Re: [PATCH v13 14/14] powerpc/64s/radix: Enable huge vmalloc mappings

2021-04-16 Thread Nicholas Piggin
Excerpts from Andrew Morton's message of April 16, 2021 4:55 am: > On Thu, 15 Apr 2021 12:23:55 +0200 Christophe Leroy > wrote: >> > + * is done. STRICT_MODULE_RWX may require extra work to support this >> > + * too. >> > + */ >> > >> > - return __vmalloc_node_range(size, 1,

Re: [PATCH v13 14/14] powerpc/64s/radix: Enable huge vmalloc mappings

2021-04-15 Thread Stephen Rothwell
Hi all, On Thu, 15 Apr 2021 11:55:29 -0700 Andrew Morton wrote: > > On Thu, 15 Apr 2021 12:23:55 +0200 Christophe Leroy > wrote: > > > + * is done. STRICT_MODULE_RWX may require extra work to support this > > > + * too. > > > + */ > > > > > > - return __vmalloc_node_range(size, 1,

Re: [PATCH v13 14/14] powerpc/64s/radix: Enable huge vmalloc mappings

2021-04-15 Thread Andrew Morton
On Thu, 15 Apr 2021 12:23:55 +0200 Christophe Leroy wrote: > > +* is done. STRICT_MODULE_RWX may require extra work to support this > > +* too. > > +*/ > > > > - return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, > > GFP_KERNEL, > > -

Re: [PATCH v13 14/14] powerpc/64s/radix: Enable huge vmalloc mappings

2021-04-15 Thread Christophe Leroy
Hi Nick, Le 17/03/2021 à 07:24, Nicholas Piggin a écrit : This reduces TLB misses by nearly 30x on a `git diff` workload on a 2-node POWER9 (59,800 -> 2,100) and reduces CPU cycles by 0.54%, due to vfs hashes being allocated with 2MB pages. Cc: linuxppc-dev@lists.ozlabs.org Acked-by: Michael

[PATCH v13 14/14] powerpc/64s/radix: Enable huge vmalloc mappings

2021-03-17 Thread Nicholas Piggin
This reduces TLB misses by nearly 30x on a `git diff` workload on a 2-node POWER9 (59,800 -> 2,100) and reduces CPU cycles by 0.54%, due to vfs hashes being allocated with 2MB pages. Cc: linuxppc-dev@lists.ozlabs.org Acked-by: Michael Ellerman Signed-off-by: Nicholas Piggin ---