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Enable objtool coverage for the sample ftrace modules by adding ELF
annotations to the asm trampoline functions.
samples/ftrace/ftrace-direct.o: warning: objtool: .text+0x0: unreachable instruction
samples/ftrace/ftrace-direct-modify.o: warning: objtool: .text+0x0: unreachable instruction
samples/ftrace/ftrace-direct-too.o: warning: objtool: .text+0x0: unreachable instruction
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
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There is a spelling mistake in a trace_printk message. As well as in
the selftests that search for this string.
Link: http://lkml.kernel.org/r/20191115085938.38947-1-colin.king@canonical.com
Link: http://lkml.kernel.org/r/20191115090356.39572-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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Add a sample module that shows a simple use case for
regsiter_ftrace_direct(), and how to use it.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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