linux-kernel - RE: [PATCH v5 04/10] scsi: ufshpb: Make eviction depends on region's reads

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Date:   Thu, 11 Mar 2021 08:06:28 +0000
From:   Avri Altman <Avri.Altman@....com>
To:     Can Guo <cang@...eaurora.org>
CC:     "James E . J . Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        Bart Van Assche <bvanassche@....org>,
        yongmyung lee <ymhungry.lee@...sung.com>,
        Daejun Park <daejun7.park@...sung.com>,
        "alim.akhtar@...sung.com" <alim.akhtar@...sung.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        Zang Leigang <zangleigang@...ilicon.com>,
        Avi Shchislowski <Avi.Shchislowski@....com>,
        Bean Huo <beanhuo@...ron.com>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>
Subject: RE: [PATCH v5 04/10] scsi: ufshpb: Make eviction depends on region's
 reads

> > diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/scsi/ufs/ufshpb.c
> > index a8f8d13af21a..6f4fd22eaf2f 100644
> > --- a/drivers/scsi/ufs/ufshpb.c
> > +++ b/drivers/scsi/ufs/ufshpb.c
> > @@ -17,6 +17,7 @@
> >  #include "../sd.h"
> >
> >  #define ACTIVATION_THRESHOLD 4 /* 4 IOs */
> > +#define EVICTION_THRESHOLD (ACTIVATION_THRESHOLD << 6) /* 256 IOs
> */
> 
> Same here, can this be added as a sysfs entry?
Yes.  Please see last patch.

Thanks,
Avri

> 
> Thanks,
> Can Guo.