6.6-stable review patch. If anyone has any objections, please let me know.
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From: Peter Zijlstra peterz@infradead.org
[ Upstream commit f577cd57bfaa889cf0718e30e92c08c7f78c9d85 ]
While reworking the x86 topology code Thomas tripped over creating a 'DIE' domain for the package mask. :-)
Since these names are CONFIG_SCHED_DEBUG=y only, rename them to make the name less ambiguous.
[ Shrikanth Hegde: rename on s390 as well. ] [ Valentin Schneider: also rename it in the comments. ] [ mingo: port to recent kernels & find all remaining occurances. ]
Reported-by: Thomas Gleixner tglx@linutronix.de Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Signed-off-by: Ingo Molnar mingo@kernel.org Acked-by: Valentin Schneider vschneid@redhat.com Acked-by: Mel Gorman mgorman@suse.de Acked-by: Heiko Carstens hca@linux.ibm.com Acked-by: Gautham R. Shenoy gautham.shenoy@amd.com Acked-by: Vincent Guittot vincent.guittot@linaro.org Link: https://lore.kernel.org/r/20230712141056.GI3100107@hirez.programming.kicks-a... Stable-dep-of: e1bc02646527 ("x86/topology: Use x86_sched_itmt_flags for PKG domain unconditionally") Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/kernel/smp.c | 4 ++-- arch/s390/kernel/topology.c | 2 +- arch/x86/kernel/smpboot.c | 4 ++-- kernel/sched/fair.c | 2 +- kernel/sched/topology.c | 8 ++++---- 5 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 5826f5108a124..4e4870031265c 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -1051,7 +1051,7 @@ static struct sched_domain_topology_level powerpc_topology[] = { #endif { shared_cache_mask, powerpc_shared_cache_flags, SD_INIT_NAME(CACHE) }, { cpu_mc_mask, SD_INIT_NAME(MC) }, - { cpu_cpu_mask, SD_INIT_NAME(DIE) }, + { cpu_cpu_mask, SD_INIT_NAME(PKG) }, { NULL, }, };
@@ -1595,7 +1595,7 @@ static void add_cpu_to_masks(int cpu) /* Skip all CPUs already part of current CPU core mask */ cpumask_andnot(mask, cpu_online_mask, cpu_core_mask(cpu));
- /* If chip_id is -1; limit the cpu_core_mask to within DIE*/ + /* If chip_id is -1; limit the cpu_core_mask to within PKG */ if (chip_id == -1) cpumask_and(mask, mask, cpu_cpu_mask(cpu));
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index 68adf1de8888b..66bda6a8f918c 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -522,7 +522,7 @@ static struct sched_domain_topology_level s390_topology[] = { { cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) }, { cpu_book_mask, SD_INIT_NAME(BOOK) }, { cpu_drawer_mask, SD_INIT_NAME(DRAWER) }, - { cpu_cpu_mask, SD_INIT_NAME(DIE) }, + { cpu_cpu_mask, SD_INIT_NAME(PKG) }, { NULL, }, };
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index ce77dac9a0202..e4781e7496f6f 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -641,13 +641,13 @@ static void __init build_sched_topology(void) }; #endif /* - * When there is NUMA topology inside the package skip the DIE domain + * When there is NUMA topology inside the package skip the PKG domain * since the NUMA domains will auto-magically create the right spanning * domains based on the SLIT. */ if (!x86_has_numa_in_package) { x86_topology[i++] = (struct sched_domain_topology_level){ - cpu_cpu_mask, x86_die_flags, SD_INIT_NAME(DIE) + cpu_cpu_mask, x86_die_flags, SD_INIT_NAME(PKG) }; }
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index cd9b411706b52..726fa69c4d88b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -9782,7 +9782,7 @@ static bool sched_use_asym_prio(struct sched_domain *sd, int cpu) * can only do it if @group is an SMT group and has exactly on busy CPU. Larger * imbalances in the number of CPUS are dealt with in find_busiest_group(). * - * If we are balancing load within an SMT core, or at DIE domain level, always + * If we are balancing load within an SMT core, or at PKG domain level, always * proceed. * * Return: true if @env::dst_cpu can do with asym_packing load balance. False diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index 3a13cecf17740..2ed884bb36213 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1117,7 +1117,7 @@ build_overlap_sched_groups(struct sched_domain *sd, int cpu) * * - Simultaneous multithreading (SMT) * - Multi-Core Cache (MC) - * - Package (DIE) + * - Package (PKG) * * Where the last one more or less denotes everything up to a NUMA node. * @@ -1139,13 +1139,13 @@ build_overlap_sched_groups(struct sched_domain *sd, int cpu) * * CPU 0 1 2 3 4 5 6 7 * - * DIE [ ] + * PKG [ ] * MC [ ] [ ] * SMT [ ] [ ] [ ] [ ] * * - or - * - * DIE 0-7 0-7 0-7 0-7 0-7 0-7 0-7 0-7 + * PKG 0-7 0-7 0-7 0-7 0-7 0-7 0-7 0-7 * MC 0-3 0-3 0-3 0-3 4-7 4-7 4-7 4-7 * SMT 0-1 0-1 2-3 2-3 4-5 4-5 6-7 6-7 * @@ -1679,7 +1679,7 @@ static struct sched_domain_topology_level default_topology[] = { #ifdef CONFIG_SCHED_MC { cpu_coregroup_mask, cpu_core_flags, SD_INIT_NAME(MC) }, #endif - { cpu_cpu_mask, SD_INIT_NAME(DIE) }, + { cpu_cpu_mask, SD_INIT_NAME(PKG) }, { NULL, }, };