diff options
Diffstat (limited to 'arch/mips/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 5f29018a6533..656f0ca52782 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -542,6 +542,8 @@ config QEMU select SYS_SUPPORTS_LITTLE_ENDIAN select ARCH_SPARSEMEM_ENABLE select GENERIC_HARDIRQS_NO__DO_IRQ + select NR_CPUS_DEFAULT_1 + select SYS_SUPPORTS_SMP help Qemu is a software emulator which among other architectures also can simulate a MIPS32 4Kc system. This patch adds support for the @@ -1805,6 +1807,9 @@ config SMP config SYS_SUPPORTS_SMP bool +config NR_CPUS_DEFAULT_1 + bool + config NR_CPUS_DEFAULT_2 bool @@ -1825,8 +1830,9 @@ config NR_CPUS_DEFAULT_64 config NR_CPUS int "Maximum number of CPUs (2-64)" - range 2 64 + range 1 64 if NR_CPUS_DEFAULT_1 depends on SMP + default "1" if NR_CPUS_DEFAULT_1 default "2" if NR_CPUS_DEFAULT_2 default "4" if NR_CPUS_DEFAULT_4 default "8" if NR_CPUS_DEFAULT_8 @@ -1837,10 +1843,13 @@ config NR_CPUS This allows you to specify the maximum number of CPUs which this kernel will support. The maximum supported value is 32 for 32-bit kernel and 64 for 64-bit kernels; the minimum value which makes - sense is 2. + sense is 1 for Qemu (useful only for kernel debugging purposes) + and 2 for all others. This is purely to save memory - each supported CPU adds - approximately eight kilobytes to the kernel image. + approximately eight kilobytes to the kernel image. For best + performance should round up your number of processors to the next + power of two. # # Timer Interrupt Frequency Configuration |