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| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-11 11:34:38 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:16:12 +0200 |
| commit | 66f4e88cc69da7d9ec4d68cf370cc69742d4af81 (patch) | |
| tree | 9ba92c918c9aa2804e1413c82de7a4893a271fd3 /arch/x86/include/asm/syscalls.h | |
| parent | mm: add ksys_readahead() helper; remove in-kernel calls to sys_readahead() (diff) | |
| download | linux-66f4e88cc69da7d9ec4d68cf370cc69742d4af81.tar.xz linux-66f4e88cc69da7d9ec4d68cf370cc69742d4af81.zip | |
x86/ioport: add ksys_ioperm() helper; remove in-kernel calls to sys_ioperm()
Using this helper allows us to avoid the in-kernel calls to the
sys_ioperm() syscall. The ksys_ prefix denotes that this function is meant
as a drop-in replacement for the syscall. In particular, it uses the same
calling convention as sys_ioperm().
This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: x86@kernel.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'arch/x86/include/asm/syscalls.h')
| -rw-r--r-- | arch/x86/include/asm/syscalls.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/syscalls.h b/arch/x86/include/asm/syscalls.h index bad25bb80679..1c0bebbd039e 100644 --- a/arch/x86/include/asm/syscalls.h +++ b/arch/x86/include/asm/syscalls.h @@ -17,6 +17,7 @@ /* Common in X86_32 and X86_64 */ /* kernel/ioport.c */ +long ksys_ioperm(unsigned long from, unsigned long num, int turn_on); asmlinkage long sys_ioperm(unsigned long, unsigned long, int); asmlinkage long sys_iopl(unsigned int); |