From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: JaeSang Yoo <js.yoo.5b@gmail.com>,
JaeSang Yoo <jsyoo5b@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
Sasha Levin <sashal@kernel.org>,
mingo@redhat.com
Subject: [PATCH AUTOSEL 5.10 19/23] tracing: Fix tp_printk option related with tp_printk_stop_on_boot
Date: Tue, 15 Feb 2022 10:29:53 -0500 [thread overview]
Message-ID: <20220215152957.581303-19-sashal@kernel.org> (raw)
In-Reply-To: <20220215152957.581303-1-sashal@kernel.org>
From: JaeSang Yoo <js.yoo.5b@gmail.com>
[ Upstream commit 3203ce39ac0b2a57a84382ec184c7d4a0bede175 ]
The kernel parameter "tp_printk_stop_on_boot" starts with "tp_printk" which is
the same as another kernel parameter "tp_printk". If "tp_printk" setup is
called before the "tp_printk_stop_on_boot", it will override the latter
and keep it from being set.
This is similar to other kernel parameter issues, such as:
Commit 745a600cf1a6 ("um: console: Ignore console= option")
or init/do_mounts.c:45 (setup function of "ro" kernel param)
Fix it by checking for a "_" right after the "tp_printk" and if that
exists do not process the parameter.
Link: https://lkml.kernel.org/r/20220208195421.969326-1-jsyoo5b@gmail.com
Signed-off-by: JaeSang Yoo <jsyoo5b@gmail.com>
[ Fixed up change log and added space after if condition ]
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
kernel/trace/trace.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index a0729213f37be..f9fad789321b0 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -250,6 +250,10 @@ __setup("trace_clock=", set_trace_boot_clock);
static int __init set_tracepoint_printk(char *str)
{
+ /* Ignore the "tp_printk_stop_on_boot" param */
+ if (*str == '_')
+ return 0;
+
if ((strcmp(str, "=0") != 0 && strcmp(str, "=off") != 0))
tracepoint_printk = 1;
return 1;
--
2.34.1
next prev parent reply other threads:[~2022-02-15 15:34 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-15 15:29 [PATCH AUTOSEL 5.10 01/23] ARM: OMAP2+: hwmod: Add of_node_put() before break Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 02/23] ARM: OMAP2+: adjust the location of put_device() call in omapdss_init_of Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 03/23] phy: usb: Leave some clocks running during suspend Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 04/23] usb: usb251xb: add boost-up property support Sasha Levin
2022-02-20 10:12 ` Pavel Machek
2022-02-28 12:23 ` Richard Leitner
2022-03-02 9:24 ` Tommaso Merciai
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 05/23] irqchip/sifive-plic: Add missing thead,c900-plic match string Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 06/23] netfilter: conntrack: don't refresh sctp entries in closed state Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 07/23] arm64: dts: meson-gx: add ATF BL32 reserved-memory region Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 08/23] arm64: dts: meson-g12: " Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 09/23] arm64: dts: meson-g12: drop BL32 region from SEI510/SEI610 Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 10/23] pidfd: fix test failure due to stack overflow on some arches Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 11/23] selftests: fixup build warnings in pidfd / clone3 tests Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 12/23] kconfig: let 'shell' return enough output for deep path names Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 13/23] scsi: lpfc: Remove NVMe support if kernel has NVME_FC disabled Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 14/23] scsi: lpfc: Reduce log messages seen after firmware download Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 15/23] ata: libata-core: Disable TRIM on M88V29 Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 16/23] soc: aspeed: lpc-ctrl: Block error printing on probe defer cases Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 17/23] xprtrdma: fix pointer derefs in error cases of rpcrdma_ep_create Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 18/23] drm/rockchip: dw_hdmi: Do not leave clock enabled in error case Sasha Levin
2022-02-15 15:29 ` Sasha Levin [this message]
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 20/23] NFSD: Fix offset type in I/O trace points Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 21/23] net: usb: qmi_wwan: Add support for Dell DW5829e Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 22/23] net: macb: Align the dma and coherent dma masks Sasha Levin
2022-02-15 15:29 ` [PATCH AUTOSEL 5.10 23/23] kconfig: fix failing to generate auto.conf Sasha Levin
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=20220215152957.581303-19-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=js.yoo.5b@gmail.com \
--cc=jsyoo5b@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=rostedt@goodmis.org \
--cc=stable@vger.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).