted). + +These are the options: + +dmod print module load requests to <request_module> + +dreg print device register requests to <devfs_register> + +dunreg print device unregister requests to <devfs_unregister> + +dchange print device change requests to <devfs_set_flags> + +dilookup print inode lookup requests + +diget print VFS inode allocations + +diunlink print inode unlinks + +dichange print inode changes + +dimknod print calls to mknod(2) + +dall some debugging turned on + + +Other Options +============= + +These control the default behaviour of devfs. The options are: + +mount mount devfs onto /dev at boot time + +only disable non-devfs device nodes for devfs-capable drivers |