[LTP] [PATCH v5 0/6] lib: LTP_DEBUG cleanup

[LTP] [PATCH v5 0/6] lib: LTP_DEBUG cleanup

[Petr Vorel]

Changes v4->v5:
* New commit "lib: Print TCONF on LTP_REPRODUCIBLE_OUTPUT=1"
  (it can be squashed, but I wanted to point this out and get Martin's ack)
* Fix missing new lines in help (AI)
* Remove wrongly stated TWARN (error on code on master)
* Use single fprintf (Li)

Link to v5:
https://lore.kernel.org/ltp/20260422141234.632195-1-pvorel@suse.cz/T/#t
https://patchwork.ozlabs.org/project/ltp/list/?series=501017&state=*

Petr Vorel (6):
  lib: Ignore empty LTP_ENABLE_DEBUG
  lib: Rename variable LTP_ENABLE_DEBUG => LTP_DEBUG
  lib: Prefer LTP_DEBUG over -D
  doc: newlib_tests: Update debugging parameters
  lib: Merge functionality of LTP_QUIET into LTP_REPRODUCIBLE_OUTPUT
  lib: Print TCONF on LTP_REPRODUCIBLE_OUTPUT=1

 doc/developers/debugging.rst     |  6 ++--
 doc/old/C-Test-API.asciidoc      |  4 +--
 doc/users/setup_tests.rst        |  9 +++---
 lib/newlib_tests/tst_res_flags.c |  2 +-
 lib/tst_test.c                   | 49 +++++++++++++-------------------
 5 files changed, 31 insertions(+), 39 deletions(-)

-- 
2.53.0


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[LTP] [PATCH v5 1/6] lib: Ignore empty LTP_ENABLE_DEBUG

[Petr Vorel]

Empty LTP_ENABLE_DEBUG environment variable should be just ignored.

This fixes warning:
LTP_ENABLE_DEBUG= ./test05
tst_test.c:1454: TWARN: Invalid LTP_ENABLE_DEBUG value:

Fixes: e434de62b4 ("lib: Extend LTP_ENABLE_DEBUG to support verbosity levels")
Reviewed-by: Li Wang <liwang@redhat.com>
Reviewed-by: Andrea Cervesato <andrea.cervesato@suse.com>
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 lib/tst_test.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/tst_test.c b/lib/tst_test.c
index 26f6510a0a..229da669fa 100644
--- a/lib/tst_test.c
+++ b/lib/tst_test.c
@@ -1445,13 +1445,13 @@ static void do_setup(int argc, char *argv[])
 
 	parse_opts(argc, argv);
 
-	if (tdebug_env && !context->tdebug) {
+	if (tdebug_env && *tdebug_env && !context->tdebug) {
 		if (!strcmp(tdebug_env, "2"))
 			context->tdebug = 2;
 		else if (!strcmp(tdebug_env, "1") || !strcmp(tdebug_env, "y"))
 			context->tdebug = 1;
 		else
-			tst_res(TWARN, "Invalid LTP_ENABLE_DEBUG value: %s", tdebug_env);
+			tst_res(TWARN, "Invalid LTP_ENABLE_DEBUG value: '%s'", tdebug_env);
 
 		if (context->tdebug)
 			tst_res(TINFO, "Enabling debug info (level %d)", context->tdebug);
-- 
2.53.0


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Re: [LTP] lib: Ignore empty LTP_ENABLE_DEBUG

[linuxtestproject.agent]

Hi Petr,

--- [PATCH 5/6] ---

On 2026-04-23, Petr Vorel wrote:
> lib: Merge functionality of LTP_QUIET into LTP_REPRODUCIBLE_OUTPUT

> +     - When set to ``1`` or ``y`` uppress printing TCONF, TINFO and TDEBUG

s/uppress/suppress/

(The typo is carried into patch 6/6 as well.)

---
Note:

Our agent completed the review of the patch. The agent can sometimes
produce false positives although often its findings are genuine. If you
find issues with the review, please comment this email or ignore the
suggestions.

Regards,
LTP AI Reviewer

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[LTP] [PATCH v5 2/6] lib: Rename variable LTP_ENABLE_DEBUG => LTP_DEBUG

[Petr Vorel]

1) LTP_DEBUG is shorter to write.
2) Enable is usually meant as boolean (on/off), that hides possible 2
value even more.

Reviewed-by: Li Wang <liwang@redhat.com>
Reviewed-by: Andrea Cervesato <andrea.cervesato@suse.com>
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 doc/developers/debugging.rst     | 2 +-
 doc/old/C-Test-API.asciidoc      | 2 +-
 doc/users/setup_tests.rst        | 2 +-
 lib/newlib_tests/tst_res_flags.c | 2 +-
 lib/tst_test.c                   | 6 +++---
 5 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/doc/developers/debugging.rst b/doc/developers/debugging.rst
index 52f881c5c8..36dda0d90f 100644
--- a/doc/developers/debugging.rst
+++ b/doc/developers/debugging.rst
@@ -9,7 +9,7 @@ Debug messages
 --------------
 
 The LTP framework supports ``TDEBUG`` flag test debug messages. These
-messages can be enabled using the ``-D[1,2]`` parameter or setting ``LTP_ENABLE_DEBUG=1,2``
+messages can be enabled using the ``-D[1,2]`` parameter or setting ``LTP_DEBUG=1,2``
 environment variable (see :doc:`../users/setup_tests`).
 
