From: Felipe Balbi <felipe.balbi@linux.intel.com>
To: Denys Vlasenko <dvlasenk@redhat.com>, Felipe Balbi <balbi@ti.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drivers/usb/gadget/udc/r8a66597-udc.c: Deinline pipe_change, save 2176 bytes
Date: Mon, 11 Apr 2016 08:21:15 +0300 [thread overview]
Message-ID: <87k2k4pvp0.fsf@intel.com> (raw)
In-Reply-To: <1460145329-14897-1-git-send-email-dvlasenk@redhat.com>
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Hi,
Denys Vlasenko <dvlasenk@redhat.com> writes:
> This function compiles to 298 bytes of machine code, has ~10 callsites.
fair enough
> This is a USB 2.0 device, USB 2.0 is limited to 35 MB/s, so should be
it's not limited to 35MB/sec, sorry. USB 2.0 has a theoretical maximum
of 60MB/sec. But 44MB/sec is what people consider 'possible'. I've
gotten to 41MB/sec with g_mas_storage gadget.
> almost never CPU bound.
>
> No need to optimize for speed this agressively.
>
> Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
> CC: Felipe Balbi <balbi@ti.com>
> CC: linux-usb@vger.kernel.org
> CC: linux-kernel@vger.kernel.org
> ---
> drivers/usb/gadget/udc/r8a66597-udc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c
> index baa0609..1d79a47 100644
> --- a/drivers/usb/gadget/udc/r8a66597-udc.c
> +++ b/drivers/usb/gadget/udc/r8a66597-udc.c
> @@ -296,7 +296,7 @@ static void r8a66597_change_curpipe(struct r8a66597 *r8a66597, u16 pipenum,
> } while ((tmp & mask) != loop);
> }
>
> -static inline void pipe_change(struct r8a66597 *r8a66597, u16 pipenum)
> +static void pipe_change(struct r8a66597 *r8a66597, u16 pipenum)
> {
> struct r8a66597_ep *ep = r8a66597->pipenum2ep[pipenum];
>
> --
> 2.1.0
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-usb" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
balbi
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next prev parent reply other threads:[~2016-04-11 5:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-08 19:55 [PATCH] drivers/usb/gadget/udc/r8a66597-udc.c: Deinline pipe_change, save 2176 bytes Denys Vlasenko
2016-04-11 5:21 ` Felipe Balbi [this message]
2016-04-11 8:26 ` Felipe Balbi
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