[v12,for-next,1/4] riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY

Commit Message

Björn Töpel Nov. 30, 2023, 12:15 p.m. UTC

From: Song Shuai <[e-mail]>

In commit afc76b8b8011 ("riscv: Using PATCHABLE_FUNCTION_ENTRY instead
of MCOUNT") RISC-V added support for -fpatchable-function-entry, which
removes the need for recordmcount.

Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY to tell the build
system not to run recordmcount.

Link: https://lore.kernel.org/linux-riscv/CAAYs2=[e-mail]/T/#t
Link: https://lore.kernel.org/linux-riscv/Y4jtfrJt+%2FQ5nMOz@spud/
Signed-off-by: Song Shuai <[e-mail]>
Tested-by: Guo Ren <[e-mail]>
Signed-off-by: Guo Ren <[e-mail]>
Acked-by: Björn Töpel <[e-mail]>
---
 arch/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 95a2a06acc6a..69c95e42be9f 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -68,6 +68,7 @@  config RISCV
 	select CPU_PM if CPU_IDLE || HIBERNATION
 	select EDAC_SUPPORT
 	select FRAME_POINTER if PERF_EVENTS || (FUNCTION_TRACER && !DYNAMIC_FTRACE)
+	select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
 	select GENERIC_ARCH_TOPOLOGY
 	select GENERIC_ATOMIC64 if !64BIT
 	select GENERIC_CLOCKEVENTS_BROADCAST if SMP