linux-kernel - [PATCH V11 1/5] riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230627111612.761164-2-suagrfillet@gmail.com>
Date:   Tue, 27 Jun 2023 19:16:08 +0800
From:   Song Shuai <suagrfillet@...il.com>
To:     paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, rostedt@...dmis.org, mhiramat@...nel.org,
        mark.rutland@....com, guoren@...nel.org, suagrfillet@...il.com,
        bjorn@...osinc.com, jszhang@...nel.org, conor.dooley@...rochip.com
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-trace-kernel@...r.kernel.org, songshuaishuai@...ylab.org
Subject: [PATCH V11 1/5] riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY

In RISC-V, -fpatchable-function-entry option is used to support
dynamic ftrace in this commit afc76b8b8011 ("riscv: Using
PATCHABLE_FUNCTION_ENTRY instead of MCOUNT"). So recordmcount
don't have to be called to create the __mcount_loc section before
the vmlinux linking.

Here selects FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY to tell
Makefile not to run recordmcount.

Link: https://lore.kernel.org/linux-riscv/CAAYs2=j3Eak9vU6xbAw0zPuoh00rh8v5C2U3fePkokZFibWs2g@mail.gmail.com/T/#t
Link: https://lore.kernel.org/linux-riscv/Y4jtfrJt+%2FQ5nMOz@spud/
Signed-off-by: Song Shuai <suagrfillet@...il.com>
Tested-by: Guo Ren <guoren@...nel.org>
Signed-off-by: Guo Ren <guoren@...nel.org>
Acked-by: Björn Töpel <bjorn@...osinc.com>
---
 arch/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 5966ad97c30c..756d854e6cdd 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -59,6 +59,7 @@ config RISCV
 	select COMMON_CLK
 	select CPU_PM if CPU_IDLE || HIBERNATION
 	select EDAC_SUPPORT
+	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
-- 
2.20.1