Add a vendor hook after attaching a task to a cgroup to
recognize the group_id for performance tuning
Bug: 181917687
Signed-off-by: Frankie Chang <frankie.chang@mediatek.com>
Change-Id: I603afa3d893dd575a7dcb97f83bd9eacb8315bab
(cherry picked from commit bed1e2a75b0000d99a00177272b93e5c8430308b)
We add a vendor hook for util to freq calculation in schedutil,
so we need to do corresponding change for energy calculation.
android_vh_em_pd_energy
adjust energy calculation
Bug: 178021064
Signed-off-by: Yun Hsiang <yun.hsiang@mediatek.com>
Change-Id: Iae772cf07881602eea3f27aeb75fba753e7c2635
Currently, the frequency is calculated by max freq * 1.25 * util / max cap.
Add a vendor hook to adjust the frequency when the calculation
overestimate.
android_vh_map_util_freq
adjust util to freq calculation
Bug: 177845438
Signed-off-by: Yun Hsiang <yun.hsiang@mediatek.com>
Change-Id: I9aa9079f00af7d3380b19f2fe21b75cddd107d15
Some vendors want to add a field when a 'sruct nf_conn' is added so give a
hook to handle this. Any memory allocated when
trace_android_rvh_nf_conn_alloc() is called needs to be freed when
trace_android_rvh_nf_conn_free() is called.
Note, if trace_android_rvh_nf_conn_alloc() fails, be sure to be able to
handle this in trace_android_rvh_nf_conn_free(), but that should not be
an issue as that needs to be addressed in vendor code that runs for
'struct nf_conn' objects that have been created before the vendor code
is loaded no matter what.
Bug: 171013716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I67a9be129150690f8c1961accf7d5cdf0d5d50cc
Some vendors want to add a field when a 'sruct sock' is added so give a
hook to handle this. Any memory allocated when
trace_android_rvh_sk_alloc() is called needs to be freed when
trace_android_rvh_sk_free() is called.
Note, if trace_android_rvh_sk_alloc() fails, be sure to be able to
handle this in trace_android_rvh_sk_free(), but that should not be an
issue as that needs to be addressed in vendor code that runs for 'struct
sock' objects that have been created before the vendor code is loaded no
matter what.
Bug: 171013716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I9ed93e8bffef3cd8fbde4d62fc14596764a85304
For modifying load balance policy, we add the hook on
find_busiest_group().
It allows us to modify load balance paths.
Bug: 168248326
Signed-off-by: YT Chang <yt.chang@mediatek.com>
Change-Id: I77ec043576139806551b978eb1bdf9f637442dfb
(cherry picked from commit a2ca8408de6183364b4c17f341f06e875bc7a1c1)
(cherry picked from commit 489646b879ede582b6b00803edd3f777aede4d85)
- Add the hook to provide additional information
of sysrq crash.
Bug: 170234110
Signed-off-by: Sangmoon Kim <sangmoon.kim@samsung.com>
Change-Id: Ib8f14eaa639b2ef959e911d611515868ff9f193d
- Add the hook to provide additional information like
a task scheduling log.
Bug: 169374262
Signed-off-by: Sangmoon Kim <sangmoon.kim@samsung.com>
Change-Id: I203dbc6faa77687ea48769f76658d28b29ef46fd
When some processes crashed, we want to save cpu regs(x0-x30、pc、sp)，
and context(task_struct、thread_info) to log for debugging
Bug: 166228327
Signed-off-by: yong qian <qianyong@oppo.com>
Change-Id: I4f49ffed583a0e20f1aaa7e445e85a0cbb603bbe
When sudden reset by watchdog occurs, kernel log is very helpful.
But the log has saved structure type in log_buf.
So we want to collect the log on runtime to string format at other
reserved memory.
Bug: 167766040
Change-Id: Ic9686acc7c284e2ab81395fb9cc076fafe142bf9
Signed-off-by: Changki Kim <changki.kim@samsung.com>
This reverts commit 72f2bc5fc2.
You can use input_handle_event instead of this vendor hook.
Change-Id: I8c6c5705f07181710c99a01239d75ecf43f9c5bf
Signed-off-by: Changki Kim <changki.kim@samsung.com>
When some problems happened in android, we can't use adb command because
android can be abnormal state. And we can't use uart because
uart pin is not connected in the board. So we need key combination
functions for debugging.
