From e3b8b6a0d12cccf772113d6b5c1875192186fbd4 Mon Sep 17 00:00:00 2001 From: Qais Yousef Date: Tue, 5 Nov 2019 11:22:12 +0000 Subject: sched/core: Fix compilation error when cgroup not selected MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When cgroup is disabled the following compilation error was hit kernel/sched/core.c: In function ‘uclamp_update_active_tasks’: kernel/sched/core.c:1081:23: error: storage size of ‘it’ isn’t known struct css_task_iter it; ^~ kernel/sched/core.c:1084:2: error: implicit declaration of function ‘css_task_iter_start’; did you mean ‘__sg_page_iter_start’? [-Werror=implicit-function-declaration] css_task_iter_start(css, 0, &it); ^~~~~~~~~~~~~~~~~~~ __sg_page_iter_start kernel/sched/core.c:1085:14: error: implicit declaration of function ‘css_task_iter_next’; did you mean ‘__sg_page_iter_next’? [-Werror=implicit-function-declaration] while ((p = css_task_iter_next(&it))) { ^~~~~~~~~~~~~~~~~~ __sg_page_iter_next kernel/sched/core.c:1091:2: error: implicit declaration of function ‘css_task_iter_end’; did you mean ‘get_task_cred’? [-Werror=implicit-function-declaration] css_task_iter_end(&it); ^~~~~~~~~~~~~~~~~ get_task_cred kernel/sched/core.c:1081:23: warning: unused variable ‘it’ [-Wunused-variable] struct css_task_iter it; ^~ cc1: some warnings being treated as errors make[2]: *** [kernel/sched/core.o] Error 1 Fix by protetion uclamp_update_active_tasks() with CONFIG_UCLAMP_TASK_GROUP Fixes: babbe170e053 ("sched/uclamp: Update CPU's refcount on TG's clamp changes") Reported-by: Randy Dunlap Signed-off-by: Qais Yousef Signed-off-by: Peter Zijlstra (Intel) Tested-by: Randy Dunlap Cc: Steven Rostedt Cc: Ingo Molnar Cc: Vincent Guittot Cc: Patrick Bellasi Cc: Mel Gorman Cc: Dietmar Eggemann Cc: Juri Lelli Cc: Ben Segall Link: https://lkml.kernel.org/r/20191105112212.596-1-qais.yousef@arm.com --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/sched') diff --git a/kernel/sched/core.c b/kernel/sched/core.c index dd05a378631a..afd4d8028771 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1073,6 +1073,7 @@ uclamp_update_active(struct task_struct *p, enum uclamp_id clamp_id) task_rq_unlock(rq, p, &rf); } +#ifdef CONFIG_UCLAMP_TASK_GROUP static inline void uclamp_update_active_tasks(struct cgroup_subsys_state *css, unsigned int clamps) @@ -1091,7 +1092,6 @@ uclamp_update_active_tasks(struct cgroup_subsys_state *css, css_task_iter_end(&it); } -#ifdef CONFIG_UCLAMP_TASK_GROUP static void cpu_util_update_eff(struct cgroup_subsys_state *css); static void uclamp_update_root_tg(void) { -- cgit v1.2.3