[tip:x86/platform] x86/platform/UV: Move scir info to the per cpu info struct

[tip-bot for Mike Travis <tipbot@zytor.com>]

Commit-ID:  d38bb135d814e96811e1a0778564d7a2df922e28
Gitweb:     http://git.kernel.org/tip/d38bb135d814e96811e1a0778564d7a2df922e28
Author:     Mike Travis <travis@sgi.com>
AuthorDate: Fri, 29 Apr 2016 16:54:13 -0500
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 4 May 2016 08:48:49 +0200

x86/platform/UV: Move scir info to the per cpu info struct

Change the references to the SCIR fields to the new per cpu info structs.

Tested-by: John Estabrook <estabrook@sgi.com>
Tested-by: Gary Kroening <gfk@sgi.com>
Tested-by: Nathan Zimmer <nzimmer@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Dimitri Sivanich <sivanich@sgi.com>
Cc: Andrew Banman <abanman@sgi.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russ Anderson <rja@sgi.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20160429215404.452538234@asylum.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/x86/include/asm/uv/uv_hub.h   | 17 ++++++++++-------
 arch/x86/kernel/apic/x2apic_uv_x.c | 18 +++++++++---------
 2 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/arch/x86/include/asm/uv/uv_hub.h b/arch/x86/include/asm/uv/uv_hub.h
index 2ff0eb8..b8c5a61 100644
--- a/arch/x86/include/asm/uv/uv_hub.h
+++ b/arch/x86/include/asm/uv/uv_hub.h
@@ -127,6 +127,7 @@
  */
 #define UV_MAX_NASID_VALUE	(UV_MAX_NUMALINK_BLADES * 2)
 
+/* System Controller Interface Reg info */
 struct uv_scir_s {
 	struct timer_list timer;
 	unsigned long	offset;
@@ -161,7 +162,6 @@ struct uv_hub_info_s {
 	unsigned char		blade_processor_id;
 	unsigned char		m_val;
 	unsigned char		n_val;
-	struct uv_scir_s	scir;
 };
 
 DECLARE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
@@ -179,6 +179,9 @@ DECLARE_PER_CPU(struct uv_cpu_info_s, __uv_cpu_info);
 #define uv_cpu_info		this_cpu_ptr(&__uv_cpu_info)
 #define uv_cpu_info_per(cpu)	(&per_cpu(__uv_cpu_info, cpu))
 
+#define	uv_scir_info		(&uv_cpu_info->scir)
+#define	uv_cpu_scir_info(cpu)	(&uv_cpu_info_per(cpu)->scir)
+
 /*
  * HUB revision ranges for each UV HUB architecture.
  * This is a software convention - NOT the hardware revision numbers in
@@ -686,9 +689,9 @@ DECLARE_PER_CPU(struct uv_cpu_nmi_s, uv_cpu_nmi);
 /* Update SCIR state */
 static inline void uv_set_scir_bits(unsigned char value)
 {
-	if (uv_hub_info->scir.state != value) {
-		uv_hub_info->scir.state = value;
-		uv_write_local_mmr8(uv_hub_info->scir.offset, value);
+	if (uv_scir_info->state != value) {
+		uv_scir_info->state = value;
+		uv_write_local_mmr8(uv_scir_info->offset, value);
 	}
 }
 
@@ -699,10 +702,10 @@ static inline unsigned long uv_scir_offset(int apicid)
 
 static inline void uv_set_cpu_scir_bits(int cpu, unsigned char value)
 {
-	if (uv_cpu_hub_info(cpu)->scir.state != value) {
+	if (uv_cpu_scir_info(cpu)->state != value) {
 		uv_write_global_mmr8(uv_cpu_to_pnode(cpu),
-				uv_cpu_hub_info(cpu)->scir.offset, value);
-		uv_cpu_hub_info(cpu)->scir.state = value;
+				uv_cpu_scir_info(cpu)->offset, value);
+		uv_cpu_scir_info(cpu)->state = value;
 	}
 }
 
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 067aa51..c8acda9 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -756,8 +756,8 @@ static __init void uv_rtc_init(void)
  */
 static void uv_heartbeat(unsigned long ignored)
 {
-	struct timer_list *timer = &uv_hub_info->scir.timer;
-	unsigned char bits = uv_hub_info->scir.state;
+	struct timer_list *timer = &uv_scir_info->timer;
+	unsigned char bits = uv_scir_info->state;
 
 	/* flip heartbeat bit */
 	bits ^= SCIR_CPU_HEARTBEAT;
@@ -777,14 +777,14 @@ static void uv_heartbeat(unsigned long ignored)
 
 static void uv_heartbeat_enable(int cpu)
 {
-	while (!uv_cpu_hub_info(cpu)->scir.enabled) {
-		struct timer_list *timer = &uv_cpu_hub_info(cpu)->scir.timer;
+	while (!uv_cpu_scir_info(cpu)->enabled) {
+		struct timer_list *timer = &uv_cpu_scir_info(cpu)->timer;
 
 		uv_set_cpu_scir_bits(cpu, SCIR_CPU_HEARTBEAT|SCIR_CPU_ACTIVITY);
 		setup_timer(timer, uv_heartbeat, cpu);
 		timer->expires = jiffies + SCIR_CPU_HB_INTERVAL;
 		add_timer_on(timer, cpu);
-		uv_cpu_hub_info(cpu)->scir.enabled = 1;
+		uv_cpu_scir_info(cpu)->enabled = 1;
 
 		/* also ensure that boot cpu is enabled */
 		cpu = 0;
@@ -794,9 +794,9 @@ static void uv_heartbeat_enable(int cpu)
 #ifdef CONFIG_HOTPLUG_CPU
 static void uv_heartbeat_disable(int cpu)
 {
-	if (uv_cpu_hub_info(cpu)->scir.enabled) {
-		uv_cpu_hub_info(cpu)->scir.enabled = 0;
-		del_timer(&uv_cpu_hub_info(cpu)->scir.timer);
+	if (uv_cpu_scir_info(cpu)->enabled) {
+		uv_cpu_scir_info(cpu)->enabled = 0;
+		del_timer(&uv_cpu_scir_info(cpu)->timer);
 	}
 	uv_set_cpu_scir_bits(cpu, 0xff);
 }
@@ -1055,13 +1055,13 @@ void __init uv_system_init(void)
 
 		uv_cpu_hub_info(cpu)->numa_blade_id = blade;
 		uv_cpu_hub_info(cpu)->pnode = pnode;
-		uv_cpu_hub_info(cpu)->scir.offset = uv_scir_offset(apicid);
 		uv_cpu_hub_info(cpu)->blade_processor_id = lcpu;
 		uv_node_to_blade[nodeid] = blade;
 		uv_cpu_to_blade[cpu] = blade;
 
 		/* Initialize per cpu info list */
 		uv_cpu_info_per(cpu)->p_uv_hub_info = uv_cpu_hub_info(cpu);
+		uv_cpu_info_per(cpu)->scir.offset = uv_scir_offset(apicid);
 	}
 
 	/* Add blade/pnode info for nodes without cpus */