From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- lib/kunit/resource.c | 178 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 lib/kunit/resource.c (limited to 'lib/kunit/resource.c') diff --git a/lib/kunit/resource.c b/lib/kunit/resource.c new file mode 100644 index 000000000..45e55238c --- /dev/null +++ b/lib/kunit/resource.c @@ -0,0 +1,178 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KUnit resource API for test managed resources (allocations, etc.). + * + * Copyright (C) 2022, Google LLC. + * Author: Daniel Latypov + */ + +#include +#include +#include + +/* + * Used for static resources and when a kunit_resource * has been created by + * kunit_alloc_resource(). When an init function is supplied, @data is passed + * into the init function; otherwise, we simply set the resource data field to + * the data value passed in. Doesn't initialize res->should_kfree. + */ +int __kunit_add_resource(struct kunit *test, + kunit_resource_init_t init, + kunit_resource_free_t free, + struct kunit_resource *res, + void *data) +{ + int ret = 0; + unsigned long flags; + + res->free = free; + kref_init(&res->refcount); + + if (init) { + ret = init(res, data); + if (ret) + return ret; + } else { + res->data = data; + } + + spin_lock_irqsave(&test->lock, flags); + list_add_tail(&res->node, &test->resources); + /* refcount for list is established by kref_init() */ + spin_unlock_irqrestore(&test->lock, flags); + + return ret; +} +EXPORT_SYMBOL_GPL(__kunit_add_resource); + +void kunit_remove_resource(struct kunit *test, struct kunit_resource *res) +{ + unsigned long flags; + bool was_linked; + + spin_lock_irqsave(&test->lock, flags); + was_linked = !list_empty(&res->node); + list_del_init(&res->node); + spin_unlock_irqrestore(&test->lock, flags); + + if (was_linked) + kunit_put_resource(res); +} +EXPORT_SYMBOL_GPL(kunit_remove_resource); + +int kunit_destroy_resource(struct kunit *test, kunit_resource_match_t match, + void *match_data) +{ + struct kunit_resource *res = kunit_find_resource(test, match, + match_data); + + if (!res) + return -ENOENT; + + kunit_remove_resource(test, res); + + /* We have a reference also via _find(); drop it. */ + kunit_put_resource(res); + + return 0; +} +EXPORT_SYMBOL_GPL(kunit_destroy_resource); + +struct kunit_action_ctx { + struct kunit_resource res; + kunit_action_t *func; + void *ctx; +}; + +static void __kunit_action_free(struct kunit_resource *res) +{ + struct kunit_action_ctx *action_ctx = container_of(res, struct kunit_action_ctx, res); + + action_ctx->func(action_ctx->ctx); +} + + +int kunit_add_action(struct kunit *test, void (*action)(void *), void *ctx) +{ + struct kunit_action_ctx *action_ctx; + + KUNIT_ASSERT_NOT_NULL_MSG(test, action, "Tried to action a NULL function!"); + + action_ctx = kzalloc_obj(*action_ctx); + if (!action_ctx) + return -ENOMEM; + + action_ctx->func = action; + action_ctx->ctx = ctx; + + action_ctx->res.should_kfree = true; + /* As init is NULL, this cannot fail. */ + __kunit_add_resource(test, NULL, __kunit_action_free, &action_ctx->res, action_ctx); + + return 0; +} +EXPORT_SYMBOL_GPL(kunit_add_action); + +int kunit_add_action_or_reset(struct kunit *test, void (*action)(void *), + void *ctx) +{ + int res = kunit_add_action(test, action, ctx); + + if (res) + action(ctx); + return res; +} +EXPORT_SYMBOL_GPL(kunit_add_action_or_reset); + +static bool __kunit_action_match(struct kunit *test, + struct kunit_resource *res, void *match_data) +{ + struct kunit_action_ctx *match_ctx = (struct kunit_action_ctx *)match_data; + struct kunit_action_ctx *res_ctx = container_of(res, struct kunit_action_ctx, res); + + /* Make sure this is a free function. */ + if (res->free != __kunit_action_free) + return false; + + /* Both the function and context data should match. */ + return (match_ctx->func == res_ctx->func) && (match_ctx->ctx == res_ctx->ctx); +} + +void kunit_remove_action(struct kunit *test, + kunit_action_t *action, + void *ctx) +{ + struct kunit_action_ctx match_ctx; + struct kunit_resource *res; + + match_ctx.func = action; + match_ctx.ctx = ctx; + + res = kunit_find_resource(test, __kunit_action_match, &match_ctx); + if (res) { + /* Remove the free function so we don't run the action. */ + res->free = NULL; + kunit_remove_resource(test, res); + kunit_put_resource(res); + } +} +EXPORT_SYMBOL_GPL(kunit_remove_action); + +void kunit_release_action(struct kunit *test, + kunit_action_t *action, + void *ctx) +{ + struct kunit_action_ctx match_ctx; + struct kunit_resource *res; + + match_ctx.func = action; + match_ctx.ctx = ctx; + + res = kunit_find_resource(test, __kunit_action_match, &match_ctx); + if (res) { + kunit_remove_resource(test, res); + /* We have to put() this here, else free won't be called. */ + kunit_put_resource(res); + } +} +EXPORT_SYMBOL_GPL(kunit_release_action); -- cgit v1.3.1