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ANDROID: thermal: Add logic for filter on-die tz genl event.

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Add logic in enable_thermal_genl_check to avoid
thermal-hal being woken up all the time by on-die sensor.

When the temperature of the on-die sensor thermal_zone updates,
the thermal_zone_device_update() will be called to handle thermal
and then the netlink events will be sent
through thermal_notify_tz_trip_().
But there is currently no way to filter thermal_zone
in the thermal_netlink, so many netlink events will be sent
in a short amount of time. Because the on-die sensors
are very sensitive. Their temperature may jump up and down
quickly in a few ms.

Bug: 170682696
Test: boot and thermal-hal can receive thermal genl events from kernel
Change-Id: Idb3f4b07a2a2740c01d8785910878bfe6edc832d
Signed-off-by: davidchao <davidchao@google.com>
This commit is contained in:
davidchao
2021-03-10 13:56:15 +08:00
committed by David Chao
parent 6c6fac8f39
commit cc574f0d36
2 changed files with 3 additions and 3 deletions
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2
drivers/thermal/thermal_netlink.c
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@@ -232,7 +232,7 @@ static int thermal_genl_send_event(enum thermal_genl_event event,
void *hdr; void *hdr;
int enable_thermal_genl = 1; int enable_thermal_genl = 1;
trace_android_vh_enable_thermal_genl_check(event, &enable_thermal_genl); trace_android_vh_enable_thermal_genl_check(event, p->tz_id, &enable_thermal_genl);
if (!enable_thermal_genl) if (!enable_thermal_genl)
return 0; return 0;

4
include/trace/hooks/thermal.h
View File

@@ -11,8 +11,8 @@
#include <trace/hooks/vendor_hooks.h> #include <trace/hooks/vendor_hooks.h>
DECLARE_HOOK(android_vh_enable_thermal_genl_check, DECLARE_HOOK(android_vh_enable_thermal_genl_check,
TP_PROTO(int event, int *enable_thermal_genl), TP_PROTO(int event, int tz_id, int *enable_thermal_genl),
TP_ARGS(event, enable_thermal_genl)); TP_ARGS(event, tz_id, enable_thermal_genl));
#endif /* _TRACE_HOOK_THERMAL_H */ #endif /* _TRACE_HOOK_THERMAL_H */
/* This part must be outside protection */ /* This part must be outside protection */