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Date: Mon, 22 Jun 2020 10:24:23 +0000
From: "Song Bao Hua (Barry Song)" <song.bao.hua@...ilicon.com>
To: Jonathan Cameron <jonathan.cameron@...wei.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
> -----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 :-)
>
> > + * @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.
>
>
> > u32 crt_flags;
> > +
> > + int node;
> >
> > void (*exit)(struct crypto_tfm *tfm);
> >
>
Best Regard
Barry
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