kernel/linux.git/tools/include/uapi/linux/fs.h, branch v6.12.80

tools: sync uapi/linux/fs.h header into tools subdir

2024-07-12T22:52:12+00:00

We need this UAPI header in tools/include subdirectory for using it from BPF selftests. Link: https://lkml.kernel.org/r/20240627170900.1672542-6-andrii@kernel.org Signed-off-by: Andrii Nakryiko Acked-by: Liam R. Howlett Cc: Alexey Dobriyan Cc: Al Viro Cc: Christian Brauner Cc: Greg Kroah-Hartman Cc: Mike Rapoport (IBM) Cc: Suren Baghdasaryan Cc: Andi Kleen Cc: Arnd Bergmann Cc: Stephen Rothwell Signed-off-by: Andrew Morton

selftests/mm: fix vm_util.c build failures: add snapshot of fs.h

2024-07-04T02:30:07+00:00

On Ubuntu 23.04, on a clean git tree, the selftests/mm build fails due 10 or 20 missing items, all of which are found in fs.h, which is created via "make headers". However, as per [1], the idea is to stop requiring "make headers", and instead, take a snapshot of the files and check them in. Here are a few of the build errors: vm_util.c:34:21: error: variable has incomplete type 'struct pm_scan_arg' struct pm_scan_arg arg; ... vm_util.c:45:28: error: use of undeclared identifier 'PAGE_IS_WPALLOWED' ... vm_util.c:55:21: error: variable has incomplete type 'struct page_region' ... vm_util.c:105:20: error: use of undeclared identifier 'PAGE_IS_SOFT_DIRTY' To fix this, add fs.h, taken from a snapshot of ./usr/include/linux/fs.h after running "make headers". [1] commit e076eaca5906 ("selftests: break the dependency upon local header files") Link: https://lkml.kernel.org/r/20240618022422.804305-5-jhubbard@nvidia.com Signed-off-by: John Hubbard Acked-by: David Hildenbrand Cc: Andrei Vagin Cc: Axel Rasmussen Cc: Christian Brauner Cc: Jeff Xu Cc: Kees Cook Cc: Kent Overstreet Cc: Liam R. Howlett Cc: Muhammad Usama Anjum Cc: Peter Xu Cc: Rich Felker Cc: Shuah Khan Signed-off-by: Andrew Morton

perf beauty: Move uapi/linux/fs.h copy out of the directory used to build perf

2024-03-21T13:41:27+00:00

It is mostly used only to generate string tables, not to build perf, so move it to the tools/perf/trace/beauty/include/ hierarchy, that is used just for scraping. The only case where it was being used to build was in tools/perf/trace/beauty/sync_file_range.c, because some older systems doesn't have the SYNC_FILE_RANGE_WRITE_AND_WAIT define, just use the system's linux/fs.h header instead, defining it if not available. This is a something that should've have happened, as happened with the linux/socket.h scrapper, do it now as Ian suggested while doing an audit/refactor session in the headers used by perf. No other tools/ living code uses it, just coming from either 'make install_headers' or from the system /usr/include/ directory. Suggested-by: Ian Rogers Reviewed-by: Ian Rogers Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/lkml/CAP-5=fWZVrpRufO4w-S4EcSi9STXcTAN2ERLwTSN7yrSSA-otQ@mail.gmail.com Signed-off-by: Arnaldo Carvalho de Melo

fs/proc/task_mmu: report SOFT_DIRTY bits through the PAGEMAP_SCAN ioctl

2023-12-11T00:51:35+00:00

The PAGEMAP_SCAN ioctl returns information regarding page table entries. It is more efficient compared to reading pagemap files. CRIU can start to utilize this ioctl, but it needs info about soft-dirty bits to track memory changes. We are aware of a new method for tracking memory changes implemented in the PAGEMAP_SCAN ioctl. For CRIU, the primary advantage of this method is its usability by unprivileged users. However, it is not feasible to transparently replace the soft-dirty tracker with the new one. The main problem here is userfault descriptors that have to be preserved between pre-dump iterations. It means criu continues supporting the soft-dirty method to avoid breakage for current users. The new method will be implemented as a separate feature. [avagin@google.com: update tools/include/uapi/linux/fs.h] Link: https://lkml.kernel.org/r/20231107164139.576046-1-avagin@google.com Link: https://lkml.kernel.org/r/20231106220959.296568-1-avagin@google.com Signed-off-by: Andrei Vagin Reviewed-by: Muhammad Usama Anjum Cc: Michał Mirosław Signed-off-by: Andrew Morton

