diff options
author | Peter Zijlstra <peterz@infradead.org> | 2017-04-21 12:46:57 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-05-15 10:15:21 +0200 |
commit | 2e44b7ddf8ab01cf98106c68388f87af15fbde73 (patch) | |
tree | e0bb9507fc4d61957b10858a2caf87e616c7332a /lib | |
parent | f9fccdb9efef60dbcf84d493514b475c41aa866f (diff) |
sched/clock: Use late_initcall() instead of sched_init_smp()
Core2 marks its TSC unstable in ACPI Processor Idle, which is probed
after sched_init_smp(). Luckily it appears both acpi_processor and
intel_idle (which has a similar check) are mandatory built-in.
This means we can delay switching to stable until after these drivers
have ran (if they were modules, this would be impossible).
Delay the stable switch to late_initcall() to allow these drivers to
mark TSC unstable and avoid difficult stable->unstable transitions.
Reported-by: Lofstedt, Marta <marta.lofstedt@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J . Wysocki <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions