From 5c6970af2f4be4e04b06fe78214f6809777a8354 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 2 Jun 2011 10:55:10 -0300 Subject: perf python: Use exception to propagate errors We were using pr_debug to tell the user about not being able to parse a sample where we should really use the python way of reporting errors: exceptions. Fixes this problem: [root@emilia ~]# python >>> import perf Traceback (most recent call last): File "", line 1, in ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: eprintf >>> [root@emilia ~] As we want to keep the objects linked in the python binding (and in the future in a shared library) minimal. Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-m9dba9kaluas0kq8r58z191c@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/python.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'tools/perf/util/python.c') diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 69436b3200a..2dd1698e093 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -694,14 +694,12 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, err = perf_event__parse_sample(event, first->attr.sample_type, perf_sample_size(first->attr.sample_type), sample_id_all, &pevent->sample); - if (err) { - pr_err("Can't parse sample, err = %d\n", err); - goto end; - } - + if (err) + return PyErr_Format(PyExc_OSError, + "perf: can't parse sample, err=%d", err); return pyevent; } -end: + Py_INCREF(Py_None); return Py_None; } -- cgit v1.2.3-18-g5258 From c2a70653af45c9cbb0cab900e8931b062e57b1ae Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 2 Jun 2011 11:04:54 -0300 Subject: perf evlist: Don't die if sample_{id_all|type} is invalid Fixes two more cases where the python binding would not load: . Not finding die(), which it shouldn't anyway, not good to just stop the world because some particular perf.data file is invalid, just propagate the error to the caller. . Not finding perf_sample_size: fix it by moving it from event.c to evsel, where it belongs, as most cases are moving to operate on an evsel object.o One of the fixed problems: [root@emilia ~]# python >>> import perf Traceback (most recent call last): File "", line 1, in ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: perf_sample_size >>> [root@emilia ~]# Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-1hkj7b2cvgbfnoizsekjb6c9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/python.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/util/python.c') diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 2dd1698e093..24063b4d41e 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -692,7 +692,7 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, first = list_entry(evlist->entries.next, struct perf_evsel, node); err = perf_event__parse_sample(event, first->attr.sample_type, - perf_sample_size(first->attr.sample_type), + perf_evsel__sample_size(first), sample_id_all, &pevent->sample); if (err) return PyErr_Format(PyExc_OSError, -- cgit v1.2.3-18-g5258 From e95cc02880947e9f77540b03e166470e8ac14cbc Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 31 Mar 2011 18:27:42 +0200 Subject: perf python: Fix argument name list of read_on_cpu() Mandatory arguments need to be present in the argument name list, as well as optional arguments, otherwise python barfs: # ./python/twatch.py Traceback (most recent call last): File "./python/twatch.py", line 41, in main() File "./python/twatch.py", line 32, in main event = evlist.read_on_cpu(cpu) RuntimeError: more argument specifiers than keyword list entries Hence, add cpu to the name list. Cc: David Ahern Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Tom Zanussi Link: http://lkml.kernel.org/r/1301588863-20210-1-git-send-email-fweisbec@gmail.com Signed-off-by: Frederic Weisbecker Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/python.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/util/python.c') diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index 24063b4d41e..a9ac0504aab 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -674,7 +674,7 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, struct perf_evlist *evlist = &pevlist->evlist; union perf_event *event; int sample_id_all = 1, cpu; - static char *kwlist[] = {"sample_id_all", NULL, NULL}; + static char *kwlist[] = {"cpu", "sample_id_all", NULL, NULL}; int err; if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist, -- cgit v1.2.3-18-g5258 From 64348153c63b8c1f99f19f14a9c3cbd5df70c9d3 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 31 Mar 2011 18:27:43 +0200 Subject: perf python: Cleanup useless double NULL termination in method arg names The list of methods argument names only needs to be NULL terminated once. Remove the second ones. Cc: David Ahern Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Tom Zanussi Link: http://lkml.kernel.org/r/1301588863-20210-2-git-send-email-fweisbec@gmail.com Signed-off-by: Frederic Weisbecker Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/python.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'tools/perf/util/python.c') diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index a9ac0504aab..8e0b5a39d8a 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -247,7 +247,7 @@ struct pyrf_cpu_map { static int pyrf_cpu_map__init(struct pyrf_cpu_map *pcpus, PyObject *args, PyObject *kwargs) { - static char *kwlist[] = { "cpustr", NULL, NULL, }; + static char *kwlist[] = { "cpustr", NULL }; char *cpustr = NULL; if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|s", @@ -316,7 +316,7 @@ struct pyrf_thread_map { static int pyrf_thread_map__init(struct pyrf_thread_map *pthreads, PyObject *args, PyObject *kwargs) { - static char *kwlist[] = { "pid", "tid", NULL, NULL, }; + static char *kwlist[] = { "pid", "tid", NULL }; int pid = -1, tid = -1; if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", @@ -418,7 +418,9 @@ static int pyrf_evsel__init(struct pyrf_evsel *pevsel, "wakeup_events", "bp_type", "bp_addr", - "bp_len", NULL, NULL, }; + "bp_len", + NULL + }; u64 sample_period = 0; u32 disabled = 0, inherit = 0, @@ -499,7 +501,7 @@ static PyObject *pyrf_evsel__open(struct pyrf_evsel *pevsel, struct thread_map *threads = NULL; PyObject *pcpus = NULL, *pthreads = NULL; int group = 0, inherit = 0; - static char *kwlist[] = {"cpus", "threads", "group", "inherit", NULL, NULL}; + static char *kwlist[] = { "cpus", "threads", "group", "inherit", NULL }; if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|OOii", kwlist, &pcpus, &pthreads, &group, &inherit)) @@ -582,8 +584,7 @@ static PyObject *pyrf_evlist__mmap(struct pyrf_evlist *pevlist, PyObject *args, PyObject *kwargs) { struct perf_evlist *evlist = &pevlist->evlist; - static char *kwlist[] = {"pages", "overwrite", - NULL, NULL}; + static char *kwlist[] = { "pages", "overwrite", NULL }; int pages = 128, overwrite = false; if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ii", kwlist, @@ -603,7 +604,7 @@ static PyObject *pyrf_evlist__poll(struct pyrf_evlist *pevlist, PyObject *args, PyObject *kwargs) { struct perf_evlist *evlist = &pevlist->evlist; - static char *kwlist[] = {"timeout", NULL, NULL}; + static char *kwlist[] = { "timeout", NULL }; int timeout = -1, n; if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|i", kwlist, &timeout)) @@ -674,7 +675,7 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, struct perf_evlist *evlist = &pevlist->evlist; union perf_event *event; int sample_id_all = 1, cpu; - static char *kwlist[] = {"cpu", "sample_id_all", NULL, NULL}; + static char *kwlist[] = { "cpu", "sample_id_all", NULL }; int err; if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|i", kwlist, -- cgit v1.2.3-18-g5258