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e1067a07cf
Adding ftrace-direct-multi-modify.ko kernel module that uses modify_ftrace_direct_multi API. The core functionality is taken from ftrace-direct-modify.ko kernel module and changed to fit multi direct interface. The init function creates kthread that periodically calls modify_ftrace_direct_multi to change the trampoline address for the direct ftrace_ops. The ftrace trace_pipe then shows trace from both trampolines. Link: https://lkml.kernel.org/r/20211206182032.87248-4-jolsa@kernel.org Cc: Ingo Molnar <mingo@redhat.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Tested-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
10 lines
451 B
Makefile
10 lines
451 B
Makefile
# SPDX-License-Identifier: GPL-2.0-only
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obj-$(CONFIG_SAMPLE_FTRACE_DIRECT) += ftrace-direct.o
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obj-$(CONFIG_SAMPLE_FTRACE_DIRECT) += ftrace-direct-too.o
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obj-$(CONFIG_SAMPLE_FTRACE_DIRECT) += ftrace-direct-modify.o
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obj-$(CONFIG_SAMPLE_FTRACE_DIRECT_MULTI) += ftrace-direct-multi.o
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obj-$(CONFIG_SAMPLE_FTRACE_DIRECT_MULTI) += ftrace-direct-multi-modify.o
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CFLAGS_sample-trace-array.o := -I$(src)
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obj-$(CONFIG_SAMPLE_TRACE_ARRAY) += sample-trace-array.o
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