diff options
| author |   Ralf Baechle <ralf@linux-mips.org> | 2010-09-16 11:40:41 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-10-04 18:33:56 +0100 |
| commit | 25f12b339caea6b3ca750871d8cecbda70fd83c6 (patch) | |
| tree | 39f6536c9571b877669837326d3830f8a0627311 /arch | |
| parent | MIPS: DMA: Fix computation of DMA flags from device's coherent_dma_mask. (diff) | |
| download | linux-dev-25f12b339caea6b3ca750871d8cecbda70fd83c6.tar.xz linux-dev-25f12b339caea6b3ca750871d8cecbda70fd83c6.zip | |
MIPS: Kconfig: Fix and clarify kconfig help text for VSMP and SMTC.
Only VSMP was known as SMVP and generally the help text was too short to
be helpful.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/Kconfig | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index ec410009e8f0..5526faabfc21 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1647,8 +1647,16 @@ config MIPS_MT_SMP select SYS_SUPPORTS_SMP select SMP_UP help - This is a kernel model which is also known a VSMP or lately - has been marketesed into SMVP. + This is a kernel model which is known a VSMP but lately has been + marketesed into SMVP. + Virtual SMP uses the processor's VPEs to implement virtual + processors. In currently available configuration of the 34K processor + this allows for a dual processor. Both processors will share the same + primary caches; each will obtain the half of the TLB for it's own + exclusive use. For a layman this model can be described as similar to + what Intel calls Hyperthreading. + + For further information see http://www.linux-mips.org/wiki/34K#VSMP config MIPS_MT_SMTC bool "SMTC: Use all TCs on all VPEs for SMP" @@ -1665,6 +1673,14 @@ config MIPS_MT_SMTC help This is a kernel model which is known a SMTC or lately has been marketesed into SMVP. + is presenting the available TC's of the core as processors to Linux. + On currently available 34K processors this means a Linux system will + see up to 5 processors. The implementation of the SMTC kernel differs + significantly from VSMP and cannot efficiently coexist in the same + kernel binary so the choice between VSMP and SMTC is a compile time + decision. + + For further information see http://www.linux-mips.org/wiki/34K#SMTC endchoice |