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sched/topology: Rename 'DIE' domain to 'PKG'

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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-ass.net
This commit is contained in:
Peter Zijlstra 2023-07-12 16:10:56 +02:00 committed by Ingo Molnar
parent 3657680f38
commit f577cd57bf
5 changed files with 10 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
arch/powerpc/kernel/smp.c
View file

@ -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));

2
arch/s390/kernel/topology.c
View file

@ -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, },
};

4
arch/x86/kernel/smpboot.c
View file

@ -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)
};
}

2
kernel/sched/fair.c
View file

@ -9555,7 +9555,7 @@ 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

8
kernel/sched/topology.c
View file

@ -1119,7 +1119,7 @@ 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.
*
@ -1141,13 +1141,13 @@ 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
*
@ -1681,7 +1681,7 @@ 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, },
};