diff options
Diffstat (limited to 'config/spl-build.m4')
| -rw-r--r-- | config/spl-build.m4 | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/config/spl-build.m4 b/config/spl-build.m4 index a20ee38d1..205eb6bc5 100644 --- a/config/spl-build.m4 +++ b/config/spl-build.m4 @@ -19,6 +19,7 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ AC_SUBST(KERNELCPPFLAGS) SPL_AC_DEBUG + SPL_AC_DEBUG_LOG SPL_AC_DEBUG_KMEM SPL_AC_DEBUG_KMEM_TRACKING SPL_AC_ATOMIC_SPINLOCK @@ -486,6 +487,33 @@ AC_DEFUN([SPL_AC_DEBUG], [ ]) dnl # +dnl # Enabled by default it provides a basic debug log infrastructure. +dnl # Each subsystem registers itself with a name and logs messages +dnl # using predefined types. If the debug mask it set to allow the +dnl # message type it will be written to the internal log. The log +dnl # can be dumped to a file by echoing 1 to the 'dump' proc entry, +dnl # after dumping the log it must be decoded using the spl utility. +dnl # +dnl # echo 1 >/proc/sys/kernel/spl/debug/dump +dnl # spl /tmp/spl-log.xxx.yyy /tmp/spl-log.xxx.yyy.txt +dnl # +AC_DEFUN([SPL_AC_DEBUG_LOG], [ + AC_ARG_ENABLE([debug-log], + [AS_HELP_STRING([--enable-debug-log], + [Enable basic debug logging @<:@default=yes@:>@])], + [], + [enable_debug_log=yes]) + + AS_IF([test "x$enable_debug_log" = xyes], + [AC_DEFINE([DEBUG_LOG], [1], + [Define to 1 to enable basic debug logging]) + KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_LOG"]) + + AC_MSG_CHECKING([whether basic debug logging is enabled]) + AC_MSG_RESULT([$enable_debug_log]) +]) + +dnl # dnl # Enabled by default it provides a minimal level of memory tracking. dnl # A total count of bytes allocated is kept for each alloc and free. dnl # Then at module unload time a report to the console will be printed |