Wire up the getcpu_cache system call on x86 32/64. This provides an ABI improving the speed of a getcpu operation on x86 by removing the need to perform a function call, "lsl" instruction, or system call on the fast path.
Signed-off-by: Mathieu Desnoyers <[email protected]> CC: Thomas Gleixner <[email protected]> CC: Paul Turner <[email protected]> CC: Andrew Hunter <[email protected]> CC: Peter Zijlstra <[email protected]> CC: Andy Lutomirski <[email protected]> CC: Andi Kleen <[email protected]> CC: Dave Watson <[email protected]> CC: Chris Lameter <[email protected]> CC: Ingo Molnar <[email protected]> CC: "H. Peter Anvin" <[email protected]> CC: Ben Maurer <[email protected]> CC: Steven Rostedt <[email protected]> CC: "Paul E. McKenney" <[email protected]> CC: Josh Triplett <[email protected]> CC: Linus Torvalds <[email protected]> CC: Andrew Morton <[email protected]> CC: [email protected] --- arch/x86/entry/syscalls/syscall_32.tbl | 1 + arch/x86/entry/syscalls/syscall_64.tbl | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index cb713df..c2372a7 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -384,3 +384,4 @@ 375 i386 membarrier sys_membarrier 376 i386 mlock2 sys_mlock2 377 i386 copy_file_range sys_copy_file_range +378 i386 getcpu_cache sys_getcpu_cache diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index dc1040a..6b3ffa0 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -333,6 +333,7 @@ 324 common membarrier sys_membarrier 325 common mlock2 sys_mlock2 326 common copy_file_range sys_copy_file_range +326 common getcpu_cache sys_getcpu_cache # # x32-specific system call numbers start at 512 to avoid cache impact -- 2.1.4
