diff options
Diffstat (limited to 'config/kernel-kmem.m4')
| -rw-r--r-- | config/kernel-kmem.m4 | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/config/kernel-kmem.m4 b/config/kernel-kmem.m4 new file mode 100644 index 000000000000..43f9e72f88d8 --- /dev/null +++ b/config/kernel-kmem.m4 @@ -0,0 +1,108 @@ +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 +dnl # if memory was leaked. +dnl # +AC_DEFUN([SPL_AC_DEBUG_KMEM], [ + AC_ARG_ENABLE([debug-kmem], + [AS_HELP_STRING([--enable-debug-kmem], + [Enable basic kmem accounting @<:@default=no@:>@])], + [], + [enable_debug_kmem=no]) + + AS_IF([test "x$enable_debug_kmem" = xyes], + [ + KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM" + DEBUG_KMEM="_with_debug_kmem" + AC_DEFINE([DEBUG_KMEM], [1], + [Define to 1 to enable basic kmem accounting]) + ], [ + DEBUG_KMEM="_without_debug_kmem" + ]) + + AC_SUBST(DEBUG_KMEM) + AC_MSG_CHECKING([whether basic kmem accounting is enabled]) + AC_MSG_RESULT([$enable_debug_kmem]) +]) + +dnl # +dnl # Disabled by default it provides detailed memory tracking. This +dnl # feature also requires --enable-debug-kmem to be set. When enabled +dnl # not only will total bytes be tracked but also the location of every +dnl # alloc and free. When the SPL module is unloaded a list of all leaked +dnl # addresses and where they were allocated will be dumped to the console. +dnl # Enabling this feature has a significant impact on performance but it +dnl # makes finding memory leaks pretty straight forward. +dnl # +AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [ + AC_ARG_ENABLE([debug-kmem-tracking], + [AS_HELP_STRING([--enable-debug-kmem-tracking], + [Enable detailed kmem tracking @<:@default=no@:>@])], + [], + [enable_debug_kmem_tracking=no]) + + AS_IF([test "x$enable_debug_kmem_tracking" = xyes], + [ + KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING" + DEBUG_KMEM_TRACKING="_with_debug_kmem_tracking" + AC_DEFINE([DEBUG_KMEM_TRACKING], [1], + [Define to 1 to enable detailed kmem tracking]) + ], [ + DEBUG_KMEM_TRACKING="_without_debug_kmem_tracking" + ]) + + AC_SUBST(DEBUG_KMEM_TRACKING) + AC_MSG_CHECKING([whether detailed kmem tracking is enabled]) + AC_MSG_RESULT([$enable_debug_kmem_tracking]) +]) + +dnl # +dnl # 4.12 API, +dnl # Added kvmalloc allocation strategy +dnl # +AC_DEFUN([ZFS_AC_KERNEL_SRC_KVMALLOC], [ + ZFS_LINUX_TEST_SRC([kvmalloc], [ + #include <linux/mm.h> + ],[ + void *p __attribute__ ((unused)); + + p = kvmalloc(0, GFP_KERNEL); + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_KVMALLOC], [ + AC_MSG_CHECKING([whether kvmalloc(ptr, flags) is available]) + ZFS_LINUX_TEST_RESULT([kvmalloc], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_KVMALLOC, 1, [kvmalloc exists]) + ],[ + AC_MSG_RESULT(no) + ]) +]) + +dnl # +dnl # 5.8 API, +dnl # __vmalloc PAGE_KERNEL removal +dnl # +AC_DEFUN([ZFS_AC_KERNEL_SRC_VMALLOC_PAGE_KERNEL], [ + ZFS_LINUX_TEST_SRC([__vmalloc], [ + #include <linux/mm.h> + #include <linux/vmalloc.h> + ],[ + void *p __attribute__ ((unused)); + + p = __vmalloc(0, GFP_KERNEL, PAGE_KERNEL); + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_VMALLOC_PAGE_KERNEL], [ + AC_MSG_CHECKING([whether __vmalloc(ptr, flags, pageflags) is available]) + ZFS_LINUX_TEST_RESULT([__vmalloc], [ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_VMALLOC_PAGE_KERNEL, 1, [__vmalloc page flags exists]) + ],[ + AC_MSG_RESULT(no) + ]) +]) +-
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