[PATCH v3 0/2] context tracker support for arm64

Implement and enable context tracking for arm64 (which is a prerequisite for FULL_NOHZ support). This patchset builds upon earlier work by Kevin Hilman and is based on 3.15-rc2. Changes v2 to v3: * Save/restore necessary registers in ct_user_enter and ct_user_exit * Annotate "error paths" out of

[PATCH v3 0/2] context tracker support for arm64

Implement and enable context tracking for arm64 (which is a prerequisite for FULL_NOHZ support). This patchset builds upon earlier work by Kevin Hilman and is based on 3.15-rc2. Changes v2 to v3: * Save/restore necessary registers in ct_user_enter and ct_user_exit * Annotate error paths out of