x86: convert to generic helpers for IPI function calls

This converts x86, x86-64, and xen to use the new helpers for
smp_call_function() and friends, and adds support for
smp_call_function_single().

Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

8 files changed, 22 insertions, 11 deletions

diff --git a/include/asm-x86/hw_irq_32.h b/include/asm-x86/hw_irq_32.h
index ea88054e03f3..a87b1320c78f 100644
--- a/include/asm-x86/hw_irq_32.h
+++ b/include/asm-x86/hw_irq_32.h
@@ -32,6 +32,7 @@ extern void (*const interrupt[NR_IRQS])(void);
 void reschedule_interrupt(void);
 void invalidate_interrupt(void);
 void call_function_interrupt(void);
+void call_function_single_interrupt(void);
 #endif
 
 #ifdef CONFIG_X86_LOCAL_APIC
diff --git a/include/asm-x86/hw_irq_64.h b/include/asm-x86/hw_irq_64.h
index 0062ef390f67..fe657812d4df 100644
--- a/include/asm-x86/hw_irq_64.h
+++ b/include/asm-x86/hw_irq_64.h
@@ -68,6 +68,7 @@
 #define ERROR_APIC_VECTOR       0xfe
 #define RESCHEDULE_VECTOR       0xfd
 #define CALL_FUNCTION_VECTOR    0xfc
+#define CALL_FUNCTION_SINGLE_VECTOR     0xfb
 /* fb free - please don't readd KDB here because it's useless
    (hint - think what a NMI bit does to a vector) */
 #define THERMAL_APIC_VECTOR     0xfa
@@ -102,6 +103,7 @@ void spurious_interrupt(void);
 void error_interrupt(void);
 void reschedule_interrupt(void);
 void call_function_interrupt(void);
+void call_function_single_interrupt(void);
 void irq_move_cleanup_interrupt(void);
 void invalidate_interrupt0(void);
 void invalidate_interrupt1(void);
diff --git a/include/asm-x86/mach-default/entry_arch.h b/include/asm-x86/mach-default/entry_arch.h
index bc861469bdba..9283b60a1dd2 100644
--- a/include/asm-x86/mach-default/entry_arch.h
+++ b/include/asm-x86/mach-default/entry_arch.h
@@ -13,6 +13,7 @@
 BUILD_INTERRUPT(reschedule_interrupt,RESCHEDULE_VECTOR)
 BUILD_INTERRUPT(invalidate_interrupt,INVALIDATE_TLB_VECTOR)
 BUILD_INTERRUPT(call_function_interrupt,CALL_FUNCTION_VECTOR)
+BUILD_INTERRUPT(call_function_single_interrupt,CALL_FUNCTION_SINGLE_VECTOR)
 #endif
 
 /*
diff --git a/include/asm-x86/mach-default/irq_vectors.h b/include/asm-x86/mach-default/irq_vectors.h
index 881c63ca61ad..ed7d4955c653 100644
--- a/include/asm-x86/mach-default/irq_vectors.h
+++ b/include/asm-x86/mach-default/irq_vectors.h
@@ -48,6 +48,7 @@
 #define INVALIDATE_TLB_VECTOR   0xfd
 #define RESCHEDULE_VECTOR       0xfc
 #define CALL_FUNCTION_VECTOR    0xfb
+#define CALL_FUNCTION_SINGLE_VECTOR     0xfa
 
 #define THERMAL_APIC_VECTOR     0xf0
 /*
diff --git a/include/asm-x86/mach-voyager/entry_arch.h b/include/asm-x86/mach-voyager/entry_arch.h
index 4a1e1e8c10b6..ae52624b5937 100644
--- a/include/asm-x86/mach-voyager/entry_arch.h
+++ b/include/asm-x86/mach-voyager/entry_arch.h
@@ -23,4 +23,4 @@ BUILD_INTERRUPT(qic_invalidate_interrupt, QIC_INVALIDATE_CPI);
 BUILD_INTERRUPT(qic_reschedule_interrupt, QIC_RESCHEDULE_CPI);
 BUILD_INTERRUPT(qic_enable_irq_interrupt, QIC_ENABLE_IRQ_CPI);
 BUILD_INTERRUPT(qic_call_function_interrupt, QIC_CALL_FUNCTION_CPI);
-
+BUILD_INTERRUPT(qic_call_function_single_interrupt, QIC_CALL_FUNCTION_SINGLE_CPI);
diff --git a/include/asm-x86/mach-voyager/irq_vectors.h b/include/asm-x86/mach-voyager/irq_vectors.h
index 165421f5821c..fda57ad37b5d 100644
--- a/include/asm-x86/mach-voyager/irq_vectors.h
+++ b/include/asm-x86/mach-voyager/irq_vectors.h
@@ -33,6 +33,7 @@
 #define VIC_RESCHEDULE_CPI              4
 #define VIC_ENABLE_IRQ_CPI              5
 #define VIC_CALL_FUNCTION_CPI           6
+#define VIC_CALL_FUNCTION_SINGLE_CPI    7
 
