perfboot.py repeats the record of each event log during Android
boot specified times. By default, interval between measurements
is adjusted in such a way that CPUs are cooled down sufficiently
to avoid boot time slowdown caused by CPU thermal throttling.
This script also works around the issue of dropbox slowing down
boot time on userdebug build (http://b/20890386) by limiting
the number of files to be created by dropbox.
The result is output in a tab-separated value format.
BUG: 22207911
Change-Id: I0ddbac5d1c941efda87bc6db6388d8194d4bb3dd
Contrary to the comment in AndroidConfig.h, mingw does have
__BEGIN_DECLS and __END_DECLS; you just have to #include <sys/cdefs.h>
first. Which is strictly true normally too, but you're going to
get it transitively with bionic or glibc.
Change-Id: I2f2de45f56a7217f91df322d8e896280997ae7a0
adb forward --no-rebind (and the matching reverse command) seem to have
been broken by 424af02f36. I fixed-up the
string parsing and also fixed the error message not to include
strerror(errno) since that does not apply because it is an
application-level error that doesn't have anything to do with the
OS/libc.
Change-Id: Iba7286283bfcf1782076355edcd9c355c0a0edfd
Signed-off-by: Spencer Low <CompareAndSwap@gmail.com>
This CL adds a trigger and a service so that Systrace can be used
for tracing events during boot.
persist.debug.atrace.boottrace property is used for switching on
and off tracing during boot. /data/misc/boottrace/categories
file is used for specifying the categories to be traced.
These property and file are rewritten by Systrace when the newly
added option --boot is specified.
Here is an example of tracing events of am and wm catetories
during boot.
$ external/chromium-trace/systrace am wm --boot
This command will cause the device to reboot. Once the device has
booted up, the trace report is created by hitting Ctrl+C.
As written in readme.txt, this mechanism relies on persistent
property, so tracing events that are emitted before that are not
recorded. This is enough for tracing events after zygote is
launched though.
This only works on userdebug or eng build for security reason.
BUG: 21739901
Change-Id: I03f2963d77a678f47eab5e3e29fc7e91bc9ca3a4
Had messed this up while refactoring before I submitted and neglected
to add a test. Thanks to mazda@ for catching this.
Also disabled the root/unroot tests for user builds.
Change-Id: Icb819a820a2afa227d548d678ae471d5195f0b96
Long ago, we mounted secondary physical cards as readable by all
users on the device, which enabled the use-case of loading media on
a card and viewing it from all users.
More recently, we started giving write access to these secondary
physical cards, but this created a one-directional channel for
communication across user boundaries; something that CDD disallows.
This change is designed to give us the best of both worlds: the
package-specific directories are writable for the user that mounted
the card, but access to those "Android" directories are blocked for
all other users. Other users remain able to read content elsewhere
on the card.
Bug: 22787184
Change-Id: I4a04a1a857a65becf5fd37d775d927af022b40ca
