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Retire legacy debugging infrastructure

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When the SPL was originally written Linux tracepoints were still
in their infancy.  Therefore, an entire debugging subsystem was
added to facilite tracing which served us well for many years.

Now that Linux tracepoints have matured they provide all the
functionality of the previous tracing subsystem.  Rather than
maintain parallel functionality it makes sense to fully adopt
tracepoints.  Therefore, this patch retires the legacy debugging
infrastructure.

See zfsonlinux/zfs@bc9f413 for the tracepoint changes.

Signed-off-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #408
This commit is contained in:
Brian Behlendorf
2014-11-05 17:30:35 -05:00
parent 917fef2732
commit 8d9a23e82c
26 changed files with 397 additions and 3008 deletions
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config/spl-build.m4
+1 -35
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@@ -18,7 +18,6 @@ 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_TEST_MODULE
@@ -219,7 +218,7 @@ AC_DEFUN([SPL_AC_RPM], [
AC_MSG_RESULT([$HAVE_RPMBUILD])
])
RPM_DEFINE_COMMON='--define "$(DEBUG_SPL) 1" --define "$(DEBUG_LOG) 1" --define "$(DEBUG_KMEM) 1" --define "$(DEBUG_KMEM_TRACKING) 1"'
RPM_DEFINE_COMMON='--define "$(DEBUG_SPL) 1" --define "$(DEBUG_KMEM) 1" --define "$(DEBUG_KMEM_TRACKING) 1"'
RPM_DEFINE_UTIL=
RPM_DEFINE_KMOD='--define "kernels $(LINUX_VERSION)"'
RPM_DEFINE_DKMS=
@@ -452,39 +451,6 @@ AC_DEFUN([SPL_AC_DEBUG], [
AC_MSG_RESULT([$enable_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$enable_debug_log" = xyes],
[
KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_LOG"
DEBUG_LOG="_with_debug_log"
AC_DEFINE([DEBUG_LOG], [1],
[Define to 1 to enable basic debug logging])
], [
DEBUG_LOG="_without_debug_log"
])
AC_SUBST(DEBUG_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.