linux-kernel - Re: [PATCH 4/6] lib/test_bitmap: switch test_bitmap_parselist to ktime

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Message-ID: <20190220142048.GA20929@yury-thinkpad>
Date:   Wed, 20 Feb 2019 17:20:48 +0300
From:   Yury Norov <yury.norov@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Yury Norov <yury.norov@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Matthew Wilcox <willy@...radead.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/6] lib/test_bitmap: switch test_bitmap_parselist to
 ktime_get()

On Wed, Feb 20, 2019 at 03:52:36PM +0200, Andy Shevchenko wrote:
> On Wed, Feb 20, 2019 at 03:51:01PM +0200, Andy Shevchenko wrote:
> > On Wed, Feb 20, 2019 at 11:37:03AM +0300, Yury Norov wrote:
> > > test_bitmap_parselist currently uses get_cycles which is not
> > > implemented on some platforms, so use ktime_get() instead.
> > 
> > This sounds like a fix that should go first in the series.
> 
> Ah, okay, it's already first for test module.
> Perhaps Fixes tag and actually one or more examples of such architectures?

Hi Andy, thanks for your time on it.

Only arm, arm64, openrisc, riscv and sparc64 #define get_cycles.
So IIUC, others take stub from include/asm-generic/timex.h.

sparc32, xtensa, m68k, um, and in some cases x86, mips and nios2
provide zero-stubs explicitly.

Yury

> -- 
> With Best Regards,
> Andy Shevchenko
>