x86/apic: Get rid of hard_smp_processor_id()

No point in having a wrapper around read_apic_id().

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Juergen Gross <jgross@suse.com> # Xen PV (dom0 and unpriv. guest)

10 files changed, 17 insertions, 24 deletions

diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index 36f0be7c005c..b59104085b50 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -503,7 +503,11 @@ extern void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *r
 extern int default_cpu_present_to_apicid(int mps_cpu);
 extern int default_check_phys_apicid_present(int phys_apicid);
 
-#endif /* CONFIG_X86_LOCAL_APIC */
+#else /* CONFIG_X86_LOCAL_APIC */
+
+static inline unsigned int read_apic_id(void) { return 0; }
+
+#endif /* !CONFIG_X86_LOCAL_APIC */
 
 #ifdef CONFIG_SMP
 void apic_smt_update(void);
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h
index 1db6faa59ad1..8d96d9a6962d 100644
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -185,13 +185,6 @@ static inline struct cpumask *cpu_llc_shared_mask(int cpu)
 
 extern unsigned disabled_cpus;
 
-#ifdef CONFIG_X86_LOCAL_APIC
-extern int hard_smp_processor_id(void);
-
-#else /* CONFIG_X86_LOCAL_APIC */
-#define hard_smp_processor_id()	0
-#endif /* CONFIG_X86_LOCAL_APIC */
-
 #ifdef CONFIG_DEBUG_NMI_SELFTEST
 extern void nmi_selftest(void);
 #else
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 8af0ec8a393b..ee64f8f4e0e9 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2562,11 +2562,6 @@ int generic_processor_info(int apicid, int version)
 	return cpu;
 }
 
-int hard_smp_processor_id(void)
-{
-	return read_apic_id();
-}
-
 void __irq_msi_compose_msg(struct irq_cfg *cfg, struct msi_msg *msg,
 			   bool dmar)
 {
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 48975d53e845..a8b329aab672 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2095,7 +2095,7 @@ static inline void __init unlock_ExtINT_logic(void)
 	entry0 = ioapic_read_entry(apic, pin);
 	clear_IO_APIC_pin(apic, pin);
 
-	apic_id = hard_smp_processor_id();
+	apic_id = read_apic_id();
 	memset(&entry1, 0, sizeof(entry1));
 
 	entry1.dest_mode_logical	= true;
diff --git a/arch/x86/kernel/apic/ipi.c b/arch/x86/kernel/apic/ipi.c
index 2a6509e8c840..29273e0151fc 100644
--- a/arch/x86/kernel/apic/ipi.c
+++ b/arch/x86/kernel/apic/ipi.c
@@ -320,7 +320,7 @@ int safe_smp_processor_id(void)
 	if (!boot_cpu_has(X86_FEATURE_APIC))
 		return 0;
 
-	apicid = hard_smp_processor_id();
+	apicid = read_apic_id();
 	if (apicid == BAD_APICID)
 		return 0;
 
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
index 04655b7e3107..71feae718a87 100644
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -1208,7 +1208,7 @@ static void __init print_local_APIC(void *dummy)
 	u64 icr;
 
 	pr_debug("printing local APIC contents on CPU#%d/%d:\n",
-		 smp_processor_id(), hard_smp_processor_id());
+		 smp_processor_id(), read_apic_id());
 	v = apic_read(APIC_ID);
 	pr_info("... APIC ID:      %08x (%01x)\n", v, read_apic_id());
 	v = apic_read(APIC_LVR);
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 26ad7ca423e7..5861eeab8c30 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -1042,7 +1042,7 @@ static void init_amd(struct cpuinfo_x86 *c)
 		set_cpu_cap(c, X86_FEATURE_FSRS);
 
 	/* get apicid instead of initial apic id from cpuid */
-	c->apicid = hard_smp_processor_id();
+	c->apicid = read_apic_id();
 
 	/* K6s reports MCEs but don't actually have all the MSRs */
 	if (c->x86 < 6)
diff --git a/arch/x86/kernel/cpu/hygon.c b/arch/x86/kernel/cpu/hygon.c
index 5a2962c492d3..defdc594be14 100644
--- a/arch/x86/kernel/cpu/hygon.c
+++ b/arch/x86/kernel/cpu/hygon.c
@@ -8,6 +8,7 @@
  */
 #include <linux/io.h>
 
+#include <asm/apic.h>
 #include <asm/cpu.h>
 #include <asm/smp.h>
 #include <asm/numa.h>
@@ -300,7 +301,7 @@ static void init_hygon(struct cpuinfo_x86 *c)
 	set_cpu_cap(c, X86_FEATURE_REP_GOOD);
 
 	/* get apicid instead of initial apic id from cpuid */
-	c->apicid = hard_smp_processor_id();
+	c->apicid = read_apic_id();
 
 	/*
 	 * XXX someone from Hygon needs to confirm this DTRT
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index e1aa2cd7734b..8229f41d1ec1 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1220,11 +1220,11 @@ static void __init smp_sanity_check(void)
 	}
 #endif
 
-	if (!physid_isset(hard_smp_processor_id(), phys_cpu_present_map)) {
+	if (!physid_isset(read_apic_id(), phys_cpu_present_map)) {
 		pr_warn("weird, boot CPU (#%d) not listed by the BIOS\n",
-			hard_smp_processor_id());
+			read_apic_id());
 
-		physid_set(hard_smp_processor_id(), phys_cpu_present_map);
+		physid_set(read_apic_id(), phys_cpu_present_map);
 	}
 
 	/*
@@ -1234,7 +1234,7 @@ static void __init smp_sanity_check(void)
 	if (!apic->check_phys_apicid_present(boot_cpu_physical_apicid)) {
 		pr_notice("weird, boot CPU (#%d) not listed by the BIOS\n",
 			  boot_cpu_physical_apicid);
-		physid_set(hard_smp_processor_id(), phys_cpu_present_map);
+		physid_set(read_apic_id(), phys_cpu_present_map);
 	}
 	preempt_enable();
 }
@@ -1439,7 +1439,7 @@ __init void prefill_possible_map(void)
 	if (!num_processors) {
 		if (boot_cpu_has(X86_FEATURE_APIC)) {
 			int apicid = boot_cpu_physical_apicid;
-			int cpu = hard_smp_processor_id();
+			int cpu = read_apic_id();
 
 			pr_warn("Boot CPU (id %d) not listed by BIOS\n", cpu);
 
diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c
index 796cfaa46bfa..65e96b76c423 100644
--- a/arch/x86/kernel/vsmp_64.c
+++ b/arch/x86/kernel/vsmp_64.c
@@ -129,7 +129,7 @@ static void __init vsmp_cap_cpus(void)
 
 static int apicid_phys_pkg_id(int initial_apic_id, int index_msb)
 {
-	return hard_smp_processor_id() >> index_msb;
+	return read_apic_id() >> index_msb;
 }
 
 static void vsmp_apic_post_init(void)