 The ``-D`` parameter also supports the following verbosity levels:
diff --git a/doc/old/C-Test-API.asciidoc b/doc/old/C-Test-API.asciidoc
index 44cc4e863b..7c5ad923dd 100644
--- a/doc/old/C-Test-API.asciidoc
+++ b/doc/old/C-Test-API.asciidoc
@@ -232,7 +232,7 @@ Printf-like function to report test result, it's mostly used with ttype:
 | 'TPASS'  | Test has passed.
 | 'TFAIL'  | Test has failed.
 | 'TINFO'  | General message.
-| 'TDEBUG' | Debug message (new C API only, printed with '-D' or via 'LTP_ENABLE_DEBUG=1' or 'y'
+| 'TDEBUG' | Debug message (new C API only, printed with '-D' or via 'LTP_DEBUG=1' or 'y'
              environment variable), only for messages which would be too verbose for normal run.
 | 'TWARN'  | Something went wrong but we decided to continue. Mostly used in cleanup functions.
 |==============================
diff --git a/doc/users/setup_tests.rst b/doc/users/setup_tests.rst
index 95d4d9e380..a42c397feb 100644
--- a/doc/users/setup_tests.rst
+++ b/doc/users/setup_tests.rst
@@ -90,7 +90,7 @@ users.
      - Disable running test cleanup (defined in ``TST_CLEANUP``).
        Shell API only.
 
-   * - LTP_ENABLE_DEBUG
+   * - LTP_DEBUG
      - Enable debug info (value ``1`` (``y``) or ``2`` for more verbose level).
        Equivalent of ``-D`` parameter.
 
diff --git a/lib/newlib_tests/tst_res_flags.c b/lib/newlib_tests/tst_res_flags.c
index 21637a472b..9993d0f87d 100644
--- a/lib/newlib_tests/tst_res_flags.c
+++ b/lib/newlib_tests/tst_res_flags.c
@@ -21,7 +21,7 @@ static struct tcase {
 	{FLAG(TCONF)},
 	{FLAG(TWARN)},
 	{FLAG(TINFO)},
-	{FLAG(TDEBUG), " (printed only with -D[1,2] or LTP_ENABLE_DEBUG=1,2)"},
+	{FLAG(TDEBUG), " (printed only with -D[1,2] or LTP_DEBUG=1,2)"},
 };
 
 static void do_cleanup(void)
diff --git a/lib/tst_test.c b/lib/tst_test.c
index 229da669fa..c79cabcd7a 100644
--- a/lib/tst_test.c
+++ b/lib/tst_test.c
@@ -675,7 +675,7 @@ static void print_help(void)
 	fprintf(stderr, "LTP_COLORIZE_OUTPUT      Force colorized output behaviour (y/1 always, n/0: never)\n");
 	fprintf(stderr, "LTP_DEV                  Path to the block device to be used (for .needs_device)\n");
 	fprintf(stderr, "LTP_DEV_FS_TYPE          Filesystem used for testing (default: %s)\n", DEFAULT_FS_TYPE);
-	fprintf(stderr, "LTP_ENABLE_DEBUG         Print debug messages (set 1(y) or 2)\n");
+	fprintf(stderr, "LTP_DEBUG                Print debug messages (set 1(y) or 2)\n");
 	fprintf(stderr, "LTP_REPRODUCIBLE_OUTPUT  Values 1 or y discard the actual content of the messages printed by the test\n");
 	fprintf(stderr, "LTP_QUIET                Values 1 or y will suppress printing TCONF, TWARN, TINFO, and TDEBUG messages\n");
 	fprintf(stderr, "LTP_SINGLE_FS_TYPE       Specifies filesystem instead all supported (for .all_filesystems)\n");
@@ -1400,7 +1400,7 @@ bool tst_cmd_present(const char *cmd)
 
 static void do_setup(int argc, char *argv[])
 {
-	char *tdebug_env = getenv("LTP_ENABLE_DEBUG");
+	char *tdebug_env = getenv("LTP_DEBUG");
 	char *reproducible_env = getenv("LTP_REPRODUCIBLE_OUTPUT");
 	char *quiet_env = getenv("LTP_QUIET");
 
@@ -1451,7 +1451,7 @@ static void do_setup(int argc, char *argv[])
 		else if (!strcmp(tdebug_env, "1") || !strcmp(tdebug_env, "y"))
 			context->tdebug = 1;
 		else
-			tst_res(TWARN, "Invalid LTP_ENABLE_DEBUG value: '%s'", tdebug_env);
+			tst_res(TWARN, "Invalid LTP_DEBUG value: '%s'", tdebug_env);
 
 		if (context->tdebug)
 			tst_res(TINFO, "Enabling debug info (level %d)", context->tdebug);
-- 
2.53.0


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Mailing list info: https://lists.linux.it/listinfo/ltp

[LTP] [PATCH v5 3/6] lib: Prefer LTP_DEBUG over -D

[Petr Vorel]

Environment variable has usually higher preference than getopt.
This includes disabling debugging even on -D:
LTP_DEBUG= ./test05 -D2 means debugging disabled.

