x86, platform: Change is_untracked_pat_range() to bool; cleanup init

- Change is_untracked_pat_range() to return bool.
- Clean up the initialization of is_untracked_pat_range() -- by default,
  we simply point it at is_ISA_range() directly.
- Move is_untracked_pat_range to the end of struct x86_platform, since
  it is the newest field.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jack Steiner <steiner@sgi.com>
LKML-Reference: <20091119202341.GA4420@sgi.com>

5 files changed, 5 insertions, 12 deletions

diff --git a/arch/x86/include/asm/pat.h b/arch/x86/include/asm/pat.h
index 4c35dd016b54..e2c1668dde7a 100644
--- a/arch/x86/include/asm/pat.h
+++ b/arch/x86/include/asm/pat.h
@@ -24,6 +24,4 @@ int io_reserve_memtype(resource_size_t start, resource_size_t end,
 
 void io_free_memtype(resource_size_t start, resource_size_t end);
 
-int default_is_untracked_pat_range(u64 start, u64 end);
-
 #endif /* _ASM_X86_PAT_H */
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 8112ed786287..024cf3c1fd82 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -113,16 +113,16 @@ struct x86_cpuinit_ops {
 
 /**
  * struct x86_platform_ops - platform specific runtime functions
- * @is_untracked_pat_range      exclude from PAT logic
  * @calibrate_tsc:              calibrate TSC
  * @get_wallclock:              get time from HW clock like RTC etc.
  * @set_wallclock:              set time back to HW clock
+ * @is_untracked_pat_range      exclude from PAT logic
  */
 struct x86_platform_ops {
-        int (*is_untracked_pat_range)(u64 start, u64 end);
         unsigned long (*calibrate_tsc)(void);
         unsigned long (*get_wallclock)(void);
         int (*set_wallclock)(unsigned long nowtime);
+        bool (*is_untracked_pat_range)(u64 start, u64 end);
 };
 
 extern struct x86_init_ops x86_init;
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 2477c9f88093..597a47b1cec6 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -37,12 +37,12 @@ DEFINE_PER_CPU(int, x2apic_extra_bits);
 static enum uv_system_type uv_system_type;
 static u64 gru_start_paddr, gru_end_paddr;
 
-static int is_GRU_range(u64 start, u64 end)
+static inline bool is_GRU_range(u64 start, u64 end)
 {
         return start >= gru_start_paddr && end < gru_end_paddr;
 }
 
-static int uv_is_untracked_pat_range(u64 start, u64 end)
+static bool uv_is_untracked_pat_range(u64 start, u64 end)
 {
         return is_ISA_range(start, end) || is_GRU_range(start, end);
 }
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index bcc749ef62dc..861b8b54e172 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -70,8 +70,8 @@ struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
 };
 
 struct x86_platform_ops x86_platform = {
-        .is_untracked_pat_range         = default_is_untracked_pat_range,
         .calibrate_tsc                  = native_calibrate_tsc,
         .get_wallclock                  = mach_get_cmos_time,
         .set_wallclock                  = mach_set_rtc_mmss,
+        .is_untracked_pat_range         = is_ISA_range,
 };
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index b5bc08cfcea6..ef712518b5b4 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -349,11 +349,6 @@ static int free_ram_pages_type(u64 start, u64 end)
         return 0;
 }
 
-int default_is_untracked_pat_range(u64 start, u64 end)
-{
-        return is_ISA_range(start, end);
-}
-
 /*
  * req_type typically has one of the:
  * - _PAGE_CACHE_WB