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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2017-02-14 04:42:41 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2017-03-08 11:38:19 +0300 |
| commit | 7c23b330011690705613a66a8239d2ca64a41d4d (patch) | |
| tree | 272edb45a2674e0df61c4a27e72b7bffc110b8fd /fs/proc | |
| parent | d83a7cb375eec21f04c83542395d08b2f6641da2 (diff) | |
| download | linux-7c23b330011690705613a66a8239d2ca64a41d4d.tar.xz | |
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 'fs/proc')
| -rw-r--r-- | fs/proc/base.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index c87b6b9a8a76..9e3ac5c11780 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2834,6 +2834,15 @@ static int proc_pid_personality(struct seq_file *m, struct pid_namespace *ns, return err; } +#ifdef CONFIG_LIVEPATCH +static int proc_pid_patch_state(struct seq_file *m, struct pid_namespace *ns, + struct pid *pid, struct task_struct *task) +{ + seq_printf(m, "%d\n", task->patch_state); + return 0; +} +#endif /* CONFIG_LIVEPATCH */ + /* * Thread groups */ @@ -2933,6 +2942,9 @@ static const struct pid_entry tgid_base_stuff[] = { REG("timers", S_IRUGO, proc_timers_operations), #endif REG("timerslack_ns", S_IRUGO|S_IWUGO, proc_pid_set_timerslack_ns_operations), +#ifdef CONFIG_LIVEPATCH + ONE("patch_state", S_IRUSR, proc_pid_patch_state), +#endif }; static int proc_tgid_base_readdir(struct file *file, struct dir_context *ctx) @@ -3315,6 +3327,9 @@ static const struct pid_entry tid_base_stuff[] = { REG("projid_map", S_IRUGO|S_IWUSR, proc_projid_map_operations), REG("setgroups", S_IRUGO|S_IWUSR, proc_setgroups_operations), #endif +#ifdef CONFIG_LIVEPATCH + ONE("patch_state", S_IRUSR, proc_pid_patch_state), +#endif }; static int proc_tid_base_readdir(struct file *file, struct dir_context *ctx) |