ANDROID: sched: fix wrong truncation of walt_avg
The result of "__entry->walt_avg = (__entry->demand << 10)" will exceed
the range of "unsigned int", which will be truncated and make the trace
looks like as follows:
UnityMain-4588 [004] 6029.645672: walt_update_history: 4588(UnityMain): runtime 9928307 samples 1 event 4
demand 9928307 walt 157 pelt 870 (hist: 9928307 9604307 8440077 87392 34144328) cpu 4
UnityMain-4588 [004] 6029.653658: walt_update_history: 4588(UnityMain): runtime 10000000 samples 1 event 4
demand 10000000 walt 165 pelt 886 (hist: 10000000 9955691 6549308 64000 34144328) cpu 4
Fix this by using a u64 type instead of unsgined int type and make the
trace as below:
UnityMain-4617 [004] 117.613558: walt_update_history: 4617(UnityMain): runtime 5770597 samples 1 event 4
demand 7038739 walt 720 pelt 680 (hist: 5770597 7680001 8904509 65596 156) cpu 4
UnityMain-4617 [004] 117.633560: walt_update_history: 4617(UnityMain): runtime 9911238 samples 1 event 4
demand 9911238 walt 1014 pelt 769 (hist: 9911238 5770597 7680001 0 1664188058) cpu 4
Signed-off-by: Ke Wang <ke.wang@spreadtrum.com>
[AmitP: cherry-picked from aosp/android-3.18]
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
1 file changed