systemtap: 3.3 -> 4.0

Upgrade systemtap from 3.3 to 4.0: Removed backported patch.

Very short summary of major changes from SystemTap 4.0
announcement by Frank Ch. Eigler <fche@redhat.com>:

> prometheus exporter network service; ebpf support extensions including
> strings and implementation of traditional log(), sprintf() functions;
> rebuilt rich tapset coverage for 4.17+ syscalls and for
> tracepoint-based syscalls; script language tweaks for supporting
> machine-generated scripts

Fixes [YOCTO #12950]

Signed-off-by: Victor Kamensky <kamensky@cisco.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 2 insertions, 49 deletions

diff --git a/meta/recipes-kernel/systemtap/systemtap/0001-dwflpp-function_entrypc-avoid-usage-of-uninitialized.patch b/meta/recipes-kernel/systemtap/systemtap/0001-dwflpp-function_entrypc-avoid-usage-of-uninitialized.patch
deleted file mode 100644
index d0082a1094..0000000000
--- a/meta/recipes-kernel/systemtap/systemtap/0001-dwflpp-function_entrypc-avoid-usage-of-uninitialized.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-From 8466fca2a074323a235ef38d425f994a2ff7e64f Mon Sep 17 00:00:00 2001
-From: Victor Kamensky <kamensky@cisco.com>
-Date: Mon, 9 Jul 2018 09:31:19 -0700
-Subject: [PATCH] dwflpp::function_entrypc avoid usage of uninitialized memory
-
-Failure on 3.3 release was observed. Failure was elusive and
-disappeared after seemingly random configure option change, or when
-code was compiled with -O1 or -O0 (vs default -O2). Running failing
-test case under valgrind memcheck pointed to couple places where
-'Conditional jump or move depends on uninitialised value(s)' occured.
-
-After addressing these in two places in dwflpp::function_entrypc,
-valgrind memcheck run is clean and original issue got fixed.
-
-Upstream-Status: Backport
-Signed-off-by: Victor Kamensky <kamensky@cisco.com>
----
- dwflpp.cxx | 6 +++++-
- 1 file changed, 5 insertions(+), 1 deletion(-)
-
-diff --git a/dwflpp.cxx b/dwflpp.cxx
-index bfbb6b096..2172e705a 100644
---- a/dwflpp.cxx
-+++ b/dwflpp.cxx
-@@ -2465,13 +2465,17 @@ bool
- dwflpp::function_entrypc (Dwarf_Addr * addr)
- {
-   assert (function);
-+
-+  // assign default value
-+  *addr = 0;
-+
-   // PR10574: reject 0, which tends to be eliminated COMDAT
-   if (dwarf_entrypc (function, addr) == 0 && *addr != 0)
-     return true;
- 
-   /* Assume the entry pc is the base address, or (if zero)
-      the first address of the ranges covering this DIE.  */
--  Dwarf_Addr start, end;
-+  Dwarf_Addr start = 0, end;
-   if (dwarf_ranges (function, 0, addr, &start, &end) >= 0)
-     {
-       if (*addr == 0)
--- 
-2.17.1
-
diff --git a/meta/recipes-kernel/systemtap/systemtap_git.inc b/meta/recipes-kernel/systemtap/systemtap_git.inc
index 06924fc240..274fcde5c1 100644
--- a/meta/recipes-kernel/systemtap/systemtap_git.inc
+++ b/meta/recipes-kernel/systemtap/systemtap_git.inc
@@ -1,7 +1,7 @@
 LICENSE = "GPLv2"
 LIC_FILES_CHKSUM = "file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263"
-SRCREV = "48867d1cface9445d58e3c6e14497770b7eb77e1"
-PV = "3.3"
+SRCREV = "428f84e9e656bce71018e8902e4edb8aacafcc0e"
+PV = "4.0"
 
 SRC_URI = "git://sourceware.org/git/systemtap.git \
            file://configure-allow-to-disable-libvirt.patch \
@@ -11,7 +11,6 @@ SRC_URI = "git://sourceware.org/git/systemtap.git \
            file://0001-Do-not-let-configure-write-a-python-location-into-th.patch \
            file://0001-Install-python-modules-to-correct-library-dir.patch \
            file://0001-staprun-stapbpf-don-t-support-installing-a-non-root.patch \
-           file://0001-dwflpp-function_entrypc-avoid-usage-of-uninitialized.patch \
            "
 
 COMPATIBLE_HOST = '(x86_64|i.86|powerpc|arm|aarch64|microblazeel|mips).*-linux'