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Message-ID: <20200622121024.000018e3@Huawei.com>
Date: Mon, 22 Jun 2020 12:10:24 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: "Song Bao Hua (Barry Song)" <song.bao.hua@...ilicon.com>
CC: "herbert@...dor.apana.org.au" <herbert@...dor.apana.org.au>,
"davem@...emloft.net" <davem@...emloft.net>,
Seth Jennings <sjenning@...hat.com>,
Linuxarm <linuxarm@...wei.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-mm@...ck.org" <linux-mm@...ck.org>,
"linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
Dan Streetman <ddstreet@...e.org>,
Vitaly Wool <vitaly.wool@...sulko.com>
Subject: Re: [PATCH 1/3] crypto: permit users to specify numa node of acomp
hardware
On Mon, 22 Jun 2020 11:24:23 +0100
"Song Bao Hua (Barry Song)" <song.bao.hua@...ilicon.com> wrote:
> > -----Original Message-----
> > From: Jonathan Cameron
> > Sent: Monday, June 22, 2020 9:59 PM
> > To: Song Bao Hua (Barry Song) <song.bao.hua@...ilicon.com>
> > Cc: herbert@...dor.apana.org.au; davem@...emloft.net; Seth Jennings
> > <sjenning@...hat.com>; Linuxarm <linuxarm@...wei.com>;
> > linux-kernel@...r.kernel.org; linux-mm@...ck.org;
> > linux-crypto@...r.kernel.org; akpm@...ux-foundation.org; Dan Streetman
> > <ddstreet@...e.org>; Vitaly Wool <vitaly.wool@...sulko.com>
> > Subject: Re: [PATCH 1/3] crypto: permit users to specify numa node of acomp
> > hardware
> >
> > On Mon, 22 Jun 2020 14:48:59 +1200
> > Barry Song <song.bao.hua@...ilicon.com> wrote:
> >
> > > For a Linux server with NUMA, there are possibly multiple (de)compressors
> > > which are either local or remote to some NUMA node. Some drivers will
> > > automatically use the (de)compressor near the CPU calling acomp_alloc().
> > > However, it is not necessarily correct because users who send acomp_req
> > > could be from different NUMA node with the CPU which allocates acomp.
> > >
> > > Just like kernel has kmalloc() and kmalloc_node(), here crypto can have
> > > same support.
> > >
> > > Cc: Seth Jennings <sjenning@...hat.com>
> > > Cc: Dan Streetman <ddstreet@...e.org>
> > > Cc: Vitaly Wool <vitaly.wool@...sulko.com>
> > > Cc: Andrew Morton <akpm@...ux-foundation.org>
> > > Signed-off-by: Barry Song <song.bao.hua@...ilicon.com>
> >
> > Hi Barry,
> >
> > Seems sensible to me. A few trivial comments inline.
>
> Thanks for your review, Jonathan.
