From: Song Liu <song@kernel.org>
To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
live-patching@vger.kernel.org
Cc: rostedt@goodmis.org, mhiramat@kernel.org, mark.rutland@arm.com,
kernel-team@meta.com, Song Liu <song@kernel.org>
Subject: [PATCH v2 12/16] tracing: Mark the tracing_gen_ctx helpers notrace
Date: Thu, 22 Oct 2026 18:10:45 -0700 [thread overview]
Message-ID: <20261023011049.1164625-13-song@kernel.org> (raw)
In-Reply-To: <20261023011049.1164625-1-song@kernel.org>
tracing_gen_ctx(), tracing_gen_ctx_flags() and tracing_gen_ctx_dec()
are called by ftrace callbacks before they take any recursion
protection, for example function_test_events_call() in
kernel/trace/trace_events.c, which is built with -pg when
CONFIG_FUNCTION_SELF_TRACING=y. They are plain inline functions, so an
out-of-line copy is untraced only because inline implies notrace.
Mark them notrace explicitly. No functional change.
Assisted-by: Claude:claude-opus-5
Signed-off-by: Song Liu <song@kernel.org>
---
include/linux/trace_events.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index 5cbd09c8be8d..15990e23a662 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -197,13 +197,13 @@ enum trace_flag_type {
TRACE_FLAG_BH_OFF = 0x80,
};
-static inline unsigned int tracing_gen_ctx_flags(unsigned long irqflags)
+static inline unsigned int notrace tracing_gen_ctx_flags(unsigned long irqflags)
{
unsigned int irq_status = irqs_disabled_flags(irqflags) ?
TRACE_FLAG_IRQS_OFF : 0;
return tracing_gen_ctx_irq_test(irq_status);
}
-static inline unsigned int tracing_gen_ctx(void)
+static inline unsigned int notrace tracing_gen_ctx(void)
{
unsigned long irqflags;
@@ -211,7 +211,7 @@ static inline unsigned int tracing_gen_ctx(void)
return tracing_gen_ctx_flags(irqflags);
}
-static inline unsigned int tracing_gen_ctx_dec(void)
+static inline unsigned int notrace tracing_gen_ctx_dec(void)
{
unsigned int trace_ctx;
--
2.53.0-Meta
next prev parent reply other threads:[~2026-10-23 1:11 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-23 1:10 [PATCH v2 00/16] Move notrace from inline to __always_inline Song Liu
2026-10-23 1:10 ` [PATCH v2 01/16] x86/paravirt: Mark native pv_ops helpers notrace Song Liu
2026-10-23 1:10 ` [PATCH v2 02/16] x86: Mark CPU state helpers used by resume and kexec notrace Song Liu
2026-10-23 1:10 ` [PATCH v2 03/16] bpf: Mark bpf_spin_lock helpers notrace Song Liu
2026-10-23 1:10 ` [PATCH v2 04/16] bpf: Mark the BPF trampoline " Song Liu
2026-10-23 1:10 ` [PATCH v2 05/16] bpf: Mark the bpf_mem_alloc fast path " Song Liu
2026-10-23 1:10 ` [PATCH v2 06/16] u64_stats: Mark the update helpers used by BPF notrace Song Liu
2026-10-23 1:10 ` [PATCH v2 07/16] tracepoint: Mark __do_trace_##name() notrace Song Liu
2026-10-23 13:32 ` Steven Rostedt
2026-10-23 18:04 ` Song Liu
2026-10-28 22:20 ` Song Liu
2026-10-29 1:08 ` Steven Rostedt
2026-10-23 1:10 ` [PATCH v2 08/16] srcu: Mark the fast notrace read-side helpers notrace Song Liu
2026-10-23 1:10 ` [PATCH v2 09/16] arm64: Mark the preempt count " Song Liu
2026-10-23 1:10 ` [PATCH v2 10/16] powerpc, csky, mips, sh: Mark the accessors behind current notrace Song Liu
2026-10-23 1:10 ` [PATCH v2 11/16] rcu: Mark the Tiny RCU rcu_is_watching() notrace Song Liu
2026-10-23 1:10 ` Song Liu [this message]
2026-10-23 1:10 ` [PATCH v2 13/16] ktime: Mark ktime_to_ns() notrace Song Liu
2026-10-23 1:10 ` [PATCH v2 14/16] kallsyms: Mark the kernel text address checks notrace Song Liu
2026-10-23 1:10 ` [PATCH v2 15/16] uaccess: Mark pagefault_disable() and pagefault_enable() notrace Song Liu
2026-10-23 1:10 ` [PATCH v2 16/16] compiler_types: Move notrace from inline to __always_inline Song Liu
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=20261023011049.1164625-13-song@kernel.org \
--to=song@kernel.org \
--cc=kernel-team@meta.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=live-patching@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=mhiramat@kernel.org \
--cc=rostedt@goodmis.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.