diff options
Diffstat (limited to 'arch/arm/common')
| -rw-r--r-- | arch/arm/common/bL_switcher.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/common/bL_switcher.c b/arch/arm/common/bL_switcher.c index dc53eb8dcc81..7002de360d23 100644 --- a/arch/arm/common/bL_switcher.c +++ b/arch/arm/common/bL_switcher.c @@ -20,6 +20,7 @@ #include <linux/cpumask.h> #include <linux/kthread.h> #include <linux/wait.h> +#include <linux/time.h> #include <linux/clockchips.h> #include <linux/hrtimer.h> #include <linux/tick.h> @@ -33,10 +34,14 @@ #include <linux/moduleparam.h> #include <asm/smp_plat.h> +#include <asm/cputype.h> #include <asm/suspend.h> #include <asm/mcpm.h> #include <asm/bL_switcher.h> +#define CREATE_TRACE_POINTS +#include <trace/events/power_cpu_migrate.h> + /* * Use our own MPIDR accessors as the generic ones in asm/cputype.h have @@ -52,6 +57,16 @@ static int read_mpidr(void) } /* + * Get a global nanosecond time stamp for tracing. + */ +static s64 get_ns(void) +{ + struct timespec ts; + getnstimeofday(&ts); + return timespec_to_ns(&ts); +} + +/* * bL switcher core code. */ @@ -208,6 +223,7 @@ static int bL_switch_to(unsigned int new_cluster_id) */ local_irq_disable(); local_fiq_disable(); + trace_cpu_migrate_begin(get_ns(), ob_mpidr); /* redirect GIC's SGIs to our counterpart */ gic_migrate_target(bL_gic_id[ib_cpu][ib_cluster]); @@ -250,6 +266,7 @@ static int bL_switch_to(unsigned int new_cluster_id) tdev->evtdev->next_event, 1); } + trace_cpu_migrate_finish(get_ns(), ib_mpidr); local_fiq_enable(); local_irq_enable(); |