- revise the systemtap patch (patch 55:python-2.6.4-dtrace.patch) to the
new version by mjw in attachment 390110 of rhbz:545179, as this should
eliminate the performance penalty for the case where the probes aren't
in use, and eliminate all architecture-specific code (rhbz:563541;
except on sparc)
This commit is contained in:
dmalcolm
parent
3dde1c9650
commit
bdbb341f6f
|
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@ -17,7 +17,7 @@ diff -up Python-2.6.4/configure.in.systemtap Python-2.6.4/configure.in
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+ AC_DEFINE(WITH_DTRACE, 1,
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+ [Define if you want to compile in Dtrace support])
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+ with_dtrace="Sun"
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+ DTRACEOBJS="Python/phelper.o Python/dtrace.o"
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+ DTRACEOBJS="Python/dtrace.o"
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+ DTRADEHDRS=""
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+ elif dtrace -h -o /dev/null -s $srcdir/Include/pydtrace.d
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+ then
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@ -25,7 +25,7 @@ diff -up Python-2.6.4/configure.in.systemtap Python-2.6.4/configure.in
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+ [Define if you want to compile in Dtrace support])
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+ with_dtrace="Apple"
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+ DTRACEOBJS=""
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+ DTRADEHDRS="phelper.h pydtrace.h"
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+ DTRADEHDRS="pydtrace.h"
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+ else
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+ with_dtrace="no"
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+ fi
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@ -40,162 +40,6 @@ diff -up Python-2.6.4/configure.in.systemtap Python-2.6.4/configure.in
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# Check for --with-wctype-functions
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AC_MSG_CHECKING(for --with-wctype-functions)
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AC_ARG_WITH(wctype-functions,
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diff -up Python-2.6.4/Include/frameobject.h.systemtap Python-2.6.4/Include/frameobject.h
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--- Python-2.6.4/Include/frameobject.h.systemtap 2008-02-14 07:47:33.000000000 -0500
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+++ Python-2.6.4/Include/frameobject.h 2009-12-18 15:37:15.714243772 -0500
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@@ -41,6 +41,9 @@ typedef struct _frame {
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/* As of 2.3 f_lineno is only valid when tracing is active (i.e. when
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f_trace is set) -- at other times use PyCode_Addr2Line instead. */
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int f_lineno; /* Current line number */
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+#ifdef WITH_DTRACE
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+ int f_calllineno; /* line number of call site */
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+#endif
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int f_iblock; /* index in f_blockstack */
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PyTryBlock f_blockstack[CO_MAXBLOCKS]; /* for try and loop blocks */
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PyObject *f_localsplus[1]; /* locals+stack, dynamically sized */
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diff -up Python-2.6.4/Include/phelper.d.systemtap Python-2.6.4/Include/phelper.d
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--- Python-2.6.4/Include/phelper.d.systemtap 2009-12-18 15:37:15.698243410 -0500
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+++ Python-2.6.4/Include/phelper.d 2009-12-18 15:37:15.697243772 -0500
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@@ -0,0 +1,139 @@
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+
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+/*
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+ * Python ustack helper. This relies on the first argument (PyFrame *) being
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+ * on the stack; see Python/ceval.c for the contortions we go through to ensure
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+ * this is the case.
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+ *
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+ * On x86, the PyFrame * is two slots up from the frame pointer; on SPARC, it's
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+ * eight.
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+ */
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+
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+/*
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+ * Yes, this is as gross as it looks. DTrace cannot handle static functions,
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+ * and our stat_impl.h has them in ILP32.
