buildroot/linux
Thomas De Schampheleire c35f157486 package/xenomai: move arch restriction to Cobalt core, no restriction for Mercury
Xenomai has two mutually exclusive cores:
- Cobalt: dual-kernel approach: patched kernel + userland
- Mercury: only userland

In the Cobalt core, not all architectures are supported. This is the source
of the existing ARCH_SUPPORTS variable.

In the Mercury core, there is no imposed architecture restriction.

Rename the XENOMAI_ARCH_SUPPORTS flag to XENOMAI_COBALT_ARCH_SUPPORTS and
move its check from the Xenomai package to the Cobalt core.

Nevertheless, even for Mercury, there are some restrictions:
- pthread_atfork is used, which requires an MMU
- sync functions like __sync_sub_and_fetch and __sync_add_and_fetch are
  expected.

As the corresponding 'linux extension' selects Xenomai, we add the
MMU and sync dependencies there too. They may or may not already be covered
by XENOMAI_COBALT_ARCH_SUPPORTS flag.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-02-09 15:38:35 +01:00
..
0001-timeconst.pl-Eliminate-Perl-warning.patch.conditional linux: add conditional patch for timeconst.pl 2016-02-10 08:12:57 +01:00
Config.ext.in package/xenomai: move arch restriction to Cobalt core, no restriction for Mercury 2019-02-09 15:38:35 +01:00
Config.in linux: bump Linux CIP to version v4.4.171-cip30 2019-02-05 17:33:18 +01:00
linux-ext-aufs.mk linux/linux-ext-*.mk: fit file header into one line 2018-04-01 08:43:07 +02:00
linux-ext-ev3dev-linux-drivers.mk linux/linux-ext-*.mk: fit file header into one line 2018-04-01 08:43:07 +02:00
linux-ext-fbtft.mk linux/linux-ext-*.mk: fit file header into one line 2018-04-01 08:43:07 +02:00
linux-ext-rtai.mk linux/linux*.mk: fix code style 2018-04-01 08:43:42 +02:00
linux-ext-xenomai.mk linux/linux-ext-*.mk: fit file header into one line 2018-04-01 08:43:07 +02:00
linux.hash {linux, linux-headers}: bump 4.{4, 9, 14, 19, 20}.x series 2019-01-27 10:50:29 +01:00
linux.mk linux: bump Linux CIP to version v4.4.171-cip30 2019-02-05 17:33:18 +01:00