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: 17+ 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 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
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