[Galaxy Note 3 Themes and Apps] meawww:
I never seen any guide how to add the cpu usage into notification panel to this is a guide how to do it!

Files need modification

Smali

\SystemUI\smali\com\android\systemui\statusbar\policy

XML's

status_bar_expanded_header.xml

id.xml

strings.xml

public.xml

1: Decompile the SystemUI.apk using apktool.

2: Now download the cpu_smali attachment and put the smalis inside the folder \SystemUI\smali\com\android\systemui\statusbar\policy

3: Open the file \SystemUI\res\values\id.xml and scroll down at the bottom and add these lines

<item type="id" name="cpu">false</item>
<item type="id" name="sys_id">false</item>

4: Open the file \SystemUI\res\values\strings.xml and scroll down at the bottom and add these lines

<string name="cpu_idle">idle</string>
<string name="cpu_text">CPU Usage</string>

5: Open the file \SystemUI\res\layout\status_bar_expanded_header.xml and look for the line

<com.android.systemui.statusbar.policy.ClockStock android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Clock" android:textColor="@color/notification_header_clock_color" android:gravity="bottom" android:id="@id/clock" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="@dimen/notification_panel_header_clock_margin_left" android:singleLine="true" systemui:ampmSmall="true" />
<com.android.systemui.statusbar.policy.DateView android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Date" android:textColor="@color/notification_header_date_color" android:gravity="bottom" android:id="@id/date" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_marginLeft="@dimen/notification_panel_header_date_margin_left" android:layout_marginRight="@dimen/notification_panel_header_date_margin_right" android:layout_marginBottom="@dimen/notification_panel_header_date_margin_bottom" android:layout_toEndOf="@id/clock" />

Now we gonna comment out these codes just incase u want the date and clock back in the future so we need to do is replace with these codes

<!--
<com.android.systemui.statusbar.policy.ClockStock android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Clock" android:textColor="@color/notification_header_clock_color" android:gravity="bottom" android:id="@id/clock" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="@dimen/notification_panel_header_clock_margin_left" android:singleLine="true" systemui:ampmSmall="true" />
<com.android.systemui.statusbar.policy.DateView android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Date" android:textColor="@color/notification_header_date_color" android:gravity="bottom" android:id="@id/date" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_marginLeft="@dimen/notification_panel_header_date_margin_left" android:layout_marginRight="@dimen/notification_panel_header_date_margin_right" android:layout_marginBottom="@dimen/notification_panel_header_date_margin_bottom" android:layout_toEndOf="@id/clock" />
-->

6: Now right under the lince we just comment out we will add these lines

<LinearLayout android:gravity="left" android:orientation="vertical" android:id="@id/cpu" android:background="#ff000000" android:layout_width="fill_parent" android:layout_height="fill_parent">
<TextView android:textSize="15.0dip" android:textColor="#ffffffff" android:id="@id/sys_id" android:paddingLeft="11.0dip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/cpu_text" android:layout_marginLeft="@dimen/status_bar_expanded_notification_margin" />
<com.android.systemui.statusbar.policy.CpuUsageView android:textSize="12.0dip" android:textColor="#ffffffff" android:paddingLeft="23.0px" android:layout_width="wrap_content" android:layout_height="wrap_content" />
</LinearLayout>

7: Now save everything and lets compile the SystemUI.apk and sign it.

8: Take the SystemUI.apk we just compiled and signed and decompile it again using apktool

9: Now we open the file public.xml and look for the line <public type="string" name="cpu_idle" id=" now all we needed is the id inside the id=""

10: Now we open the file \SystemUI\smali\com\android\systemui\statusbar\policy\CpuUsageView$1.smali and search for # virtual methods few lines below you will see const v9, 0x7f0a01ad and all we need to do is change the 0x7f0a01ad to the one we found in public.xml

11: Save everything Compile & Sign and push it inside your system\priv-app.

12: Enjoy :D