From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Kent Overstreet <kent.overstreet@linux.dev>,
Mike Rapoport <rppt@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
"David S. Miller" <davem@davemloft.net>,
Dinh Nguyen <dinguyen@kernel.org>,
Heiko Carstens <hca@linux.ibm.com>, Helge Deller <deller@gmx.de>,
Huacai Chen <chenhuacai@kernel.org>,
Luis Chamberlain <mcgrof@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nadav Amit <nadav.amit@gmail.com>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Puranjay Mohan <puranjay12@gmail.com>,
Rick Edgecombe <rick.p.edgecombe@intel.com>,
Russell King <linux@armlinux.org.uk>, Song Liu <song@kernel.org>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Will Deacon <will@kernel.org>, bpf <bpf@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-mips@vger.kernel.org, linux-mm <linux-mm@kvack.org>,
linux-modules@vger.kernel.org, linux-parisc@vger.kernel.org,
linux-riscv <linux-riscv@lists.infradead.org>,
linux-s390 <linux-s390@vger.kernel.org>,
linux-trace-kernel@vger.kernel.org,
ppc-dev <linuxppc-dev@lists.ozlabs.org>,
loongarch@lists.linux.dev,
Network Development <netdev@vger.kernel.org>,
sparclinux@vger.kernel.org, X86 ML <x86@kernel.org>
Subject: Re: [PATCH v2 06/12] mm/execmem: introduce execmem_data_alloc()
Date: Tue, 20 Jun 2023 08:32:33 -0700 [thread overview]
Message-ID: <CAADnVQK_dWhPxdjs4HuAXWBTeVAf01er15dZU8tC+d=g6QCPXw@mail.gmail.com> (raw)
In-Reply-To: <20230620105104.60cb64d8@gandalf.local.home>
On Tue, Jun 20, 2023 at 7:51 AM Steven Rostedt <rostedt@goodmis.org> wrote:
>
> On Mon, 19 Jun 2023 02:43:58 +0200
> Thomas Gleixner <tglx@linutronix.de> wrote:
>
> > Now you might argue that it _is_ a "hotpath" due to the BPF usage, but
> > then even more so as any intermediate wrapper which converts from one
> > data representation to another data representation is not going to
> > increase performance, right?
>
> Just as a side note. BPF can not attach its return calling code to
> functions that have more than 6 parameters (3 on 32 bit x86), because of
> the way BPF return path trampoline works. It is a requirement that all
> parameters live in registers, and none on the stack.
It's actually 7 and that restriction is being lifted.
The patch set to attach to <= 12 is being discussed.
next prev parent reply other threads:[~2023-06-20 15:32 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-16 8:50 [PATCH v2 00/12] mm: jit/text allocator Mike Rapoport
2023-06-16 8:50 ` [PATCH v2 01/12] nios2: define virtual address space for modules Mike Rapoport
2023-06-16 16:00 ` Edgecombe, Rick P
2023-06-17 5:52 ` Mike Rapoport
2023-06-16 18:14 ` Song Liu
2023-06-16 8:50 ` [PATCH v2 02/12] mm: introduce execmem_text_alloc() and jit_text_alloc() Mike Rapoport
2023-06-16 16:48 ` Kent Overstreet
2023-06-16 18:18 ` Song Liu
2023-06-17 5:57 ` Mike Rapoport
2023-06-17 20:38 ` Andy Lutomirski
2023-06-18 8:00 ` Mike Rapoport
2023-06-19 17:09 ` Andy Lutomirski
2023-06-19 20:18 ` Nadav Amit
2023-06-20 17:24 ` Andy Lutomirski
2023-06-25 16:14 ` Mike Rapoport
2023-06-25 16:59 ` Andy Lutomirski
2023-06-25 17:42 ` Mike Rapoport
2023-06-25 18:07 ` Kent Overstreet
2023-06-26 6:13 ` Song Liu
2023-06-26 9:54 ` Puranjay Mohan
2023-06-26 12:23 ` Mark Rutland
2023-06-26 12:31 ` Mark Rutland
2023-06-26 17:48 ` Song Liu
