search for: address_space

Hello, We would like to propose a way for improving the diagnostics for address_space by being able to pass strings as an argument to it instead of just an integer. This was initially proposed before (http://lists.llvm.org/pipermail/cfe-dev/2018-August/058702.html) but did not focus on it at the time. Reasoning: Clang's __attribute__((address_space(...))) feature uses an arbitr...

...entry in the table when writing to files or displaying. > > Jacob Lifshay > > On Thu, Jan 10, 2019, 13:54 Leonard Chan via llvm-dev <llvm-dev at lists.llvm.org wrote: >> >> Hello, >> >> We would like to propose a way for improving the diagnostics for >> address_space by being able to pass strings as an argument to it >> instead of just an integer. This was initially proposed before >> (http://lists.llvm.org/pipermail/cfe-dev/2018-August/058702.html) but >> did not focus on it at the time. >> >> Reasoning: >> Clang's __att...

...loon_compaction.h +++ b/include/linux/balloon_compaction.h @@ -62,6 +62,7 @@ struct balloon_dev_info { struct list_head pages; /* Pages enqueued & handled to Host */ int (*migratepage)(struct balloon_dev_info *, struct page *newpage, struct page *page, enum migrate_mode mode); + struct address_space *mapping; }; extern struct page *balloon_page_enqueue(struct balloon_dev_info *b_dev_info); @@ -76,10 +77,22 @@ static inline void balloon_devinfo_init(struct balloon_dev_info *balloon) } #ifdef CONFIG_BALLOON_COMPACTION -extern bool balloon_page_isolate(struct page *page); -extern void bal...

...loon_compaction.h +++ b/include/linux/balloon_compaction.h @@ -62,6 +62,7 @@ struct balloon_dev_info { struct list_head pages; /* Pages enqueued & handled to Host */ int (*migratepage)(struct balloon_dev_info *, struct page *newpage, struct page *page, enum migrate_mode mode); + struct address_space *mapping; }; extern struct page *balloon_page_enqueue(struct balloon_dev_info *b_dev_info); @@ -76,10 +77,22 @@ static inline void balloon_devinfo_init(struct balloon_dev_info *balloon) } #ifdef CONFIG_BALLOON_COMPACTION -extern bool balloon_page_isolate(struct page *page); -extern void bal...

...nclude/linux/balloon_compaction.h > @@ -62,6 +62,7 @@ struct balloon_dev_info { > struct list_head pages; /* Pages enqueued & handled to Host */ > int (*migratepage)(struct balloon_dev_info *, struct page *newpage, > struct page *page, enum migrate_mode mode); > + struct address_space *mapping; > }; > > extern struct page *balloon_page_enqueue(struct balloon_dev_info *b_dev_info); > @@ -76,10 +77,22 @@ static inline void balloon_devinfo_init(struct balloon_dev_info *balloon) > } > > #ifdef CONFIG_BALLOON_COMPACTION > -extern bool balloon_page_isol...

...there a way to create methods that can be called with pointers to different address spaces? It seems there is no way to declare these in C++ using GNU attributes, and addrspace() seems to not be supported by C++11 attribute syntax, which could possibly express this. > You can use __attribute__((address_space(N)) I have already been using that syntax to annotate pointer declarations. However I don’t think it can be applied to methods the way I was thinking. At least it doesn’t actually change them: struct Foo { long x; __attribute__((address_space(7))) void bar(long y) { printf("%ld %l...

...7 Compaction stalls 747 499 Compaction success 244 145 Compaction failures 503 354 Compaction pages moved 370888 474837 Compaction move failure 77378 65259 ===END stress-highalloc Rafael Aquini (7): mm: adjust address_space_operations.migratepage() return code mm: redefine address_space.assoc_mapping mm: introduce a common interface for balloon pages mobility mm: introduce compaction and migration for ballooned pages virtio_balloon: introduce migration primitives to balloon pages mm: introduce putback_movabl...

...7 Compaction stalls 747 499 Compaction success 244 145 Compaction failures 503 354 Compaction pages moved 370888 474837 Compaction move failure 77378 65259 ===END stress-highalloc Rafael Aquini (7): mm: adjust address_space_operations.migratepage() return code mm: redefine address_space.assoc_mapping mm: introduce a common interface for balloon pages mobility mm: introduce compaction and migration for ballooned pages virtio_balloon: introduce migration primitives to balloon pages mm: introduce putback_movabl...

...7 Compaction stalls 747 499 Compaction success 244 145 Compaction failures 503 354 Compaction pages moved 370888 474837 Compaction move failure 77378 65259 ===END stress-highalloc Rafael Aquini (7): mm: adjust address_space_operations.migratepage() return code mm: redefine address_space.assoc_mapping mm: introduce a common interface for balloon pages mobility mm: introduce compaction and migration for ballooned pages virtio_balloon: introduce migration primitives to balloon pages mm: introduce putback_movabl...

...7 Compaction stalls 747 499 Compaction success 244 145 Compaction failures 503 354 Compaction pages moved 370888 474837 Compaction move failure 77378 65259 ===END stress-highalloc Rafael Aquini (7): mm: adjust address_space_operations.migratepage() return code mm: redefine address_space.assoc_mapping mm: introduce a common interface for balloon pages mobility mm: introduce compaction and migration for ballooned pages virtio_balloon: introduce migration primitives to balloon pages mm: introduce putback_movabl...

