From: Valentin Schneider Date: Mon, 17 Aug 2020 11:30:02 +0000 (+0100) Subject: sched/topology: Mark SD_NUMA as SDF_NEEDS_GROUPS X-Git-Tag: v5.10-rc1~203^2~26 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5f4a1c4ea44728aa80be21dbf3a0469b5ca81d88;p=thirdparty%2Fkernel%2Flinux.git sched/topology: Mark SD_NUMA as SDF_NEEDS_GROUPS There would be no point in preserving a sched_domain with a single group just because it has this flag set. Add it to SD_DEGENERATE_GROUPS_MASK. Signed-off-by: Valentin Schneider Signed-off-by: Ingo Molnar Acked-by: Peter Zijlstra Link: https://lore.kernel.org/r/20200817113003.20802-17-valentin.schneider@arm.com --- diff --git a/include/linux/sched/sd_flags.h b/include/linux/sched/sd_flags.h index 29af5f0328618..34b21e971d77b 100644 --- a/include/linux/sched/sd_flags.h +++ b/include/linux/sched/sd_flags.h @@ -151,5 +151,6 @@ SD_FLAG(SD_OVERLAP, SDF_SHARED_PARENT | SDF_NEEDS_GROUPS) * Cross-node balancing * * SHARED_PARENT: Set for all NUMA levels above NODE. + * NEEDS_GROUPS: No point in preserving domain if it has a single group. */ -SD_FLAG(SD_NUMA, SDF_SHARED_PARENT) +SD_FLAG(SD_NUMA, SDF_SHARED_PARENT | SDF_NEEDS_GROUPS)