From cf9610f9116d55c5a66ef9f1faecacabd93a9322 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 24 Aug 2026 08:46:03 -0700 Subject: Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ... --- lib/kunit/backtrace-suppression-test.c | 198 +++++++++++++++++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 lib/kunit/backtrace-suppression-test.c (limited to 'lib/kunit/backtrace-suppression-test.c') diff --git a/lib/kunit/backtrace-suppression-test.c b/lib/kunit/backtrace-suppression-test.c new file mode 100644 index 000000000..7a2a59c6a --- /dev/null +++ b/lib/kunit/backtrace-suppression-test.c @@ -0,0 +1,198 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KUnit test for suppressing warning tracebacks. + * + * Copyright (C) 2024, Guenter Roeck + * Author: Guenter Roeck + */ + +#include +#include +#include +#include + +static void backtrace_suppression_test_warn_direct(struct kunit *test) +{ + if (!IS_ENABLED(CONFIG_BUG)) + kunit_skip(test, "requires CONFIG_BUG"); + + kunit_warning_suppress(test) { + WARN(1, "This backtrace should be suppressed"); + /* + * Count must be checked inside the scope; the handle + * is not accessible after the block exits. + */ + KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(test, 1); + } + KUNIT_EXPECT_FALSE(test, kunit_has_active_suppress_warning()); +} + +static noinline void trigger_backtrace_warn(void) +{ + WARN(1, "This backtrace should be suppressed"); +} + +static void backtrace_suppression_test_warn_indirect(struct kunit *test) +{ + if (!IS_ENABLED(CONFIG_BUG)) + kunit_skip(test, "requires CONFIG_BUG"); + + kunit_warning_suppress(test) { + trigger_backtrace_warn(); + KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(test, 1); + } +} + +static void backtrace_suppression_test_warn_multi(struct kunit *test) +{ + if (!IS_ENABLED(CONFIG_BUG)) + kunit_skip(test, "requires CONFIG_BUG"); + + kunit_warning_suppress(test) { + WARN(1, "This backtrace should be suppressed"); + trigger_backtrace_warn(); + KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(test, 2); + } +} + +static void backtrace_suppression_test_warn_on_direct(struct kunit *test) +{ + if (!IS_ENABLED(CONFIG_BUG)) + kunit_skip(test, "requires CONFIG_BUG"); + if (!IS_ENABLED(CONFIG_DEBUG_BUGVERBOSE) && !IS_ENABLED(CONFIG_KALLSYMS)) + kunit_skip(test, "requires CONFIG_DEBUG_BUGVERBOSE or CONFIG_KALLSYMS"); + + kunit_warning_suppress(test) { + WARN_ON(1); + KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(test, 1); + } +} + +static noinline void trigger_backtrace_warn_on(void) +{ + WARN_ON(1); +} + +static void backtrace_suppression_test_warn_on_indirect(struct kunit *test) +{ + if (!IS_ENABLED(CONFIG_BUG)) + kunit_skip(test, "requires CONFIG_BUG"); + if (!IS_ENABLED(CONFIG_DEBUG_BUGVERBOSE)) + kunit_skip(test, "requires CONFIG_DEBUG_BUGVERBOSE"); + + kunit_warning_suppress(test) { + trigger_backtrace_warn_on(); + KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(test, 1); + } +} + +static void backtrace_suppression_test_count(struct kunit *test) +{ + if (!IS_ENABLED(CONFIG_BUG)) + kunit_skip(test, "requires CONFIG_BUG"); + + kunit_warning_suppress(test) { + KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(test, 0); + + WARN(1, "suppressed"); + KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(test, 1); + + WARN(1, "suppressed again"); + KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(test, 2); + } +} + +static void backtrace_suppression_test_active_state(struct kunit *test) +{ + KUNIT_EXPECT_FALSE(test, kunit_has_active_suppress_warning()); + + kunit_warning_suppress(test) { + KUNIT_EXPECT_TRUE(test, kunit_has_active_suppress_warning()); + } + + KUNIT_EXPECT_FALSE(test, kunit_has_active_suppress_warning()); + + kunit_warning_suppress(test) { + KUNIT_EXPECT_TRUE(test, kunit_has_active_suppress_warning()); + } + + KUNIT_EXPECT_FALSE(test, kunit_has_active_suppress_warning()); +} + +static void backtrace_suppression_test_multi_scope(struct kunit *test) +{ + struct kunit_suppressed_warning *sw1, *sw2; + + if (!IS_ENABLED(CONFIG_BUG)) + kunit_skip(test, "requires CONFIG_BUG"); + if (!IS_ENABLED(CONFIG_DEBUG_BUGVERBOSE)) + kunit_skip(test, "requires CONFIG_DEBUG_BUGVERBOSE"); + + sw1 = kunit_start_suppress_warning(test); + trigger_backtrace_warn_on(); + WARN(1, "suppressed by sw1"); + kunit_end_suppress_warning(test, sw1); + + sw2 = kunit_start_suppress_warning(test); + WARN(1, "suppressed by sw2"); + kunit_end_suppress_warning(test, sw2); + + KUNIT_EXPECT_EQ(test, kunit_suppressed_warning_count(sw1), 2); + KUNIT_EXPECT_EQ(test, kunit_suppressed_warning_count(sw2), 1); +} + +struct cross_kthread_data { + bool was_active; + struct completion done; +}; + +static int cross_kthread_fn(void *data) +{ + struct cross_kthread_data *d = data; + + d->was_active = kunit_has_active_suppress_warning(); + complete(&d->done); + while (!kthread_should_stop()) + schedule(); + return 0; +} + +static void backtrace_suppression_test_cross_kthread(struct kunit *test) +{ + struct cross_kthread_data data; + struct task_struct *task; + + data.was_active = false; + init_completion(&data.done); + + kunit_warning_suppress(test) { + task = kthread_run(cross_kthread_fn, &data, "kunit-cross-test"); + KUNIT_ASSERT_FALSE(test, IS_ERR(task)); + wait_for_completion(&data.done); + kthread_stop(task); + } + + KUNIT_EXPECT_FALSE(test, data.was_active); +} + +static struct kunit_case backtrace_suppression_test_cases[] = { + KUNIT_CASE(backtrace_suppression_test_warn_direct), + KUNIT_CASE(backtrace_suppression_test_warn_indirect), + KUNIT_CASE(backtrace_suppression_test_warn_multi), + KUNIT_CASE(backtrace_suppression_test_warn_on_direct), + KUNIT_CASE(backtrace_suppression_test_warn_on_indirect), + KUNIT_CASE(backtrace_suppression_test_count), + KUNIT_CASE(backtrace_suppression_test_active_state), + KUNIT_CASE(backtrace_suppression_test_multi_scope), + KUNIT_CASE(backtrace_suppression_test_cross_kthread), + {} +}; + +static struct kunit_suite backtrace_suppression_test_suite = { + .name = "backtrace-suppression-test", + .test_cases = backtrace_suppression_test_cases, +}; +kunit_test_suites(&backtrace_suppression_test_suite); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("KUnit test to verify warning backtrace suppression"); 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