Russell King 6213f70e7c ARM: smp: remove arch-provided "pen_release" ... Consolidating the "pen_release" stuff amongst the various SoC implementations gives credence to having a CPU holding pen for secondary CPUs. However, this is far from the truth. Many SoC implementations cargo-cult copied various bits of the pen release implementation from the initial Realview/Versatile Express implementation without understanding what it was or why it existed. The reason it existed is because these are _development_ platforms, and some board firmware is unable to individually control the startup of secondary CPUs. Moreover, they do not have a way to power down or reset secondary CPUs for hot-unplug. Hence, the pen_release implementation was designed for ARM Ltd's development platforms to provide a working implementation, even though it is very far from what is required. It was decided a while back to reduce the duplication by consolidating the "pen_release" variable, but this only made the situation worse - we have ended up with several implementations that read this variable but do not write it - again, showing the cargo-cult mentality at work, lack of proper review of new code, and in some cases a lack of testing. While it would be preferable to remove pen_release entirely from the kernel, this is not possible without help from the SoC maintainers, which seems to be lacking. However, I want to remove pen_release from arch code to remove the credence that having it gives. This patch removes pen_release from the arch code entirely, adding private per-SoC definitions for it instead, and explicitly stating that write_pen_release() is cargo-cult copied and should not be copied any further. Rename write_pen_release() in a similar fashion as well. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>		2019-02-01 22:05:23 +00:00
..
common.c	ARM: sirf: mark sirfsoc_init_late as __maybe_unused	2017-07-27 22:57:44 +02:00
common.h	ARM: smp: remove arch-provided "pen_release"	2019-02-01 22:05:23 +00:00
headsmp.S	ARM: smp: remove arch-provided "pen_release"	2019-02-01 22:05:23 +00:00
hotplug.c	ARM: smp: remove arch-provided "pen_release"	2019-02-01 22:05:23 +00:00
Kconfig	ARM: prima2: remove redundant select CPU_V7	2017-06-18 19:13:47 -07:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
platsmp.c	ARM: smp: remove arch-provided "pen_release"	2019-02-01 22:05:23 +00:00
pm.c	ARM: 8641/1: treewide: Replace uses of virt_to_phys with __pa_symbol	2017-02-28 11:06:10 +00:00
pm.h
rstc.c
rtciobrg.c
sleep.S