Re: [PATCH v5 1/3] ftrace: Build trace_btf.c when CONFIG_DEBUG_INFO_BTF is enabled
From: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Date: 2026-09-02 14:58:40
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On Tue, 1 Sep 2026 21:46:02 +0800 Donglin Peng [off-list ref] wrote:
From: pengdonglin <redacted> The trace_btf.c file provides BTF helper functions used by the ftrace subsystem. Make the compilation of trace_btf.c solely depend 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.
OK, nowadays BPF requires BTF. This looks good to me. Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Thanks,
quoted hunk ↗ jump to hunk
Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Xiaoqin Zhang <redacted> Signed-off-by: pengdonglin <redacted> --- 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 0ab5916575a9..d8faeb659cfc 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig@@ -770,7 +770,7 @@ 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 helpdiff --git a/kernel/trace/Makefile b/kernel/trace/Makefile index f934ff586bd4..28b08f31e7e5 100644 --- a/kernel/trace/Makefile +++ b/kernel/trace/Makefile@@ -119,7 +119,7 @@ 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
-- Masami Hiramatsu (Google) [off-list ref]