 /* Now the QIC CPIs:  Since we don't need the two initial levels,
  * these are 2 less than the VIC CPIs */
@@ -42,9 +43,10 @@
 #define QIC_RESCHEDULE_CPI              (VIC_RESCHEDULE_CPI - QIC_CPI_OFFSET)
 #define QIC_ENABLE_IRQ_CPI              (VIC_ENABLE_IRQ_CPI - QIC_CPI_OFFSET)
 #define QIC_CALL_FUNCTION_CPI           (VIC_CALL_FUNCTION_CPI - QIC_CPI_OFFSET)
+#define QIC_CALL_FUNCTION_SINGLE_CPI    (VIC_CALL_FUNCTION_SINGLE_CPI - QIC_CPI_OFFSET)
 
 #define VIC_START_FAKE_CPI              VIC_TIMER_CPI
-#define VIC_END_FAKE_CPI                VIC_CALL_FUNCTION_CPI
+#define VIC_END_FAKE_CPI                VIC_CALL_FUNCTION_SINGLE_CPI
 
 /* this is the SYS_INT CPI. */
 #define VIC_SYS_INT                     8
diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h
index 1ebaa5cd3112..e3c24807b59b 100644
--- a/include/asm-x86/smp.h
+++ b/include/asm-x86/smp.h
@@ -59,9 +59,9 @@ struct smp_ops {
 
         void (*smp_send_stop)(void);
         void (*smp_send_reschedule)(int cpu);
-        int (*smp_call_function_mask)(cpumask_t mask,
-                                      void (*func)(void *info), void *info,
-                                      int wait);
+
+        void (*send_call_func_ipi)(cpumask_t mask);
+        void (*send_call_func_single_ipi)(int cpu);
 };
 
 /* Globals due to paravirt */
@@ -103,17 +103,22 @@ static inline void smp_send_reschedule(int cpu)
         smp_ops.smp_send_reschedule(cpu);
 }
 
-static inline int smp_call_function_mask(cpumask_t mask,
-                                         void (*func) (void *info), void *info,
-                                         int wait)
+static inline void arch_send_call_function_single_ipi(int cpu)
+{
+        smp_ops.send_call_func_single_ipi(cpu);
+}
+
+static inline void arch_send_call_function_ipi(cpumask_t mask)
 {
-        return smp_ops.smp_call_function_mask(mask, func, info, wait);
+        smp_ops.send_call_func_ipi(mask);
 }
 
 void native_smp_prepare_boot_cpu(void);
 void native_smp_prepare_cpus(unsigned int max_cpus);
 void native_smp_cpus_done(unsigned int max_cpus);
 int native_cpu_up(unsigned int cpunum);
+void native_send_call_func_ipi(cpumask_t mask);
+void native_send_call_func_single_ipi(int cpu);
 
 extern int __cpu_disable(void);
 extern void __cpu_die(unsigned int cpu);
@@ -202,7 +207,5 @@ extern void cpu_uninit(void);
 #endif
 
 extern void smp_alloc_memory(void);
-extern void lock_ipi_call_lock(void);
-extern void unlock_ipi_call_lock(void);
 #endif /* __ASSEMBLY__ */
 #endif
diff --git a/include/asm-x86/xen/events.h b/include/asm-x86/xen/events.h
index 596312a7bfc9..f8d57ea1f05f 100644
--- a/include/asm-x86/xen/events.h
+++ b/include/asm-x86/xen/events.h
@@ -4,6 +4,7 @@
 enum ipi_vector {
         XEN_RESCHEDULE_VECTOR,
         XEN_CALL_FUNCTION_VECTOR,
+        XEN_CALL_FUNCTION_SINGLE_VECTOR,
 
         XEN_NR_IPIS,
 };