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selftests: use canonical ftrace path
The canonical location for the tracefs filesystem is at /sys/kernel/tracing. But, from Documentation/trace/ftrace.rst: Before 4.1, all ftrace tracing control files were within the debugfs file system, which is typically located at /sys/kernel/debug/tracing. For backward compatibility, when mounting the debugfs file system, the tracefs file system will be automatically mounted at: /sys/kernel/debug/tracing A few spots in tools/testing/selftests still refer to this older debugfs path, so let's update them to avoid confusion. Link: https://lkml.kernel.org/r/20230313211746.1541525-1-zwisler@kernel.org Cc: "Tobin C. Harding" <me@tobin.cc> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Tycho Andersen <tycho@tycho.pizza> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com> Signed-off-by: Ross Zwisler <zwisler@google.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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@ -98,7 +98,7 @@ int tracing_root_ok(void)
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void tracing_on(void)
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{
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#if CONTROL_TRACING > 0
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#define TRACEDIR "/sys/kernel/debug/tracing"
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#define TRACEDIR "/sys/kernel/tracing"
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char pidstr[32];
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if (!tracing_root_ok())
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@ -124,7 +124,7 @@ void tracing_off(void)
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#if CONTROL_TRACING > 0
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if (!tracing_root_ok())
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return;
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cat_into_file("0", "/sys/kernel/debug/tracing/tracing_on");
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cat_into_file("0", "/sys/kernel/tracing/tracing_on");
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#endif
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}
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@ -16,7 +16,7 @@
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#include "../kselftest_harness.h"
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const char *dyn_file = "/sys/kernel/debug/tracing/dynamic_events";
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const char *dyn_file = "/sys/kernel/tracing/dynamic_events";
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const char *clear = "!u:__test_event";
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static int Append(const char *value)
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@ -16,11 +16,11 @@
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#include "../kselftest_harness.h"
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const char *data_file = "/sys/kernel/debug/tracing/user_events_data";
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const char *status_file = "/sys/kernel/debug/tracing/user_events_status";
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const char *enable_file = "/sys/kernel/debug/tracing/events/user_events/__test_event/enable";
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const char *trace_file = "/sys/kernel/debug/tracing/trace";
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const char *fmt_file = "/sys/kernel/debug/tracing/events/user_events/__test_event/format";
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const char *data_file = "/sys/kernel/tracing/user_events_data";
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const char *status_file = "/sys/kernel/tracing/user_events_status";
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const char *enable_file = "/sys/kernel/tracing/events/user_events/__test_event/enable";
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const char *trace_file = "/sys/kernel/tracing/trace";
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const char *fmt_file = "/sys/kernel/tracing/events/user_events/__test_event/format";
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static inline int status_check(char *status_page, int status_bit)
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{
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@ -18,10 +18,10 @@
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#include "../kselftest_harness.h"
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const char *data_file = "/sys/kernel/debug/tracing/user_events_data";
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const char *status_file = "/sys/kernel/debug/tracing/user_events_status";
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const char *id_file = "/sys/kernel/debug/tracing/events/user_events/__test_event/id";
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const char *fmt_file = "/sys/kernel/debug/tracing/events/user_events/__test_event/format";
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const char *data_file = "/sys/kernel/tracing/user_events_data";
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const char *status_file = "/sys/kernel/tracing/user_events_status";
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const char *id_file = "/sys/kernel/tracing/events/user_events/__test_event/id";
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const char *fmt_file = "/sys/kernel/tracing/events/user_events/__test_event/format";
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struct event {
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__u32 index;
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