ltp: Replace musl patches with do_patch[postfuncs]

MUSL related build fixes are not going to be upstreamed.  They just not
compile broken files, thus replace them with upstream solution for CI:
just deleting files for musl (easier to maintain).

(From OE-Core rev: c781677fd5f4e15bde17114468d9f66ba5dc38a2)

Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/ltp/ltp/0001-Add-more-musl-exclusions.patch

@@ -1,32 +0,0 @@
-From ad8e73306cb8293f7d32841e1599fd9048801f1f Mon Sep 17 00:00:00 2001
-From: Alexander Kanavin <alex.kanavin@gmail.com>
-Date: Fri, 20 Dec 2019 13:06:05 +0100
-Subject: [PATCH] Add more musl exclusions
-
-Upstream-Status: Pending
-Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
-[ pvorel: rebase for 20200515: enable accept4_01 ]
-[ pvorel: rebase for 20200120: enable fanotify13, fanotify15, setxattr03 ]
-Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
----
- testcases/kernel/syscalls/timer_create/Makefile | 4 ++++
- 1 file changed, 4 insertions(+)
-
-diff --git a/testcases/kernel/syscalls/timer_create/Makefile b/testcases/kernel/syscalls/timer_create/Makefile
-index ada241fe1..d454b01e7 100644
---- a/testcases/kernel/syscalls/timer_create/Makefile
-+++ b/testcases/kernel/syscalls/timer_create/Makefile
-@@ -5,6 +5,10 @@ top_srcdir		?= ../../../..
- 
- include $(top_srcdir)/include/mk/testcases.mk
- 
-+ifeq ($(LIBC),musl)
-+FILTER_OUT_MAKE_TARGETS        := timer_create01 timer_create03
-+endif
-+
- CPPFLAGS		+= -D_GNU_SOURCE -I$(abs_srcdir)/../include
- 
- LDLIBS			+= -lpthread -lrt
--- 
-2.26.2
-

meta/recipes-extended/ltp/ltp/0001-build-Add-option-to-select-libc-implementation.patch

@@ -1,81 +0,0 @@
-From 74958c3e341de713b596c8cfd35b2391d6c7bc09 Mon Sep 17 00:00:00 2001
-From: Khem Raj <raj.khem@gmail.com>
-Date: Thu, 7 Jan 2016 18:19:03 +0000
-Subject: [PATCH] build: Add option to select libc implementation
-
-There are more than glibc for C library implementation available on
-linux now a days, uclibc cloaked like glibc but musl e.g. is very
-different and does not implement all GNU extensions.
-
-Disable tests specifically not building _yet_ on musl based systems
-
-Upstream-Status: Pending (pvorel: this is not going to be fixed, instead
-each test needs to be fixed)
-
-rt_tgsigqueueinfo fails with:
-rt_tgsigqueueinfo01.c: In function 'sigusr1_handler':
-rt_tgsigqueueinfo01.c:42:22: error: 'siginfo_t' {aka 'struct <anonymous>'} has no member named '_sifields'; did you mean '__si_fields'?
-   42 |  sigval_rcv = uinfo->_sifields._rt.SI_SIGVAL.sival_ptr;
-      |                      ^~~~~~~~~
-      |                      __si_fields
-
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
-[ pvorel: rebase for 20200515: enable pty, ioctl ]
-[ pvorel: rebase for 20200120: enable mallopt, profil, rpc016,
-rt_sigsuspend, sbrk_mutex, setdomainname, sethostname, sigsuspend,
-testpi-3, testpi-5, testpi-6, ustat; move rt_tgsigqueueinfo
-from 0006-rt_tgsigqueueinfo-disable-test-on-musl.patch ]
-Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
----
- Makefile                           | 5 +++++
- testcases/kernel/sched/Makefile    | 4 +++-
- testcases/kernel/syscalls/Makefile | 4 ++++
- 3 files changed, 12 insertions(+), 1 deletion(-)
-
-diff --git a/Makefile b/Makefile
-index 768ca4606..e9d679a71 100644
---- a/Makefile
-+++ b/Makefile
-@@ -41,6 +41,11 @@ vpath %.mk		$(top_srcdir)/mk:$(top_srcdir)/mk/include
- UCLINUX			?= 0
- export UCLINUX
- 
-+# System C library implementation (glibc,uclibc,musl etc.)
-+# default to glibc if not set
-+LIBC			?= glibc
-+export LIBC
-+
- # CLEAN_TARGETS:	Targets which exist solely in clean.
- # COMMON_TARGETS:	Targets which exist in all, clean, and install.
- # INSTALL_TARGETS:	Targets which exist in clean and install (contains
-diff --git a/testcases/kernel/sched/Makefile b/testcases/kernel/sched/Makefile
-index 6a57d79ee..74bb93370 100644
---- a/testcases/kernel/sched/Makefile
-+++ b/testcases/kernel/sched/Makefile
-@@ -23,5 +23,7 @@
- top_srcdir		?= ../../..
- 
- include $(top_srcdir)/include/mk/env_pre.mk
--
-+ifeq ($(LIBC),musl)
-+	FILTER_OUT_DIRS += process_stress
-+endif
- include $(top_srcdir)/include/mk/generic_trunk_target.mk
-diff --git a/testcases/kernel/syscalls/Makefile b/testcases/kernel/syscalls/Makefile
-index c6dc8d9e7..aa50761ea 100644
---- a/testcases/kernel/syscalls/Makefile
-+++ b/testcases/kernel/syscalls/Makefile
-@@ -15,6 +15,10 @@ FILTER_OUT_DIRS	+= capget capset chmod chown clone fork getcontext llseek \
- 		   mincore mprotect nftw profil remap_file_pages sbrk
- endif
- 
-+ifeq ($(LIBC),musl)
-+FILTER_OUT_DIRS	+= confstr fmtmsg getcontext rt_tgsigqueueinfo
-+endif
-+
- ifeq ($(UCLIBC),1)
- FILTER_OUT_DIRS	+= profil
- endif
--- 
-2.26.2
-