This function should only use in development environment.
In the market, this will be disabled.
Bug: 167516783
Signed-off-by: Changki Kim <changki.kim@samsung.com>
Change-Id: I1cbbc93642fb45da161eee983380e48045153a66
[ Added "#ifdef __GENKSYMS__" around the include <<trace/hooks/debug.h>
to prevent CRC errors due to visibility of struct trace_eval_map ]
Signed-off-by: Todd Kjos <tkjos@google.com>
This reverts commit ab2d60d901.
Caused KMI break (not detected by TH until after it was merged)
Signed-off-by: Todd Kjos <tkjos@google.com>
Change-Id: If1b10072bf3758fdbb6e0e4e2cdacbcf010ab44d
When some problems happened in android, we can't use adb command because
android can be abnormal state. And we can't use uart because
uart pin is not connected in the board. So we need key combination
functions for debugging.
This function should only use in development environment.
In the market, this will be disabled.
Bug: 167516783
Change-Id: I82e096526b06570b4cc55bf04dc945940d1dd91a
Signed-off-by: Changki Kim <changki.kim@samsung.com>
When a kernel panic occurred, it is sometimes caused by a other cpu
than the panic cpu. When a panic cpu sends smp stop IPI, it can help to
solve the problem even more if aonther cpu stores registers and
run cache flush.
Bug: 165956922
Change-Id: I21c74fe0d047e49b676c502bc9b8d8830e5431de
Signed-off-by: Changki Kim <changki.kim@samsung.com>
Current CPU capacity is scaled by frequency
but it will sometime overestimate.
Add vendor hook to adjust cpu capacity.
android_vh_arch_set_freq_scale
Adjust cpu freq scale for each opp.
Bug: 165823138
Signed-off-by: Yun Hsiang <yun.hsiang@mediatek.com>
Change-Id: I054740a7f60301d5a3b085bfa540d52853f5eec5
(cherry picked from commit e209b3b88d9772ecd782d71c1ae7c5425dd20289)
The hooks function of scheduler tick will need to
insert multiple instances, so that use vendor hook
instead of restricted vendor hook.
Bug: 165787557
Signed-off-by: JianMin Liu <jian-min.liu@mediatek.com>
Change-Id: I750da26452c657d83d5f8c520bf7008693c43a6b
Add vendor hooks for vendor-specific scheduling.
android_rvh_select_task_rq_rt:
To perform vendor-specific RT task placement.
android_rvh_select_fallback_rq:
To restrict cpu usage.
android_rvh_scheduler_tick:
To collect periodic scheduling information and to schedule tasks.
android_rvh_enqueue_tas/android_rvh_dequeue_task:
For vendor to be aware of the task schedule in/out.
android_rvh_can_migrate_task:
To limit task migration based on vendor requirements.
android_rvh_find_lowest_rq:
To find the lowest rq for RT task with vendor-specific way.
Bug: 155241766
Change-Id: I926458b0a911d564e5932e200125b12406c2deee
Signed-off-by: Park Bumgyu <bumgyu.park@samsung.com>
Signed-off-by: JianMin Liu <jian-min.liu@mediatek.com>
- To use fpsimd in kernel task, vendor_hook call is needed to
save/restore fpsimd at scheduling time.
- ANDROID_VENDOR_DATA added to thread_struct.
- Vendor_hooks is called when thread is switching for save/restore
fpsimd states.
(trace_android_vh_is_fpsimd_save(prev, next))
Bug: 149632552
Bug: 165161482
Signed-off-by: Wooyeon Kim <wooy88.kim@samsung.com>
Change-Id: I853e1b6a9a51e24f770423bbc39fdd84265d78fc
Add the hook for the waiter list of futex to allow
vendor perform wait queue enhancement
Bug: 163431711
Signed-off-by: JianMin Liu <jian-min.liu@mediatek.com>
Change-Id: I68218b89c35b23aa5529099bb0bbbd031bdeafef
Add hooks to collect scheduling information and apply vendor's
tuning when task's scheduling priority is changed
Bug: 163431711
Signed-off-by: JianMin Liu <jian-min.liu@mediatek.com>
Change-Id: Ic85835852690d0060666107d9108560f5023496b
- Add the hook to apply vendor's performance tune for owner
of rwsem.
