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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2017-02-13 19:42:41 -0600 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2017-03-08 09:38:19 +0100 |
| commit | 7c23b330011690705613a66a8239d2ca64a41d4d (patch) | |
| tree | 272edb45a2674e0df61c4a27e72b7bffc110b8fd /Documentation/filesystems | |
| parent | d83a7cb375eec21f04c83542395d08b2f6641da2 (diff) | |
| download | linux-7c23b330011690705613a66a8239d2ca64a41d4d.tar.gz linux-7c23b330011690705613a66a8239d2ca64a41d4d.tar.bz2 linux-7c23b330011690705613a66a8239d2ca64a41d4d.zip | |
livepatch: add /proc/<pid>/patch_state
Expose the per-task patch state value so users can determine which tasks
are holding up completion of a patching operation.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/proc.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index c94b4675d021..9036dbf16156 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -44,6 +44,7 @@ Table of Contents 3.8 /proc/<pid>/fdinfo/<fd> - Information about opened file 3.9 /proc/<pid>/map_files - Information about memory mapped files 3.10 /proc/<pid>/timerslack_ns - Task timerslack value + 3.11 /proc/<pid>/patch_state - Livepatch patch operation state 4 Configuring procfs 4.1 Mount options @@ -1887,6 +1888,23 @@ Valid values are from 0 - ULLONG_MAX An application setting the value must have PTRACE_MODE_ATTACH_FSCREDS level permissions on the task specified to change its timerslack_ns value. +3.11 /proc/<pid>/patch_state - Livepatch patch operation state +----------------------------------------------------------------- +When CONFIG_LIVEPATCH is enabled, this file displays the value of the +patch state for the task. + +A value of '-1' indicates that no patch is in transition. + +A value of '0' indicates that a patch is in transition and the task is +unpatched. If the patch is being enabled, then the task hasn't been +patched yet. If the patch is being disabled, then the task has already +been unpatched. + +A value of '1' indicates that a patch is in transition and the task is +patched. If the patch is being enabled, then the task has already been +patched. If the patch is being disabled, then the task hasn't been +unpatched yet. + ------------------------------------------------------------------------------ Configuring procfs |