Enable small core scheduling as soon as we detect that we are in a system that supports thread group. Doing so would avoid a redundant check.
Cc: linuxppc-dev <[email protected]> Cc: LKML <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Valentin Schneider <[email protected]> Cc: Nick Piggin <[email protected]> Cc: Oliver OHalloran <[email protected]> Cc: Nathan Lynch <[email protected]> Cc: Michael Neuling <[email protected]> Cc: Anton Blanchard <[email protected]> Cc: Gautham R Shenoy <[email protected]> Cc: Vaidyanathan Srinivasan <[email protected]> Cc: Jordan Niethe <[email protected]> Signed-off-by: Srikar Dronamraju <[email protected]> --- Changelog v1 -> v2: powerpc/smp: Enable small core scheduling sooner Restored the previous info msg (Jordan) Moved big core topology fixup to fixup_topology (Gautham) arch/powerpc/kernel/smp.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 1ce95da00cb6..72f16dc0cb26 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -1370,6 +1370,16 @@ int setup_profiling_timer(unsigned int multiplier) return 0; } +static void fixup_topology(void) +{ +#ifdef CONFIG_SCHED_SMT + if (has_big_cores) { + pr_info("Big cores detected but using small core scheduling\n"); + powerpc_topology[0].mask = smallcore_smt_mask; + } +#endif +} + void __init smp_cpus_done(unsigned int max_cpus) { /* @@ -1383,12 +1393,7 @@ void __init smp_cpus_done(unsigned int max_cpus) dump_numa_cpu_topology(); -#ifdef CONFIG_SCHED_SMT - if (has_big_cores) { - pr_info("Big cores detected but using small core scheduling\n"); - powerpc_topology[0].mask = smallcore_smt_mask; - } -#endif + fixup_topology(); set_sched_topology(powerpc_topology); } -- 2.17.1
