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Linux 5.10 compat: frame.h renamed objtool.h

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In Linux 5.10 the linux/frame.h header was renamed linux/objtool.h.
Add a configure check to detect and use the correctly named header.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #11085
This commit is contained in:
Brian Behlendorf 2020-11-02 21:39:50 +00:00
parent 7eefaf0ca0
commit 8c7d604c62
3 changed files with 30 additions and 0 deletions
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25
config/kernel-objtool.m4
View File

@ -1,3 +1,24 @@
dnl #
dnl # Detect objtool functionality.
dnl #
dnl #
dnl # Kernel 5.10: linux/frame.h was renamed linux/objtool.h
dnl #
AC_DEFUN([ZFS_AC_KERNEL_OBJTOOL_HEADER], [
AC_MSG_CHECKING([whether objtool header is available])
ZFS_LINUX_TRY_COMPILE([
#include <linux/objtool.h>
],[
],[
AC_DEFINE(HAVE_KERNEL_OBJTOOL_HEADER, 1,
[kernel has linux/objtool.h])
AC_MSG_RESULT(linux/objtool.h)
],[
AC_MSG_RESULT(linux/frame.h)
])
])
dnl # dnl #
dnl # Check for objtool support. dnl # Check for objtool support.
dnl # dnl #
@ -16,7 +37,11 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_OBJTOOL], [
dnl # 4.6 API added STACK_FRAME_NON_STANDARD macro dnl # 4.6 API added STACK_FRAME_NON_STANDARD macro
ZFS_LINUX_TEST_SRC([stack_frame_non_standard], [ ZFS_LINUX_TEST_SRC([stack_frame_non_standard], [
#ifdef HAVE_KERNEL_OBJTOOL_HEADER
#include <linux/objtool.h>
#else
#include <linux/frame.h> #include <linux/frame.h>
#endif
],[ ],[
#if !defined(STACK_FRAME_NON_STANDARD) #if !defined(STACK_FRAME_NON_STANDARD)
#error "STACK_FRAME_NON_STANDARD is not defined." #error "STACK_FRAME_NON_STANDARD is not defined."

1
config/kernel.m4
View File

@ -13,6 +13,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
dnl # Sequential ZFS_LINUX_TRY_COMPILE tests dnl # Sequential ZFS_LINUX_TRY_COMPILE tests
ZFS_AC_KERNEL_FPU_HEADER ZFS_AC_KERNEL_FPU_HEADER
ZFS_AC_KERNEL_OBJTOOL_HEADER
ZFS_AC_KERNEL_WAIT_QUEUE_ENTRY_T ZFS_AC_KERNEL_WAIT_QUEUE_ENTRY_T
ZFS_AC_KERNEL_MISC_MINOR ZFS_AC_KERNEL_MISC_MINOR
ZFS_AC_KERNEL_DECLARE_EVENT_CLASS ZFS_AC_KERNEL_DECLARE_EVENT_CLASS

4
include/sys/frame.h
View File

@ -25,7 +25,11 @@ extern "C" {
#if defined(__KERNEL__) && defined(HAVE_KERNEL_OBJTOOL) && \ #if defined(__KERNEL__) && defined(HAVE_KERNEL_OBJTOOL) && \
defined(HAVE_STACK_FRAME_NON_STANDARD) defined(HAVE_STACK_FRAME_NON_STANDARD)
#if defined(HAVE_KERNEL_OBJTOOL_HEADER)
#include <linux/objtool.h>
#else
#include <linux/frame.h> #include <linux/frame.h>
#endif
#else #else
#define STACK_FRAME_NON_STANDARD(func) #define STACK_FRAME_NON_STANDARD(func)
#endif #endif