linux-kernel - [GIT PULL] ktest: Updates for 6.9

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Date: Mon, 18 Mar 2024 12:03:04 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: LKML <linux-kernel@...r.kernel.org>, John 'Warthog9' Hawley
 <warthog9@...nel.org>, "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [GIT PULL] ktest: Updates for 6.9


Linus,

ktest updates for v6.9:

- Allow variables to contain variables. This makes the shell commands
  have a bit more flexibility to reuse existing variables.

- Have make_warnings_file in build-only mode require limited variables

  The make_warnings_file test will create a file with all existing
  warnings (which can be used to compare against in builds with
  new commits). Add it to the build-only list that doesn't require
  other variables (like how to reset a machine), as the make_warnings_file
  makes the most sense on build only tests.


Please pull the latest ktest-v6.9 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest.git
ktest-v6.9

Tag SHA1: aeafd5e2cbb670b6175ea7dc079b10920037f98d
Head SHA1: 07283c1873a4d0eaa0e822536881bfdaea853910


Ricardo B. Marliere (1):
      ktest: force $buildonly = 1 for 'make_warnings_file' test type

Steven Rostedt (1):
      ktest.pl: Process variables within variables

----
 tools/testing/ktest/ktest.pl | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)
---------------------------
diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index 829f5bdfd2e4..eb31cd9c977b 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -792,13 +792,13 @@ sub process_variables {
     my $retval = "";
 
     # We want to check for '\', and it is just easier
-    # to check the previous characet of '$' and not need
+    # to check the previous character of '$' and not need
     # to worry if '$' is the first character. By adding
     # a space to $value, we can just check [^\\]\$ and
     # it will still work.
     $value = " $value";
 
-    while ($value =~ /(.*?[^\\])\$\{(.*?)\}(.*)/) {
+    while ($value =~ /(.*?[^\\])\$\{([^\{]*?)\}(.*)/) {
 	my $begin = $1;
 	my $var = $2;
 	my $end = $3;
@@ -818,16 +818,20 @@ sub process_variables {
 	    # we simple convert to 0
 	    $retval = "${retval}0";
 	} else {
-	    # put back the origin piece.
-	    $retval = "$retval\$\{$var\}";
+	    # put back the origin piece, but with $#### to not reprocess it
+	    $retval = "$retval\$####\{$var\}";
 	    # This could be an option that is used later, save
 	    # it so we don't warn if this option is not one of
 	    # ktests options.
 	    $used_options{$var} = 1;
 	}
-	$value = $end;
+	$value = "$retval$end";
+	$retval = "";
     }
-    $retval = "$retval$value";
+    $retval = $value;
+
+    # Convert the saved variables with $####{var} back to ${var}
+    $retval =~ s/\$####/\$/g;
 
     # remove the space added in the beginning
     $retval =~ s/ //;
@@ -843,6 +847,7 @@ sub set_value {
     if ($lvalue =~ /^(TEST|BISECT|CONFIG_BISECT)_TYPE(\[.*\])?$/ &&
 	$prvalue !~ /^(config_|)bisect$/ &&
 	$prvalue !~ /^build$/ &&
+	$prvalue !~ /^make_warnings_file$/ &&
 	$buildonly) {
 
 	# Note if a test is something other than build, then we