From: Fernando Luis Vazquez Cao Date: Thu, 15 Dec 2011 02:32:24 +0000 (+0900) Subject: x86: Convert per-cpu counter icr_read_retry_count into a member of irq_stat X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b49d7d877ff96428c8cd2076b33ba72bf85ceaba;p=openwrt%2Fstaging%2Fblogic.git x86: Convert per-cpu counter icr_read_retry_count into a member of irq_stat LAPIC related statistics are grouped inside the per-cpu structure irq_stat, so there is no need for icr_read_retry_count to be a standalone per-cpu variable. This patch moves icr_read_retry_count to where it belongs. Suggested-y: Thomas Gleixner Signed-off-by: Fernando Luis Vazquez Cao Cc: Jörn Engel Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index 5fe0bd574756..a0f541a30944 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -411,8 +411,6 @@ extern int wakeup_secondary_cpu_via_nmi(int apicid, unsigned long start_eip); #ifdef CONFIG_X86_LOCAL_APIC -DECLARE_PER_CPU(unsigned, icr_read_retry_count); - static inline u32 apic_read(u32 reg) { return apic->read(reg); diff --git a/arch/x86/include/asm/hardirq.h b/arch/x86/include/asm/hardirq.h index 55e4de613f0e..da0b3ca815b7 100644 --- a/arch/x86/include/asm/hardirq.h +++ b/arch/x86/include/asm/hardirq.h @@ -11,6 +11,7 @@ typedef struct { #ifdef CONFIG_X86_LOCAL_APIC unsigned int apic_timer_irqs; /* arch dependent */ unsigned int irq_spurious_count; + unsigned int icr_read_retry_count; #endif unsigned int x86_platform_ipis; /* arch dependent */ unsigned int apic_perf_irqs; diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 2942794a9a52..07832363b729 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -79,11 +79,6 @@ DEFINE_EARLY_PER_CPU(u16, x86_bios_cpu_apicid, BAD_APICID); EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_apicid); EXPORT_EARLY_PER_CPU_SYMBOL(x86_bios_cpu_apicid); -/* - * ICR read retry counter - */ -DEFINE_PER_CPU(unsigned, icr_read_retry_count); - #ifdef CONFIG_X86_32 /* @@ -255,7 +250,7 @@ u32 native_safe_apic_wait_icr_idle(void) send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY; if (!send_status) break; - percpu_inc(icr_read_retry_count); + inc_irq_stat(icr_read_retry_count); udelay(100); } while (timeout++ < 1000); diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 4bbf1627905b..ef54ed4e307d 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -76,7 +76,7 @@ int arch_show_interrupts(struct seq_file *p, int prec) seq_printf(p, " IRQ work interrupts\n"); seq_printf(p, "%*s: ", prec, "RTR"); for_each_online_cpu(j) - seq_printf(p, "%10u ", per_cpu(icr_read_retry_count, j)); + seq_printf(p, "%10u ", irq_stats(j)->icr_read_retry_count); seq_printf(p, " APIC ICR read retries\n"); #endif if (x86_platform_ipi_callback) { @@ -140,7 +140,7 @@ u64 arch_irq_stat_cpu(unsigned int cpu) sum += irq_stats(cpu)->irq_spurious_count; sum += irq_stats(cpu)->apic_perf_irqs; sum += irq_stats(cpu)->apic_irq_work_irqs; - sum += per_cpu(icr_read_retry_count, cpu); + sum += irq_stats(cpu)->icr_read_retry_count; #endif if (x86_platform_ipi_callback) sum += irq_stats(cpu)->x86_platform_ipis;