On Tue, 2007-02-06 at 20:26 +0300, Sergei Shtylyov wrote:
> Convert the spinlocks in the PowerPC interrupt related code into the raw ones,
> also convert the PURR and PMC related spinlocks...
Care to explain the difference ? This is related to the -rt stuff ?
Cheers,
Ben.
> Signed-off-by: Mark A. Greer <[email protected]>
> Signed-off-by: Sergei Shtylyov <[email protected]>
>
> Index: linux-2.6/arch/powerpc/kernel/irq.c
> ===================================================================
> --- linux-2.6.orig/arch/powerpc/kernel/irq.c
> +++ linux-2.6/arch/powerpc/kernel/irq.c
> @@ -392,7 +392,7 @@ EXPORT_SYMBOL(do_softirq);
> #ifdef CONFIG_PPC_MERGE
>
> static LIST_HEAD(irq_hosts);
> -static spinlock_t irq_big_lock = SPIN_LOCK_UNLOCKED;
> +static DEFINE_RAW_SPINLOCK(irq_big_lock);
> static DEFINE_PER_CPU(unsigned int, irq_radix_reader);
> static unsigned int irq_radix_writer;
> struct irq_map_entry irq_map[NR_IRQS];
> Index: linux-2.6/arch/powerpc/kernel/pmc.c
> ===================================================================
> --- linux-2.6.orig/arch/powerpc/kernel/pmc.c
> +++ linux-2.6/arch/powerpc/kernel/pmc.c
> @@ -52,7 +52,7 @@ static void dummy_perf(struct pt_regs *r
> }
> #endif
>
> -static DEFINE_SPINLOCK(pmc_owner_lock);
> +static DEFINE_RAW_SPINLOCK(pmc_owner_lock);
> static void *pmc_owner_caller; /* mostly for debugging */
> perf_irq_t perf_irq = dummy_perf;
>
> Index: linux-2.6/arch/powerpc/kernel/time.c
> ===================================================================
> --- linux-2.6.orig/arch/powerpc/kernel/time.c
> +++ linux-2.6/arch/powerpc/kernel/time.c
> @@ -223,7 +223,7 @@ struct cpu_purr_data {
> int initialized; /* thread is running */
> u64 tb; /* last TB value read */
> u64 purr; /* last PURR value read */
> - spinlock_t lock;
> + raw_spinlock_t lock;
> };
>
> static DEFINE_PER_CPU(struct cpu_purr_data, cpu_purr_data);
> Index: linux-2.6/arch/powerpc/sysdev/i8259.c
> ===================================================================
> --- linux-2.6.orig/arch/powerpc/sysdev/i8259.c
> +++ linux-2.6/arch/powerpc/sysdev/i8259.c
> @@ -23,7 +23,7 @@ static unsigned char cached_8259[2] = {
> #define cached_A1 (cached_8259[0])
> #define cached_21 (cached_8259[1])
>
> -static DEFINE_SPINLOCK(i8259_lock);
> +static DEFINE_RAW_SPINLOCK(i8259_lock);
>
> static struct device_node *i8259_node;
> static struct irq_host *i8259_host;
> Index: linux-2.6/arch/powerpc/sysdev/ipic.c
> ===================================================================
> --- linux-2.6.orig/arch/powerpc/sysdev/ipic.c
> +++ linux-2.6/arch/powerpc/sysdev/ipic.c
> @@ -30,7 +30,7 @@
> #include "ipic.h"
>
> static struct ipic * primary_ipic;
> -static DEFINE_SPINLOCK(ipic_lock);
> +static DEFINE_RAW_SPINLOCK(ipic_lock);
>
> static struct ipic_info ipic_info[] = {
> [9] = {
> Index: linux-2.6/arch/powerpc/sysdev/mpic.c
> ===================================================================
> --- linux-2.6.orig/arch/powerpc/sysdev/mpic.c
> +++ linux-2.6/arch/powerpc/sysdev/mpic.c
> @@ -44,7 +44,7 @@
>
> static struct mpic *mpics;
> static struct mpic *mpic_primary;
> -static DEFINE_SPINLOCK(mpic_lock);
> +static DEFINE_RAW_SPINLOCK(mpic_lock);
>
> #ifdef CONFIG_PPC32 /* XXX for now */
> #ifdef CONFIG_IRQ_ALL_CPUS
> Index: linux-2.6/include/asm-powerpc/mpic.h
> ===================================================================
> --- linux-2.6.orig/include/asm-powerpc/mpic.h
> +++ linux-2.6/include/asm-powerpc/mpic.h
> @@ -279,7 +279,7 @@ struct mpic
> #ifdef CONFIG_MPIC_BROKEN_U3
> /* The fixup table */
> struct mpic_irq_fixup *fixups;
> - spinlock_t fixup_lock;
> + raw_spinlock_t fixup_lock;
> #endif
>
> /* Register access method */
>
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