diff options
| -rw-r--r-- | Documentation/filesystems/proc.txt | 3 | ||||
| -rw-r--r-- | fs/proc/array.c | 10 |
2 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index cd465304bec4..b24fd9bccc99 100644 --- a/Documentation/filesystems/proc.txt +++ b/Documentation/filesystems/proc.txt @@ -182,6 +182,7 @@ read the file /proc/PID/status: VmSwap: 0 kB HugetlbPages: 0 kB CoreDumping: 0 + THP_enabled: 1 Threads: 1 SigQ: 0/28578 SigPnd: 0000000000000000 @@ -256,6 +257,8 @@ Table 1-2: Contents of the status files (as of 4.8) HugetlbPages size of hugetlb memory portions CoreDumping process's memory is currently being dumped (killing the process may lead to a corrupted core) + THP_enabled process is allowed to use THP (returns 0 when + PR_SET_THP_DISABLE is set on the process Threads number of threads SigQ number of signals queued/max. number for queue SigPnd bitmap of pending signals for the thread diff --git a/fs/proc/array.c b/fs/proc/array.c index 0ceb3b6b37e7..9d428d5a0ac8 100644 --- a/fs/proc/array.c +++ b/fs/proc/array.c @@ -392,6 +392,15 @@ static inline void task_core_dumping(struct seq_file *m, struct mm_struct *mm) seq_putc(m, '\n'); } +static inline void task_thp_status(struct seq_file *m, struct mm_struct *mm) +{ + bool thp_enabled = IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE); + + if (thp_enabled) + thp_enabled = !test_bit(MMF_DISABLE_THP, &mm->flags); + seq_printf(m, "THP_enabled:\t%d\n", thp_enabled); +} + int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, struct pid *pid, struct task_struct *task) { @@ -406,6 +415,7 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns, if (mm) { task_mem(m, mm); task_core_dumping(m, mm); + task_thp_status(m, mm); mmput(mm); } task_sig(m, task); |