diff options
Diffstat (limited to 'kernel/timer.c')
| -rw-r--r-- | kernel/timer.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/kernel/timer.c b/kernel/timer.c index d6459923d24..65cc58ce148 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -40,12 +40,14 @@ #include <linux/irq_work.h> #include <linux/sched.h> #include <linux/slab.h> +#include <trace/timer.h> #include <asm/uaccess.h> #include <asm/unistd.h> #include <asm/div64.h> #include <asm/timex.h> #include <asm/io.h> +#include <asm/irq_regs.h> #define CREATE_TRACE_POINTS #include <trace/events/timer.h> @@ -54,6 +56,10 @@ u64 jiffies_64 __cacheline_aligned_in_smp = INITIAL_JIFFIES; EXPORT_SYMBOL(jiffies_64); +DEFINE_TRACE(timer_set); +DEFINE_TRACE(timer_update_time); +DEFINE_TRACE(timer_timeout); + /* * per-CPU timer vector definitions: */ @@ -366,6 +372,7 @@ static void internal_add_timer(struct tvec_base *base, struct timer_list *timer) i = (expires >> (TVR_BITS + 3 * TVN_BITS)) & TVN_MASK; vec = base->tv5.vec + i; } + trace_timer_set(timer); /* * Timers are FIFO: */ @@ -1303,8 +1310,13 @@ void run_local_timers(void) void do_timer(unsigned long ticks) { + struct timespec curtime, wtom; + jiffies_64 += ticks; update_wall_time(); + curtime = __current_kernel_time(); + wtom = __get_wall_to_monotonic(); + trace_timer_update_time(&curtime, &wtom); calc_global_load(ticks); } @@ -1387,7 +1399,9 @@ SYSCALL_DEFINE0(getegid) static void process_timeout(unsigned long __data) { - wake_up_process((struct task_struct *)__data); + struct task_struct *task = (struct task_struct *)__data; + trace_timer_timeout(task); + wake_up_process(task); } /** |