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Message-ID: <5413F7BE.2020201@gmail.com>
Date: Sat, 13 Sep 2014 16:52:30 +0900
From: taeung <treeze.taeung@...il.com>
To: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org
CC: Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH 03/13] perf annotate: Move session handling out of __cmd_annotate()
Hi,
I modified error code for the requirement as below.
Author: taeung <treeze.taeung@...il.com>
Date: Sat Sep 13 16:22:53 2014 +0900
modified error code when perf_session__new() fail
Because perf_session__new() could fail
for more reasons than just ENOMEM,
I modified error code(ENOMEM or EINVAL)
into -1.
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 1ec429f..81c9fda 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -199,7 +199,7 @@ static int __cmd_annotate(struct perf_annotate *ann)
session = perf_session__new(&file, false, &ann->tool);
if (session == NULL)
- return -ENOMEM;
+ return -1;
machines__set_symbol_filter(&session->machines,
symbol__annotate_init);
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index 9a5a035..3363dce 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -683,7 +683,7 @@ static int __cmd_diff(void)
d->session = perf_session__new(&d->file, false, &tool);
if (!d->session) {
pr_err("Failed to open %s\n", d->file.path);
- ret = -ENOMEM;
+ ret = -1;
goto out_delete;
}
diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c
index 66e12f5..0f93f85 100644
--- a/tools/perf/builtin-evlist.c
+++ b/tools/perf/builtin-evlist.c
@@ -28,7 +28,7 @@ static int __cmd_evlist(const char *file_name, struct
perf_attr_details *details
session = perf_session__new(&file, 0, NULL);
if (session == NULL)
- return -ENOMEM;
+ return -1;
evlist__for_each(session->evlist, pos)
perf_evsel__fprintf(pos, details, stdout);
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 9a02807..8dbdd13 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -359,7 +359,7 @@ static int __cmd_inject(struct perf_inject *inject)
session = perf_session__new(&file, true, &inject->tool);
if (session == NULL)
- return -ENOMEM;
+ return -1;
if (inject->build_ids) {
inject->tool.sample = perf_event__inject_buildid;
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c
index bef3376..b518f4b 100644
--- a/tools/perf/builtin-kmem.c
+++ b/tools/perf/builtin-kmem.c
@@ -422,7 +422,7 @@ static int __cmd_kmem(void)
session = perf_session__new(&file, false, &perf_kmem);
if (session == NULL)
- return -ENOMEM;
+ return -1;
if (perf_session__create_kernel_maps(session) < 0)
goto out_delete;
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index 43367eb..828e706 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -1060,7 +1060,7 @@ static int read_events(struct perf_kvm_stat *kvm)
.comm = perf_event__process_comm,
.ordered_samples = true,
};
- struct perf_data_file file = {
+ struct perf_data_file file = {
.path = kvm->file_name,
.mode = PERF_DATA_MODE_READ,
};
@@ -1069,7 +1069,7 @@ static int read_events(struct perf_kvm_stat *kvm)
kvm->session = perf_session__new(&file, false, &kvm->tool);
if (!kvm->session) {
pr_err("Initializing perf session failed\n");
- return -EINVAL;
+ return -1;
}
if (!perf_session__has_traces(kvm->session, "kvm record"))
@@ -1369,7 +1369,7 @@ static int kvm_events_live(struct perf_kvm_stat *kvm,
*/
kvm->session = perf_session__new(&file, false, &kvm->tool);
if (kvm->session == NULL) {
- err = -ENOMEM;
+ err = -1;
goto out;
}
kvm->session->evlist = kvm->evlist;
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
index 6148afc..49f1e30 100644
--- a/tools/perf/builtin-lock.c
+++ b/tools/perf/builtin-lock.c
@@ -862,7 +862,7 @@ static int __cmd_report(bool display_info)
session = perf_session__new(&file, false, &eops);
if (!session) {
pr_err("Initializing perf session failed\n");
- return -ENOMEM;
+ return -1;
}
if (!perf_session__has_traces(session, "lock record"))
