[patch 41/55] arm: bL_switcher:k Use ktime_get_real_ns()

From: Thomas Gleixner
Date: Fri Jul 11 2014 - 09:50:08 EST


Use the nanoseconds based interface instead of converting from a
timespec.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
---
arch/arm/common/bL_switcher.c | 16 +++-------------
1 file changed, 3 insertions(+), 13 deletions(-)

Index: tip/arch/arm/common/bL_switcher.c
===================================================================
--- tip.orig/arch/arm/common/bL_switcher.c
+++ tip/arch/arm/common/bL_switcher.c
@@ -58,16 +58,6 @@ 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.
*/

@@ -224,7 +214,7 @@ static int bL_switch_to(unsigned int new
*/
local_irq_disable();
local_fiq_disable();
- trace_cpu_migrate_begin(get_ns(), ob_mpidr);
+ trace_cpu_migrate_begin(ktime_get_real_ns(), ob_mpidr);

/* redirect GIC's SGIs to our counterpart */
gic_migrate_target(bL_gic_id[ib_cpu][ib_cluster]);
@@ -267,7 +257,7 @@ static int bL_switch_to(unsigned int new
tdev->evtdev->next_event, 1);
}

- trace_cpu_migrate_finish(get_ns(), ib_mpidr);
+ trace_cpu_migrate_finish(ktime_get_real_ns(), ib_mpidr);
local_fiq_enable();
local_irq_enable();

@@ -558,7 +548,7 @@ int bL_switcher_get_logical_index(u32 mp

static void bL_switcher_trace_trigger_cpu(void *__always_unused info)
{
- trace_cpu_migrate_current(get_ns(), read_mpidr());
+ trace_cpu_migrate_current(ktime_get_real_ns(), read_mpidr());
}

int bL_switcher_trace_trigger(void)


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