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Tue, 21 Mar 2023 15:07:38 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id kT+nIjrIGWT/TAAAMHmgww (envelope-from ); Tue, 21 Mar 2023 15:07:38 +0000 Message-ID: Date: Tue, 21 Mar 2023 16:07:38 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 Subject: Re: [PATCH] mm/slab: Fix undefined init_cache_node_node() for NUMA and !SMP Content-Language: en-US To: Geert Uytterhoeven , John Paul Adrian Glaubitz Cc: Dave Hansen , Arnd Bergmann , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, Randy Dunlap References: <67261c513706241d479b8b4cf46eb4e6fb0417ba.1679387262.git.geert+renesas@glider.be> From: Vlastimil Babka In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: A337120008 X-Rspamd-Server: rspam01 X-Stat-Signature: xpz5481niup58u43fbtdmbrghehfc53y X-HE-Tag: 1679411260-904911 X-HE-Meta: U2FsdGVkX1/xiHvAKNOKh6kEVvllLqqeY0HO68AxU5DbM2ZzM115lOFNcA4b9llpPF0VTA/OUbT9O/gYmflVis4kBNfShyNNsrL3+hiyshcVwptAQj+4OcvMzst6f+cSDfAYfhXoubFGLkhk8Wu8gAlxKsGGfwgLxYq8i36S4g7PP/0w6Qi+1WktNKvOE0nuYJZVq/3mmm1vR8R6Ha7TIg7JEqKvwOG+WFm4xMxZnmuZB5gtFdeeKcYpMCPvg5Gv94hMudbnWSTMw2PzHNyTD9QZPFbtlBknCRuqBNyvsTDhnNPRXzE5KgVzySUprfGFBpVRrukNAzahf9FHei3NF74vU8FkGG4Qe3zrjgaiRn57EbmueY/PZ1aGov9AHKnnKA+deuXQHQcz1PGu1aoQC53kzIAE4i6fDuBJk1pLdla9uMfIUV+apSIVyneKOHZRrCSIJ+vjbRheMGxEEFSvJj0ljqgtRG0EbgsE17OWXxmfnk8HqxjbPLAwaxnAj3RLrNQsTRrzBxKc+V3LdHa2y6LxjOzBYVv9Mg1KcvFzFudD+WGKbX5na91EkuKmZYYVo36PjpX07A/gDTVYTMDMpfLv1VDboO6TKm3YTKQUMQxqNsHebKbyUa6O30FYlFb4CZN12nYVqPyCLTvDwdxS2QZ8lRc1PoBE0osRYXT2fyJZLgQjYJre9bCz6bwM217YyLX2DUMbz7zJunz6p16IeTSz34KsUWo5lruHd8CYyajrotXRlevg6zLBrAcKV+mq4ed4w5LwdMlyg1HvL5Fote9xc47m2GVV0JMSFuQgwk7Hhgm4SdpnVNIVTaBBlL9vGRBNl5yerTJFEK4mSnH68f+Aayrg1ntaLn7lg/iGHAD71Atl/qtpAjzcVveYucS5YGgJ5+vWjogD3cP6w6n++jabvR/E/YMRtXOa4+r6VssxI9GN3LBTy+Oii3AbhV3O5AlkRg7PSKaLXRtdTVL Qi/DGFUD 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 3/21/23 09:50, Geert Uytterhoeven wrote: > Hi Adrian, > > On Tue, Mar 21, 2023 at 9:47 AM John Paul Adrian Glaubitz > wrote: >> On Tue, 2023-03-21 at 09:30 +0100, Geert Uytterhoeven wrote: >> > sh/migor_defconfig: >> > >> > mm/slab.c: In function ‘slab_memory_callback’: >> > mm/slab.c:1127:23: error: implicit declaration of function ‘init_cache_node_node’; did you mean ‘drain_cache_node_node’? [-Werror=implicit-function-declaration] >> > 1127 | ret = init_cache_node_node(nid); >> > | ^~~~~~~~~~~~~~~~~~~~ >> > | drain_cache_node_node >> > >> > The #ifdef condition protecting the definition of init_cache_node_node() >> > no longer matches the conditions protecting the (multiple) users. >> > >> > Fix this by syncing the conditions. >> > >> > Fixes: 76af6a054da40553 ("mm/migrate: add CPU hotplug to demotion #ifdef") >> > Reported-by: Randy Dunlap >> > Link: https://lore.kernel.org/r/b5bdea22-ed2f-3187-6efe-0c72330270a4@infradead.org >> > Signed-off-by: Geert Uytterhoeven >> > --- >> > mm/slab.c | 2 +- >> > 1 file changed, 1 insertion(+), 1 deletion(-) >> > >> > diff --git a/mm/slab.c b/mm/slab.c >> > index ba454246ee13dd4d..de1523a78f2e7367 100644 >> > --- a/mm/slab.c >> > +++ b/mm/slab.c >> > @@ -839,7 +839,7 @@ static int init_cache_node(struct kmem_cache *cachep, int node, gfp_t gfp) >> > return 0; >> > } >> > >> > -#if (defined(CONFIG_NUMA) && defined(CONFIG_MEMORY_HOTPLUG)) || defined(CONFIG_SMP) >> > +#if defined(CONFIG_NUMA) || defined(CONFIG_SMP) >> > /* >> > * Allocates and initializes node for a node on each slab cache, used for >> > * either memory or cpu hotplug. If memory is being hot-added, the kmem_cache_node >> >> FWIW, the other #ifdef starting at drain_cache_node_node() closes with "#endif /* CONFIG_NUMA */", >> while this #ifdef just ends with "#endif". Just in case you want to make this consistent. > > I guess that's fine, as init_cache_node_node() is a small function. > #endif comments are typically used when the start and end markers > do not fit on your (80x25 ;-) screen. Agreed with this reasoning. >> Reviewed-by: John Paul Adrian Glaubitz > > Thanks! Applied to slab/for-6.3-rc4/fixes, thanks! > Gr{oetje,eeting}s, > > Geert >