2018-02-15 04:01:15 +03:00
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dnl #
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dnl # Enabled by default it provides a minimal level of memory tracking.
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dnl # A total count of bytes allocated is kept for each alloc and free.
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dnl # Then at module unload time a report to the console will be printed
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dnl # if memory was leaked.
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dnl #
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AC_DEFUN([SPL_AC_DEBUG_KMEM], [
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AC_ARG_ENABLE([debug-kmem],
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[AS_HELP_STRING([--enable-debug-kmem],
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[Enable basic kmem accounting @<:@default=no@:>@])],
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[],
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[enable_debug_kmem=no])
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AS_IF([test "x$enable_debug_kmem" = xyes],
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[
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"
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DEBUG_KMEM="_with_debug_kmem"
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AC_DEFINE([DEBUG_KMEM], [1],
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[Define to 1 to enable basic kmem accounting])
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], [
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DEBUG_KMEM="_without_debug_kmem"
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])
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AC_SUBST(DEBUG_KMEM)
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AC_MSG_CHECKING([whether basic kmem accounting is enabled])
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AC_MSG_RESULT([$enable_debug_kmem])
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])
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dnl #
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dnl # Disabled by default it provides detailed memory tracking. This
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dnl # feature also requires --enable-debug-kmem to be set. When enabled
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dnl # not only will total bytes be tracked but also the location of every
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dnl # alloc and free. When the SPL module is unloaded a list of all leaked
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dnl # addresses and where they were allocated will be dumped to the console.
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dnl # Enabling this feature has a significant impact on performance but it
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dnl # makes finding memory leaks pretty straight forward.
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dnl #
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AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [
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AC_ARG_ENABLE([debug-kmem-tracking],
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[AS_HELP_STRING([--enable-debug-kmem-tracking],
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[Enable detailed kmem tracking @<:@default=no@:>@])],
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[],
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[enable_debug_kmem_tracking=no])
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AS_IF([test "x$enable_debug_kmem_tracking" = xyes],
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[
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KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING"
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DEBUG_KMEM_TRACKING="_with_debug_kmem_tracking"
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AC_DEFINE([DEBUG_KMEM_TRACKING], [1],
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[Define to 1 to enable detailed kmem tracking])
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], [
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DEBUG_KMEM_TRACKING="_without_debug_kmem_tracking"
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])
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AC_SUBST(DEBUG_KMEM_TRACKING)
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AC_MSG_CHECKING([whether detailed kmem tracking is enabled])
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AC_MSG_RESULT([$enable_debug_kmem_tracking])
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])
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2019-07-21 20:34:07 +03:00
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dnl #
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dnl # 4.12 API,
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dnl # Added kvmalloc allocation strategy
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_KVMALLOC], [
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ZFS_LINUX_TEST_SRC([kvmalloc], [
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#include <linux/mm.h>
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],[
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void *p __attribute__ ((unused));
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p = kvmalloc(0, GFP_KERNEL);
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_KVMALLOC], [
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AC_MSG_CHECKING([whether kvmalloc(ptr, flags) is available])
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ZFS_LINUX_TEST_RESULT([kvmalloc], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_KVMALLOC, 1, [kvmalloc exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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