Call out PROCMAP_QUERY ioctl() existence in the section describing /proc/PID/maps file in documentation. We refer user to UAPI header for low-level details of this programmatic interface. Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx> --- Documentation/filesystems/proc.rst | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst index 7c3a565ffbef..f2bbd1e86204 100644 --- a/Documentation/filesystems/proc.rst +++ b/Documentation/filesystems/proc.rst @@ -443,6 +443,14 @@ is not associated with a file: or if empty, the mapping is anonymous. +Starting with 6.11 kernel, /proc/PID/maps provides an alternative +ioctl()-based API that gives ability to flexibly and efficiently query and +filter individual VMAs. This interface is binary and is meant for more +efficient programmatic use. `struct procmap_query`, defined in linux/fs.h UAPI +header, serves as an input/output argument to the `PROCMAP_QUERY` ioctl() +command. See comments in linus/fs.h UAPI header for details on query +semantics, supported flags, data returned, and general API usage information. + The /proc/PID/smaps is an extension based on maps, showing the memory consumption for each of the process's mappings. For each mapping (aka Virtual Memory Area, or VMA) there is a series of lines such as the following:: -- 2.43.0