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 4a1a6c9..75976ce 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -124,7 +124,7 @@ static int report_raw_events(struct perf_mem *mem)
&mem->tool);
if (session == NULL)
- return -ENOMEM;
+ return -1;
if (mem->cpu_list) {
ret = perf_session__cpu_bitmap(session, mem->cpu_list,
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 21d830b..1a7abac 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -712,7 +712,7 @@ int cmd_report(int argc, const char **argv, const
char *prefix __maybe_unused)
repeat:
session = perf_session__new(&file, false, &report.tool);
if (session == NULL)
- return -ENOMEM;
+ return -1;
report.session = session;
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index f57035b..77cef60 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1725,7 +1725,7 @@ int cmd_script(int argc, const char **argv, const
char *prefix __maybe_unused)
session = perf_session__new(&file, false, &script.tool);
if (session == NULL)
- return -ENOMEM;
+ return -1;
if (header || header_only) {
perf_session__fprintf_info(session, stdout, show_full_info);
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 2f1a522..dc9a465 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -1605,7 +1605,7 @@ static int __cmd_timechart(struct timechart
*tchart, const char *output_name)
int ret = -EINVAL;
if (session == NULL)
- return -ENOMEM;
+ return -1;
(void)perf_header__process_sections(&session->header,
perf_data_file__fd(session->file),
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 377971d..8217b5d 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -911,7 +911,7 @@ static int __cmd_top(struct perf_top *top)
top->session = perf_session__new(NULL, false, NULL);
if (top->session == NULL)
- return -ENOMEM;
+ return -1;
machines__set_symbol_filter(&top->session->machines, symbol_filter);
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index a6c3752..9e23293 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2220,7 +2220,7 @@ static int trace__replay(struct trace *trace)
session = perf_session__new(&file, false, &trace->tool);
if (session == NULL)
- return -ENOMEM;
+ return -1;
trace->host = &session->machines.host;
Thanks,
--
taeung
> On Tue, Aug 12, 2014 at 03:40:35PM +0900, Namhyung Kim wrote:
>
> SNIP
>
> >
> > @@ -301,6 +281,10 @@ int cmd_annotate(int argc, const char **argv,
> const char *prefix __maybe_unused)
> > .ordering_requires_timestamps = true,
> > },
> > };
> > + struct perf_data_file file = {
> > + .path = input_name,
> > + .mode = PERF_DATA_MODE_READ,
> > + };
> > const struct option options[] = {
> > OPT_STRING('i', "input", &input_name, "file",
> > "input file name"),
> > @@ -308,7 +292,7 @@ int cmd_annotate(int argc, const char **argv,
> const char *prefix __maybe_unused)
> > "only consider symbols in these dsos"),
> > OPT_STRING('s', "symbol", &annotate.sym_hist_filter, "symbol",
> > "symbol to annotate"),
> > - OPT_BOOLEAN('f', "force", &annotate.force, "don't complain, do it"),
> > + OPT_BOOLEAN('f', "force", &file.force, "don't complain, do it"),
> > OPT_INCR('v', "verbose", &verbose,
> > "be more verbose (show symbol address, etc)"),
> > OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
> > @@ -341,6 +325,7 @@ int cmd_annotate(int argc, const char **argv,
> const char *prefix __maybe_unused)
> > "Show event group information together"),
> > OPT_END()
> > };
> > + int ret;
> >
> > argc = parse_options(argc, argv, options, annotate_usage, 0);
> >
> > @@ -353,11 +338,16 @@ int cmd_annotate(int argc, const char **argv,
> const char *prefix __maybe_unused)
> >
> > setup_browser(true);
> >
> > + annotate.session = perf_session__new(&file, false, &annotate.tool);
> > + if (annotate.session == NULL)
> > + return -ENOMEM;
>
> I know you're just moving code, but perf_session__new could
> fail for more reasons than just ENOMEM, which is the most
> unlikely case ;-) -1 is probably better option here
>
> jirka
--
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