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Subject[PATCH] perf trace: get rid of the hard-coded paths in the report scripts, v3
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The perf trace report shell scripts hard-code the exec path of the
scripts into their command-lines, which doesn't work if perf has been
installed somewhere else.

Instead, perf trace should create the paths at run-time. This patch
does that and removes the hard-coded paths from all the report scripts.

v2 changes: The first version inadvertently caused scripts run from
outside the perf exec path to fail e.g. 'perf trace -s test.py'. The
fix is to try the script name without the exec path first, then the
version using the exec path, which restores the expected behavior.

v3 changes, from Stephane Eranian: Besides the stat() to access()
change, I fixed the pathname you were building, it was missing the
language name. The way I solved that is by leveraging the
scripting_ops->name field, but for that I had to make sure it would
match the subdir name, i.e., all lower-case. I also add an error
message when the script is not found, so users understand what went
wrong without turning on any sort of debugging.

Reported-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
---
tools/perf/builtin-trace.c | 23 ++++++++++++++++++-
tools/perf/scripts/perl/bin/failed-syscalls-report | 2 +-
tools/perf/scripts/perl/bin/rw-by-file-report | 2 +-
tools/perf/scripts/perl/bin/rw-by-pid-report | 2 +-
tools/perf/scripts/perl/bin/rwtop-report | 2 +-
tools/perf/scripts/perl/bin/wakeup-latency-report | 2 +-
tools/perf/scripts/perl/bin/workqueue-stats-report | 2 +-
.../python/bin/failed-syscalls-by-pid-report | 2 +-
.../perf/scripts/python/bin/sched-migration-report | 2 +-
tools/perf/scripts/python/bin/sctop-report | 2 +-
.../python/bin/syscall-counts-by-pid-report | 2 +-
.../perf/scripts/python/bin/syscall-counts-report | 3 +-
.../perf/util/scripting-engines/trace-event-perl.c | 2 +-
.../util/scripting-engines/trace-event-python.c | 2 +-
14 files changed, 35 insertions(+), 15 deletions(-)
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 40a6a29..db1d950 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -719,10 +719,29 @@ int cmd_trace(int argc, const char **argv, const char *prefix __used)
}

if (script_name) {
- err = scripting_ops->start_script(script_name, argc, argv);
+ char script_exec_path[MAXPATHLEN];
+
+ snprintf(script_exec_path, MAXPATHLEN, "%s", script_name);
+
+ if (access(script_exec_path, R_OK)) {
+
+ snprintf(script_exec_path, MAXPATHLEN, "%s/scripts/%s/%s",
+ perf_exec_path(), scripting_ops->name, script_name);
+
+ err = access(script_exec_path, R_OK);
+ if (err) {
+ fprintf(stderr, "script %s not found\n", script_name);
+ goto out;
+ }
+ }
+
+ err = scripting_ops->start_script(script_exec_path,
+ argc, argv);
if (err)
goto out;
- pr_debug("perf trace started with script %s\n\n", script_name);
+
+ pr_debug("perf trace started with script %s\n\n",
+ script_exec_path);
}

err = __cmd_trace(session);
diff --git a/tools/perf/scripts/perl/bin/failed-syscalls-report b/tools/perf/scripts/perl/bin/failed-syscalls-report
index e3a5e55..d58b39d 100644
--- a/tools/perf/scripts/perl/bin/failed-syscalls-report
+++ b/tools/perf/scripts/perl/bin/failed-syscalls-report
@@ -7,4 +7,4 @@ if [ $# -gt 0 ] ; then
shift
fi
fi
-perf trace $@ -s ~/libexec/perf-core/scripts/perl/failed-syscalls.pl $comm
+perf trace $@ -s failed-syscalls.pl $comm
diff --git a/tools/perf/scripts/perl/bin/rw-by-file-report b/tools/perf/scripts/perl/bin/rw-by-file-report
index d83070b..02cd821 100644
--- a/tools/perf/scripts/perl/bin/rw-by-file-report
+++ b/tools/perf/scripts/perl/bin/rw-by-file-report
@@ -7,7 +7,7 @@ if [ $# -lt 1 ] ; then
fi
comm=$1
shift
-perf trace $@ -s ~/libexec/perf-core/scripts/perl/rw-by-file.pl $comm
+perf trace $@ -s rw-by-file.pl $comm



diff --git a/tools/perf/scripts/perl/bin/rw-by-pid-report b/tools/perf/scripts/perl/bin/rw-by-pid-report
index 7ef4698..86f5afc 100644
--- a/tools/perf/scripts/perl/bin/rw-by-pid-report
+++ b/tools/perf/scripts/perl/bin/rw-by-pid-report
@@ -1,6 +1,6 @@
#!/bin/bash
# description: system-wide r/w activity
-perf trace $@ -s ~/libexec/perf-core/scripts/perl/rw-by-pid.pl
+perf trace $@ -s rw-by-pid.pl



diff --git a/tools/perf/scripts/perl/bin/rwtop-report b/tools/perf/scripts/perl/bin/rwtop-report
index 93e698c..5475fff 100644
--- a/tools/perf/scripts/perl/bin/rwtop-report
+++ b/tools/perf/scripts/perl/bin/rwtop-report
@@ -17,7 +17,7 @@ if [ "$n_args" -gt 0 ] ; then
interval=$1
shift
fi
-perf trace $@ -s ~/libexec/perf-core/scripts/perl/rwtop.pl $interval
+perf trace $@ -s rwtop.pl $interval