tools headers UAPI: update linux/fs.h with the kernel sources

2023-10-18T21:34:13+00:00

New IOCTL and macros has been added in the kernel sources. Update the tools header file as well. Link: https://lkml.kernel.org/r/20230821141518.870589-5-usama.anjum@collabora.com Signed-off-by: Muhammad Usama Anjum Cc: Alex Sierra Cc: Al Viro Cc: Andrei Vagin Cc: Axel Rasmussen Cc: Christian Brauner Cc: Cyrill Gorcunov Cc: Dan Williams Cc: David Hildenbrand Cc: Greg Kroah-Hartman Cc: Gustavo A. R. Silva Cc: "Liam R. Howlett" Cc: Matthew Wilcox Cc: Michal Miroslaw Cc: Michał Mirosław Cc: Mike Rapoport (IBM) Cc: Nadav Amit Cc: Pasha Tatashin Cc: Paul Gofman Cc: Peter Xu Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: Yang Shi Cc: Yun Zhou Signed-off-by: Andrew Morton

treewide: uapi: Replace zero-length arrays with flexible-array members

2022-06-28T19:26:05+00:00

There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. This code was transformed with the help of Coccinelle: (linux-5.19-rc2$ spatch --jobs $(getconf _NPROCESSORS_ONLN) --sp-file script.cocci --include-headers --dir . > output.patch) @@ identifier S, member, array; type T1, T2; @@ struct S { ... T1 member; T2 array[ - 0 ]; }; -fstrict-flex-arrays=3 is coming and we need to land these changes to prevent issues like these in the short future: ../fs/minix/dir.c:337:3: warning: 'strcpy' will always overflow; destination buffer has size 0, but the source string has length 2 (including NUL byte) [-Wfortify-source] strcpy(de3->name, "."); ^ Since these are all [0] to [] changes, the risk to UAPI is nearly zero. If this breaks anything, we can use a union with a new member name. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/78 Build-tested-by: kernel test robot Link: https://lore.kernel.org/lkml/62b675ec.wKX6AOZ6cbE71vtF%25lkp@intel.com/ Acked-by: Dan Williams # For ndctl.h Signed-off-by: Gustavo A. R. Silva

tools headers UAPI: Sync linux/fs.h with the kernel sources

2021-09-11T19:14:53+00:00

To pick the change in: 7957d93bf32bc211 ("block: add ioctl to read the disk sequence number") It adds a new ioctl, but we are still not using that to generate tables for 'perf trace', so no changes in tooling. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Cc: Jens Axboe Cc: Matteo Croce Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync linux/fs.h with the kernel sources

2021-05-21T19:00:31+00:00

To pick the trivial change in: 63c8af5687f6b1b7 ("block: uapi: fix comment about block device ioctl") This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Cc: Damien Le Moal Cc: Jens Axboe Signed-off-by: Arnaldo Carvalho de Melo

