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Subject[PATCH 0/5] context_tracking: Flatter archs not using exception_enter/exit() v2
Date
In order to be able to turn on/off nohz_full at runtime, we'll need
the archs to give up saving the context tracking state on the task stack
because this forces context tracking to run system wide, even on CPUs
that don't have nohz_full enabled.

Now being able to do so require sane entry code meeting some
requirements that at least x86 just achieved recently (I haven't checked
other archs yet).

Changes since v2:

- Rebase against v5.10-rc1
- Use SCHED_WARN_ON() instead of WARN_ON_ONCE() for the context tracking
sanity check on schedule().

git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
core/isolation-v2

HEAD: 79f60f3dd0e0aea8b17c825371d8697444ae5faf

Thanks,
Frederic
---

Frederic Weisbecker (5):
context_tracking: Introduce HAVE_CONTEXT_TRACKING_OFFSTACK
context_tracking: Don't implement exception_enter/exit() on CONFIG_HAVE_CONTEXT_TRACKING_OFFSTACK
sched: Detect call to schedule from critical entry code
context_tracking: Only define schedule_user() on !HAVE_CONTEXT_TRACKING_OFFSTACK archs
x86: Support HAVE_CONTEXT_TRACKING_OFFSTACK


arch/Kconfig | 17 +++++++++++++++++
arch/x86/Kconfig | 1 +
include/linux/context_tracking.h | 6 ++++--
kernel/sched/core.c | 3 ++-
4 files changed, 24 insertions(+), 3 deletions(-)

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