Daniel P. Berrange 8ed5372874 trace: don't abort qemu if ftrace can't be initialized ... If the ftrace backend is compiled into QEMU, any attempt to start QEMU while non-root will fail due to the inability to open /sys/kernel/debug/tracing/tracing_on. Add a fallback into the code so that it connects up the trace_marker_fd variable to /dev/null when getting EACCES on the 'trace_on' file. This allows QEMU to run, with ftrace turned into a no-op. [Fixed s/setting/getting/ and s/EACCESS/EACCES/ errors pointed out by Eric Blake <eblake@redhat.com>. --Stefan] Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1475588159-30598-13-git-send-email-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>		2016-10-12 09:35:54 +02:00
..
control-internal.h	trace: remove the TraceEventID and TraceEventVCPUID enums	2016-10-12 09:35:54 +02:00
control-target.c	trace: remove the TraceEventID and TraceEventVCPUID enums	2016-10-12 09:35:54 +02:00
control.c	trace: remove the TraceEventID and TraceEventVCPUID enums	2016-10-12 09:35:54 +02:00
control.h	trace: remove the TraceEventID and TraceEventVCPUID enums	2016-10-12 09:35:54 +02:00
event-internal.h	trace: remove the TraceEventID and TraceEventVCPUID enums	2016-10-12 09:35:54 +02:00
ftrace.c	trace: don't abort qemu if ftrace can't be initialized	2016-10-12 09:35:54 +02:00
ftrace.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
Makefile.objs	rules.mak: quiet-command: Split command name and args to print	2016-10-06 12:11:51 +01:00
mem-internal.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
mem.h	Clean up decorations and whitespace around header guards	2016-07-12 16:20:46 +02:00
qmp.c	trace: convert code to use event iterators	2016-10-12 09:35:54 +02:00
simple.c	trace: emit name <-> ID mapping in simpletrace header	2016-10-12 09:35:54 +02:00
simple.h	trace: remove the TraceEventID and TraceEventVCPUID enums	2016-10-12 09:35:54 +02:00