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Tsirkin" , Jason Wang , Xuan Zhuo , Eugenio =?utf-8?B?UMOpcmV6?= , Zi Yan Subject: Re: [PATCH v2 22/23] mm: rename CONFIG_MEMORY_BALLOON -> CONFIG_BALLOON Message-ID: <219f7be4-8355-4376-bf97-3410c6e23867@lucifer.local> References: <20260115092015.3928975-1-david@kernel.org> <20260115092015.3928975-23-david@kernel.org> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260115092015.3928975-23-david@kernel.org> X-ClientProxiedBy: LO4P123CA0271.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:195::6) To BL4PR10MB8229.namprd10.prod.outlook.com (2603:10b6:208:4e6::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL4PR10MB8229:EE_|CH3PR10MB7561:EE_ X-MS-Office365-Filtering-Correlation-Id: 959dbdf4-0107-4909-db2c-08de543db1b7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|366016|1800799024|7053199007; X-Microsoft-Antispam-Message-Info: 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wrote: > Let's make it consistent with the naming of the files but also with the > naming of CONFIG_BALLOON_MIGRATION. > > While at it, add a "/* CONFIG_BALLOON */". Probably not relevant but cheap for me to share :) so grepped for 'memory_balloon' and saw: include/uapi/linux/virtio_ids.h 44:#define VIRTIO_ID_MEMORY_BALLOON 13 /* virtio memory balloon */ This maybe relevant (I guess this isn't actually used anywhere?) though interesting there is also VIRTIO_ID_BALLOON... hmm :) The below doesn't look relevant at all. drivers/virt/vboxguest/vmmdev.h 326:#define VMMDEV_MEMORY_BALLOON_CHUNK_SIZE (1048576) 327:#define VMMDEV_MEMORY_BALLOON_CHUNK_PAGES (1048576 / 4096) 355: u64 phys_page[VMMDEV_MEMORY_BALLOON_CHUNK_PAGES]; drivers/virt/vboxguest/vboxguest_core.c 278: pages = kmalloc_array(VMMDEV_MEMORY_BALLOON_CHUNK_PAGES, 286: req->pages = VMMDEV_MEMORY_BALLOON_CHUNK_PAGES; 288: for (i = 0; i < VMMDEV_MEMORY_BALLOON_CHUNK_PAGES; i++) { 333: req->pages = VMMDEV_MEMORY_BALLOON_CHUNK_PAGES; 335: for (i = 0; i < VMMDEV_MEMORY_BALLOON_CHUNK_PAGES; i++) 344: for (i = 0; i < VMMDEV_MEMORY_BALLOON_CHUNK_PAGES; i++) > > Signed-off-by: David Hildenbrand (Red Hat) Otherwise LGTM, so: Reviewed-by: Lorenzo Stoakes > --- > arch/powerpc/platforms/pseries/Kconfig | 2 +- > drivers/misc/Kconfig | 2 +- > drivers/virtio/Kconfig | 2 +- > include/linux/vm_event_item.h | 4 ++-- > mm/Kconfig | 4 ++-- > mm/Makefile | 2 +- > mm/vmstat.c | 4 ++-- > 7 files changed, 10 insertions(+), 10 deletions(-) > > diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig > index 3e042218d6cd8..f7052b131a4c5 100644 > --- a/arch/powerpc/platforms/pseries/Kconfig > +++ b/arch/powerpc/platforms/pseries/Kconfig > @@ -120,7 +120,7 @@ config PPC_SMLPAR > config CMM > tristate "Collaborative memory management" > depends on PPC_SMLPAR > - select MEMORY_BALLOON > + select BALLOON > default y > help > Select this option, if you want to enable the kernel interface > diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig > index d7d41b054b982..5cc79d1517af5 100644 > --- a/drivers/misc/Kconfig > +++ b/drivers/misc/Kconfig > @@ -410,7 +410,7 @@ config DS1682 > config VMWARE_BALLOON > tristate "VMware Balloon Driver" > depends on VMWARE_VMCI && X86 && HYPERVISOR_GUEST > - select MEMORY_BALLOON > + select BALLOON > help > This is VMware physical memory management driver which acts > like a "balloon" that can be inflated to reclaim physical pages > diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig > index 6db5235a7693d..ce5bc0d9ea287 100644 > --- a/drivers/virtio/Kconfig > +++ b/drivers/virtio/Kconfig > @@ -112,7 +112,7 @@ config VIRTIO_PMEM > config VIRTIO_BALLOON > tristate "Virtio balloon driver" > depends on VIRTIO > - select MEMORY_BALLOON > + select BALLOON > select PAGE_REPORTING > help > This driver supports increasing and decreasing the amount > diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h > index fca34d3473b6b..22a139f82d75f 100644 > --- a/include/linux/vm_event_item.h > +++ b/include/linux/vm_event_item.h > @@ -122,13 +122,13 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, > THP_SWPOUT, > THP_SWPOUT_FALLBACK, > #endif > -#ifdef CONFIG_MEMORY_BALLOON > +#ifdef CONFIG_BALLOON > BALLOON_INFLATE, > BALLOON_DEFLATE, > #ifdef CONFIG_BALLOON_MIGRATION > BALLOON_MIGRATE, > #endif /* CONFIG_BALLOON_MIGRATION */ > -#endif > +#endif /* CONFIG_BALLOON */ > #ifdef CONFIG_DEBUG_TLBFLUSH > NR_TLB_REMOTE_FLUSH, /* cpu tried to flush others' tlbs */ > NR_TLB_REMOTE_FLUSH_RECEIVED,/* cpu received ipi for flush */ > diff --git a/mm/Kconfig b/mm/Kconfig > index 460a148d5b71a..8e23af521605e 100644 > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -593,7 +593,7 @@ config SPLIT_PMD_PTLOCKS > > # > # support for memory balloon > -config MEMORY_BALLOON > +config BALLOON > bool > > # > @@ -601,7 +601,7 @@ config MEMORY_BALLOON > config BALLOON_MIGRATION > bool "Allow for balloon memory migration" > default y > - depends on MIGRATION && MEMORY_BALLOON > + depends on MIGRATION && BALLOON > help > Allow for migration of pages inflated in a memory balloon such that > they can be allocated from memory areas only available for movable > diff --git a/mm/Makefile b/mm/Makefile > index 1e31e0a528dc1..0d85b10dbdde4 100644 > --- a/mm/Makefile > +++ b/mm/Makefile > @@ -122,7 +122,7 @@ obj-$(CONFIG_CMA) += cma.o > obj-$(CONFIG_NUMA) += numa.o > obj-$(CONFIG_NUMA_MEMBLKS) += numa_memblks.o > obj-$(CONFIG_NUMA_EMU) += numa_emulation.o > -obj-$(CONFIG_MEMORY_BALLOON) += balloon.o > +obj-$(CONFIG_BALLOON) += balloon.o > obj-$(CONFIG_PAGE_EXTENSION) += page_ext.o > obj-$(CONFIG_PAGE_TABLE_CHECK) += page_table_check.o > obj-$(CONFIG_CMA_DEBUGFS) += cma_debug.o > diff --git a/mm/vmstat.c b/mm/vmstat.c > index e96a344ab5974..0f64c898f79f8 100644 > --- a/mm/vmstat.c > +++ b/mm/vmstat.c > @@ -1419,13 +1419,13 @@ const char * const vmstat_text[] = { > [I(THP_SWPOUT)] = "thp_swpout", > [I(THP_SWPOUT_FALLBACK)] = "thp_swpout_fallback", > #endif > -#ifdef CONFIG_MEMORY_BALLOON > +#ifdef CONFIG_BALLOON > [I(BALLOON_INFLATE)] = "balloon_inflate", > [I(BALLOON_DEFLATE)] = "balloon_deflate", > #ifdef CONFIG_BALLOON_MIGRATION > [I(BALLOON_MIGRATE)] = "balloon_migrate", > #endif /* CONFIG_BALLOON_MIGRATION */ > -#endif /* CONFIG_MEMORY_BALLOON */ > +#endif /* CONFIG_BALLOON */ > #ifdef CONFIG_DEBUG_TLBFLUSH > [I(NR_TLB_REMOTE_FLUSH)] = "nr_tlb_remote_flush", > [I(NR_TLB_REMOTE_FLUSH_RECEIVED)] = "nr_tlb_remote_flush_received", > -- > 2.52.0 >