From: Randy Dunlap <rdunlap@infradead.org> mainline inclusion from mainline-v6.6-rc1 commit 98dfdd9ee93995a408192dbbf3dd219ba23e3738 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7DHPO Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... ------------------------------------------------- Users of KERNFS should select it to enforce its being built, so do this to prevent a build error. In file included from ../kernel/sched/build_utility.c:97: ../kernel/sched/psi.c: In function 'psi_trigger_poll': ../kernel/sched/psi.c:1479:17: error: implicit declaration of function 'kernfs_generic_poll' [-Werror=implicit-function-declaration] 1479 | kernfs_generic_poll(t->of, wait); Fixes: aff037078eca ("sched/psi: use kernfs polling functions for PSI trigger polling") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Suren Baghdasaryan <surenb@google.com> Link: lore.kernel.org/r/202307310732.r65EQFY0-lkp@intel.com Signed-off-by: Lu Jialin <lujialin4@huawei.com> --- init/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/init/Kconfig b/init/Kconfig index 31fff350a288..94ee1e25bc4a 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -603,6 +603,7 @@ config TASK_IO_ACCOUNTING config PSI bool "Pressure stall information tracking" + select KERNFS help Collect metrics that indicate how overcommitted the CPU, memory, and IO capacity are in the system. -- 2.34.1