diff --git a/tools/perf/scripts/perl/bin/wakeup-latency-report b/tools/perf/scripts/perl/bin/wakeup-latency-report
index a0d898f..78c2f57 100644
--- a/tools/perf/scripts/perl/bin/wakeup-latency-report
+++ b/tools/perf/scripts/perl/bin/wakeup-latency-report
@@ -1,6 +1,6 @@
#!/bin/bash
# description: system-wide min/max/avg wakeup latency
-perf trace $@ -s ~/libexec/perf-core/scripts/perl/wakeup-latency.pl
+perf trace $@ -s wakeup-latency.pl



diff --git a/tools/perf/scripts/perl/bin/workqueue-stats-report b/tools/perf/scripts/perl/bin/workqueue-stats-report
index 3508113..ee6800f 100644
--- a/tools/perf/scripts/perl/bin/workqueue-stats-report
+++ b/tools/perf/scripts/perl/bin/workqueue-stats-report
@@ -1,6 +1,6 @@
#!/bin/bash
# description: workqueue stats (ins/exe/create/destroy)
-perf trace $@ -s ~/libexec/perf-core/scripts/perl/workqueue-stats.pl
+perf trace $@ -s workqueue-stats.pl



diff --git a/tools/perf/scripts/python/bin/failed-syscalls-by-pid-report b/tools/perf/scripts/python/bin/failed-syscalls-by-pid-report
index 3029354..9c07aa4 100644
--- a/tools/perf/scripts/python/bin/failed-syscalls-by-pid-report
+++ b/tools/perf/scripts/python/bin/failed-syscalls-by-pid-report
@@ -7,4 +7,4 @@ if [ $# -gt 0 ] ; then
shift
fi
fi
-perf trace $@ -s ~/libexec/perf-core/scripts/python/failed-syscalls-by-pid.py $comm
+perf trace $@ -s failed-syscalls-by-pid.py $comm
diff --git a/tools/perf/scripts/python/bin/sched-migration-report b/tools/perf/scripts/python/bin/sched-migration-report
index 61d05f7..2b724d1 100644
--- a/tools/perf/scripts/python/bin/sched-migration-report
+++ b/tools/perf/scripts/python/bin/sched-migration-report
@@ -1,3 +1,3 @@
#!/bin/bash
# description: sched migration overview
-perf trace $@ -s ~/libexec/perf-core/scripts/python/sched-migration.py
+perf trace $@ -s sched-migration.py
diff --git a/tools/perf/scripts/python/bin/sctop-report b/tools/perf/scripts/python/bin/sctop-report
index b01c842..0368461 100644
--- a/tools/perf/scripts/python/bin/sctop-report
+++ b/tools/perf/scripts/python/bin/sctop-report
@@ -21,4 +21,4 @@ elif [ "$n_args" -gt 0 ] ; then
interval=$1
shift
fi
-perf trace $@ -s ~/libexec/perf-core/scripts/python/sctop.py $comm $interval
+perf trace $@ -s sctop.py $comm $interval
diff --git a/tools/perf/scripts/python/bin/syscall-counts-by-pid-report b/tools/perf/scripts/python/bin/syscall-counts-by-pid-report
index 9e9d8dd..2822281 100644
--- a/tools/perf/scripts/python/bin/syscall-counts-by-pid-report
+++ b/tools/perf/scripts/python/bin/syscall-counts-by-pid-report
@@ -7,4 +7,4 @@ if [ $# -gt 0 ] ; then
shift
fi
fi
-perf trace $@ -s ~/libexec/perf-core/scripts/python/syscall-counts-by-pid.py $comm
+perf trace $@ -s syscall-counts-by-pid.py $comm
diff --git a/tools/perf/scripts/python/bin/syscall-counts-report b/tools/perf/scripts/python/bin/syscall-counts-report
index dc076b6..6e97501 100644
--- a/tools/perf/scripts/python/bin/syscall-counts-report
+++ b/tools/perf/scripts/python/bin/syscall-counts-report
@@ -1,3 +1,4 @@
+
#!/bin/bash
# description: system-wide syscall counts
# args: [comm]
@@ -7,4 +8,4 @@ if [ $# -gt 0 ] ; then
shift
fi
fi
-perf trace $@ -s ~/libexec/perf-core/scripts/python/syscall-counts.py $comm
+perf trace $@ -s syscall-counts.py $comm
diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c
index b059dc5..97e8c6d 100644
--- a/tools/perf/util/scripting-engines/trace-event-perl.c
+++ b/tools/perf/util/scripting-engines/trace-event-perl.c
@@ -557,7 +557,7 @@ static int perl_generate_script(const char *outfile)
}

struct scripting_ops perl_scripting_ops = {
- .name = "Perl",
+ .name = "perl",
.start_script = perl_start_script,
.stop_script = perl_stop_script,
.process_event = perl_process_event,
diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index 33a6325..49655a8 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -586,7 +586,7 @@ static int python_generate_script(const char *outfile)
}

struct scripting_ops python_scripting_ops = {
- .name = "Python",
+ .name = "python",
.start_script = python_start_script,
.stop_script = python_stop_script,
.process_event = python_process_event,
--
1.6.4.GIT




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