Push the sync below the secondary smp init hold loop and comment its purpose. This should speed up boot by reducing global traffic during the single-threaded portion of boot.
Signed-off-by: Sonny Rao <[EMAIL PROTECTED]> Signed-off-by: Milton Miller <[EMAIL PROTECTED]> --- next.git/arch/powerpc/kernel/head_64.S~orig 2008-07-11 17:28:47.000000000 -0500 +++ next.git/arch/powerpc/kernel/head_64.S 2008-07-11 17:31:50.000000000 -0500 @@ -1198,7 +1198,6 @@ _GLOBAL(generic_secondary_smp_init) 3: HMT_LOW lbz r23,PACAPROCSTART(r13) /* Test if this processor should */ /* start. */ - sync #ifndef CONFIG_SMP b 3b /* Never go on non-SMP */ @@ -1206,6 +1205,8 @@ _GLOBAL(generic_secondary_smp_init) cmpwi 0,r23,0 beq 3b /* Loop until told to go */ + sync /* order paca.run and cur_cpu_spec */ + /* See if we need to call a cpu state restore handler */ LOAD_REG_IMMEDIATE(r23, cur_cpu_spec) ld r23,0(r23) _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev