Steven Rostedt (Red Hat) 098c879e1f
tracing: Add generic tracing_lseek() function ...
Trace event triggers added a lseek that uses the ftrace_filter_lseek()
function. Unfortunately, when function tracing is not configured in
that function is not defined and the kernel fails to build.
This is the second time that function was added to a file ops and
it broke the build due to requiring special config dependencies.
Make a generic tracing_lseek() that all the tracing utilities may
use.
Also, modify the old ftrace_filter_lseek() to return 0 instead of
1 on WRONLY. Not sure why it was a 1 as that does not make sense.
This also changes the old tracing_seek() to modify the file pos
pointer on WRONLY as well.
Reported-by: kbuild test robot <fengguang.wu@intel.com >
Tested-by: Tom Zanussi <tom.zanussi@linux.intel.com >
Acked-by: Tom Zanussi <tom.zanussi@linux.intel.com >
Signed-off-by: Steven Rostedt <rostedt@goodmis.org >
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098c879e1f