From: Lorenzo Bianconi <lorenzo@kernel.org>
To: netdev@vger.kernel.org, bpf@vger.kernel.org
Cc: davem@davemloft.net, ast@kernel.org, brouer@redhat.com,
daniel@iogearbox.net, toke@redhat.com,
lorenzo.bianconi@redhat.com, dsahern@kernel.org,
andrii.nakryiko@gmail.com
Subject: [PATCH v7 bpf-next 1/9] cpumap: use non-locked version __ptr_ring_consume_batched
Date: Tue, 14 Jul 2020 15:56:34 +0200 [thread overview]
Message-ID: <a9c7d06f9a009e282209f0c8c7b2c5d9b9ad60b9.1594734381.git.lorenzo@kernel.org> (raw)
In-Reply-To: <cover.1594734381.git.lorenzo@kernel.org>
From: Jesper Dangaard Brouer <brouer@redhat.com>
Commit 77361825bb01 ("bpf: cpumap use ptr_ring_consume_batched") changed
away from using single frame ptr_ring dequeue (__ptr_ring_consume) to
consume a batched, but it uses a locked version, which as the comment
explain isn't needed.
Change to use the non-locked version __ptr_ring_consume_batched.
Fixes: 77361825bb01 ("bpf: cpumap use ptr_ring_consume_batched")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
kernel/bpf/cpumap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c
index bd8658055c16..323c91c4fab0 100644
--- a/kernel/bpf/cpumap.c
+++ b/kernel/bpf/cpumap.c
@@ -259,7 +259,7 @@ static int cpu_map_kthread_run(void *data)
* kthread CPU pinned. Lockless access to ptr_ring
* consume side valid as no-resize allowed of queue.
*/
- n = ptr_ring_consume_batched(rcpu->queue, frames, CPUMAP_BATCH);
+ n = __ptr_ring_consume_batched(rcpu->queue, frames, CPUMAP_BATCH);
for (i = 0; i < n; i++) {
void *f = frames[i];
--
2.26.2
next prev parent reply other threads:[~2020-07-14 13:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-14 13:56 [PATCH v7 bpf-next 0/9] introduce support for XDP programs in CPUMAP Lorenzo Bianconi
2020-07-14 13:56 ` Lorenzo Bianconi [this message]
2020-07-14 13:56 ` [PATCH v7 bpf-next 2/9] net: refactor xdp_convert_buff_to_frame Lorenzo Bianconi
2020-07-14 13:56 ` [PATCH v7 bpf-next 3/9] samples/bpf: xdp_redirect_cpu_user: do not update bpf maps in option loop Lorenzo Bianconi
2020-07-14 13:56 ` [PATCH v7 bpf-next 4/9] cpumap: formalize map value as a named struct Lorenzo Bianconi
2020-07-14 13:56 ` [PATCH v7 bpf-next 5/9] bpf: cpumap: add the possibility to attach an eBPF program to cpumap Lorenzo Bianconi
2020-07-14 13:56 ` [PATCH v7 bpf-next 6/9] bpf: cpumap: implement XDP_REDIRECT for eBPF programs attached to map entries Lorenzo Bianconi
2020-07-14 13:56 ` [PATCH v7 bpf-next 7/9] libbpf: add SEC name for xdp programs attached to CPUMAP Lorenzo Bianconi
2020-07-14 13:56 ` [PATCH v7 bpf-next 8/9] samples/bpf: xdp_redirect_cpu: load a eBPF program on cpumap Lorenzo Bianconi
2020-07-14 13:56 ` [PATCH v7 bpf-next 9/9] selftest: add tests for XDP programs in CPUMAP entries Lorenzo Bianconi
2020-07-14 15:19 ` [PATCH v7 bpf-next 0/9] introduce support for XDP programs in CPUMAP Alexei Starovoitov
2020-07-14 15:35 ` Lorenzo Bianconi
2020-07-16 16:27 ` Daniel Borkmann
2020-07-17 10:00 ` Jakub Sitnicki
2020-07-17 10:08 ` Jakub Sitnicki
2020-07-17 11:06 ` Lorenzo Bianconi
2020-07-17 11:01 ` Lorenzo Bianconi
2020-07-17 15:13 ` Jakub Sitnicki
2020-07-17 16:31 ` Lorenzo Bianconi
2020-07-17 19:12 ` Lorenzo Bianconi
2020-07-17 23:13 ` Alexei Starovoitov
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=a9c7d06f9a009e282209f0c8c7b2c5d9b9ad60b9.1594734381.git.lorenzo@kernel.org \
--to=lorenzo@kernel.org \
--cc=andrii.nakryiko@gmail.com \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=brouer@redhat.com \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=dsahern@kernel.org \
--cc=lorenzo.bianconi@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=toke@redhat.com \
/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).