From: Donglin Peng <dolinux.peng@gmail.com>
To: rostedt@goodmis.org
Cc: mhiramat@kernel.org, linux-trace-kernel@vger.kernel.org,
bpf@vger.kernel.org, linux-kernel@vger.kernel.org,
pengdonglin <pengdonglin@xiaomi.com>,
Xiaoqin Zhang <zhangxiaoqin@xiaomi.com>
Subject: [PATCH v4 1/3] ftrace: Build trace_btf.c when CONFIG_DEBUG_INFO_BTF is enabled
Date: Mon, 15 Dec 2025 11:41:51 +0800 [thread overview]
Message-ID: <20251215034153.2367756-2-dolinux.peng@gmail.com> (raw)
In-Reply-To: <20251215034153.2367756-1-dolinux.peng@gmail.com>
From: pengdonglin <pengdonglin@xiaomi.com>
The trace_btf.c file provides BTF helper functions used by the ftrace
subsystem. This change makes its compilation solely dependent on
CONFIG_DEBUG_INFO_BTF, allowing features like funcgraph-retval to also
utilize these helpers.
Additionally, the redundant dependency on CONFIG_PROBE_EVENTS_BTF_ARGS
is removed, as CONFIG_DEBUG_INFO_BTF already depends on
CONFIG_BPF_SYSCALL.
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Xiaoqin Zhang <zhangxiaoqin@xiaomi.com>
Signed-off-by: pengdonglin <pengdonglin@xiaomi.com>
---
kernel/trace/Kconfig | 2 +-
kernel/trace/Makefile | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
index e1214b9dc990..653c1fcefa4c 100644
--- a/kernel/trace/Kconfig
+++ b/kernel/trace/Kconfig
@@ -755,7 +755,7 @@ config FPROBE_EVENTS
config PROBE_EVENTS_BTF_ARGS
depends on HAVE_FUNCTION_ARG_ACCESS_API
depends on FPROBE_EVENTS || KPROBE_EVENTS
- depends on DEBUG_INFO_BTF && BPF_SYSCALL
+ depends on DEBUG_INFO_BTF
bool "Support BTF function arguments for probe events"
default y
help
diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile
index fc5dcc888e13..6c4bf5a6c4f3 100644
--- a/kernel/trace/Makefile
+++ b/kernel/trace/Makefile
@@ -116,7 +116,7 @@ obj-$(CONFIG_KGDB_KDB) += trace_kdb.o
endif
obj-$(CONFIG_DYNAMIC_EVENTS) += trace_dynevent.o
obj-$(CONFIG_PROBE_EVENTS) += trace_probe.o
-obj-$(CONFIG_PROBE_EVENTS_BTF_ARGS) += trace_btf.o
+obj-$(CONFIG_DEBUG_INFO_BTF) += trace_btf.o
obj-$(CONFIG_UPROBE_EVENTS) += trace_uprobe.o
obj-$(CONFIG_BOOTTIME_TRACING) += trace_boot.o
obj-$(CONFIG_FTRACE_RECORD_RECURSION) += trace_recursion_record.o
--
2.34.1
next prev parent reply other threads:[~2025-12-15 3:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-15 3:41 [PATCH v4 0/3] Use BTF to trim return values Donglin Peng
2025-12-15 3:41 ` Donglin Peng [this message]
2025-12-15 3:41 ` [PATCH v4 2/3] fgraph: Enhance funcgraph-retval with BTF-based type-aware output Donglin Peng
2025-12-15 3:41 ` [PATCH v4 3/3] tracing: Update funcgraph-retval documentation Donglin Peng
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