Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> writes: > From: Boqun Feng <boqun.feng@xxxxxxxxx> > > Wire up the rseq system call on powerpc. > > This provides an ABI improving the speed of a user-space getcpu > operation on powerpc by skipping the getcpu system call on the fast > path, as well as improving the speed of user-space operations on per-cpu > data compared to using load-reservation/store-conditional atomics. > > Signed-off-by: Boqun Feng <boqun.feng@xxxxxxxxx> > Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> > CC: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> > CC: Paul Mackerras <paulus@xxxxxxxxx> > CC: Michael Ellerman <mpe@xxxxxxxxxxxxxx> > CC: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > CC: "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx> > CC: linuxppc-dev@xxxxxxxxxxxxxxxx > --- > arch/powerpc/include/asm/systbl.h | 1 + > arch/powerpc/include/asm/unistd.h | 2 +- > arch/powerpc/include/uapi/asm/unistd.h | 1 + > 3 files changed, 3 insertions(+), 1 deletion(-) Looks fine to me. I don't have any other new syscalls in my next, so this should not conflict with anything for 4.18. Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> (powerpc) cheers -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