2023-07-17 17:23 ` Andy Lutomirski
2023-06-26 13:01 ` Mark Rutland
2023-06-19 11:34 ` Kent Overstreet
2023-06-16 8:50 ` [PATCH v2 03/12] mm/execmem, arch: convert simple overrides of module_alloc to execmem Mike Rapoport
2023-06-16 18:36 ` Song Liu
2023-06-16 8:50 ` [PATCH v2 04/12] mm/execmem, arch: convert remaining " Mike Rapoport
2023-06-16 16:16 ` Edgecombe, Rick P
2023-06-17 6:10 ` Mike Rapoport
2023-06-16 18:53 ` Song Liu
2023-06-17 6:14 ` Mike Rapoport
2023-06-16 8:50 ` [PATCH v2 05/12] modules, execmem: drop module_alloc Mike Rapoport
2023-06-16 18:56 ` Song Liu
2023-06-16 8:50 ` [PATCH v2 06/12] mm/execmem: introduce execmem_data_alloc() Mike Rapoport
2023-06-16 16:55 ` Edgecombe, Rick P
2023-06-17 6:44 ` Mike Rapoport
2023-06-16 20:01 ` Song Liu
2023-06-17 6:51 ` Mike Rapoport
2023-06-18 22:32 ` Thomas Gleixner
2023-06-18 23:14 ` Kent Overstreet
2023-06-19 0:43 ` Thomas Gleixner
2023-06-19 2:12 ` Kent Overstreet
2023-06-20 14:51 ` Steven Rostedt
2023-06-20 15:32 ` Alexei Starovoitov [this message]
2023-06-19 15:23 ` Mike Rapoport
2023-06-16 8:50 ` [PATCH v2 07/12] arm64, execmem: extend execmem_params for generated code definitions Mike Rapoport
2023-06-16 20:05 ` Song Liu
2023-06-17 6:57 ` Mike Rapoport
2023-06-17 15:36 ` Kent Overstreet
2023-06-17 16:38 ` Song Liu
2023-06-17 20:37 ` Kent Overstreet
2023-06-16 8:50 ` [PATCH v2 08/12] riscv: extend execmem_params for kprobes allocations Mike Rapoport
2023-06-16 20:09 ` Song Liu
2023-06-16 8:50 ` [PATCH v2 09/12] powerpc: " Mike Rapoport
2023-06-16 20:09 ` Song Liu
2023-06-16 8:50 ` [PATCH v2 10/12] arch: make execmem setup available regardless of CONFIG_MODULES Mike Rapoport
2023-06-16 20:17 ` Song Liu
2023-06-16 8:50 ` [PATCH v2 11/12] x86/ftrace: enable dynamic ftrace without CONFIG_MODULES Mike Rapoport
2023-06-16 20:18 ` Song Liu
2023-06-16 8:50 ` [PATCH v2 12/12] kprobes: remove dependcy on CONFIG_MODULES Mike Rapoport
2023-06-16 11:44 ` Björn Töpel
2023-06-17 6:52 ` Mike Rapoport
2023-06-16 17:02 ` [PATCH v2 00/12] mm: jit/text allocator Edgecombe, Rick P
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAADnVQK_dWhPxdjs4HuAXWBTeVAf01er15dZU8tC+d=g6QCPXw@mail.gmail.com' \
--to=alexei.starovoitov@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=bpf@vger.kernel.org \
--cc=catalin.marinas@arm.com \
--cc=chenhuacai@kernel.org \
--cc=christophe.leroy@csgroup.eu \
--cc=davem@davemloft.net \
--cc=deller@gmx.de \
--cc=dinguyen@kernel.org \
--cc=hca@linux.ibm.com \
--cc=kent.overstreet@linux.dev \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mips@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linux-modules@vger.kernel.org \
--cc=linux-parisc@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=linux-s390@vger.kernel.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=loongarch@lists.linux.dev \
--cc=mark.rutland@arm.com \
--cc=mcgrof@kernel.org \
--cc=mpe@ellerman.id.au \
--cc=nadav.amit@gmail.com \
--cc=naveen.n.rao@linux.ibm.com \
--cc=netdev@vger.kernel.org \
--cc=palmer@dabbelt.com \
--cc=puranjay12@gmail.com \
--cc=rick.p.edgecombe@intel.com \
--cc=rostedt@goodmis.org \
--cc=rppt@kernel.org \
--cc=song@kernel.org \
--cc=sparclinux@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=tsbogend@alpha.franken.de \
--cc=will@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).