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+ */
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+#define _SYS_STAT_H
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+
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+#include <stdio.h>
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+#include <sys/types.h>
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+
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+#include "pyport.h"
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+#include "object.h"
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+#include "pystate.h"
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+#include "pyarena.h"
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+#include "pythonrun.h"
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+#include "compile.h"
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+#include "frameobject.h"
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+#include "stringobject.h"
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+
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+#if defined(__i386)
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+#define startframe PyEval_EvalFrameEx
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+#define endframe PyEval_EvalCodeEx
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+#elif defined(__amd64)
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+#define PyEval_EvalFrameEx PyEval_EvalFrameExReal
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+#define startframe PyEval_EvalFrameExReal
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+#define endframe PyEval_EvalCodeEx
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+#elif defined(__sparc)
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+#define PyEval_EvalFrameEx PyEval_EvalFrameExReal
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+#define startframe PyEval_EvalFrameEx
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+#define endframe PyEval_EvalFrameExReal
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+#endif
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+
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+#ifdef __sparcv9
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+#define STACK_BIAS (2048-1)
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+#else
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+#define STACK_BIAS 0
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+#endif
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+
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+/*
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+ * Not defining PHELPER lets us test this code as a normal D script.
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+ */
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+#ifdef PHELPER
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+
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+#define at_evalframe(addr) \
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+ ((uintptr_t)addr >= ((uintptr_t)&``startframe) && \
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+ (uintptr_t)addr < ((uintptr_t)&``endframe))
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+#define probe dtrace:helper:ustack:
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+#define print_result(r) (r)
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+
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+#if defined(__i386) || defined(__amd64)
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+#define frame_ptr_addr ((uintptr_t)arg1 + sizeof(uintptr_t) * 2)
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+#elif defined(__sparc)
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+#define frame_ptr_addr ((uintptr_t)arg1 + STACK_BIAS + sizeof(uintptr_t) * 8)
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+#else
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+#error unknown architecture
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+#endif
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+
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+#else /* PHELPER */
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+
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+#define at_evalframe(addr) (1)
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+#define probe pid$target::PyEval_EvalFrame:entry
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+#define print_result(r) (trace(r))
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+
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+#if defined(__i386) || defined(__amd64)
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+#define frame_ptr_addr ((uintptr_t)uregs[R_SP] + sizeof(uintptr_t))
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+#elif defined(__sparc)
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+/*
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+ * Not implemented: we could just use R_I0, but what's the point?
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+ */
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+#else
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+#error unknown architecture
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+#endif
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+
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+#endif /* PHELPER */
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+
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+extern uintptr_t PyEval_EvalFrameEx;
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+extern uintptr_t PyEval_EvalCodeEx;
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+
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+#define copyin_obj(addr, obj) ((obj *)copyin((uintptr_t)addr, sizeof(obj)))
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+#define pystr_addr(addr) ((char *)addr + offsetof(PyStringObject, ob_sval))
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+#define copyin_str(dest, addr, obj) \
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+ (copyinto((uintptr_t)pystr_addr(addr), obj->ob_size, (dest)))
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+#define add_str(addr, obj) \
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+ copyin_str(this->result + this->pos, addr, obj); \
