Impact: cleanup
'make headers_check' warn us about leaking of kernel private
(mostly compile time vars) data to userspace in headers. Fix it.
More detailed report for easier reviewing:
1) boot.h - neither BOOT_HEAP_SIZE, BOOT_STACK_SIZE refs
was found by searching thru net (ie in user-space area).
2) prctl.h - sys_arch_prctl is completely removed from
header since frankly I don't even understand why we
describe it here. It is described like
__SYSCALL(__NR_arch_prctl, sys_arch_prctl) in unistd_64.h
and implemented in process_64.c. User-mode linux involved?
So this one in fact is suspicious.
3) ptrace-abi.h - ptrace_bts_config struct is wrapped
by __KERNEL__ -- not sure if it was ever proposed for
userland.
4) setup.h - COMMAND_LINE_SIZE saved for userspace, bootloaders
could use it.
5) sigcontext32.h - we really need linux/types.h here
since we use __u... types.
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxxx>