Python scripting can be used without libtraceevent. In particular, scripting for Intel PT does not use tracepoints, and so does not need libtraceevent support. Alter the build and employ conditional compilation to allow Python scripting without libtraceevent. Example: Before: $ ldd `which perf` | grep -i python $ ldd `which perf` | grep -i libtraceevent $ perf record -e intel_pt//u uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.031 MB perf.data ] $ perf script intel-pt-events.py |& head -3 Error: Couldn't find script `intel-pt-events.py' See perf script -l for available scripts. After: $ ldd `which perf` | grep -i python libpython3.10.so.1.0 => /lib/x86_64-linux-gnu/libpython3.10.so.1.0 (0x00007f4bac400000) $ ldd `which perf` | grep -i libtraceevent $ perf script intel-pt-events.py | head Intel PT Branch Trace, Power Events, Event Trace and PTWRITE Switch In 8021/8021 [000] 11234.097713404 0/0 perf-exec 8021/8021 [000] 11234.098041726 psb offset: 0x0 0 [unknown] ([unknown]) perf-exec 8021/8021 [000] 11234.098041726 cbr 45 freq: 4505 MHz (161%) 0 [unknown] ([unknown]) uname 8021/8021 [000] 11234.098082170 branches:uH tr strt 0 [unknown] ([unknown]) => 7f3a8b9422b0 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) uname 8021/8021 [000] 11234.098082379 branches:uH tr end 7f3a8b9422b0 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) => 0 [unknown] ([unknown]) uname 8021/8021 [000] 11234.098083629 branches:uH tr strt 0 [unknown] ([unknown]) => 7f3a8b9422b0 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) uname 8021/8021 [000] 11234.098083629 branches:uH call 7f3a8b9422b3 _start+0x3 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) => 7f3a8b943050 _dl_start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) uname 8021/8021 [000] 11234.098083837 branches:uH tr end 7f3a8b943060 _dl_start+0x10 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) => 0 [unknown] ([unknown]) IPC: 0.01 (9/938) uname 8021/8021 [000] 11234.098084670 branches:uH tr strt 0 [unknown] ([unknown]) => 7f3a8b943060 _dl_start+0x10 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2)
Showing the changes to tools/perf/scripts/python (2 of 9 files). Show all
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| @@ -1,3 +1,3 @@ | ||
| 1 | −perf-$(CONFIG_LIBTRACEEVENT) += Context.o | |
| 1 | +perf-y += Context.o | |
| 2 | 2 | |
| 3 | 3 | CFLAGS_Context.o += $(PYTHON_EMBED_CCOPTS) -Wno-redundant-decls -Wno-strict-prototypes -Wno-unused-parameter -Wno-nested-externs |
| @@ -59,6 +59,7 @@ static struct scripting_context *get_scripting_context(PyObject *args) · 58 unmodified lines | ||
| 59 | 59 | return get_args(args, "context", NULL); |
| 60 | 60 | } |
| 61 | 61 | |
| 62 | +#ifdef HAVE_LIBTRACEEVENT | |
| 62 | 63 | static PyObject *perf_trace_context_common_pc(PyObject *obj, PyObject *args) |
| 63 | 64 | { |
| 64 | 65 | struct scripting_context *c = get_scripting_context(args); |
| @@ -90,6 +91,7 @@ static PyObject *perf_trace_context_common_lock_depth(PyObject *obj, · 25 unmodified lines | ||
| 90 | 91 | |
| 91 | 92 | return Py_BuildValue("i", common_lock_depth(c)); |
| 92 | 93 | } |
| 94 | +#endif | |
| 93 | 95 | |
| 94 | 96 | static PyObject *perf_sample_insn(PyObject *obj, PyObject *args) |
| 95 | 97 | { |
| @@ -178,12 +180,14 @@ static PyObject *perf_sample_srccode(PyObject *obj, PyObject *args) · 82 unmodified lines | ||
| 178 | 180 | } |
| 179 | 181 | |
| 180 | 182 | static PyMethodDef ContextMethods[] = { |
| 183 | +#ifdef HAVE_LIBTRACEEVENT | |
| 181 | 184 | { "common_pc", perf_trace_context_common_pc, METH_VARARGS, |
| 182 | 185 | "Get the common preempt count event field value."}, |
| 183 | 186 | { "common_flags", perf_trace_context_common_flags, METH_VARARGS, |
| 184 | 187 | "Get the common flags event field value."}, |
| 185 | 188 | { "common_lock_depth", perf_trace_context_common_lock_depth, |
| 186 | 189 | METH_VARARGS, "Get the common lock depth event field value."}, |
| 190 | +#endif | |
| 187 | 191 | { "perf_sample_insn", perf_sample_insn, |
| 188 | 192 | METH_VARARGS, "Get the machine code instruction."}, |
| 189 | 193 | { "perf_set_itrace_options", perf_set_itrace_options, |