Also reduce duplicity of "Enabling debug info (level %d)" message and
document that on -h and developers/debugging.rst.

Fixes: e434de62b4 ("lib: Extend LTP_ENABLE_DEBUG to support verbosity levels")
Reviewed-by: Li Wang <wangli.ahau@gmail.com>
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 doc/developers/debugging.rst |  2 ++
 lib/tst_test.c               | 25 +++++++++++--------------
 2 files changed, 13 insertions(+), 14 deletions(-)

diff --git a/doc/developers/debugging.rst b/doc/developers/debugging.rst
index 36dda0d90f..4e162068b4 100644
--- a/doc/developers/debugging.rst
+++ b/doc/developers/debugging.rst
@@ -19,6 +19,8 @@ The ``-D`` parameter also supports the following verbosity levels:
 
 Suppress all debug logs if no '-D' flag passed (default behavior).
 
+``LTP_DEBUG`` has higher preference than ``-D``.
+
 Tracing and debugging syscalls
 ------------------------------
 
diff --git a/lib/tst_test.c b/lib/tst_test.c
index c79cabcd7a..12f7489d4e 100644
--- a/lib/tst_test.c
+++ b/lib/tst_test.c
@@ -654,11 +654,11 @@ static struct option {
 	char *optstr;
 	char *help;
 } options[] = {
-	{"h",  "-h       Prints this help"},
-	{"i:", "-i n     Execute test n times"},
-	{"I:", "-I x     Execute test for n seconds"},
-	{"D::", "-D[1,2]  Prints debug information"},
-	{"V",  "-V       Prints LTP version"},
+	{"h",  "-h        Prints this help"},
+	{"i:", "-i n      Execute test n times"},
+	{"I:", "-I x      Execute test for n seconds"},
+	{"D::", "-D[1,2]  Prints debug information (can be overwritten by LTP_DEBUG)"},
+	{"V",  "-V        Prints LTP version"},
 };
 
 static void print_help(void)
@@ -825,13 +825,9 @@ static void parse_opts(int argc, char *argv[])
 			tst_brk(TBROK, "Invalid option");
 		break;
 		case 'D':
-			if (optarg)
-				context->tdebug = SAFE_STRTOL(optarg, 1, 2);
-			else
-				context->tdebug = 1;
-
-			if (context->tdebug)
-				tst_res(TINFO, "Enabling debug info (level %d)", context->tdebug);
+			if (getenv("LTP_DEBUG"))
+				break;
+			context->tdebug = optarg ? SAFE_STRTOL(optarg, 1, 2) : 1;
 		break;
 		case 'h':
 			print_help();
@@ -1453,10 +1449,11 @@ static void do_setup(int argc, char *argv[])
 		else
 			tst_res(TWARN, "Invalid LTP_DEBUG value: '%s'", tdebug_env);
 
-		if (context->tdebug)
-			tst_res(TINFO, "Enabling debug info (level %d)", context->tdebug);
 	}
 
+	if (context->tdebug)
+		tst_res(TINFO, "Enabling debug info (level %d)", context->tdebug);
+
 	if (tst_test->needs_kconfigs && tst_kconfig_check(tst_test->needs_kconfigs))
 		tst_brk(TCONF, "Aborting due to unsuitable kernel config, see above!");
 
-- 
2.53.0


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[LTP] [PATCH v5 4/6] doc: newlib_tests: Update debugging parameters

[Petr Vorel]

* Improve wording in doc/developers/debugging.rst. Not mention 'y'
  (enough for user is to know 1 and 2 + 'y' is mentioned at -h).
* Mention all -D and LTP_DEBUG parameters in library test.
* Keep info about the levels in developers/debugging.rst, link page in
  user/setup_tests.
* Remove values from old doc (we have enough places to sync on changes,
  let's drop the old doc).

Follow-up: b415265cb3 ("doc/setup_tests: Document LTP_ENABLE_DEBUG=2")
Reviewed-by: Andrea Cervesato <andrea.cervesato@suse.com>
Reviewed-by: Li Wang <wangli.ahau@gmail.com>
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 doc/developers/debugging.rst     | 4 ++--
 doc/old/C-Test-API.asciidoc      | 4 ++--
 doc/users/setup_tests.rst        | 2 +-
 lib/newlib_tests/tst_res_flags.c | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/doc/developers/debugging.rst b/doc/developers/debugging.rst
index 4e162068b4..6062fdece0 100644
--- a/doc/developers/debugging.rst
+++ b/doc/developers/debugging.rst
@@ -9,10 +9,10 @@ Debug messages
 --------------
 
 The LTP framework supports ``TDEBUG`` flag test debug messages. These
-messages can be enabled using the ``-D[1,2]`` parameter or setting ``LTP_DEBUG=1,2``
+messages can be enabled using the ``-D`` parameter or setting ``LTP_DEBUG``
 environment variable (see :doc:`../users/setup_tests`).
 
-The ``-D`` parameter also supports the following verbosity levels:
+Both ``-D`` parameter and ``LTP_DEBUG`` support the following verbosity levels:
 
   ``-D1`` (or ``-D``): Enable debug logs for the test process only.
   ``-D2``: Enable verbose debug logs for both the test and library processes.
diff --git a/doc/old/C-Test-API.asciidoc b/doc/old/C-Test-API.asciidoc
index 7c5ad923dd..38dae98663 100644
--- a/doc/old/C-Test-API.asciidoc
+++ b/doc/old/C-Test-API.asciidoc
@@ -232,8 +232,8 @@ Printf-like function to report test result, it's mostly used with ttype:
 | 'TPASS'  | Test has passed.
 | 'TFAIL'  | Test has failed.
 | 'TINFO'  | General message.
-| 'TDEBUG' | Debug message (new C API only, printed with '-D' or via 'LTP_DEBUG=1' or 'y'
-             environment variable), only for messages which would be too verbose for normal run.
+| 'TDEBUG' | Debug message (new C API only, enabled via '-D' or 'LTP_DEBUG' environment variable)
+             only for messages which would be too verbose for normal run.
 | 'TWARN'  | Something went wrong but we decided to continue. Mostly used in cleanup functions.
 |==============================
 
diff --git a/doc/users/setup_tests.rst b/doc/users/setup_tests.rst
index a42c397feb..6f1d996e18 100644
--- a/doc/users/setup_tests.rst
+++ b/doc/users/setup_tests.rst
@@ -92,7 +92,7 @@ users.
 
    * - LTP_DEBUG
      - Enable debug info (value ``1`` (``y``) or ``2`` for more verbose level).
-       Equivalent of ``-D`` parameter.
+       Equivalent of the ``-D`` parameter (see :doc:`../developers/debugging`).
 
 Test specific environment variables
 -----------------------------------
diff --git a/lib/newlib_tests/tst_res_flags.c b/lib/newlib_tests/tst_res_flags.c
index 9993d0f87d..cda0970702 100644
--- a/lib/newlib_tests/tst_res_flags.c
+++ b/lib/newlib_tests/tst_res_flags.c
@@ -21,7 +21,7 @@ static struct tcase {
 	{FLAG(TCONF)},
 	{FLAG(TWARN)},
 	{FLAG(TINFO)},
-	{FLAG(TDEBUG), " (printed only with -D[1,2] or LTP_DEBUG=1,2)"},
+	{FLAG(TDEBUG), " (printed only with -D[1,2] or LTP_DEBUG=1(y),2)"},
 };
 
 static void do_cleanup(void)
-- 
2.53.0


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[LTP] [PATCH v5 5/6] lib: Merge functionality of LTP_QUIET into LTP_REPRODUCIBLE_OUTPUT

[Petr Vorel]

LTP_REPRODUCIBLE_OUTPUT=1 environment variable was added in 5894abc5f to
help valgrind to use LTP for testing. It discards the actual content of
the messages printed by the test (removes everything after printing
TINFO/TPASS/TFAIL/... flag).

Later LTP_QUIET=1 was added which suppresses printing TCONF, TINFO, and
TDEBUG messages.

Valgrind project uses both variables but no need to handle them
separately. Therefore merge functionality of LTP_QUIET into
LTP_REPRODUCIBLE_OUTPUT.

LTP_QUIET was not even documented in HTML doc.

Also fix help description, because TWARN was not skipped, although doc
claimed to do.

Implements: https://github.com/linux-test-project/ltp/issues/1306
Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
Changes v4->v5:
* Remove wrongly stated TWARN (error on code on master)
* Fix missing new lines in help (AI)
* Use single fprintf (Li)

 doc/users/setup_tests.rst |  5 +++--
 lib/tst_test.c            | 16 +++++-----------
 2 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/doc/users/setup_tests.rst b/doc/users/setup_tests.rst
index 6f1d996e18..491a5b003a 100644
--- a/doc/users/setup_tests.rst
+++ b/doc/users/setup_tests.rst
@@ -43,8 +43,9 @@ users.
        Shell language: ``TST_NEEDS_DEVICE=1``.
 
    * - LTP_REPRODUCIBLE_OUTPUT
-     - When set to ``1`` or ``y`` discards the actual content of the messages
-       printed by the test (suitable for a reproducible output).
+     - When set to ``1`` or ``y`` uppress printing TCONF, TINFO and TDEBUG
+       messages and discards the actual content of the other messages printed
+       by the test (suitable for a reproducible output).
 
    * - LTP_SINGLE_FS_TYPE
      - Specifies single filesystem to run the test on instead all supported
diff --git a/lib/tst_test.c b/lib/tst_test.c
index 12f7489d4e..a0b55049ff 100644
--- a/lib/tst_test.c
+++ b/lib/tst_test.c
@@ -68,7 +68,6 @@ static int iterations = 1;
 static float duration = -1;
 static float timeout_mul = -1;
 static int reproducible_output;
-static int quiet_output;
 
