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Date: Thu, 27 Mar 2008 14:06:02 -0300
From: Glauber Costa <gcosta@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: akpm@...ux-foundation.org, glommer@...il.com, mingo@...e.hu,
tglx@...utronix.de, Glauber Costa <gcosta@...hat.com>
Subject: [PATCH 7/9] [PATCH] x86: merge SMP definitions of smp.h
we merge everything that is inside CONFIG_SMP
to smp.h. They differ a little bit, so we use
CONFIG_X86_32_SMP and CONFIG_X86_64_SMP as markers.
Signed-off-by: Glauber Costa <gcosta@...hat.com>
---
include/asm-x86/smp.h | 33 ++++++++++++++++++++++++++++++++-
include/asm-x86/smp_32.h | 21 ---------------------
include/asm-x86/smp_64.h | 27 ---------------------------
3 files changed, 32 insertions(+), 49 deletions(-)
diff --git a/include/asm-x86/smp.h b/include/asm-x86/smp.h
index 1cd434d..5f6ea69 100644
--- a/include/asm-x86/smp.h
+++ b/include/asm-x86/smp.h
@@ -131,8 +131,39 @@ extern unsigned long setup_trampoline(void);
void smp_store_cpu_info(int id);
#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
-#else
+
+/* We don't mark CPUs online until __cpu_up(), so we need another measure */
+static inline int num_booting_cpus(void)
+{
+ return cpus_weight(cpu_callout_map);
+}
+#endif /* CONFIG_SMP */
+
+#ifdef CONFIG_X86_32_SMP
+/*
+ * This function is needed by all SMP systems. It must _always_ be valid
+ * from the initial startup. We map APIC_BASE very early in page_setup(),
+ * so this is correct in the x86 case.
+ */
+DECLARE_PER_CPU(int, cpu_number);
+#define raw_smp_processor_id() (x86_read_percpu(cpu_number))
+extern int safe_smp_processor_id(void);
+
+#elif defined(CONFIG_X86_64_SMP)
+#define raw_smp_processor_id() read_pda(cpunumber)
+
+#define stack_smp_processor_id() \
+({ \
+ struct thread_info *ti; \
+ __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
+ ti->cpu; \
+})
+#define safe_smp_processor_id() smp_processor_id()
+
+#else /* !CONFIG_X86_32_SMP && !CONFIG_X86_64_SMP */
#define cpu_physical_id(cpu) boot_cpu_physical_apicid
+#define safe_smp_processor_id() 0
+#define stack_smp_processor_id() 0
#endif
#ifdef CONFIG_X86_32
diff --git a/include/asm-x86/smp_32.h b/include/asm-x86/smp_32.h
index 694d324..d9ae5ac 100644
--- a/include/asm-x86/smp_32.h
+++ b/include/asm-x86/smp_32.h
@@ -8,26 +8,5 @@ extern cpumask_t cpu_callin_map;
extern void (*mtrr_hook)(void);
extern void zap_low_mappings(void);
-#ifdef CONFIG_SMP
-/*
- * This function is needed by all SMP systems. It must _always_ be valid
- * from the initial startup. We map APIC_BASE very early in page_setup(),
- * so this is correct in the x86 case.
- */
-DECLARE_PER_CPU(int, cpu_number);
-#define raw_smp_processor_id() (x86_read_percpu(cpu_number))
-
-extern int safe_smp_processor_id(void);
-
-/* We don't mark CPUs online until __cpu_up(), so we need another measure */
-static inline int num_booting_cpus(void)
-{
- return cpus_weight(cpu_callout_map);
-}
-
-#else /* CONFIG_SMP */
-#define safe_smp_processor_id() 0
-#endif /* !CONFIG_SMP */
-
#endif /* !ASSEMBLY */
#endif
diff --git a/include/asm-x86/smp_64.h b/include/asm-x86/smp_64.h
index 8ea4952..058f413 100644
--- a/include/asm-x86/smp_64.h
+++ b/include/asm-x86/smp_64.h
@@ -7,32 +7,5 @@ extern cpumask_t cpu_callin_map;
extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *),
void *info, int wait);
-#ifdef CONFIG_SMP
-
-#define raw_smp_processor_id() read_pda(cpunumber)
-
-#define stack_smp_processor_id() \
-({ \
- struct thread_info *ti; \
- asm("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
- ti->cpu; \
-})
-
-/*
- * On x86 all CPUs are mapped 1:1 to the APIC space. This simplifies
- * scheduling and IPI sending and compresses data structures.
- */
-static inline int num_booting_cpus(void)
-{
- return cpus_weight(cpu_callout_map);
-}
-
-#define safe_smp_processor_id() smp_processor_id()
-#else /* CONFIG_SMP */
-#define stack_smp_processor_id() 0
-#define safe_smp_processor_id() 0
-#endif /* !CONFIG_SMP */
-
-
#endif
--
1.5.0.6
--
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