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[RFC,10/10] unwind/x86/64: Add HAVE_USER_UNWIND_SFRAME

Message ID ec004e900e02c9c85cf8c89d4c26d4168a6c5d18.1699487758.git.jpoimboe@kernel.org
State New
Headers
Series perf: user space sframe unwinding |

Commit Message

Josh Poimboeuf Nov. 9, 2023, 12:41 a.m. UTC 
  Binutils 2.40 supports generating sframe for x86_64.  It works well in
testing so enable it.

NOTE: An out-of-tree glibc patch is still needed to enable setting
PR_ADD_SFRAME for shared libraries and dlopens.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
 arch/x86/Kconfig | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 95939cd54dfe..770d0528e4c9 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -279,6 +279,7 @@  config X86
 	select HAVE_UNSTABLE_SCHED_CLOCK
 	select HAVE_USER_RETURN_NOTIFIER
 	select HAVE_USER_UNWIND
+	select HAVE_USER_UNWIND_SFRAME		if X86_64
 	select HAVE_GENERIC_VDSO
 	select HOTPLUG_PARALLEL			if SMP && X86_64
 	select HOTPLUG_SMT			if SMP