[PATCH] init: Use ktime_us_delta() to make initcall_debug log more precise
Mark-PK Tsai
mark-pk.tsai at mediatek.com
Tue Feb 8 21:33:50 PST 2022
Use ktime_us_delta() to make the initcall_debug log more precise than
right shifting the result of ktime_to_ns() by 10 bits.
Signed-off-by: Mark-PK Tsai <mark-pk.tsai at mediatek.com>
---
init/main.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/init/main.c b/init/main.c
index 65fa2e41a9c0..c8edcc3029b1 100644
--- a/init/main.c
+++ b/init/main.c
@@ -1246,15 +1246,11 @@ trace_initcall_start_cb(void *data, initcall_t fn)
static __init_or_module void
trace_initcall_finish_cb(void *data, initcall_t fn, int ret)
{
- ktime_t *calltime = (ktime_t *)data;
- ktime_t delta, rettime;
- unsigned long long duration;
+ ktime_t rettime, *calltime = (ktime_t *)data;
rettime = ktime_get();
- delta = ktime_sub(rettime, *calltime);
- duration = (unsigned long long) ktime_to_ns(delta) >> 10;
printk(KERN_DEBUG "initcall %pS returned %d after %lld usecs\n",
- fn, ret, duration);
+ fn, ret, (unsigned long long)ktime_us_delta(rettime, *calltime));
}
static ktime_t initcall_calltime;
--
2.18.0
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