From d1e084746b0e5806e6345ab31c5b370f8dee2b23 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Wed, 17 Oct 2007 18:04:39 +0200 Subject: [PATCH] i386: constify wd_ops .. as they're, with a single exception, never written to. [ tglx: arch/x86 adaptation ] Signed-off-by: Jan Beulich Signed-off-by: Andi Kleen Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- arch/x86/kernel/cpu/perfctr-watchdog.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/arch/x86/kernel/cpu/perfctr-watchdog.c b/arch/x86/kernel/cpu/perfctr-watchdog.c index 93fecd4b03..54cdbf1a40 100644 --- a/arch/x86/kernel/cpu/perfctr-watchdog.c +++ b/arch/x86/kernel/cpu/perfctr-watchdog.c @@ -34,7 +34,7 @@ struct wd_ops { u64 checkbit; }; -static struct wd_ops *wd_ops; +static const struct wd_ops *wd_ops; /* this number is calculated from Intel's MSR_P4_CRU_ESCR5 register and it's * offset from MSR_P4_BSU_ESCR0. It will be the max for all platforms (for now) @@ -317,7 +317,7 @@ static void single_msr_rearm(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz) write_watchdog_counter(wd->perfctr_msr, NULL, nmi_hz); } -static struct wd_ops k7_wd_ops = { +static const struct wd_ops k7_wd_ops = { .reserve = single_msr_reserve, .unreserve = single_msr_unreserve, .setup = setup_k7_watchdog, @@ -380,7 +380,7 @@ static void p6_rearm(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz) write_watchdog_counter32(wd->perfctr_msr, NULL,nmi_hz); } -static struct wd_ops p6_wd_ops = { +static const struct wd_ops p6_wd_ops = { .reserve = single_msr_reserve, .unreserve = single_msr_unreserve, .setup = setup_p6_watchdog, @@ -532,7 +532,7 @@ static void p4_rearm(struct nmi_watchdog_ctlblk *wd, unsigned nmi_hz) write_watchdog_counter(wd->perfctr_msr, NULL, nmi_hz); } -static struct wd_ops p4_wd_ops = { +static const struct wd_ops p4_wd_ops = { .reserve = p4_reserve, .unreserve = p4_unreserve, .setup = setup_p4_watchdog, @@ -550,6 +550,8 @@ static struct wd_ops p4_wd_ops = { #define ARCH_PERFMON_NMI_EVENT_SEL ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL #define ARCH_PERFMON_NMI_EVENT_UMASK ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK +static struct wd_ops intel_arch_wd_ops; + static int setup_intel_arch_watchdog(unsigned nmi_hz) { unsigned int ebx; @@ -591,11 +593,11 @@ static int setup_intel_arch_watchdog(unsigned nmi_hz) wd->perfctr_msr = perfctr_msr; wd->evntsel_msr = evntsel_msr; wd->cccr_msr = 0; //unused - wd_ops->checkbit = 1ULL << (eax.split.bit_width - 1); + intel_arch_wd_ops.checkbit = 1ULL << (eax.split.bit_width - 1); return 1; } -static struct wd_ops intel_arch_wd_ops = { +static struct wd_ops intel_arch_wd_ops __read_mostly = { .reserve = single_msr_reserve, .unreserve = single_msr_unreserve, .setup = setup_intel_arch_watchdog, -- 2.39.5