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/tests/liveupdate.c | 143 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100644 lib/tests/liveupdate.c (limited to 'lib/tests/liveupdate.c') diff --git a/lib/tests/liveupdate.c b/lib/tests/liveupdate.c new file mode 100644 index 000000000..4c08a7c6f --- /dev/null +++ b/lib/tests/liveupdate.c @@ -0,0 +1,143 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Copyright (c) 2025, Google LLC. + * Pasha Tatashin + */ + +#define pr_fmt(fmt) KBUILD_MODNAME " test: " fmt + +#include +#include +#include +#include +#include +#include "../../kernel/liveupdate/luo_internal.h" + +static const struct liveupdate_flb_ops test_flb_ops; +#define DEFINE_TEST_FLB(i) { \ + .ops = &test_flb_ops, \ + .compatible = LIVEUPDATE_TEST_FLB_COMPATIBLE(i), \ +} + +/* Number of Test FLBs to register with every file handler */ +#define TEST_NFLBS 3 +static struct liveupdate_flb test_flbs[TEST_NFLBS] = { + DEFINE_TEST_FLB(0), + DEFINE_TEST_FLB(1), + DEFINE_TEST_FLB(2), +}; + +#define TEST_FLB_MAGIC_BASE 0xFEEDF00DCAFEBEE0ULL + +static int test_flb_preserve(struct liveupdate_flb_op_args *argp) +{ + ptrdiff_t index = argp->flb - test_flbs; + + pr_info("%s: preserve was triggered\n", argp->flb->compatible); + argp->data = TEST_FLB_MAGIC_BASE + index; + + return 0; +} + +static void test_flb_unpreserve(struct liveupdate_flb_op_args *argp) +{ + pr_info("%s: unpreserve was triggered\n", argp->flb->compatible); +} + +static int test_flb_retrieve(struct liveupdate_flb_op_args *argp) +{ + ptrdiff_t index = argp->flb - test_flbs; + u64 expected_data = TEST_FLB_MAGIC_BASE + index; + + if (argp->data == expected_data) { + pr_info("%s: found flb data from the previous boot\n", + argp->flb->compatible); + argp->obj = (void *)argp->data; + } else { + pr_err("%s: ERROR - incorrect data handle: %llx, expected %llx\n", + argp->flb->compatible, argp->data, expected_data); + return -EINVAL; + } + + return 0; +} + +static void test_flb_finish(struct liveupdate_flb_op_args *argp) +{ + ptrdiff_t index = argp->flb - test_flbs; + void *expected_obj = (void *)(TEST_FLB_MAGIC_BASE + index); + + if (argp->obj == expected_obj) { + pr_info("%s: finish was triggered\n", argp->flb->compatible); + } else { + pr_err("%s: ERROR - finish called with invalid object\n", + argp->flb->compatible); + } +} + +static const struct liveupdate_flb_ops test_flb_ops = { + .preserve = test_flb_preserve, + .unpreserve = test_flb_unpreserve, + .retrieve = test_flb_retrieve, + .finish = test_flb_finish, + .owner = THIS_MODULE, +}; + +static void liveupdate_test_init(void) +{ + static DEFINE_MUTEX(init_lock); + static bool initialized; + int i; + + guard(mutex)(&init_lock); + + if (initialized) + return; + + for (i = 0; i < TEST_NFLBS; i++) { + struct liveupdate_flb *flb = &test_flbs[i]; + void *obj; + int err; + + err = liveupdate_flb_get_incoming(flb, &obj); + if (err && err != -ENODATA && err != -ENOENT) { + pr_err("liveupdate_flb_get_incoming for %s failed: %pe\n", + flb->compatible, ERR_PTR(err)); + } + + if (!err) + liveupdate_flb_put_incoming(flb); + } + initialized = true; +} + +void liveupdate_test_register(struct liveupdate_file_handler *fh) +{ + int err, i; + + liveupdate_test_init(); + + for (i = 0; i < TEST_NFLBS; i++) { + struct liveupdate_flb *flb = &test_flbs[i]; + + err = liveupdate_register_flb(fh, flb); + if (err) { + pr_err("Failed to register %s %pe\n", + flb->compatible, ERR_PTR(err)); + } + } + + err = liveupdate_register_flb(fh, &test_flbs[0]); + if (!err || err != -EEXIST) { + pr_err("Failed: %s should be already registered, but got err: %pe\n", + test_flbs[0].compatible, ERR_PTR(err)); + } + + pr_info("Registered %d FLBs with file handler: [%s]\n", + TEST_NFLBS, fh->compatible); +} + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Pasha Tatashin "); +MODULE_DESCRIPTION("In-kernel test for LUO mechanism"); -- cgit v1.3.1