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+ this->pos += obj->ob_size; \
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+ this->result[this->pos] = '\0';
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+#define add_digit(nr, div) ((nr / div) ? \
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+ (this->result[this->pos++] = '0' + ((nr / div) % 10)) : \
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+ (this->result[this->pos] = '\0'))
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+#define add_char(c) (this->result[this->pos++] = c)
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+
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+probe /at_evalframe(arg0)/
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+{
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+ this->framep = *(uintptr_t *)copyin(frame_ptr_addr, sizeof(uintptr_t));
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+ this->frameo = copyin_obj(this->framep, PyFrameObject);
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+ this->codep = this->frameo->f_code;
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+ this->lineno = this->frameo->f_calllineno;
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+ this->codeo = copyin_obj(this->codep, PyCodeObject);
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+ this->filenamep = this->codeo->co_filename;
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+ this->fnamep = this->codeo->co_name;
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+ this->filenameo = copyin_obj(this->filenamep, PyStringObject);
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+ this->fnameo = copyin_obj(this->fnamep, PyStringObject);
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+
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+ this->len = 1 + this->filenameo->ob_size + 1 + 5 + 2 +
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+ this->fnameo->ob_size + 1 + 1;
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+
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+ this->result = (char *)alloca(this->len);
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+ this->pos = 0;
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+
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+ add_char('@');
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+ add_str(this->filenamep, this->filenameo);
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+ add_char(':');
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+ add_digit(this->lineno, 10000);
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+ add_digit(this->lineno, 1000);
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+ add_digit(this->lineno, 100);
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+ add_digit(this->lineno, 10);
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+ add_digit(this->lineno, 1);
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+ add_char(' ');
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+ add_char('(');
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+ add_str(this->fnamep, this->fnameo);
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+ add_char(')');
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+ this->result[this->pos] = '\0';
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+
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+ print_result(stringof(this->result));
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+}
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+
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+probe /!at_evalframe(arg0)/
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+{
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+ NULL;
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+}
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diff -up Python-2.6.4/Include/pydtrace.d.systemtap Python-2.6.4/Include/pydtrace.d
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--- Python-2.6.4/Include/pydtrace.d.systemtap 2009-12-18 15:37:15.697243772 -0500
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+++ Python-2.6.4/Include/pydtrace.d 2009-12-18 15:37:15.697243772 -0500
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@ -221,22 +65,17 @@ diff -up Python-2.6.4/Makefile.pre.in.systemtap Python-2.6.4/Makefile.pre.in
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$(LIBOBJS) \
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$(MACHDEP_OBJS) \
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$(THREADOBJ)
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@@ -577,6 +578,23 @@ Python/formatter_unicode.o: $(srcdir)/Py
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@@ -577,6 +578,18 @@ Python/formatter_unicode.o: $(srcdir)/Py
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Python/formatter_string.o: $(srcdir)/Python/formatter_string.c \
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$(STRINGLIB_HEADERS)
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+# Only needed with --with-dtrace
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+buildinclude:
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+ mkdir -p Include
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+Python/phelper.o: buildinclude $(srcdir)/Include/phelper.d
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+ dtrace -o $@ -DPHELPER $(DFLAGS) $(CPPFLAGS) -C -G -s $(srcdir)/Include/phelper.d
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+
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+Include/pydtrace.h: buildinclude $(srcdir)/Include/pydtrace.d
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+ dtrace -o $@ $(DFLAGS) -C -h -s $(srcdir)/Include/pydtrace.d
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+
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+Include/phelper.h: buildinclude $(srcdir)/Include/phelper.d
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+ dtrace -o $@ $(DFLAGS) -C -h -s $(srcdir)/Python/python.d
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+
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+Python/ceval.o: Include/pydtrace.h
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+
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+Python/dtrace.o: buildinclude $(srcdir)/Include/pydtrace.d Python/ceval.o
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@ -253,61 +92,9 @@ diff -up Python-2.6.4/Makefile.pre.in.systemtap Python-2.6.4/Makefile.pre.in
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+.PHONY: smelly funny patchcheck buildinclude
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# IF YOU PUT ANYTHING HERE IT WILL GO AWAY
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diff -up Python-2.6.4/Objects/frameobject.c.systemtap Python-2.6.4/Objects/frameobject.c
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--- Python-2.6.4/Objects/frameobject.c.systemtap 2009-06-01 19:27:15.000000000 -0400
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+++ Python-2.6.4/Objects/frameobject.c 2009-12-18 15:37:15.715242573 -0500
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@@ -698,6 +698,9 @@ PyFrame_New(PyThreadState *tstate, PyCod
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f->f_tstate = tstate;
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f->f_lasti = -1;
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+#ifdef WITH_DTRACE
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+ f->f_calllineno = code->co_firstlineno;
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+#endif
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f->f_lineno = code->co_firstlineno;
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f->f_iblock = 0;
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diff -up Python-2.6.4/pyconfig.h.in.systemtap Python-2.6.4/pyconfig.h.in
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--- Python-2.6.4/pyconfig.h.in.systemtap 2009-12-18 15:37:15.649243175 -0500
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+++ Python-2.6.4/pyconfig.h.in 2009-12-18 15:37:15.719242803 -0500
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@@ -5,6 +5,9 @@
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#define Py_PYCONFIG_H
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+/* Define if building universal (internal helper macro) */
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+#undef AC_APPLE_UNIVERSAL_BUILD
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+
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/* Define for AIX if your compiler is a genuine IBM xlC/xlC_r and you want
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support for AIX C++ shared extension modules. */
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#undef AIX_GENUINE_CPLUSPLUS
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@@ -945,6 +948,28 @@
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||||
/* Define to 1 if your <sys/time.h> declares `struct tm'. */
|
||||
#undef TM_IN_SYS_TIME
|
||||
|
||||
+/* Enable extensions on AIX 3, Interix. */
|
||||
+#ifndef _ALL_SOURCE
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||||
+# undef _ALL_SOURCE
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||||
+#endif
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||||
+/* Enable GNU extensions on systems that have them. */
|
||||
+#ifndef _GNU_SOURCE
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+# undef _GNU_SOURCE
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||||
+#endif
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||||
+/* Enable threading extensions on Solaris. */
|
||||
+#ifndef _POSIX_PTHREAD_SEMANTICS
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||||
+# undef _POSIX_PTHREAD_SEMANTICS
|
||||
+#endif
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||||
+/* Enable extensions on HP NonStop. */
|
||||
+#ifndef _TANDEM_SOURCE
|
||||
+# undef _TANDEM_SOURCE
|
||||
+#endif
|
||||
+/* Enable general extensions on Solaris. */
|
||||
+#ifndef __EXTENSIONS__
|
||||
+# undef __EXTENSIONS__
|
||||
+#endif
|
||||
+
|
||||
+
|
||||
/* Define if you want to use MacPython modules on MacOSX in unix-Python. */
|
||||
#undef USE_TOOLBOX_OBJECT_GLUE
|
||||
|
||||
@@ -964,6 +989,9 @@
|
||||
/* Define if you want documentation strings in extension modules */
|
||||
#undef WITH_DOC_STRINGS
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||||
|
|
@ -318,32 +105,6 @@ diff -up Python-2.6.4/pyconfig.h.in.systemtap Python-2.6.4/pyconfig.h.in
|
|||
/* Define if you want to use the new-style (Openstep, Rhapsody, MacOS) dynamic
|
||||
linker (dyld) instead of the old-style (NextStep) dynamic linker (rld).
|
||||
Dyld is necessary to support frameworks. */
|
||||
@@ -1017,15 +1045,25 @@
|
||||
/* This must be defined on some systems to enable large file support. */
|
||||
#undef _LARGEFILE_SOURCE
|
||||
|
||||
+/* Define to 1 if on MINIX. */
|
||||
+#undef _MINIX
|
||||
+
|
||||
/* Define on NetBSD to activate all library features */
|
||||
#undef _NETBSD_SOURCE
|
||||
|
||||
/* Define _OSF_SOURCE to get the makedev macro. */
|
||||
#undef _OSF_SOURCE
|
||||
|
||||
+/* Define to 2 if the system does not provide POSIX.1 features except with
|
||||
+ this defined. */
|
||||
+#undef _POSIX_1_SOURCE
|
||||
+
|
||||
/* Define to activate features from IEEE Stds 1003.1-2001 */
|
||||
#undef _POSIX_C_SOURCE
|
||||
|
||||
+/* Define to 1 if you need to in order for `stat' and other things to work. */
|
||||
+#undef _POSIX_SOURCE
|
||||
+
|
||||
/* Define if you have POSIX threads, and your system does not define that. */
|
||||
#undef _POSIX_THREADS
|
||||
|
||||
diff -up Python-2.6.4/Python/ceval.c.systemtap Python-2.6.4/Python/ceval.c
|
||||
--- Python-2.6.4/Python/ceval.c.systemtap 2009-05-30 17:43:48.000000000 -0400
|
||||
+++ Python-2.6.4/Python/ceval.c 2009-12-18 15:37:15.723242474 -0500
|
||||
|
|
@ -414,91 +175,6 @@ diff -up Python-2.6.4/Python/ceval.c.systemtap Python-2.6.4/Python/ceval.c
|
|||
|
||||
/* Interpreter main loop */
|
||||
|
||||
@@ -538,9 +591,84 @@ PyEval_EvalFrame(PyFrameObject *f) {
|
||||
return PyEval_EvalFrameEx(f, 0);
|
||||
}
|
||||
|
||||
+/*
|
||||
+ * These shenanigans look like utter madness, but what we're actually doing is
|
||||
+ * making sure that the ustack helper will see the PyFrameObject pointer on the
|
||||
+ * stack. We have two tricky cases:
|
||||
+ *
|
||||
+ * amd64
|
||||
+ *
|
||||
+ * We use up the six registers for passing arguments, meaning the call can't
|
||||
+ * use a register for passing 'f', and has to push it onto the stack in a known
|
||||
+ * location.
