Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
1
fork

Configure Feed

Select the types of activity you want to include in your feed.

tools headers: Sync uapi/linux/fcntl.h with the kernel source

To pick up the changes in this cset:

3941e37f62fe2c3c uapi/fcntl: add FD_PIDFS_ROOT
cd5d2006327b6d84 uapi/fcntl: add FD_INVALID
67fcec2919e4ed31 fcntl/pidfd: redefine PIDFD_SELF_THREAD_GROUP
a4c746f06853f91d uapi/fcntl: mark range as reserved

This addresses these perf build warnings:

Warning: Kernel ABI header differences:
diff -u tools/perf/trace/beauty/include/uapi/linux/fcntl.h include/uapi/linux/fcntl.h

Please see tools/include/uapi/README for further details.

Cc: Christian Brauner <brauner@kernel.org>
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

+18
+18
tools/perf/trace/beauty/include/uapi/linux/fcntl.h
··· 90 90 #define DN_ATTRIB 0x00000020 /* File changed attibutes */ 91 91 #define DN_MULTISHOT 0x80000000 /* Don't remove notifier */ 92 92 93 + /* Reserved kernel ranges [-100], [-10000, -40000]. */ 93 94 #define AT_FDCWD -100 /* Special value for dirfd used to 94 95 indicate openat should use the 95 96 current working directory. */ 96 97 98 + /* 99 + * The concept of process and threads in userland and the kernel is a confusing 100 + * one - within the kernel every thread is a 'task' with its own individual PID, 101 + * however from userland's point of view threads are grouped by a single PID, 102 + * which is that of the 'thread group leader', typically the first thread 103 + * spawned. 104 + * 105 + * To cut the Gideon knot, for internal kernel usage, we refer to 106 + * PIDFD_SELF_THREAD to refer to the current thread (or task from a kernel 107 + * perspective), and PIDFD_SELF_THREAD_GROUP to refer to the current thread 108 + * group leader... 109 + */ 110 + #define PIDFD_SELF_THREAD -10000 /* Current thread. */ 111 + #define PIDFD_SELF_THREAD_GROUP -10001 /* Current thread group leader. */ 112 + 113 + #define FD_PIDFS_ROOT -10002 /* Root of the pidfs filesystem */ 114 + #define FD_INVALID -10009 /* Invalid file descriptor: -10000 - EBADF = -10009 */ 97 115 98 116 /* Generic flags for the *at(2) family of syscalls. */ 99 117