x86: adjust enable_NMI_through_LVT0()

PATCH Applied Jan Beulich 2 participants 2 messages Dec 13, 2007 – Dec 17, 2007 x86

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Jan Beulich

author

2007-12-13 10:10 UTC #0 lore raw

PATCH 1/1 x86: adjust enable_NMI_through_LVT0()

Its previous use in a call to on_each_cpu() was pointless, as at the time that code gets executed only one CPU is online. Further, the function can be __cpuinit, and for this to work without CONFIG_HOTPLUG_CPU setup_nmi() must also get an attribute (this one can even be __init; on 64-bits check_timer() also was lacking that attribute).

Signed-off-by Jan Beulich <[email protected]>

 arch/x86/kernel/apic_32.c    |    2 +-
 arch/x86/kernel/apic_64.c    |    2 +-
 arch/x86/kernel/io_apic_32.c |    4 ++--
 arch/x86/kernel/io_apic_64.c |    6 +++---
 arch/x86/kernel/smpboot_32.c |    2 +-
 arch/x86/kernel/smpboot_64.c |    2 +-
 include/asm-x86/apic_32.h    |    2 +-
 include/asm-x86/io_apic_64.h |    2 +-
 8 files changed, 11 insertions(+), 11 deletions(-)

arch/x86/kernel/apic_32.c +1 -1

@@ -154,7 +154,7 @@ unsigned long safe_apic_wait_icr_idle(vo
 /**
  * enable_NMI_through_LVT0 - enable NMI through local vector table 0
  */
-void enable_NMI_through_LVT0 (void * dummy)
+void __cpuinit enable_NMI_through_LVT0(void)
 {
 	unsigned int v = APIC_DM_NMI;

arch/x86/kernel/apic_64.c +1 -1

@@ -151,7 +151,7 @@ unsigned int safe_apic_wait_icr_idle(voi
 	return send_status;
 }
 
-void enable_NMI_through_LVT0 (void * dummy)
+void __cpuinit enable_NMI_through_LVT0(void)
 {
 	unsigned int v;

arch/x86/kernel/io_apic_32.c +2 -2

@@ -2077,7 +2077,7 @@ static struct irq_chip lapic_chip __read
 	.eoi		= ack_apic,
 };
 
-static void setup_nmi (void)
+static void __init setup_nmi(void)
 {
 	/*
  	 * Dirty trick to enable the NMI watchdog ...

@@ -2090,7 +2090,7 @@ static void setup_nmi (void)
 	 */ 
 	apic_printk(APIC_VERBOSE, KERN_INFO "activating NMI Watchdog ...");
 
-	on_each_cpu(enable_NMI_through_LVT0, NULL, 1, 1);
+	enable_NMI_through_LVT0();
 
 	apic_printk(APIC_VERBOSE, " done.\n");
 }

arch/x86/kernel/io_apic_64.c +3 -3

@@ -1562,7 +1562,7 @@ static struct hw_interrupt_type lapic_ir
 	.end = end_lapic_irq,
 };
 
-static void setup_nmi (void)
+static void __init setup_nmi(void)
 {
 	/*
  	 * Dirty trick to enable the NMI watchdog ...

@@ -1575,7 +1575,7 @@ static void setup_nmi (void)
 	 */ 
 	printk(KERN_INFO "activating NMI Watchdog ...");
 
-	enable_NMI_through_LVT0(NULL);
+	enable_NMI_through_LVT0();
 
 	printk(" done.\n");
 }

@@ -1651,7 +1651,7 @@ static inline void unlock_ExtINT_logic(v
  *
  * FIXME: really need to revamp this for modern platforms only.
  */
-static inline void check_timer(void)
+static inline void __init check_timer(void)
 {
 	struct irq_cfg *cfg = irq_cfg + 0;
 	int apic1, pin1, apic2, pin2;

arch/x86/kernel/smpboot_32.c +1 -1

@@ -405,7 +405,7 @@ static void __cpuinit start_secondary(vo
 	setup_secondary_clock();
 	if (nmi_watchdog == NMI_IO_APIC) {
 		disable_8259A_irq(0);
-		enable_NMI_through_LVT0(NULL);
+		enable_NMI_through_LVT0();
 		enable_8259A_irq(0);
 	}
 	/*

arch/x86/kernel/smpboot_64.c +1 -1

@@ -338,7 +338,7 @@ void __cpuinit start_secondary(void)
 
 	if (nmi_watchdog == NMI_IO_APIC) {
 		disable_8259A_irq(0);
-		enable_NMI_through_LVT0(NULL);
+		enable_NMI_through_LVT0();
 		enable_8259A_irq(0);
 	}

include/asm-x86/apic_32.h +1 -1

@@ -109,7 +109,7 @@ extern void setup_boot_APIC_clock (void)
 extern void setup_secondary_APIC_clock (void);
 extern int APIC_init_uniprocessor (void);
 
-extern void enable_NMI_through_LVT0 (void * dummy);
+extern void enable_NMI_through_LVT0(void);
 
 #define ARCH_APICTIMER_STOPS_ON_C3	1

include/asm-x86/io_apic_64.h +1 -1

@@ -129,7 +129,7 @@ extern int io_apic_set_pci_routing (int 
 
 extern int sis_apic_bug; /* dummy */ 
 
-void enable_NMI_through_LVT0 (void * dummy);
+void enable_NMI_through_LVT0(void);
 
 extern spinlock_t i8259A_lock;

Ingo Molnar

Applied

2007-12-17 13:37 UTC #1 lore raw

Quoted 6 lines · Jan Beulich

Its previous use in a call to on_each_cpu() was pointless, as at the time that code gets executed only one CPU is online. Further, the function can be __cpuinit, and for this to work without CONFIG_HOTPLUG_CPU setup_nmi() must also get an attribute (this one can even be __init; on 64-bits check_timer() also was lacking that attribute).

thanks, applied.

Ingo