This patch adds markers to various events in the kernel. (interrupts, task activation and hrtimers) Signed-off-by: Steven Rostedt --- arch/x86/kernel/apic_32.c | 2 ++ arch/x86/kernel/irq_32.c | 1 + arch/x86/kernel/irq_64.c | 2 ++ arch/x86/kernel/traps_32.c | 2 ++ arch/x86/kernel/traps_64.c | 2 ++ arch/x86/mm/fault_32.c | 3 +++ arch/x86/mm/fault_64.c | 3 +++ kernel/hrtimer.c | 7 +++++++ kernel/sched.c | 11 +++++++++++ 9 files changed, 33 insertions(+) Index: linux-mcount.git/arch/x86/kernel/apic_32.c =================================================================== --- linux-mcount.git.orig/arch/x86/kernel/apic_32.c 2008-01-30 15:10:16.000000000 -0500 +++ linux-mcount.git/arch/x86/kernel/apic_32.c 2008-01-30 15:54:06.000000000 -0500 @@ -581,6 +581,8 @@ notrace fastcall void smp_apic_timer_int { struct pt_regs *old_regs = set_irq_regs(regs); + trace_mark(arch_apic_timer, "ip %lx", regs->eip); + /* * NOTE! We'd better ACK the irq immediately, * because timer handling can be slow. Index: linux-mcount.git/arch/x86/kernel/irq_32.c =================================================================== --- linux-mcount.git.orig/arch/x86/kernel/irq_32.c 2008-01-30 14:35:48.000000000 -0500 +++ linux-mcount.git/arch/x86/kernel/irq_32.c 2008-01-30 15:54:06.000000000 -0500 @@ -85,6 +85,7 @@ fastcall unsigned int do_IRQ(struct pt_r old_regs = set_irq_regs(regs); irq_enter(); + trace_mark(arch_do_irq, "ip %lx irq %d", regs->eip, irq); #ifdef CONFIG_DEBUG_STACKOVERFLOW /* Debugging check for stack overflow: is there less than 1KB free? */ { Index: linux-mcount.git/arch/x86/kernel/irq_64.c =================================================================== --- linux-mcount.git.orig/arch/x86/kernel/irq_64.c 2008-01-30 14:35:48.000000000 -0500 +++ linux-mcount.git/arch/x86/kernel/irq_64.c 2008-01-30 15:54:06.000000000 -0500 @@ -149,6 +149,8 @@ asmlinkage unsigned int do_IRQ(struct pt irq_enter(); irq = __get_cpu_var(vector_irq)[vector]; + trace_mark(arch_do_irq, "ip %lx irq %d", regs->rip, irq); + #ifdef CONFIG_DEBUG_STACKOVERFLOW stack_overflow_check(regs); #endif Index: linux-mcount.git/arch/x86/kernel/traps_32.c =================================================================== --- linux-mcount.git.orig/arch/x86/kernel/traps_32.c 2008-01-30 14:35:48.000000000 -0500 +++ linux-mcount.git/arch/x86/kernel/traps_32.c 2008-01-30 15:54:06.000000000 -0500 @@ -769,6 +769,8 @@ fastcall __kprobes void do_nmi(struct pt nmi_enter(); + trace_mark(arch_do_nmi, "ip %lx flags %lx", regs->eip, regs->eflags); + cpu = smp_processor_id(); ++nmi_count(cpu); Index: linux-mcount.git/arch/x86/kernel/traps_64.c =================================================================== --- linux-mcount.git.orig/arch/x86/kernel/traps_64.c 2008-01-30 14:35:48.000000000 -0500 +++ linux-mcount.git/arch/x86/kernel/traps_64.c 2008-01-30 15:54:06.000000000 -0500 @@ -782,6 +782,8 @@ asmlinkage __kprobes void default_do_nmi cpu = smp_processor_id(); + trace_mark(arch_do_nmi, "ip %lx flags %lx", regs->rip, regs->eflags); + /* Only the BSP gets external NMIs from the system. */ if (!cpu) reason = get_nmi_reason(); Index: linux-mcount.git/arch/x86/mm/fault_32.c =================================================================== --- linux-mcount.git.orig/arch/x86/mm/fault_32.c 2008-01-30 14:35:48.000000000 -0500 +++ linux-mcount.git/arch/x86/mm/fault_32.c 2008-01-30 15:54:06.000000000 -0500 @@ -311,6 +311,9 @@ fastcall void __kprobes do_page_fault(st /* get the address */ address = read_cr2(); + trace_mark(arch_do_page_fault, "ip %lx err %lx addr %lx", + regs->eip, error_code, address); + tsk = current; si_code = SEGV_MAPERR; Index: linux-mcount.git/arch/x86/mm/fault_64.c =================================================================== --- linux-mcount.git.orig/arch/x86/mm/fault_64.c 2008-01-30 14:35:48.000000000 -0500 +++ linux-mcount.git/arch/x86/mm/fault_64.c 2008-01-30 15:54:06.000000000 -0500 @@ -316,6 +316,9 @@ asmlinkage void __kprobes do_page_fault( /* get the address */ address = read_cr2(); + trace_mark(arch_do_page_fault, "ip %lx err %lx addr %lx", + regs->rip, error_code, address); + info.si_code = SEGV_MAPERR; Index: linux-mcount.git/kernel/hrtimer.c =================================================================== --- linux-mcount.git.orig/kernel/hrtimer.c 2008-01-30 14:35:48.000000000 -0500 +++ linux-mcount.git/kernel/hrtimer.c 2008-01-30 15:54:06.000000000 -0500 @@ -709,6 +709,8 @@ static void enqueue_hrtimer(struct hrtim struct hrtimer *entry; int leftmost = 1; + trace_mark(kernel_hrtimer_enqueue, + "expires %p timer %p", &timer->expires, timer); /* * Find the right place in the rbtree: */ @@ -1130,6 +1132,7 @@ void hrtimer_interrupt(struct clock_even retry: now = ktime_get(); + trace_mark(kernel_hrtimer_interrupt, "now %p", &now); expires_next.tv64 = KTIME_MAX; @@ -1168,6 +1171,10 @@ void hrtimer_interrupt(struct clock_even continue; } + trace_mark(kernel_hrtimer_interrupt_expire, + "expires %p timer %p", + &timer->expires, timer); + __run_hrtimer(timer); } spin_unlock(&cpu_base->lock); Index: linux-mcount.git/kernel/sched.c =================================================================== --- linux-mcount.git.orig/kernel/sched.c 2008-01-30 15:46:44.000000000 -0500 +++ linux-mcount.git/kernel/sched.c 2008-01-30 15:54:06.000000000 -0500 @@ -90,6 +90,11 @@ unsigned long long __attribute__((weak)) #define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20) #define TASK_NICE(p) PRIO_TO_NICE((p)->static_prio) +#define __PRIO(prio) \ + ((prio) <= 99 ? 199 - (prio) : (prio) - 120) + +#define PRIO(p) __PRIO((p)->prio) + /* * 'User priority' is the nice value converted to something we * can work with better when scaling various scheduler parameters, @@ -1372,6 +1377,9 @@ static void activate_task(struct rq *rq, if (p->state == TASK_UNINTERRUPTIBLE) rq->nr_uninterruptible--; + trace_mark(kernel_sched_activate_task, + "pid %d prio %d nr_running %ld", + p->pid, PRIO(p), rq->nr_running); enqueue_task(rq, p, wakeup); inc_nr_running(p, rq); } @@ -1385,6 +1393,9 @@ static void deactivate_task(struct rq *r rq->nr_uninterruptible++; dequeue_task(rq, p, sleep); + trace_mark(kernel_sched_deactivate_task, + "pid %d prio %d nr_running %ld", + p->pid, PRIO(p), rq->nr_running); dec_nr_running(p, rq); } -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/