|
||||
+ *
|
||||
+ * And how does "throwflag" figure in to this? -PN
|
||||
+ *
|
||||
+ * SPARC
|
||||
+ *
|
||||
+ * Here the problem is that (on 32-bit) the compiler is re-using %i0 before
|
||||
+ * some calls inside PyEval_EvalFrameReal(), which means that when it's saved,
|
||||
+ * it's just some junk value rather than the real first argument. So, instead,
|
||||
+ * we trace our proxy PyEval_EvalFrame(), where we 'know' the compiler won't
|
||||
+ * decide to re-use %i0. We also need to defeat optimization of our proxy.
|
||||
+ */
|
||||
+
|
||||
+#if defined(WITH_DTRACE)
|
||||
+
|
||||
+#if defined(__amd64)
|
||||
+PyObject *PyEval_EvalFrameExReal(long, long, long, long, long, long,
|
||||
+ PyFrameObject *, int throwflag);
|
||||
+
|
||||
+
|
||||
+
|
||||
PyObject *
|
||||
PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
|
||||
{
|
||||
+ volatile PyObject *f2;
|
||||
+ f2 = PyEval_EvalFrameExReal(0, 0, 0, 0, 0, 0, f, throwflag);
|
||||
+ return (PyObject *)f2;
|
||||
+}
|
||||
+
|
||||
+PyObject *
|
||||
+PyEval_EvalFrameExReal(long a1, long a2, long a3, long a4, long a5, long a6,
|
||||
+ PyFrameObject *f, int throwflag)
|
||||
+{
|
||||
+
|
||||
+#elif defined(__sparc)
|
||||
+
|
||||
+PyObject *PyEval_EvalFrameExReal(PyFrameObject *f, int throwflag);
|
||||
+
|
||||
+volatile int dummy;
|
||||
+
|
||||
+PyObject *
|
||||
+PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
|
||||
+{
|
||||
+ volatile PyObject *f2;
|
||||
+ f2 = PyEval_EvalFrameExReal(f, throwflag);
|
||||
+ dummy = f->ob_refcnt;
|
||||
+ return (PyObject *)f2;
|
||||
+}
|
||||
+
|
||||
+PyObject *
|
||||
+PyEval_EvalFrameExReal(PyFrameObject *f, int throwflag)
|
||||
+{
|
||||
+
|
||||
+#else /* __amd64 || __sparc */
|
||||
+
|
||||
+PyObject *
|
||||
+PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
|
||||
+{
|
||||
+
|
||||
+#endif /* __amd64 || __sparc */
|
||||
+
|
||||
+#else /* WITH_DTRACE not defined */
|
||||
+
|
||||
+PyObject *
|
||||
+PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
|
||||
+{
|
||||
+
|
||||
+#endif /* WITH_DTRACE */
|
||||
+
|
||||
#ifdef DXPAIRS
|
||||
int lastopcode = 0;
|
||||
#endif
|
||||
@@ -763,6 +891,9 @@ PyEval_EvalFrameEx(PyFrameObject *f, int
|
||||
}
|
||||
}
|
||||
|
|
@ -509,29 +185,6 @@ diff -up Python-2.6.4/Python/ceval.c.systemtap Python-2.6.4/Python/ceval.c
|
|||
co = f->f_code;
|
||||
names = co->co_names;
|
