Android 6.0.1 Release 61 (MOB30Z)
-----BEGIN PGP SIGNATURE-----

iEYEABECAAYFAlefxDQACgkQ6K0/gZqxDnip2ACfVQ2tY6lcGUlT0bwGUagtYIEy
ii4AniKmljbAlyO0M5eTydKej87c21Ea
=S5OJ
-----END PGP SIGNATURE-----
add a property for controlling perf_event_paranoid

This adds a system property for controlling unprivileged access to
perf_event_paranoid. It depends on adding kernel support for
perf_event_paranoid=3 based on grsecurity's PERF_HARDEN feature to
completely disable unprivileged access to perf. A minimal port of this
feature is used in the vanilla Debian kernel by default.

It hides the non-hardened value as an implementation detail, since while
it is currently 1, it will probably become 2 in the future.

(Cherry picked from commit 2b22a66382db8a2fdf5ed7a685085a6d7d67cf12)

Bug: 29054680

Change-Id: I6e3ae3cf18d8c76df94f879c34fb6fde519b89a9
1 file changed