Heiko Carstens e6d60b368b s390/ftrace: hotpatch support for function tracing ... Make use of gcc's hotpatch support to generate better code for ftrace function tracing. The generated code now contains only a six byte nop in each function prologue instead of a 24 byte code block which will be runtime patched to support function tracing. With the new code generation the runtime overhead for supporting function tracing is close to zero, while the original code did show a significant performance impact. Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2015-01-29 09:19:25 +01:00
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asm	s390/ftrace: hotpatch support for function tracing	2015-01-29 09:19:25 +01:00
uapi/asm	s390: wire up execveat syscall	2014-12-18 13:37:17 +01:00