-#
-# LIBCFS_FUNC_DUMP_TRACE
-#
-# 2.6.23 exports dump_trace() so we can dump_stack() on any task
-# 2.6.24 has stacktrace_ops.address with "reliable" parameter
-#
-AC_DEFUN([LIBCFS_FUNC_DUMP_TRACE],
-[LB_CHECK_SYMBOL_EXPORT([dump_trace],
-[kernel/ksyms.c arch/${LINUX_ARCH%_64}/kernel/traps_64.c arch/x86/kernel/dumpstack_32.c arch/x86/kernel/dumpstack_64.c],[
- tmp_flags="$EXTRA_KCFLAGS"
- EXTRA_KCFLAGS="-Werror"
- AC_MSG_CHECKING([whether we can really use dump_trace])
- LB_LINUX_TRY_COMPILE([
- struct task_struct;
- struct pt_regs;
- #include <asm/stacktrace.h>
- ],[
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_DUMP_TRACE, 1, [dump_trace is exported])
- ],[
- AC_MSG_RESULT(no)
- ],[
- ])
- AC_MSG_CHECKING([whether print_trace_address has reliable argument])
- LB_LINUX_TRY_COMPILE([
- struct task_struct;
- struct pt_regs;
- #include <asm/stacktrace.h>
- ],[
- ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_TRACE_ADDRESS_RELIABLE, 1,
- [print_trace_address has reliable argument])
- ],[
- AC_MSG_RESULT(no)
- ],[
- ])
- AC_MSG_CHECKING([whether stacktrace_ops.warning is exist])
- LB_LINUX_TRY_COMPILE([
- struct task_struct;
- struct pt_regs;
- #include <asm/stacktrace.h>
- ],[
- ((struct stacktrace_ops *)0)->warning(NULL, NULL);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_STACKTRACE_WARNING, 1, [stacktrace_ops.warning is exist])
- ],[
- AC_MSG_RESULT(no)
- ],[
- ])
- AC_MSG_CHECKING([dump_trace want address])
- LB_LINUX_TRY_COMPILE([
- struct task_struct;
- struct pt_regs;
- #include <asm/stacktrace.h>
- ],[
- dump_trace(NULL, NULL, NULL, 0, NULL, NULL);
- ],[
- AC_MSG_RESULT(yes)
- AC_DEFINE(HAVE_DUMP_TRACE_ADDRESS, 1,
- [dump_trace want address argument])
- ],[
- AC_MSG_RESULT(no)
- ],[
- ])
-
-EXTRA_KCFLAGS="$tmp_flags"
-])
-])
-
-