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Message-ID: <4B84E12A.5040206@kernel.org>
Date: Wed, 24 Feb 2010 00:19:54 -0800
From: Yinghai Lu <yinghai@...nel.org>
To: "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
Thomas Gleixner <tglx@...utronix.de>
CC: "Pan, Jacob jun" <jacob.jun.pan@...el.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86: kill smpboot_hooks.h
only one user, move it back to smpboot.c
remove smpboot_clear_io_apic, and only keep smpboot_clear_io_apic_irqs.
and check nr_legacy_irqs before clear it.
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
arch/x86/include/asm/smpboot_hooks.h | 61 -----------------------------------
arch/x86/kernel/smpboot.c | 57 ++++++++++++++++++++++++++++++--
2 files changed, 54 insertions(+), 64 deletions(-)
Index: linux-2.6/arch/x86/include/asm/smpboot_hooks.h
===================================================================
--- linux-2.6.orig/arch/x86/include/asm/smpboot_hooks.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
- * which needs to alter them. */
-
-static inline void smpboot_clear_io_apic_irqs(void)
-{
-#ifdef CONFIG_X86_IO_APIC
- io_apic_irqs = 0;
-#endif
-}
-
-static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
-{
- CMOS_WRITE(0xa, 0xf);
- local_flush_tlb();
- pr_debug("1.\n");
- *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_high)) =
- start_eip >> 4;
- pr_debug("2.\n");
- *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_low)) =
- start_eip & 0xf;
- pr_debug("3.\n");
-}
-
-static inline void smpboot_restore_warm_reset_vector(void)
-{
- /*
- * Install writable page 0 entry to set BIOS data area.
- */
- local_flush_tlb();
-
- /*
- * Paranoid: Set warm reset code and vector here back
- * to default values.
- */
- CMOS_WRITE(0, 0xf);
-
- *((volatile long *)phys_to_virt(apic->trampoline_phys_low)) = 0;
-}
-
-static inline void __init smpboot_setup_io_apic(void)
-{
-#ifdef CONFIG_X86_IO_APIC
- /*
- * Here we can be sure that there is an IO-APIC in the system. Let's
- * go and set it up:
- */
- if (!skip_ioapic_setup && nr_ioapics)
- setup_IO_APIC();
- else {
- nr_ioapics = 0;
- localise_nmi_watchdog();
- }
-#endif
-}
-
-static inline void smpboot_clear_io_apic(void)
-{
-#ifdef CONFIG_X86_IO_APIC
- nr_ioapics = 0;
-#endif
-}
Index: linux-2.6/arch/x86/kernel/smpboot.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/smpboot.c
+++ linux-2.6/arch/x86/kernel/smpboot.c
@@ -67,7 +67,6 @@
#include <asm/uv/uv.h>
#include <linux/mc146818rtc.h>
-#include <asm/smpboot_hooks.h>
#include <asm/i8259.h>
#ifdef CONFIG_X86_32
@@ -700,6 +699,35 @@ static void __cpuinit announce_cpu(int c
node, cpu, apicid);
}
+static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
+{
+ CMOS_WRITE(0xa, 0xf);
+ local_flush_tlb();
+ pr_debug("1.\n");
+ *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_high)) =
+ start_eip >> 4;
+ pr_debug("2.\n");
+ *((volatile unsigned short *)phys_to_virt(apic->trampoline_phys_low)) =
+ start_eip & 0xf;
+ pr_debug("3.\n");
+}
+
+static inline void smpboot_restore_warm_reset_vector(void)
+{
+ /*
+ * Install writable page 0 entry to set BIOS data area.
+ */
+ local_flush_tlb();
+
+ /*
+ * Paranoid: Set warm reset code and vector here back
+ * to default values.
+ */
+ CMOS_WRITE(0, 0xf);
+
+ *((volatile long *)phys_to_virt(apic->trampoline_phys_low)) = 0;
+}
+
/*
* NOTE - on most systems this is a PHYSICAL apic ID, but on multiquad
* (ie clustered apic addressing mode), this is a LOGICAL apic ID.
@@ -927,6 +955,13 @@ int __cpuinit native_cpu_up(unsigned int
return 0;
}
+static inline void smpboot_clear_io_apic_irqs(void)
+{
+#ifdef CONFIG_X86_IO_APIC
+ if (legacy_pic->nr_legacy_irqs)
+ io_apic_irqs = 0;
+#endif
+}
/*
* Fall back to non SMP mode after errors.
*
@@ -1026,7 +1061,7 @@ static int __init smp_sanity_check(unsig
pr_err("... forcing use of dummy APIC emulation."
"(tell your hw vendor)\n");
}
- smpboot_clear_io_apic();
+ smpboot_clear_io_apic_irqs();
arch_disable_smp_support();
return -1;
}
@@ -1038,7 +1073,7 @@ static int __init smp_sanity_check(unsig
*/
if (!max_cpus) {
printk(KERN_INFO "SMP mode deactivated.\n");
- smpboot_clear_io_apic();
+ smpboot_clear_io_apic_irqs();
localise_nmi_watchdog();
@@ -1063,6 +1098,22 @@ static void __init smp_cpu_index_default
}
}
+static inline void __init smpboot_setup_io_apic(void)
+{
+#ifdef CONFIG_X86_IO_APIC
+ /*
+ * Here we can be sure that there is an IO-APIC in the system. Let's
+ * go and set it up:
+ */
+ if (!skip_ioapic_setup && nr_ioapics)
+ setup_IO_APIC();
+ else {
+ nr_ioapics = 0;
+ localise_nmi_watchdog();
+ }
+#endif
+}
+
/*
* Prepare for SMP bootup. The MP table or ACPI has been read
* earlier. Just do some sanity checking here and enable APIC mode.
--
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