>
> >
> > Thanks,
> >
> > Jonathan
> >
> > > ---
> > > crypto/acompress.c | 8 ++++++++
> > > crypto/api.c | 22 ++++++++++++++--------
> > > crypto/internal.h | 23 +++++++++++++++++++----
> > > include/crypto/acompress.h | 7 +++++++
> > > include/linux/crypto.h | 3 ++-
> > > 5 files changed, 50 insertions(+), 13 deletions(-)
> > >
> > > diff --git a/crypto/acompress.c b/crypto/acompress.c
> > > index 84a76723e851..c32c72048a1c 100644
> > > --- a/crypto/acompress.c
> > > +++ b/crypto/acompress.c
> > > @@ -109,6 +109,14 @@ struct crypto_acomp *crypto_alloc_acomp(const
> > char *alg_name, u32 type,
> > > }
> > > EXPORT_SYMBOL_GPL(crypto_alloc_acomp);
> > >
> > > +struct crypto_acomp *crypto_alloc_acomp_node(const char *alg_name,
> > u32 type,
> > > + u32 mask, int node)
> > > +{
> > > + return crypto_alloc_tfm_node(alg_name, &crypto_acomp_type, type,
> > mask,
> > > + node);
> > > +}
> > > +EXPORT_SYMBOL_GPL(crypto_alloc_acomp_node);
> > > +
> > > struct acomp_req *acomp_request_alloc(struct crypto_acomp *acomp)
> > > {
> > > struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
> > > diff --git a/crypto/api.c b/crypto/api.c
> > > index edcf690800d4..4ecf712286af 100644
> > > --- a/crypto/api.c
> > > +++ b/crypto/api.c
> > > @@ -433,8 +433,9 @@ struct crypto_tfm *crypto_alloc_base(const char
> > *alg_name, u32 type, u32 mask)
> > > }
> > > EXPORT_SYMBOL_GPL(crypto_alloc_base);
> > >
> > > -void *crypto_create_tfm(struct crypto_alg *alg,
> > > - const struct crypto_type *frontend)
> > > +void *crypto_create_tfm_node(struct crypto_alg *alg,
> > > + const struct crypto_type *frontend,
> > > + int node)
> > > {
> > > char *mem;
> > > struct crypto_tfm *tfm = NULL;
> > > @@ -451,6 +452,7 @@ void *crypto_create_tfm(struct crypto_alg *alg,
> > >
> > > tfm = (struct crypto_tfm *)(mem + tfmsize);
> > > tfm->__crt_alg = alg;
> > > + tfm->node = node;
> > >
> > > err = frontend->init_tfm(tfm);
> > > if (err)
> > > @@ -472,7 +474,7 @@ void *crypto_create_tfm(struct crypto_alg *alg,
> > > out:
> > > return mem;
> > > }
> > > -EXPORT_SYMBOL_GPL(crypto_create_tfm);
> > > +EXPORT_SYMBOL_GPL(crypto_create_tfm_node);
> > >
> > > struct crypto_alg *crypto_find_alg(const char *alg_name,
> > > const struct crypto_type *frontend,
> > > @@ -490,11 +492,13 @@ struct crypto_alg *crypto_find_alg(const char
> > *alg_name,
> > > EXPORT_SYMBOL_GPL(crypto_find_alg);
> > >
> > > /*
> > > - * crypto_alloc_tfm - Locate algorithm and allocate transform
> > > + * crypto_alloc_tfm_node - Locate algorithm and allocate transform
> > > * @alg_name: Name of algorithm
> > > * @frontend: Frontend algorithm type
> > > * @type: Type of algorithm
> > > * @mask: Mask for type comparison
> > > + * @node: NUMA node in which users desire to put requests, if node is
> > > + * NUMA_NO_NODE, it means users have no special requirement.
> > > *
> > > * crypto_alloc_tfm() will first attempt to locate an already loaded
> > > * algorithm. If that fails and the kernel supports dynamically
> > loadable
> > > @@ -509,8 +513,10 @@ EXPORT_SYMBOL_GPL(crypto_find_alg);
> > > *
> > > * In case of error the return value is an error pointer.