- Add the hook for the waiter list of rwsem to allow
vendor perform waiting queue enhancement
- ANDROID_VENDOR_DATA added to rw_semaphore
Bug: 161400830
Signed-off-by: JianMin Liu <jian-min.liu@mediatek.com>
Change-Id: I007a5e26f3db2adaeaf4e5ccea414ce7abfa83b8
- To apply vendor's performance tune for blocked binder transaction,
add the hook on the begin/end of transaction.
- ANDROID_VENDOR_DATA added to binder_transaction.
Bug: 161400830
Signed-off-by: JianMin Liu <jian-min.liu@mediatek.com>
Change-Id: If60870623ce2669200238172737dd8455ac34b02
For modifying task placement policy, we add the hook on the top of
select_task_rq_fair(). It allows us to modify wakeup/fork/exec balance
paths.
Bug: 165660734
Signed-off-by: Yun Hsiang <yun.hsiang@mediatek.com>
Change-Id: I80ff870453472e183ab2aae7381bff91e49ae296
(cherry picked from commit a1fc1fba460be48dff2484b438888ede557930d4)
android_vh_ptype_head:
To add a debugging chain to ptype list
android_vh_kfree_skb
To sniff the dropped packet at kernel network
Bug: 163716381
Signed-off-by: Bae Soukjin <soukjin.bae@samsung.com>
Change-Id: Ide80bf0a129da31a1824d4a33026ac42be327361
- Add the hook to get mutex/rwsem information that the tasks
are waiting for.
- Add the hook to print messages for sched_show_task.
- ANDROID_VENDOR_DATA_ARRAY added to task_struct
Bug: 162776704
Signed-off-by: Sangmoon Kim <sangmoon.kim@samsung.com>
Change-Id: Ib436fbd8d0ad509c3b5a73ea8f5170e0761a13fd
Add support for vendor hooks. Adds include/trace/hooks
directory for trace definition headers where hooks
can be defined and vendor_hook.c for instantiating
and exporting them for vendor modules.
There are two variants of vendor hooks, both based
on tracepoints:
Normal: this uses the DECLARE_HOOK macro
to create a tracepoint function with the name trace_<name>
where <name> is the unique identifier for the trace.
Restricted: restricted hooks are needed for cases like
scheduler hooks where the attached function must be
called even if the cpu is offline or requires a
non-atomic context. Restricted vendor hooks cannot
be detached, so modules that attach to a restricted
hook can never unload. Also, only 1 attachment is
allowed (any other attempts to attach will fail with
-EBUSY).
For either case, modules attach to the hook by using
register_trace_<name>(func_ptr, NULL).
New hooks should be defined in headers in the
include/trace/hooks/ directory using the
DECLARE_HOOK() or DECLARE_RESTRICTED_HOOK()
macros.
New files added to include/trace/hooks should
be #include'd from drivers/android/vendor_hooks.c.
The EXPORT_TRACEPOINT_SYMBOL_GPL() should be
also added to drivers/android/vendor_hooks.c.
For example, if a new hook, 'android_vh_foo(int &ret)'
is added in do_exit() in exit.c, these changes are
needed:
1. create a new header file include/trace/hooks/foo.h
which contains:
#include <trace/hooks/vendor_hooks.h>
...
DECLARE_HOOK(android_vh_foo,
TP_PROTO(int *retp),
TP_ARGS(retp);
2. in exit.c, add
#include <trace/hooks/foo.h>
...
int ret = 0;
...
android_vh_foo(&ret);
if (ret)
return ret;
...
3. in drivers/android/vendor_hooks.c, add
#include <trace/hooks/foo.h>
...
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_foo);
The hook can then be attached by adding the registration code
to the module:
#include <trace/hooks/sched.h>
...
static void my_foo(int *retp)
{
*retp = 0;
}
...
rc = register_trace_android_vh_sched_exit(my_foo, NULL);
Bug: 156285741
Bug: 149632552
Signed-off-by: Todd Kjos <tkjos@google.com>
Change-Id: I6a7d1c8919dae91c965e2a0450df50eac2d282db
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