||||
consts = co->co_consts;
|
||||
@@ -2383,6 +2514,10 @@ PyEval_EvalFrameEx(PyFrameObject *f, int
|
||||
PyObject **sp;
|
||||
PCALL(PCALL_ALL);
|
||||
sp = stack_pointer;
|
||||
+#ifdef WITH_DTRACE
|
||||
+ f->f_calllineno = PyCode_Addr2Line(f->f_code,
|
||||
+ f->f_lasti);
|
||||
+#endif
|
||||
#ifdef WITH_TSC
|
||||
x = call_function(&sp, oparg, &intr0, &intr1);
|
||||
#else
|
||||
@@ -2425,6 +2560,11 @@ PyEval_EvalFrameEx(PyFrameObject *f, int
|
||||
} else
|
||||
Py_INCREF(func);
|
||||
sp = stack_pointer;
|
||||
+#ifdef WITH_DTRACE
|
||||
+ f->f_calllineno = PyCode_Addr2Line(f->f_code,
|
||||
+ f->f_lasti);
|
||||
+#endif
|
||||
+
|
||||
READ_TIMESTAMP(intr0);
|
||||
x = ext_do_call(func, &sp, flags, na, nk);
|
||||
READ_TIMESTAMP(intr1);
|
||||
@@ -2723,6 +2863,8 @@ fast_yield:
|
||||
|
||||
/* pop frame */
|
||||
|
|
|
|||
10
python.spec
10
python.spec
|
|
@ -52,7 +52,7 @@
|
|||
Summary: An interpreted, interactive, object-oriented programming language
|
||||
Name: %{python}
|
||||
Version: 2.6.4
|
||||
Release: 18%{?dist}
|
||||
Release: 19%{?dist}
|
||||
License: Python
|
||||
Group: Development/Languages
|
||||
Provides: python-abi = %{pybasever}
|
||||
|
|
@ -248,6 +248,7 @@ Patch54: python-2.6.4-setup-db48.patch
|
|||
# Systemtap support: add statically-defined probe points
|
||||
# Patch based on upstream bug: http://bugs.python.org/issue4111
|
||||
# fixed up by mjw and mcohen for 2.6.2, then fixed up by dmalcolm for 2.6.4
|
||||
# then rewritten by mjw (attachment 390110 of rhbz 545179)
|
||||
Patch55: python-2.6.4-dtrace.patch
|
||||
|
||||
# "lib64 patches"
|
||||
|
|
@ -941,6 +942,13 @@ rm -fr %{buildroot}
|
|||
# payload file would be unpackaged)
|
||||
|
||||
%changelog
|
||||
* Wed Feb 10 2010 David Malcolm <dmalcolm@redhat.com> - 2.6.4-19
|
||||
- revise the systemtap patch (patch 55:python-2.6.4-dtrace.patch) to the
|
||||
new version by mjw in attachment 390110 of rhbz:545179, as this should
|
||||
eliminate the performance penalty for the case where the probes aren't in
|
||||
use, and eliminate all architecture-specific code (rhbz:563541; except on
|
||||
sparc)
|
||||
|
||||
* Tue Feb 9 2010 David Malcolm <dmalcolm@redhat.com> - 2.6.4-18
|
||||
- add a systemtap tapset defining "python.function.entry" and
|
||||
"python.function.return" to make it easy to use the static probepoint within
|
||||
|
|
|
|||
Loading…
Reference in New Issue