From: Peter Korsgaard <jacmet@sunsite.dk>
Date: Thu, 26 Apr 2012 21:07:47 +0000 (-0400)
Subject: Fix: getcpu build with modern uClibc versions
X-Git-Tag: v2.1.0-rc1~90
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=6d940e0f88f76cd19717c3421929de05a7c8ac94;p=lttng-ust.git

Fix: getcpu build with modern uClibc versions

uClibc has sched_getcpu since 0.9.33, so the compat workaround should
only be used for older uClibc versions.

Fixes #225

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/libringbuffer/getcpu.h b/libringbuffer/getcpu.h
index 0a619417..dbc186c1 100644
--- a/libringbuffer/getcpu.h
+++ b/libringbuffer/getcpu.h
@@ -41,7 +41,10 @@ int lttng_ust_get_cpu(void)
  */
 #ifdef __linux__
 
-#ifdef __UCLIBC__
+/* old uClibc versions didn't have sched_getcpu */
+#if defined(__UCLIBC__) && __UCLIBC_MAJOR__ == 0 && \
+	(__UCLIBC_MINOR__ < 9 || \
+	 (__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ <= 32))
 #include <sys/syscall.h>
 #define __getcpu(cpu, node, cache)	syscall(__NR_getcpu, cpu, node, cache)
 /*