diff options
| author | Chengming Zhou <zhouchengming@bytedance.com> | 2022-08-26 00:41:09 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-09-09 11:08:33 +0200 |
| commit | 57899a6610e67ba26fa3251ebbef4a5ed21efc5d (patch) | |
| tree | cd4fe1689b8e0f4001966dba898bd9e809a86152 /include/linux/psi.h | |
| parent | 52b1364ba0b105122d6de0e719b36db705011ac1 (diff) | |
sched/psi: Consolidate cgroup_psi()
cgroup_psi() can't return psi_group for root cgroup, so we have many
open code "psi = cgroup_ino(cgrp) == 1 ? &psi_system : cgrp->psi".
This patch move cgroup_psi() definition to <linux/psi.h>, in which
we can return psi_system for root cgroup, so can handle all cgroups.
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Link: https://lore.kernel.org/r/20220825164111.29534-9-zhouchengming@bytedance.com
Diffstat (limited to 'include/linux/psi.h')
| -rw-r--r-- | include/linux/psi.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/psi.h b/include/linux/psi.h index fffd229fbf19..362a74ca1d3b 100644 --- a/include/linux/psi.h +++ b/include/linux/psi.h @@ -7,6 +7,7 @@ #include <linux/sched.h> #include <linux/poll.h> #include <linux/cgroup-defs.h> +#include <linux/cgroup.h> struct seq_file; struct css_set; @@ -30,6 +31,11 @@ __poll_t psi_trigger_poll(void **trigger_ptr, struct file *file, poll_table *wait); #ifdef CONFIG_CGROUPS +static inline struct psi_group *cgroup_psi(struct cgroup *cgrp) +{ + return cgroup_ino(cgrp) == 1 ? &psi_system : cgrp->psi; +} + int psi_cgroup_alloc(struct cgroup *cgrp); void psi_cgroup_free(struct cgroup *cgrp); void cgroup_move_task(struct task_struct *p, struct css_set *to); |