From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 12 Sep 2018 21:42:22 -0400 From: Johannes Weiner To: Randy Dunlap Cc: akpm@linux-foundation.org, broonie@kernel.org, mhocko@suse.cz, sfr@canb.auug.org.au, linux-next@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, mm-commits@vger.kernel.org Subject: Re: mmotm 2018-09-12-16-40 uploaded (psi) Message-ID: <20180913014222.GA2370@cmpxchg.org> References: <20180912234039.Xa5RS%akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: Hi Randy, Thanks for the report. On Wed, Sep 12, 2018 at 05:45:08PM -0700, Randy Dunlap wrote: > Multiple build errors when CONFIG_SMP is not set: (this is on i386 fwiw) > > in the psi (pressure) patches, I guess: > > In file included from ../kernel/sched/sched.h:1367:0, > from ../kernel/sched/core.c:8: > ../kernel/sched/stats.h: In function 'psi_task_tick': > ../kernel/sched/stats.h:135:33: error: 'struct rq' has no member named 'cpu' > psi_memstall_tick(rq->curr, rq->cpu); This needs to use the SMP/UP config-aware accessor. Signed-off-by: Johannes Weiner --- diff --git a/kernel/sched/stats.h b/kernel/sched/stats.h index 2e07d8f59b3e..4904c4677000 100644 --- a/kernel/sched/stats.h +++ b/kernel/sched/stats.h @@ -132,7 +132,7 @@ static inline void psi_task_tick(struct rq *rq) return; if (unlikely(rq->curr->flags & PF_MEMSTALL)) - psi_memstall_tick(rq->curr, rq->cpu); + psi_memstall_tick(rq->curr, cpu_of(rq)); } #else /* CONFIG_PSI */ static inline void psi_enqueue(struct task_struct *p, bool wakeup) {}