x86/cpu: Move cu_id into topology info

No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Tested-by: Sohil Mehta <sohil.mehta@intel.com> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Zhang Rui <rui.zhang@intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20230814085112.628405546@linutronix.de
maurer · Oct 10, 2023 · e3c0c5d · e3c0c5d
1 parent e952563
commit e3c0c5d
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Showing 4 changed files with 8 additions and 6 deletions.
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
@@ -90,6 +90,9 @@ struct cpuinfo_topology {
 	// Physical die ID on AMD, Relative on Intel
 	u32			die_id;
 
+	// Compute unit ID - AMD specific
+	u32			cu_id;
+
 	// Core ID relative to the package
 	u32			core_id;
 };
@@ -110,7 +113,6 @@ struct cpuinfo_x86 {
 	__u8			x86_phys_bits;
 	/* CPUID returned core id bits: */
 	__u8			x86_coreid_bits;
-	__u8			cu_id;
 	/* Max extended CPUID function supported: */
 	__u32			extended_cpuid_level;
 	/* Maximum supported CPUID level, -1=no CPUID: */

diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
@@ -413,7 +413,7 @@ static void amd_get_topology(struct cpuinfo_x86 *c)
 		c->topo.die_id  = ecx & 0xff;
 
 		if (c->x86 == 0x15)
-			c->cu_id = ebx & 0xff;
+			c->topo.cu_id = ebx & 0xff;
 
 		if (c->x86 >= 0x17) {
 			c->topo.core_id = ebx & 0xff;

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
@@ -1829,7 +1829,7 @@ static void identify_cpu(struct cpuinfo_x86 *c)
 	c->x86_model_id[0] = '\0';  /* Unset */
 	c->x86_max_cores = 1;
 	c->x86_coreid_bits = 0;
-	c->cu_id = 0xff;
+	c->topo.cu_id = 0xff;
 #ifdef CONFIG_X86_64
 	c->x86_clflush_size = 64;
 	c->x86_phys_bits = 36;

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
@@ -482,9 +482,9 @@ static bool match_smt(struct cpuinfo_x86 *c, struct cpuinfo_x86 *o)
 			if (c->topo.core_id == o->topo.core_id)
 				return topology_sane(c, o, "smt");
 
-			if ((c->cu_id != 0xff) &&
-			    (o->cu_id != 0xff) &&
-			    (c->cu_id == o->cu_id))
+			if ((c->topo.cu_id != 0xff) &&
+			    (o->topo.cu_id != 0xff) &&
+			    (c->topo.cu_id == o->topo.cu_id))
 				return topology_sane(c, o, "smt");
 		}