...= 1; - mlog_entry("(0x%p, %lu)\n", file, (page ? page->index : 0)); + mlog_entry("(0x%p, %lu)\n", file, page->index); ret = ocfs2_inode_lock_with_page(inode, NULL, 0, page); if (ret != 0) { @@ -344,17 +357,21 @@ static int ocfs2_readpages(struct file *filp, struct address_space *mapping, loff_t start; struct page *last; + mlog_entry("(0x%p, 0x%p, 0x%p, %u)\n", filp, mapping, pages, nr_pages); + /* * Use the nonblocking flag for the dlm code to avoid page * lock inversion, but don't bother with retrying. */ ret = ocfs2_inode_lock_full(inode...

...= 1; - mlog_entry("(0x%p, %lu)\n", file, (page ? page->index : 0)); + mlog_entry("(0x%p, %lu)\n", file, page->index); ret = ocfs2_inode_lock_with_page(inode, NULL, 0, page); if (ret != 0) { @@ -344,17 +359,21 @@ static int ocfs2_readpages(struct file *filp, struct address_space *mapping, loff_t start; struct page *last; + mlog_entry("(0x%p, 0x%p, 0x%p, %u)\n", filp, mapping, pages, nr_pages); + /* * Use the nonblocking flag for the dlm code to avoid page * lock inversion, but don't bother with retrying. */ ret = ocfs2_inode_lock_full(inode...

...= 1; - mlog_entry("(0x%p, %lu)\n", file, (page ? page->index : 0)); + mlog_entry("(0x%p, %lu)\n", file, page->index); ret = ocfs2_inode_lock_with_page(inode, NULL, 0, page); if (ret != 0) { @@ -344,17 +359,21 @@ static int ocfs2_readpages(struct file *filp, struct address_space *mapping, loff_t start; struct page *last; + mlog_entry("(0x%p, 0x%p, 0x%p, %u)\n", filp, mapping, pages, nr_pages); + /* * Use the nonblocking flag for the dlm code to avoid page * lock inversion, but don't bother with retrying. */ ret = ocfs2_inode_lock_full(inode...

...0-order page, reserved memory, vmalloc and so on) but if there are lots of non-movable pages in system, their solutions are void in the long run. So, this patch is to support facility to change non-movable pages with movable. For the feature, this patch introduces functions related to migration to address_space_operations as well as some page flags. If a driver want to make own pages movable, it should define three functions which are function pointers of struct address_space_operations. 1. bool (*isolate_page) (struct page *page, isolate_mode_t mode); What VM expects on isolate_page function of driver...

...0-order page, reserved memory, vmalloc and so on) but if there are lots of non-movable pages in system, their solutions are void in the long run. So, this patch is to support facility to change non-movable pages with movable. For the feature, this patch introduces functions related to migration to address_space_operations as well as some page flags. If a driver want to make own pages movable, it should define three functions which are function pointers of struct address_space_operations. 1. bool (*isolate_page) (struct page *page, isolate_mode_t mode); What VM expects on isolate_page function of driver...

Hello, What is the correct way to use address_space attribute? For CLANG, I used the below code, but when I tried the same with LLVM, I got a warning. Thanks in advance, Juan Carlos ----------------------------- Code used: #define GS_RELATIVE __attribute__((address_space(256))) int foo(int GS_RELATIVE *P) { return *P; } int main(){ r...

...,6 +63,7 @@ struct balloon_dev_info { > struct list_head pages; /* Pages enqueued & handled to Host */ > int (*migratepage)(struct balloon_dev_info *, struct page *newpage, > struct page *page, enum migrate_mode mode); > + struct address_space *mapping; > }; > > extern struct page *balloon_page_enqueue(struct balloon_dev_info *b_dev_info); > @@ -73,24 +75,37 @@ static inline void balloon_devinfo_init(struct balloon_dev_info *balloon) > spin_lock_init(&balloon->pages_lock); > INIT_LIST_HEAD(&...

...,6 +63,7 @@ struct balloon_dev_info { > struct list_head pages; /* Pages enqueued & handled to Host */ > int (*migratepage)(struct balloon_dev_info *, struct page *newpage, > struct page *page, enum migrate_mode mode); > + struct address_space *mapping; > }; > > extern struct page *balloon_page_enqueue(struct balloon_dev_info *b_dev_info); > @@ -73,24 +75,37 @@ static inline void balloon_devinfo_init(struct balloon_dev_info *balloon) > spin_lock_init(&balloon->pages_lock); > INIT_LIST_HEAD(&...

...0-order page, reserved memory, vmalloc and so on) but if there are lots of non-movable pages in system, their solutions are void in the long run. So, this patch is to support facility to change non-movable pages with movable. For the feature, this patch introduces functions related to migration to address_space_operations as well as some page flags. If a driver want to make own pages movable, it should define three functions which are function pointers of struct address_space_operations. 1. bool (*isolate_page) (struct page *page, isolate_mode_t mode); What VM expects on isolate_page function of driver...

...a new keywords 'foo' and 'bar' to the front of > c variables and function return types such that the following would be > valid: > foo void* a; > foo void* somefunc(){...} > bar int b; > int somefunc2(bar int*){...} How about putting #define foo __attribute__((address_space(256))) #define bar __attribute__((address_space(257))) in some header? (Or on the command line, or in clang's default #defines, ...) Though maybe they'd need to be in a slightly different place; the example in the documentation (http://clang.llvm.org/docs/LanguageExtensions.html) is #...