* Atish Patra <atish.patra@xxxxxxx> wrote:
> CONFIG_DEBUG_TLBFLUSH was added in 'commit 3df3212f9722 ("x86/tlb: add
> tlb_flushall_shift knob into debugfs")' to support tlb_flushall_shift
> knob. The knob was removed in 'commit e9f4e0a9fe27 ("x86/mm: Rip out
> complicated, out-of-date, buggy TLB flushing")'. However, the debug
> option was never removed from Kconfig. It was reused in commit
> '9824cf9753ec ("mm: vmstats: tlb flush counters")' but the commit text
> was never updated accordingly.
Please, when you mention several commits, put them into new lines to make
it readable, i.e.:
3df3212f9722 ("x86/tlb: add tlb_flushall_shift knob into debugfs")
etc.
> Update the Kconfig option description as per its current usage.
>
> Take this opprtunity to make this kconfig option a common option as it
> touches the common vmstat code. Introduce another arch specific config
> HAVE_ARCH_DEBUG_TLBFLUSH that can be selected to enable this config.
"opprtunity"?
> +config HAVE_ARCH_DEBUG_TLBFLUSH
> + bool
> + depends on DEBUG_KERNEL
> +
> +config DEBUG_TLBFLUSH
> + bool "Save tlb flush statstics to vmstat"
> + depends on HAVE_ARCH_DEBUG_TLBFLUSH
> + help
> +
> + Add tlbflush statstics to vmstat. It is really helpful understand tlbflush
> + performance and behavior. It should be enabled only for debugging purpose
> + by individual architectures explicitly by selecting HAVE_ARCH_DEBUG_TLBFLUSH.
"statstics"??
Please put a spell checker into your workflow or read what you are
writing ...
Thanks,
Ingo
