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Date:	Thu, 12 Aug 2010 12:59:18 -0500
From:	Tom Zanussi <tzanussi@...il.com>
To:	eranian@...gle.com
Cc:	linux-kernel@...r.kernel.org, acme@...radead.org, mingo@...e.hu,
	acme@...hat.com, fweisbec@...il.com, peterz@...radead.org
Subject: [PATCH] perf trace: get rid of the hard-coded paths in the report scripts

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 inadvertantly 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.

Reported-by: Stephane Eranian <eranian@...gle.com>
Signed-off-by: Tom Zanussi <tzanussi@...il.com>
---
 tools/perf/builtin-trace.c                         |   22 ++++++++++++++++---
 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 +-
 12 files changed, 30 insertions(+), 15 deletions(-)

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 40a6a29..88a1883 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -573,6 +573,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __used)
 	const char *suffix = NULL;
 	const char **__argv;
 	char *script_path;
+	struct stat perf_stat;
 	int i, err;
 
 	if (argc >= 2 && strncmp(argv[1], "rec", strlen("rec")) == 0) {
@@ -689,8 +690,6 @@ int cmd_trace(int argc, const char **argv, const char *prefix __used)
 		return -EINVAL;
 
 	if (generate_script_lang) {
-		struct stat perf_stat;
-
 		int input = open(input_name, O_RDONLY);
 		if (input < 0) {
 			perror("failed to open file");
@@ -719,10 +718,25 @@ 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);
+		err = stat(script_exec_path, &perf_stat);
+		if (err < 0) {
+			snprintf(script_exec_path, MAXPATHLEN, "%s/scripts/%s",
+				 perf_exec_path(), script_name);
+			err = stat(script_exec_path, &perf_stat);
+			if (err < 0)
+				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..47cf0b7 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 perl/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..407ec70 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 perl/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..0c129e1 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 perl/rw-by-pid.pl
 
 
 
diff --git a/tools/perf/scripts/perl/bin/rwtop-report b/tools/perf/scripts/perl/bin/rwtop-report
index 93e698c..5bac5bb 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 perl/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..dcfdd05 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 perl/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..6ce9247 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 perl/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..b39182f 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 python/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..8299b69 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 $@ -s python/sched-migration.py
diff --git a/tools/perf/scripts/python/bin/sctop-report b/tools/perf/scripts/python/bin/sctop-report
index b01c842..9fe812c 100644
--- a/tools/perf/scripts/python/bin/sctop-report
+++ b/tools/perf/scripts/python/bin/sctop-report
@@ -21,4 +21,4 @@ elif [ "$n_args" -gt 0 ] ; then
     interval=$1
     shift
 fi
-perf trace $@ -s ~/libexec/perf-core/scripts/python/sctop.py $comm $interval
+perf trace $@ -s python/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..ec9d4d9 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 python/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..9ed7854 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 python/syscall-counts.py $comm
-- 
1.6.5.rc2

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