tools headers UAPI: Sync linux/fs.h with the kernel sources

2020-06-17T16:23:02+00:00

To pick the changes from: b383a73f2b83 ("fs/ext4: Introduce DAX inode flag") And silence this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h It causes various beautifiers for things like fspick, fsmount, etc (see below) to get rebuilt, but this specific change doesn't make 'perf trace' be capable of decoding anything new, as we still don't decode what comes from ioctls, just its cmds. Details about the update: $ cp include/uapi/linux/fs.h tools/include/uapi/linux/fs.h $ git diff diff --git a/tools/include/uapi/linux/fs.h b/tools/include/uapi/linux/fs.h index 379a612f8f1d..f44eb0a04afd 100644 --- a/tools/include/uapi/linux/fs.h +++ b/tools/include/uapi/linux/fs.h @@ -262,6 +262,7 @@ struct fsxattr { #define FS_EA_INODE_FL 0x00200000 /* Inode used for large EA */ #define FS_EOFBLOCKS_FL 0x00400000 /* Reserved for ext4 */ #define FS_NOCOW_FL 0x00800000 /* Do not cow file */ +#define FS_DAX_FL 0x02000000 /* Inode is DAX */ #define FS_INLINE_DATA_FL 0x10000000 /* Reserved for ext4 */ #define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ #define FS_CASEFOLD_FL 0x40000000 /* Folder is case insensitive */ $ m make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j8' parallel build INSTALL GTK UI CC /tmp/build/perf/builtin-trace.o DESCEND plugins CC /tmp/build/perf/trace/beauty/fsmount.o CC /tmp/build/perf/trace/beauty/fspick.o CC /tmp/build/perf/trace/beauty/mount_flags.o CC /tmp/build/perf/trace/beauty/move_mount.o CC /tmp/build/perf/trace/beauty/renameat.o CC /tmp/build/perf/trace/beauty/sync_file_range.o INSTALL trace_plugins LD /tmp/build/perf/trace/beauty/perf-in.o LD /tmp/build/perf/perf-in.o LINK /tmp/build/perf/perf Cc: Adrian Hunter Cc: Ira Weiny Cc: Jiri Olsa Cc: Namhyung Kim Cc: Theodore Ts'o Signed-off-by: Arnaldo Carvalho de Melo

tools headers uapi: Sync linux/fs.h with the kernel sources

2019-09-30T20:29:22+00:00

To pick the changes from: 78a1b96bcf7a ("fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS ioctl") 23c688b54016 ("fscrypt: allow unprivileged users to add/remove keys for v2 policies") 5dae460c2292 ("fscrypt: v2 encryption policy support") 5a7e29924dac ("fscrypt: add FS_IOC_GET_ENCRYPTION_KEY_STATUS ioctl") b1c0ec3599f4 ("fscrypt: add FS_IOC_REMOVE_ENCRYPTION_KEY ioctl") 22d94f493bfb ("fscrypt: add FS_IOC_ADD_ENCRYPTION_KEY ioctl") 3b6df59bc4d2 ("fscrypt: use FSCRYPT_* definitions, not FS_*") 2336d0deb2d4 ("fscrypt: use FSCRYPT_ prefix for uapi constants") 7af0ab0d3aab ("fs, fscrypt: move uapi definitions to new header ") That don't trigger any changes in tooling, as it so far is used only for: $ grep -l 'fs\.h' tools/perf/trace/beauty/*.sh | xargs grep regex= tools/perf/trace/beauty/rename_flags.sh:regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+RENAME_([[:alnum:]_]+)[[:space:]]+$1[[:space:]]*<<[[:space:]]*([[:xdigit:]]+)[[:space:]]*$[[:space:]]*.*' tools/perf/trace/beauty/sync_file_range.sh:regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+SYNC_FILE_RANGE_([[:alnum:]_]+)[[:space:]]+([[:xdigit:]]+)[[:space:]]*.*' tools/perf/trace/beauty/usbdevfs_ioctl.sh:regex="^#[[:space:]]*define[[:space:]]+USBDEVFS_(\w+)($\w+$)?[[:space:]]+_IO[CWR]{0,2}\([[:space:]]*(_IOC_\w+,[[:space:]]*)?'U'[[:space:]]*,[[:space:]]*([[:digit:]]+).*" tools/perf/trace/beauty/usbdevfs_ioctl.sh:regex="^#[[:space:]]*define[[:space:]]+USBDEVFS_(\w+)[[:space:]]+_IO[WR]{0,2}\([[:space:]]*'U'[[:space:]]*,[[:space:]]*([[:digit:]]+).*" $ This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Cc: Adrian Hunter Cc: Eric Biggers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-44g48exl9br9ba0t64chqb4i@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo