108fc82596
This patch adds a user tool, "trace agent" for sending trace data of a guest to a Host in low overhead. This agent has the following functions: - splice a page of ring-buffer to read_pipe without memory copying - splice the page from write_pipe to virtio-console without memory copying - write trace data to stdout by using -o option - controlled by start/stop orders from a Host Changes in v2: - Cleanup (change fprintf() to pr_err() and an include guard) Signed-off-by: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Acked-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 lines
238 B
Makefile
15 lines
238 B
Makefile
CC = gcc
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CFLAGS = -O2 -Wall
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LFLAG = -lpthread
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all: trace-agent
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.c.o:
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$(CC) $(CFLAGS) $(LFLAG) -c $^ -o $@
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trace-agent: trace-agent.o trace-agent-ctl.o trace-agent-rw.o
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$(CC) $(CFLAGS) $(LFLAG) -o $@ $^
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clean:
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rm -f *.o trace-agent
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