 struct context {
 	int32_t lib_pid;
@@ -307,7 +306,7 @@ static void print_result(const char *file, const int lineno, int ttype,
 		res = "TBROK";
 	break;
 	case TCONF:
-		if (quiet_output)
+		if (reproducible_output)
 			return;
 		res = "TCONF";
 	break;
@@ -315,12 +314,12 @@ static void print_result(const char *file, const int lineno, int ttype,
 		res = "TWARN";
 	break;
 	case TINFO:
-		if (quiet_output)
+		if (reproducible_output)
 			return;
 		res = "TINFO";
 	break;
 	case TDEBUG:
-		if (quiet_output)
+		if (reproducible_output)
 			return;
 		res = "TDEBUG";
 	break;
@@ -676,8 +675,8 @@ static void print_help(void)
 	fprintf(stderr, "LTP_DEV                  Path to the block device to be used (for .needs_device)\n");
 	fprintf(stderr, "LTP_DEV_FS_TYPE          Filesystem used for testing (default: %s)\n", DEFAULT_FS_TYPE);
 	fprintf(stderr, "LTP_DEBUG                Print debug messages (set 1(y) or 2)\n");
-	fprintf(stderr, "LTP_REPRODUCIBLE_OUTPUT  Values 1 or y discard the actual content of the messages printed by the test\n");
-	fprintf(stderr, "LTP_QUIET                Values 1 or y will suppress printing TCONF, TWARN, TINFO, and TDEBUG messages\n");
+	fprintf(stderr, "LTP_REPRODUCIBLE_OUTPUT  Values 1 or y suppress printing TCONF, TINFO and TDEBUG messages and\n"
+			"                         discards the actual content of all other messages\n");
 	fprintf(stderr, "LTP_SINGLE_FS_TYPE       Specifies filesystem instead all supported (for .all_filesystems)\n");
 	fprintf(stderr, "LTP_FORCE_SINGLE_FS_TYPE Testing only. The same as LTP_SINGLE_FS_TYPE but ignores test skiplist.\n");
 	fprintf(stderr, "LTP_TIMEOUT_MUL          Timeout multiplier (must be a number >=1)\n");
@@ -1398,7 +1397,6 @@ static void do_setup(int argc, char *argv[])
 {
 	char *tdebug_env = getenv("LTP_DEBUG");
 	char *reproducible_env = getenv("LTP_REPRODUCIBLE_OUTPUT");
-	char *quiet_env = getenv("LTP_QUIET");
 
 	if (!tst_test)
 		tst_brk(TBROK, "No tests to run");
@@ -1429,10 +1427,6 @@ static void do_setup(int argc, char *argv[])
 	    (!strcmp(reproducible_env, "1") || !strcmp(reproducible_env, "y")))
 		reproducible_output = 1;
 
-	if (quiet_env &&
-	    (!strcmp(quiet_env, "1") || !strcmp(quiet_env, "y")))
-		quiet_output = 1;
-
 	assert_test_fn();
 
 	TCID = tcid = get_tcid(argv);
-- 
2.53.0


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Re: [LTP] [PATCH v5 5/6] lib: Merge functionality of LTP_QUIET into LTP_REPRODUCIBLE_OUTPUT

[Petr Vorel]

Hi,

[ Cc valgrind-developers ML, which I should have done when sending the patchset ].

Kind regards,
Petr

> LTP_REPRODUCIBLE_OUTPUT=1 environment variable was added in 5894abc5f to
> help valgrind to use LTP for testing. It discards the actual content of
> the messages printed by the test (removes everything after printing
> TINFO/TPASS/TFAIL/... flag).

> Later LTP_QUIET=1 was added which suppresses printing TCONF, TINFO, and
> TDEBUG messages.

> Valgrind project uses both variables but no need to handle them
> separately. Therefore merge functionality of LTP_QUIET into
> LTP_REPRODUCIBLE_OUTPUT.

> LTP_QUIET was not even documented in HTML doc.

> Also fix help description, because TWARN was not skipped, although doc
> claimed to do.

> Implements: https://github.com/linux-test-project/ltp/issues/1306
> Signed-off-by: Petr Vorel <pvorel@suse.cz>
> ---
> Changes v4->v5:
> * Remove wrongly stated TWARN (error on code on master)
> * Fix missing new lines in help (AI)
> * Use single fprintf (Li)

>  doc/users/setup_tests.rst |  5 +++--
>  lib/tst_test.c            | 16 +++++-----------
>  2 files changed, 8 insertions(+), 13 deletions(-)

> diff --git a/doc/users/setup_tests.rst b/doc/users/setup_tests.rst
> index 6f1d996e18..491a5b003a 100644
> --- a/doc/users/setup_tests.rst
> +++ b/doc/users/setup_tests.rst
> @@ -43,8 +43,9 @@ users.
>         Shell language: ``TST_NEEDS_DEVICE=1``.

>     * - LTP_REPRODUCIBLE_OUTPUT
> -     - When set to ``1`` or ``y`` discards the actual content of the messages
> -       printed by the test (suitable for a reproducible output).
> +     - When set to ``1`` or ``y`` uppress printing TCONF, TINFO and TDEBUG
> +       messages and discards the actual content of the other messages printed
> +       by the test (suitable for a reproducible output).

