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

tools arch x86 uapi: Synch asm/unistd.h with the kernel sources

To pick up the change in:

700d3a5a664d ("x86/syscalls: Revert "x86/syscalls: Make __X32_SYSCALL_BIT be unsigned long"")

That doesn't trigger any changes in tooling and silences this perf build
warning:

Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/unistd.h' differs from latest version at 'arch/x86/include/uapi/asm/unistd.h'
diff -u tools/arch/x86/include/uapi/asm/unistd.h arch/x86/include/uapi/asm/unistd.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

+8 -1
+8 -1
tools/arch/x86/include/uapi/asm/unistd.h
··· 2 2 #ifndef _UAPI_ASM_X86_UNISTD_H 3 3 #define _UAPI_ASM_X86_UNISTD_H 4 4 5 - /* x32 syscall flag bit */ 5 + /* 6 + * x32 syscall flag bit. Some user programs expect syscall NR macros 7 + * and __X32_SYSCALL_BIT to have type int, even though syscall numbers 8 + * are, for practical purposes, unsigned long. 9 + * 10 + * Fortunately, expressions like (nr & ~__X32_SYSCALL_BIT) do the right 11 + * thing regardless. 12 + */ 6 13 #define __X32_SYSCALL_BIT 0x40000000 7 14 8 15 #ifndef __KERNEL__