[RFC 3/5] valgrind: drop context API musl patch

[<Randy.MacLeod@windriver.com>]

From: Randy MacLeod <Randy.MacLeod@windriver.com>

Drop 002-context-APIs-are-not-available-on-musl.patch
since this is handled in a different way by the following
upstream commits:
   c9e88f345 configure, drd: Only build the swapcontext test if swapcontext() is available
   7cd4d7816 memcheck/tests/linux/stack_changes: Only run this test if setcontext() is available
And the that tracked the error:
   https://bugs.kde.org/show_bug.cgi?id=434775
is closed.

No regression in musl qemux86-64/kvm ptest resutls.:

Signed-off-by: Randy MacLeod <Randy.MacLeod@windriver.com>
---
 ...ntext-APIs-are-not-available-on-musl.patch | 92 -------------------
 .../valgrind/valgrind_3.22.0.bb               |  1 -
 2 files changed, 93 deletions(-)
 delete mode 100644 meta/recipes-devtools/valgrind/valgrind/0002-context-APIs-are-not-available-on-musl.patch

diff --git a/meta/recipes-devtools/valgrind/valgrind/0002-context-APIs-are-not-available-on-musl.patch b/meta/recipes-devtools/valgrind/valgrind/0002-context-APIs-are-not-available-on-musl.patch
deleted file mode 100644
index 7f0e38cb95..0000000000
--- a/meta/recipes-devtools/valgrind/valgrind/0002-context-APIs-are-not-available-on-musl.patch
+++ /dev/null
@@ -1,92 +0,0 @@
-From 26c104adf6c5162572b7aa2fac89d0835b7f8f0b Mon Sep 17 00:00:00 2001
-From: Randy MacLeod <Randy.MacLeod@windriver.com>
-Date: Tue, 16 Oct 2018 21:27:46 -0400
-Subject: [PATCH] context APIs are not available on musl
-
-Updated patch for valgrind-3.14
-
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
-Signed-off-by: Randy MacLeod <Randy.MacLeod@windriver.com>
-
-Apply same patch to drd/tests/swapcontext.c
-for valgrind-3.17.
-
-Upstream-Status: Submitted [https://bugs.kde.org/show_bug.cgi?id=434775]
-
-Signed-off-by: Yi Fan Yu <yifan.yu@windriver.com>
----
- drd/tests/swapcontext.c              | 6 ++++++
- memcheck/tests/linux/stack_changes.c | 7 ++++++-
- 2 files changed, 12 insertions(+), 1 deletion(-)
-
-diff --git a/drd/tests/swapcontext.c b/drd/tests/swapcontext.c
-index 622c70bc5..5e72bb0f3 100644
---- a/drd/tests/swapcontext.c
-+++ b/drd/tests/swapcontext.c
-@@ -20,6 +20,7 @@
- 
- #define STACKSIZE (PTHREAD_STACK_MIN + 4096)
- 
-+#ifdef __GLIBC__
- typedef struct thread_local {
-   ucontext_t uc[3];
-   size_t nrsw;
-@@ -67,9 +68,11 @@ void *worker(void *data)
-   swapcontext(&tlocal->uc[0], &tlocal->uc[1]);
-   return NULL;
- }
-+#endif
- 
- int main(int argc, char *argv[])
- {
-+#ifdef __GLIBC__
-   enum { NR = 32 };
-   thread_local_t tlocal[NR];
-   pthread_t thread[NR];
-@@ -94,6 +97,9 @@ int main(int argc, char *argv[])
- 
-   for (i = 0; i < NR; i++)
-     pthread_join(thread[i], NULL);
-+#else
-+    printf("libc context call APIs e.g. getcontext() are deprecated by posix\n");
-+#endif
- 
-   return 0;
- }
-diff --git a/memcheck/tests/linux/stack_changes.c b/memcheck/tests/linux/stack_changes.c
-index 7f97b90a5..a26cb4ae6 100644
---- a/memcheck/tests/linux/stack_changes.c
-+++ b/memcheck/tests/linux/stack_changes.c
-@@ -10,6 +10,7 @@
- // This test is checking the libc context calls (setcontext, etc.) and
- // checks that Valgrind notices their stack changes properly.
- 
-+#ifdef __GLIBC__
- typedef  ucontext_t  mycontext;
- 
- mycontext ctx1, ctx2, oldc;
-@@ -51,9 +52,11 @@ int init_context(mycontext *uc)
- 
-     return ret;
- }
-+#endif
- 
- int main(int argc, char **argv)
- {
-+#ifdef __GLIBC__
-     int c1 = init_context(&ctx1);
-     int c2 = init_context(&ctx2);
- 
-@@ -66,6 +69,8 @@ int main(int argc, char **argv)
-     //free(ctx1.uc_stack.ss_sp);
-     VALGRIND_STACK_DEREGISTER(c2);
-     //free(ctx2.uc_stack.ss_sp);
--
-+#else
-+    printf("libc context call APIs e.g. getcontext() are deprecated by posix\n");
-+#endif
-     return 0;
- }
--- 
-2.17.1
-
diff --git a/meta/recipes-devtools/valgrind/valgrind_3.22.0.bb b/meta/recipes-devtools/valgrind/valgrind_3.22.0.bb
index 6dcd028075..0ebf08eb28 100644
--- a/meta/recipes-devtools/valgrind/valgrind_3.22.0.bb
+++ b/meta/recipes-devtools/valgrind/valgrind_3.22.0.bb
@@ -25,7 +25,6 @@ SRC_URI = "https://sourceware.org/pub/valgrind/valgrind-${PV}.tar.bz2 \
            file://valgrind-make-ld-XXX.so-strlen-intercept-optional.patch \
            file://0001-makefiles-Drop-setting-mcpu-to-cortex-a8-on-arm-arch.patch \
            file://0001-sigqueue-Rename-_sifields-to-__si_fields-on-musl.patch \
-           file://0002-context-APIs-are-not-available-on-musl.patch \
            file://0003-correct-include-directive-path-for-config.h.patch \
            file://0001-fix-opcode-not-supported-on-mips32-linux.patch \
            file://0001-Make-local-functions-static-to-avoid-assembler-error.patch \
-- 
2.42.0