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tools lib traceevent: Provide le16toh define for older systems

tip:perf/core tip-bot for Arnaldo Carvalho de Melo 1 participant 1 message May 15, 2015

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Commit-ID:  b390d850607346162467bf1805a365e07de7c079
Gitweb:     http://git.kernel.org/tip/b390d850607346162467bf1805a365e07de7c079
Author:     Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Thu, 14 May 2015 12:28:11 -0300
Committer:  Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Thu, 14 May 2015 12:28:11 -0300

tools lib traceevent: Provide le16toh define for older systems

Where such macro is not present, so just copy its definition from glibc's endian.h and define it if not already.

Cc Adrian Hunter <[email protected]>
Cc Borislav Petkov <[email protected]>
Cc David Ahern <[email protected]>
Cc Don Zickus <[email protected]>
Cc Frederic Weisbecker <[email protected]>
Cc Jiri Olsa <[email protected]>
Cc Namhyung Kim <[email protected]>
Cc Stephane Eranian <[email protected]>
Cc Steven Rostedt <[email protected]>
Link http://lkml.kernel.org/n/[email protected] open here
Signed-off-by Arnaldo Carvalho de Melo <[email protected]>
---
 tools/lib/traceevent/plugin_cfg80211.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
tools/lib/traceevent/plugin_cfg80211.c +13 -0
index 4592d84..ec57d0c 100644
@@ -4,6 +4,19 @@
 #include <endian.h>
 #include "event-parse.h"
 
+/*
+ * From glibc endian.h, for older systems where it is not present, e.g.: RHEL5,
+ * Fedora6.
+ */
+#ifndef le16toh
+# if __BYTE_ORDER == __LITTLE_ENDIAN
+#  define le16toh(x) (x)
+# else
+#  define le16toh(x) __bswap_16 (x)
+# endif
+#endif
+
+
 static unsigned long long
 process___le16_to_cpup(struct trace_seq *s, unsigned long long *args)
 {