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
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| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 9.6 KB |
| Makefile | -rw-r--r-- | 737 bytes |
| acorn.c | -rw-r--r-- | 12.1 KB |
| acorn.h | -rw-r--r-- | 527 bytes |
| aix.c | -rw-r--r-- | 6.4 KB |
| aix.h | -rw-r--r-- | 98 bytes |
| amiga.c | -rw-r--r-- | 3.7 KB |
| amiga.h | -rw-r--r-- | 128 bytes |
| atari.c | -rw-r--r-- | 4.1 KB |
| atari.h | -rw-r--r-- | 1.1 KB |
| check.c | -rw-r--r-- | 4.2 KB |
| check.h | -rw-r--r-- | 1.2 KB |
| cmdline.c | -rw-r--r-- | 3.6 KB |
| cmdline.h | -rw-r--r-- | 96 bytes |
| efi.c | -rw-r--r-- | 22.3 KB |
| efi.h | -rw-r--r-- | 3.7 KB |
| ibm.c | -rw-r--r-- | 9.4 KB |
| ibm.h | -rw-r--r-- | 86 bytes |
| karma.c | -rw-r--r-- | 1.1 KB |
| karma.h | -rw-r--r-- | 163 bytes |
| ldm.c | -rw-r--r-- | 42.1 KB |
| ldm.h | -rw-r--r-- | 4.7 KB |
| mac.c | -rw-r--r-- | 3.6 KB |
| mac.h | -rw-r--r-- | 1.3 KB |
| msdos.c | -rw-r--r-- | 16.0 KB |
| msdos.h | -rw-r--r-- | 163 bytes |
| osf.c | -rw-r--r-- | 1.9 KB |
| osf.h | -rw-r--r-- | 162 bytes |
| sgi.c | -rw-r--r-- | 2.3 KB |
| sgi.h | -rw-r--r-- | 167 bytes |
| sun.c | -rw-r--r-- | 3.8 KB |
| sun.h | -rw-r--r-- | 208 bytes |
| sysv68.c | -rw-r--r-- | 1.9 KB |
| sysv68.h | -rw-r--r-- | 101 bytes |
| ultrix.c | -rw-r--r-- | 1.2 KB |
| ultrix.h | -rw-r--r-- | 129 bytes |
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