4ef92c2ecd
Since tracefs will now hold the event directory for perf, and even though by default, debugfs still mounts tracefs on the debugfs/tracing directory, the system admin may now choose to not mount debugfs and instead just mount tracefs instead. Having tracefs helper functions will facilitate having perf look for tracefs first, and then try debugfs as a fallback. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20150202193552.898934751@goodmis.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
21 lines
445 B
C
21 lines
445 B
C
#ifndef __API_TRACEFS_H__
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#define __API_TRACEFS_H__
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#include "findfs.h"
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#ifndef TRACEFS_MAGIC
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#define TRACEFS_MAGIC 0x74726163
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#endif
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#ifndef PERF_TRACEFS_ENVIRONMENT
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#define PERF_TRACEFS_ENVIRONMENT "PERF_TRACEFS_DIR"
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#endif
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const char *tracefs_find_mountpoint(void);
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int tracefs_valid_mountpoint(const char *debugfs);
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char *tracefs_mount(const char *mountpoint);
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extern char tracefs_mountpoint[];
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#endif /* __API_DEBUGFS_H__ */
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