>     * - LTP_SINGLE_FS_TYPE
>       - Specifies single filesystem to run the test on instead all supported
> diff --git a/lib/tst_test.c b/lib/tst_test.c
> index 12f7489d4e..a0b55049ff 100644
> --- a/lib/tst_test.c
> +++ b/lib/tst_test.c
> @@ -68,7 +68,6 @@ static int iterations = 1;
>  static float duration = -1;
>  static float timeout_mul = -1;
>  static int reproducible_output;
> -static int quiet_output;

>  struct context {
>  	int32_t lib_pid;
> @@ -307,7 +306,7 @@ static void print_result(const char *file, const int lineno, int ttype,
>  		res = "TBROK";
>  	break;
>  	case TCONF:
> -		if (quiet_output)
> +		if (reproducible_output)
>  			return;
>  		res = "TCONF";
>  	break;
> @@ -315,12 +314,12 @@ static void print_result(const char *file, const int lineno, int ttype,
>  		res = "TWARN";
>  	break;
>  	case TINFO:
> -		if (quiet_output)
> +		if (reproducible_output)
>  			return;
>  		res = "TINFO";
>  	break;
>  	case TDEBUG:
> -		if (quiet_output)
> +		if (reproducible_output)
>  			return;
>  		res = "TDEBUG";
>  	break;
> @@ -676,8 +675,8 @@ static void print_help(void)
>  	fprintf(stderr, "LTP_DEV                  Path to the block device to be used (for .needs_device)\n");
>  	fprintf(stderr, "LTP_DEV_FS_TYPE          Filesystem used for testing (default: %s)\n", DEFAULT_FS_TYPE);
>  	fprintf(stderr, "LTP_DEBUG                Print debug messages (set 1(y) or 2)\n");
> -	fprintf(stderr, "LTP_REPRODUCIBLE_OUTPUT  Values 1 or y discard the actual content of the messages printed by the test\n");
> -	fprintf(stderr, "LTP_QUIET                Values 1 or y will suppress printing TCONF, TWARN, TINFO, and TDEBUG messages\n");
> +	fprintf(stderr, "LTP_REPRODUCIBLE_OUTPUT  Values 1 or y suppress printing TCONF, TINFO and TDEBUG messages and\n"
> +			"                         discards the actual content of all other messages\n");
>  	fprintf(stderr, "LTP_SINGLE_FS_TYPE       Specifies filesystem instead all supported (for .all_filesystems)\n");
>  	fprintf(stderr, "LTP_FORCE_SINGLE_FS_TYPE Testing only. The same as LTP_SINGLE_FS_TYPE but ignores test skiplist.\n");
>  	fprintf(stderr, "LTP_TIMEOUT_MUL          Timeout multiplier (must be a number >=1)\n");
> @@ -1398,7 +1397,6 @@ static void do_setup(int argc, char *argv[])
>  {
>  	char *tdebug_env = getenv("LTP_DEBUG");
>  	char *reproducible_env = getenv("LTP_REPRODUCIBLE_OUTPUT");
> -	char *quiet_env = getenv("LTP_QUIET");

>  	if (!tst_test)
>  		tst_brk(TBROK, "No tests to run");
> @@ -1429,10 +1427,6 @@ static void do_setup(int argc, char *argv[])
>  	    (!strcmp(reproducible_env, "1") || !strcmp(reproducible_env, "y")))
>  		reproducible_output = 1;

> -	if (quiet_env &&
> -	    (!strcmp(quiet_env, "1") || !strcmp(quiet_env, "y")))
> -		quiet_output = 1;
> -
>  	assert_test_fn();

>  	TCID = tcid = get_tcid(argv);

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Re: [LTP] [PATCH v5 5/6] lib: Merge functionality of LTP_QUIET into LTP_REPRODUCIBLE_OUTPUT

[Li Wang]

Hi Petr,

Reviewed-by: Li Wang <li.wang@linux.dev>

Tiny note: it would be appreciated if your replace all the reviewed-by
with my new account in this patchset.

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Li Wang

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Re: [LTP] [Valgrind-developers] [PATCH v5 5/6] lib: Merge functionality of LTP_QUIET into LTP_REPRODUCIBLE_OUTPUT

[Petr Vorel]

Hi Li,

> Hi Petr,

> Reviewed-by: Li Wang <li.wang@linux.dev>

> Tiny note: it would be appreciated if your replace all the reviewed-by
> with my new account in this patchset.

Sure, I can do it. I thought they were added as part of your work for Red Hat
(added in March 27, 2026), so that it's kind of RH credit :).

BTW the patch needs fix below (find by AI review), but posted to the 1st commit.

Kind regards,
Petr

diff --git doc/users/setup_tests.rst doc/users/setup_tests.rst
index 491a5b003a..e8f6950fff 100644
--- doc/users/setup_tests.rst
+++ doc/users/setup_tests.rst
@@ -43,7 +43,7 @@ users.
        Shell language: ``TST_NEEDS_DEVICE=1``.
 
    * - LTP_REPRODUCIBLE_OUTPUT
-     - When set to ``1`` or ``y`` uppress printing TCONF, TINFO and TDEBUG
+     - When set to ``1`` or ``y`` suppress printing TCONF, TINFO and TDEBUG
        messages and discards the actual content of the other messages printed
        by the test (suitable for a reproducible output).
 

