File ck-fix-gettid-glibc-clash.patch of Package ck

From b520d58d00b7ed6c5cc9bc97c62f07e09f4f49ad Mon Sep 17 00:00:00 2001
From: Samy Al Bahra <sbahra@backtrace.io>
Date: Tue, 29 Oct 2019 17:30:09 -0400
Subject: [PATCH] regressions/common: rename gettid wrapper to common_gettid.

glibc-2.30 added a wrapper to gettid (https://lwn.net/Articles/795127/).
gettid will clash with the glibc-provided symbol. Remove the
macro and instead move to a dedicated namespace.

We go this route to avoid introducing unnecessary complexity to
build.

Fixes #147
---
 regressions/common.h | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/regressions/common.h b/regressions/common.h
index 6e53483d..9cdc690a 100644
--- a/regressions/common.h
+++ b/regressions/common.h
@@ -267,13 +267,11 @@ struct affinity {
 #define AFFINITY_INITIALIZER {0, 0}
 
 #ifdef __linux__
-#ifndef gettid
 static pid_t
-gettid(void)
+common_gettid(void)
 {
 	return syscall(__NR_gettid);
 }
-#endif /* gettid */
 
 CK_CC_UNUSED static int
 aff_iterate(struct affinity *acb)
@@ -285,7 +283,7 @@ aff_iterate(struct affinity *acb)
 	CPU_ZERO(&s);
 	CPU_SET(c % CORES, &s);
 
-	return sched_setaffinity(gettid(), sizeof(s), &s);
+	return sched_setaffinity(common_gettid(), sizeof(s), &s);
 }
 
 CK_CC_UNUSED static int
@@ -297,7 +295,7 @@ aff_iterate_core(struct affinity *acb, unsigned int *core)
 	CPU_ZERO(&s);
 	CPU_SET((*core) % CORES, &s);
 
-	return sched_setaffinity(gettid(), sizeof(s), &s);
+	return sched_setaffinity(common_gettid(), sizeof(s), &s);
 }
 #elif defined(__MACH__)
 CK_CC_UNUSED static int