meta/recipes-extended/ltp/ltp_20210121.bb

@@ -34,9 +34,7 @@ PR = "r4"
 HASHEQUIV_HASH_VERSION .= ".4"
 
 SRC_URI = "git://github.com/linux-test-project/ltp.git \
-           file://0001-build-Add-option-to-select-libc-implementation.patch \
            file://0007-Fix-test_proc_kill-hanging.patch \
-           file://0001-Add-more-musl-exclusions.patch \
            file://0001-Remove-OOM-tests-from-runtest-mm.patch \
            file://determinism.patch \
            file://0001-open_posix_testsuite-generate-makefiles.sh-Avoid-inc.patch \
@@ -121,6 +119,26 @@ FILES_${PN} += "${prefix}/* ${prefix}/runtest/* ${prefix}/scenario_groups/* ${pr
 INHIBIT_PACKAGE_STRIP_FILES = "${prefix}/testcases/bin/nm01 ${prefix}/testcases/bin/ldd01"
 INSANE_SKIP_${PN} += "already-stripped staticdev"
 
+remove_broken_musl_sources() {
+	[ "${TCLIBC}" = "musl" ] || return 0
+
+	cd ${S}
+	echo "WARNING: remove unsupported tests (until they're fixed)"
+
+	# sync with upstream
+	# https://github.com/linux-test-project/ltp/blob/master/travis/alpine.sh#L33
+	rm -rfv \
+		testcases/kernel/sched/process_stress/process.c \
+		testcases/kernel/syscalls/confstr/confstr01.c \
+		testcases/kernel/syscalls/fmtmsg/fmtmsg01.c \
+		testcases/kernel/syscalls/getcontext/getcontext01.c \
+		testcases/kernel/syscalls/rt_tgsigqueueinfo/rt_tgsigqueueinfo01.c \
+		testcases/kernel/syscalls/timer_create/timer_create01.c \
+		testcases/kernel/syscalls/timer_create/timer_create03.c \
+		utils/benchmark/ebizzy-0.3
+}
+do_patch[postfuncs] += "remove_broken_musl_sources"
+
 # Avoid file dependency scans, as LTP checks for things that may or may not
 # exist on the running system.  For instance it has specific checks for
 # csh and ksh which are not typically part of OpenEmbedded systems (but