Revision 1e474b28e78897d0d170fab3b28ba683149cb9ea authored by Paul E. McKenney on 05 February 2020, 14:34:09 UTC, committed by Thomas Gleixner on 07 February 2020, 14:34:12 UTC
In CONFIG_SMP=y kernels, smp_call_function_single() returns -ENXIO when invoked for a non-existent CPU. In contrast, in CONFIG_SMP=n kernels, a splat is emitted and smp_call_function_single() otherwise silently ignores its "cpu" argument, instead pretending that the caller intended to have something happen on CPU 0. Given that there is now code that expects smp_call_function_single() to return an error if a bad CPU was specified, this difference in semantics needs to be addressed. Bring the semantics of the CONFIG_SMP=n version of smp_call_function_single() into alignment with its CONFIG_SMP=y counterpart. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20200205143409.GA7021@paulmck-ThinkPad-P72
1 parent 25a3a15
.cocciconfig
[spatch]
options = --timeout 200
options = --use-gitgrep
Computing file changes ...