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In commit:acb04058de("sched/clock: Fix hotplug crash") the PARISC code gained a call to this function. However the prototype for it is within a CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y #ifdef/#endif. That, combined with this: arch/parisc/Kconfig: select HAVE_UNSTABLE_SCHED_CLOCK if SMP means that PARISC can have it either enabled or disabled, resulting in the following build fail: arch/parisc/kernel/setup.c:180:2: error: implicit declaration of function 'clear_sched_clock_stable' [-Werror=implicit-function-declaration] Add a no-op stub for the non-SMP case to prevent this. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.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: Thomas Gleixner <tglx@linutronix.de> Fixes:acb04058de("sched/clock: Fix hotplug crash") Link: http://lkml.kernel.org/r/20170127173816.22733-1-paul.gortmaker@windriver.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.