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Re: [LTP] [PATCH v5 5/6] lib: Merge functionality of LTP_QUIET into LTP_REPRODUCIBLE_OUTPUT

[Petr Vorel]

Hi Martin,

any change I'd get your explicit ack to this change
(your Acked-by: or Reviewed-by: ?). It should be safe for Valgrind, but better
you to double check.

https://lore.kernel.org/ltp/20260423084123.657690-6-pvorel@suse.cz/
https://patchwork.ozlabs.org/project/ltp/patch/20260423084123.657690-7-pvorel@suse.cz/

> LTP_REPRODUCIBLE_OUTPUT=1 environment variable was added in 5894abc5f to
> help valgrind to use LTP for testing. It discards the actual content of
> the messages printed by the test (removes everything after printing
> TINFO/TPASS/TFAIL/... flag).

> Later LTP_QUIET=1 was added which suppresses printing TCONF, TINFO, and
> TDEBUG messages.

> Valgrind project uses both variables but no need to handle them
> separately. Therefore merge functionality of LTP_QUIET into
> LTP_REPRODUCIBLE_OUTPUT.

> LTP_QUIET was not even documented in HTML doc.

> Also fix help description, because TWARN was not skipped, although doc
> claimed to do.

> Implements: https://github.com/linux-test-project/ltp/issues/1306
> Signed-off-by: Petr Vorel <pvorel@suse.cz>
> ---
> Changes v4->v5:
> * Remove wrongly stated TWARN (error on code on master)
> * Fix missing new lines in help (AI)
> * Use single fprintf (Li)

>  doc/users/setup_tests.rst |  5 +++--
>  lib/tst_test.c            | 16 +++++-----------
>  2 files changed, 8 insertions(+), 13 deletions(-)

> diff --git a/doc/users/setup_tests.rst b/doc/users/setup_tests.rst
> index 6f1d996e18..491a5b003a 100644
> --- a/doc/users/setup_tests.rst
> +++ b/doc/users/setup_tests.rst
> @@ -43,8 +43,9 @@ users.
>         Shell language: ``TST_NEEDS_DEVICE=1``.

>     * - LTP_REPRODUCIBLE_OUTPUT
> -     - When set to ``1`` or ``y`` discards the actual content of the messages
> -       printed by the test (suitable for a reproducible output).
> +     - When set to ``1`` or ``y`` uppress printing TCONF, TINFO and TDEBUG
Also AI found missing 's': s/uppress/suppress/
I'll fix that before merging.

Kind regards,
Petr

> +       messages and discards the actual content of the other messages printed
> +       by the test (suitable for a reproducible output).
...

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[LTP] [PATCH v5 6/6] lib: Print TCONF on LTP_REPRODUCIBLE_OUTPUT=1

[Petr Vorel]

It'll be better for Valgrind developers to know, that test is skipped.
TCONF is not printed that often and because output of the message is
trimmed, it will not be that disruptive.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
New in v5 (it can be squashed, but I wanted to point this out and get Martin's ack).

 doc/users/setup_tests.rst | 6 +++---
 lib/tst_test.c            | 4 +---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/doc/users/setup_tests.rst b/doc/users/setup_tests.rst
index 491a5b003a..43573c8fb1 100644
--- a/doc/users/setup_tests.rst
+++ b/doc/users/setup_tests.rst
@@ -43,9 +43,9 @@ users.
        Shell language: ``TST_NEEDS_DEVICE=1``.
 
    * - LTP_REPRODUCIBLE_OUTPUT
-     - When set to ``1`` or ``y`` uppress printing TCONF, TINFO and TDEBUG
-       messages and discards the actual content of the other messages printed
-       by the test (suitable for a reproducible output).
+     - When set to ``1`` or ``y`` uppress printing TINFO and TDEBUG messages
+       and discards the actual content of the other messages printed by the
+       test (suitable for a reproducible output).
 
    * - LTP_SINGLE_FS_TYPE
      - Specifies single filesystem to run the test on instead all supported
diff --git a/lib/tst_test.c b/lib/tst_test.c
index a0b55049ff..469a3f6b65 100644
--- a/lib/tst_test.c
+++ b/lib/tst_test.c
@@ -306,8 +306,6 @@ static void print_result(const char *file, const int lineno, int ttype,
 		res = "TBROK";
 	break;
 	case TCONF:
-		if (reproducible_output)
-			return;
 		res = "TCONF";
 	break;
 	case TWARN:
@@ -675,7 +673,7 @@ static void print_help(void)
 	fprintf(stderr, "LTP_DEV                  Path to the block device to be used (for .needs_device)\n");
 	fprintf(stderr, "LTP_DEV_FS_TYPE          Filesystem used for testing (default: %s)\n", DEFAULT_FS_TYPE);
 	fprintf(stderr, "LTP_DEBUG                Print debug messages (set 1(y) or 2)\n");
-	fprintf(stderr, "LTP_REPRODUCIBLE_OUTPUT  Values 1 or y suppress printing TCONF, TINFO and TDEBUG messages and\n"
+	fprintf(stderr, "LTP_REPRODUCIBLE_OUTPUT  Values 1 or y suppress printing TINFO and TDEBUG messages and\n"
 			"                         discards the actual content of all other messages\n");
 	fprintf(stderr, "LTP_SINGLE_FS_TYPE       Specifies filesystem instead all supported (for .all_filesystems)\n");
 	fprintf(stderr, "LTP_FORCE_SINGLE_FS_TYPE Testing only. The same as LTP_SINGLE_FS_TYPE but ignores test skiplist.\n");
-- 
2.53.0


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Re: [LTP] [PATCH v5 6/6] lib: Print TCONF on LTP_REPRODUCIBLE_OUTPUT=1

[Petr Vorel]

Hi,

[ Cc valgrind-developers ML, which I should have done when sending the patchset ].

