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authorLeon Romanovsky <leon@kernel.org>2025-06-25 03:57:23 -0400
committerLeon Romanovsky <leon@kernel.org>2025-06-25 03:57:23 -0400
commit4aa765af7983d51eafa13d76398045a5e687b73d (patch)
treea3da8fece8eb8caf6143bb160f2ec3ce8019f219 /arch/x86/kernel/smp.c
parentb5eeb8365d196c95dbb0fd0a5b5a69a44832f16f (diff)
parent52931f55159ea5c27ad4fe66fc0cb8ad75ab795b (diff)
Add multiple priorities support to mlx5 RDMA TRANSPORT tables
From Patrisious: This short series from Patrisious extends mlx5 flow steering logic to allow creation rule creation with priorities in RDMA TRANSPORT tables. Thanks Link: https://lore.kernel.org/all/cover.1750148083.git.leon@kernel.org Signed-off-by: Leon Romanovsky <leon@kernel.org> * mlx5-next: (200 commits) net/mlx5: fs, add multiple prios to RDMA TRANSPORT steering domain Linux 6.16-rc2 ...
Diffstat (limited to 'arch/x86/kernel/smp.c')
-rw-r--r--arch/x86/kernel/smp.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index 18266cc3d98c..b014e6d229f9 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -299,3 +299,27 @@ struct smp_ops smp_ops = {
.send_call_func_single_ipi = native_send_call_func_single_ipi,
};
EXPORT_SYMBOL_GPL(smp_ops);
+
+int arch_cpu_rescan_dead_smt_siblings(void)
+{
+ enum cpuhp_smt_control old = cpu_smt_control;
+ int ret;
+
+ /*
+ * If SMT has been disabled and SMT siblings are in HLT, bring them back
+ * online and offline them again so that they end up in MWAIT proper.
+ *
+ * Called with hotplug enabled.
+ */
+ if (old != CPU_SMT_DISABLED && old != CPU_SMT_FORCE_DISABLED)
+ return 0;
+
+ ret = cpuhp_smt_enable();
+ if (ret)
+ return ret;
+
+ ret = cpuhp_smt_disable(old);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(arch_cpu_rescan_dead_smt_siblings);