Messages in this thread Patch in this message | | | From | Paul Burton <> | Subject | [PATCH 14/15] MIPS: smp-cps: Add nothreads kernel parameter | Date | Wed, 3 Feb 2016 03:15:34 +0000 |
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When debugging a new system or core it can be useful to disable the use of multithreading. Introduce a "nothreads" kernel command line parameter that can be set in order to do so.
Signed-off-by: Paul Burton <paul.burton@imgtec.com> ---
arch/mips/kernel/smp-cps.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c index 27f1c04..23c29fc 100644 --- a/arch/mips/kernel/smp-cps.c +++ b/arch/mips/kernel/smp-cps.c @@ -27,14 +27,25 @@ #include <asm/time.h> #include <asm/uasm.h> +static bool threads_disabled; static DECLARE_BITMAP(core_power, NR_CPUS); struct core_boot_config *mips_cps_core_bootcfg; +static int __init setup_nothreads(char *s) +{ + threads_disabled = true; + return 0; +} +early_param("nothreads", setup_nothreads); + static unsigned core_vpe_count(unsigned core) { unsigned cfg; + if (threads_disabled) + return 1; + if ((!config_enabled(CONFIG_MIPS_MT_SMP) || !cpu_has_mipsmt) && (!config_enabled(CONFIG_CPU_MIPSR6) || !cpu_has_vp)) return 1; -- 2.7.0
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