> > > */
> > > -void *crypto_alloc_tfm(const char *alg_name,
> > > - const struct crypto_type *frontend, u32 type, u32 mask)
> > > +
> > > +void *crypto_alloc_tfm_node(const char *alg_name,
> > > + const struct crypto_type *frontend, u32 type, u32 mask,
> > > + int node)
> > > {
> > > void *tfm;
> > > int err;
> > > @@ -524,7 +530,7 @@ void *crypto_alloc_tfm(const char *alg_name,
> > > goto err;
> > > }
> > >
> > > - tfm = crypto_create_tfm(alg, frontend);
> > > + tfm = crypto_create_tfm_node(alg, frontend, node);
> > > if (!IS_ERR(tfm))
> > > return tfm;
> > >
> > > @@ -542,7 +548,7 @@ void *crypto_alloc_tfm(const char *alg_name,
> > >
> > > return ERR_PTR(err);
> > > }
> > > -EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
> > > +EXPORT_SYMBOL_GPL(crypto_alloc_tfm_node);
> > >
> > > /*
> > > * crypto_destroy_tfm - Free crypto transform
> > > diff --git a/crypto/internal.h b/crypto/internal.h
> > > index ff06a3bd1ca1..1b92a5a61852 100644
> > > --- a/crypto/internal.h
> > > +++ b/crypto/internal.h
> > > @@ -68,13 +68,28 @@ void crypto_remove_final(struct list_head *list);
> > > void crypto_shoot_alg(struct crypto_alg *alg);
> > > struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
> > > u32 mask);
> > > -void *crypto_create_tfm(struct crypto_alg *alg,
> > > - const struct crypto_type *frontend);
> > > +void *crypto_create_tfm_node(struct crypto_alg *alg,
> > > + const struct crypto_type *frontend, int node);
> > > +
> > > +static inline void *crypto_create_tfm(struct crypto_alg *alg,
> > > + const struct crypto_type *frontend)
> > > +{
> > > + return crypto_create_tfm_node(alg, frontend, NUMA_NO_NODE);
> > > +}
> > > +
> > > struct crypto_alg *crypto_find_alg(const char *alg_name,
> > > const struct crypto_type *frontend,
> > > u32 type, u32 mask);
> > > -void *crypto_alloc_tfm(const char *alg_name,
> > > - const struct crypto_type *frontend, u32 type, u32 mask);
> > > +
> > > +void *crypto_alloc_tfm_node(const char *alg_name,
> > > + const struct crypto_type *frontend, u32 type, u32 mask,
> > > + int node);
> > > +
> > > +static inline void *crypto_alloc_tfm(const char *alg_name,
> > > + const struct crypto_type *frontend, u32 type, u32 mask)
> > > +{
> > > + return crypto_alloc_tfm_node(alg_name, frontend, type, mask,
> > NUMA_NO_NODE);
> > > +}
> > >
> > > int crypto_probing_notify(unsigned long val, void *v);
> > >
> > > diff --git a/include/crypto/acompress.h b/include/crypto/acompress.h
> > > index 2b4d2b06ccbd..b1a78687014a 100644
> > > --- a/include/crypto/acompress.h
> > > +++ b/include/crypto/acompress.h
> > > @@ -106,6 +106,13 @@ struct acomp_alg {
> > > */
> > > struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32
> > type,
> > > u32 mask);
> > > +/**
> > > + * crypto_alloc_acomp_node() -- allocate ACOMPRESS tfm handle with
> > desired NUMA
> > > + * node
> >
> > Given slightly relaxed view on 80 chars now in place, I'd put that on one line.
> >
>
> Will put in another line.
>
> > Also kernel-doc needs to be complete so though it's tedious you should
> > document
> > the other parameters.
>
> You mean here the doc for other parameters should be copied from crypto_alloc_acomp()?
> If so, it is ok to me :-)
Yes. Always worth sanity checking new kernel-doc by
running the script over the file and fixing any warnings you have introduced.
>
> >
> > > + * @node: specifies the NUMA node the ZIP hardware belongs to
> > > + */
> > > +struct crypto_acomp *crypto_alloc_acomp_node(const char *alg_name,
> > u32 type,
> > > + u32 mask, int node);
> > >
> > > static inline struct crypto_tfm *crypto_acomp_tfm(struct crypto_acomp
> > *tfm)
> > > {
> > > diff --git a/include/linux/crypto.h b/include/linux/crypto.h
> > > index 763863dbc079..c1a47ce4c09e 100644
> > > --- a/include/linux/crypto.h
> > > +++ b/include/linux/crypto.h
> > > @@ -593,8 +593,9 @@ int crypto_has_alg(const char *name, u32 type, u32
> > mask);
> > > */
> > >
> > > struct crypto_tfm {
> > > -
> >
> > Stray change. Shouldn't be in this patch.
>
> Will have a separate patch for this.
Is it really worth bothering? I'd just leave a blank line there. Feels harmless!
>
> >
> >
> > > u32 crt_flags;
> > > +
> > > + int node;
> > >
> > > void (*exit)(struct crypto_tfm *tfm);
> > >
> >
>
> Best Regard
> Barry
>
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