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| author | Ricardo Neri <ricardo.neri-calderon@linux.intel.com> | 2023-08-14 20:57:47 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-09-13 15:03:18 +0200 |
| commit | 108af4b4bd3813610701379a58538e3339b162e4 (patch) | |
| tree | fa6fad833cc40f8dad488ee8465b82b889e5ac07 /arch | |
| parent | 450e749707bc1755f22b505d9cd942d4869dc535 (diff) | |
| download | linux-stable-108af4b4bd3813610701379a58538e3339b162e4.tar.gz linux-stable-108af4b4bd3813610701379a58538e3339b162e4.tar.bz2 linux-stable-108af4b4bd3813610701379a58538e3339b162e4.zip | |
x86/sched: Restore the SD_ASYM_PACKING flag in the DIE domain
Commit 8f2d6c41e5a6 ("x86/sched: Rewrite topology setup") dropped the
SD_ASYM_PACKING flag in the DIE domain added in commit 044f0e27dec6
("x86/sched: Add the SD_ASYM_PACKING flag to the die domain of hybrid
processors"). Restore it on hybrid processors.
The die-level domain does not depend on any build configuration and now
x86_sched_itmt_flags() is always needed. Remove the build dependency on
CONFIG_SCHED_[SMT|CLUSTER|MC].
Fixes: 8f2d6c41e5a6 ("x86/sched: Rewrite topology setup")
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Chen Yu <yu.c.chen@intel.com>
Tested-by: Caleb Callaway <caleb.callaway@intel.com>
Link: https://lkml.kernel.org/r/20230815035747.11529-1-ricardo.neri-calderon@linux.intel.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index d40ed3a7dc23..266d05e22ac3 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -579,7 +579,6 @@ static bool match_llc(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o) } -#if defined(CONFIG_SCHED_SMT) || defined(CONFIG_SCHED_CLUSTER) || defined(CONFIG_SCHED_MC) static inline int x86_sched_itmt_flags(void) { return sysctl_sched_itmt_enabled ? SD_ASYM_PACKING : 0; @@ -603,7 +602,14 @@ static int x86_cluster_flags(void) return cpu_cluster_flags() | x86_sched_itmt_flags(); } #endif -#endif + +static int x86_die_flags(void) +{ + if (cpu_feature_enabled(X86_FEATURE_HYBRID_CPU)) + return x86_sched_itmt_flags(); + + return 0; +} /* * Set if a package/die has multiple NUMA nodes inside. @@ -640,7 +646,7 @@ static void __init build_sched_topology(void) */ if (!x86_has_numa_in_package) { x86_topology[i++] = (struct sched_domain_topology_level){ - cpu_cpu_mask, SD_INIT_NAME(DIE) + cpu_cpu_mask, x86_die_flags, SD_INIT_NAME(DIE) }; } |