linux-kernel - Re: [PATCH v3 25/35] xfs: Memory allocation profiling fixups

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Wed, 14 Feb 2024 14:36:06 -0800
From: Suren Baghdasaryan <surenb@...gle.com>
To: Dave Chinner <david@...morbit.com>
Cc: akpm@...ux-foundation.org, kent.overstreet@...ux.dev, mhocko@...e.com, 
	vbabka@...e.cz, hannes@...xchg.org, roman.gushchin@...ux.dev, mgorman@...e.de, 
	dave@...olabs.net, willy@...radead.org, liam.howlett@...cle.com, 
	corbet@....net, void@...ifault.com, peterz@...radead.org, 
	juri.lelli@...hat.com, catalin.marinas@....com, will@...nel.org, 
	arnd@...db.de, tglx@...utronix.de, mingo@...hat.com, 
	dave.hansen@...ux.intel.com, x86@...nel.org, peterx@...hat.com, 
	david@...hat.com, axboe@...nel.dk, mcgrof@...nel.org, masahiroy@...nel.org, 
	nathan@...nel.org, dennis@...nel.org, tj@...nel.org, muchun.song@...ux.dev, 
	rppt@...nel.org, paulmck@...nel.org, pasha.tatashin@...een.com, 
	yosryahmed@...gle.com, yuzhao@...gle.com, dhowells@...hat.com, 
	hughd@...gle.com, andreyknvl@...il.com, keescook@...omium.org, 
	ndesaulniers@...gle.com, vvvvvv@...gle.com, gregkh@...uxfoundation.org, 
	ebiggers@...gle.com, ytcoode@...il.com, vincent.guittot@...aro.org, 
	dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com, 
	bristot@...hat.com, vschneid@...hat.com, cl@...ux.com, penberg@...nel.org, 
	iamjoonsoo.kim@....com, 42.hyeyoo@...il.com, glider@...gle.com, 
	elver@...gle.com, dvyukov@...gle.com, shakeelb@...gle.com, 
	songmuchun@...edance.com, jbaron@...mai.com, rientjes@...gle.com, 
	minchan@...gle.com, kaleshsingh@...gle.com, kernel-team@...roid.com, 
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, 
	iommu@...ts.linux.dev, linux-arch@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, linux-mm@...ck.org, 
	linux-modules@...r.kernel.org, kasan-dev@...glegroups.com, 
	cgroups@...r.kernel.org
Subject: Re: [PATCH v3 25/35] xfs: Memory allocation profiling fixups

On Wed, Feb 14, 2024 at 2:22 PM Dave Chinner <david@...morbit.com> wrote:
>
> On Mon, Feb 12, 2024 at 01:39:11PM -0800, Suren Baghdasaryan wrote:
> > From: Kent Overstreet <kent.overstreet@...ux.dev>
> >
> > This adds an alloc_hooks() wrapper around kmem_alloc(), so that we can
> > have allocations accounted to the proper callsite.
> >
> > Signed-off-by: Kent Overstreet <kent.overstreet@...ux.dev>
> > Signed-off-by: Suren Baghdasaryan <surenb@...gle.com>
> > ---
> >  fs/xfs/kmem.c |  4 ++--
> >  fs/xfs/kmem.h | 10 ++++------
> >  2 files changed, 6 insertions(+), 8 deletions(-)
> >
> > diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c
> > index c557a030acfe..9aa57a4e2478 100644
> > --- a/fs/xfs/kmem.c
> > +++ b/fs/xfs/kmem.c
> > @@ -8,7 +8,7 @@
> >  #include "xfs_trace.h"
> >
> >  void *
> > -kmem_alloc(size_t size, xfs_km_flags_t flags)
> > +kmem_alloc_noprof(size_t size, xfs_km_flags_t flags)
> >  {
> >       int     retries = 0;
> >       gfp_t   lflags = kmem_flags_convert(flags);
> > @@ -17,7 +17,7 @@ kmem_alloc(size_t size, xfs_km_flags_t flags)
> >       trace_kmem_alloc(size, flags, _RET_IP_);
> >
> >       do {
> > -             ptr = kmalloc(size, lflags);
> > +             ptr = kmalloc_noprof(size, lflags);
> >               if (ptr || (flags & KM_MAYFAIL))
> >                       return ptr;
> >               if (!(++retries % 100))
> > diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h
> > index b987dc2c6851..c4cf1dc2a7af 100644
> > --- a/fs/xfs/kmem.h
> > +++ b/fs/xfs/kmem.h
> > @@ -6,6 +6,7 @@
> >  #ifndef __XFS_SUPPORT_KMEM_H__
> >  #define __XFS_SUPPORT_KMEM_H__
> >
> > +#include <linux/alloc_tag.h>
> >  #include <linux/slab.h>
> >  #include <linux/sched.h>
> >  #include <linux/mm.h>
> > @@ -56,18 +57,15 @@ kmem_flags_convert(xfs_km_flags_t flags)
> >       return lflags;
> >  }
> >
> > -extern void *kmem_alloc(size_t, xfs_km_flags_t);
> >  static inline void  kmem_free(const void *ptr)
> >  {
> >       kvfree(ptr);
> >  }
> >
> > +extern void *kmem_alloc_noprof(size_t, xfs_km_flags_t);
> > +#define kmem_alloc(...)                      alloc_hooks(kmem_alloc_noprof(__VA_ARGS__))
> >
> > -static inline void *
> > -kmem_zalloc(size_t size, xfs_km_flags_t flags)
> > -{
> > -     return kmem_alloc(size, flags | KM_ZERO);
> > -}
> > +#define kmem_zalloc(_size, _flags)   kmem_alloc((_size), (_flags) | KM_ZERO)
> >
> >  /*
> >   * Zone interfaces
> > --
> > 2.43.0.687.g38aa6559b0-goog
>
> These changes can be dropped - the fs/xfs/kmem.[ch] stuff is now
> gone in linux-xfs/for-next.

Thanks for the note. Will drop in the next submission.

>
> -Dave.
> --
> Dave Chinner
> david@...morbit.com