Kind regards,
Petr

> It'll be better for Valgrind developers to know, that test is skipped.
> TCONF is not printed that often and because output of the message is
> trimmed, it will not be that disruptive.

> Signed-off-by: Petr Vorel <pvorel@suse.cz>
> ---
> New in v5 (it can be squashed, but I wanted to point this out and get Martin's ack).

>  doc/users/setup_tests.rst | 6 +++---
>  lib/tst_test.c            | 4 +---
>  2 files changed, 4 insertions(+), 6 deletions(-)

> diff --git a/doc/users/setup_tests.rst b/doc/users/setup_tests.rst
> index 491a5b003a..43573c8fb1 100644
> --- a/doc/users/setup_tests.rst
> +++ b/doc/users/setup_tests.rst
> @@ -43,9 +43,9 @@ users.
>         Shell language: ``TST_NEEDS_DEVICE=1``.

>     * - LTP_REPRODUCIBLE_OUTPUT
> -     - When set to ``1`` or ``y`` uppress printing TCONF, TINFO and TDEBUG
> -       messages and discards the actual content of the other messages printed
> -       by the test (suitable for a reproducible output).
> +     - When set to ``1`` or ``y`` uppress printing TINFO and TDEBUG messages
> +       and discards the actual content of the other messages printed by the
> +       test (suitable for a reproducible output).

>     * - LTP_SINGLE_FS_TYPE
>       - Specifies single filesystem to run the test on instead all supported
> diff --git a/lib/tst_test.c b/lib/tst_test.c
> index a0b55049ff..469a3f6b65 100644
> --- a/lib/tst_test.c
> +++ b/lib/tst_test.c
> @@ -306,8 +306,6 @@ static void print_result(const char *file, const int lineno, int ttype,
>  		res = "TBROK";
>  	break;
>  	case TCONF:
> -		if (reproducible_output)
> -			return;
>  		res = "TCONF";
>  	break;
>  	case TWARN:
> @@ -675,7 +673,7 @@ static void print_help(void)
>  	fprintf(stderr, "LTP_DEV                  Path to the block device to be used (for .needs_device)\n");
>  	fprintf(stderr, "LTP_DEV_FS_TYPE          Filesystem used for testing (default: %s)\n", DEFAULT_FS_TYPE);
>  	fprintf(stderr, "LTP_DEBUG                Print debug messages (set 1(y) or 2)\n");
> -	fprintf(stderr, "LTP_REPRODUCIBLE_OUTPUT  Values 1 or y suppress printing TCONF, TINFO and TDEBUG messages and\n"
> +	fprintf(stderr, "LTP_REPRODUCIBLE_OUTPUT  Values 1 or y suppress printing TINFO and TDEBUG messages and\n"
>  			"                         discards the actual content of all other messages\n");
>  	fprintf(stderr, "LTP_SINGLE_FS_TYPE       Specifies filesystem instead all supported (for .all_filesystems)\n");
>  	fprintf(stderr, "LTP_FORCE_SINGLE_FS_TYPE Testing only. The same as LTP_SINGLE_FS_TYPE but ignores test skiplist.\n");

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Re: [LTP] [PATCH v5 6/6] lib: Print TCONF on LTP_REPRODUCIBLE_OUTPUT=1

[Li Wang]

Petr Vorel <pvorel@suse.cz> wrote:

> It'll be better for Valgrind developers to know, that test is skipped.
> TCONF is not printed that often and because output of the message is
> trimmed, it will not be that disruptive.

Fine with that:

Reviewed-by: Li Wang <li.wang@linux.dev>

-- 
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Li Wang

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Re: [LTP] [PATCH v5 6/6] lib: Print TCONF on LTP_REPRODUCIBLE_OUTPUT=1

[Petr Vorel]

Hi all,

FYI also this one needs update before merge (missing 's').

Kind regards,
Petr

+++ doc/users/setup_tests.rst
@@ -43,7 +43,7 @@ users.
        Shell language: ``TST_NEEDS_DEVICE=1``.
 
    * - LTP_REPRODUCIBLE_OUTPUT
-     - When set to ``1`` or ``y`` uppress printing TINFO and TDEBUG messages
+     - When set to ``1`` or ``y`` suppress printing TINFO and TDEBUG messages
        and discards the actual content of the other messages printed by the
        test (suitable for a reproducible output).
 

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Re: [LTP] [PATCH v5 6/6] lib: Print TCONF on LTP_REPRODUCIBLE_OUTPUT=1

[Petr Vorel]

Hi all,

FYI whole patchset merged with 'uppress' => 'suppress' fix.

Kind regards,
Petr

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Re: [LTP] [PATCH v5 0/6] lib: LTP_DEBUG cleanup

[Andrea Cervesato via ltp]

To all patch-set, feel free to merge:

Reviewed-by: Andrea Cervesato <andrea.cervesato@suse.com>

--
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SUSE QE Automation Engineer Linux
andrea.cervesato@suse.com

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