selftests/bpf: Add a test for objects stuck in free_by_rcu_ttracegrafted

Delete all elements of BPF_F_NO_PREALLOC hash map in one batch. The first
free_bulk() starts RCU tasks trace GP and the rest of the elements are
freed while it's in flight. Wait for call_rcu_ttrace_in_progress to clear
in bpf_mem_cache of every cpu and check that free_by_rcu_ttrace and
waiting_for_gp_ttrace lists are empty.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>

1 files changed, 57 insertions, 0 deletions

diff --git a/drivers/firmware/imx/Kconfig b/drivers/firmware/imx/Kconfig
new file mode 100644
index 000000000..127ad752a
--- /dev/null
+++ b/drivers/firmware/imx/Kconfig
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config IMX_DSP
+	tristate "IMX DSP Protocol driver"
+	depends on IMX_MBOX
+	help
+	  This enables DSP IPC protocol between host AP (Linux)
+	  and the firmware running on DSP.
+	  DSP exists on some i.MX8 processors (e.g i.MX8QM, i.MX8QXP).
+
+	  It acts like a doorbell. Client might use shared memory to
+	  exchange information with DSP side.
+
+config IMX_SCU
+	bool "IMX SCU Protocol driver"
+	depends on IMX_MBOX
+	select SOC_BUS
+	help
+	  The System Controller Firmware (SCFW) is a low-level system function
+	  which runs on a dedicated Cortex-M core to provide power, clock, and
+	  resource management. It exists on some i.MX8 processors. e.g. i.MX8QM
+	  (QM, QP), and i.MX8QX (QXP, DX).
+
+	  This driver manages the IPC interface between host CPU and the
+	  SCU firmware running on M4.
+
+config IMX_SCMI_CPU_DRV
+	tristate "IMX SCMI CPU Protocol driver"
+	depends on ARCH_MXC || COMPILE_TEST
+	default y if ARCH_MXC
+	help
+	  The System Controller Management Interface firmware (SCMI FW) is
+	  a low-level system function which runs on a dedicated Cortex-M
+	  core that could provide cpu management features.
+
+	  This driver can also be built as a module.
+
+config IMX_SCMI_LMM_DRV
+	tristate "IMX SCMI LMM Protocol driver"
+	depends on ARCH_MXC || COMPILE_TEST
+	default y if ARCH_MXC
+	help
+	  The System Controller Management Interface firmware (SCMI FW) is
+	  a low-level system function which runs on a dedicated Cortex-M
+	  core that could provide Logical Machine management features.
+
+	  This driver can also be built as a module.
+
+config IMX_SCMI_MISC_DRV
+	tristate "IMX SCMI MISC Protocol driver"
+	depends on ARCH_MXC || COMPILE_TEST
+	default y if ARCH_MXC
+	help
+	  The System Controller Management Interface firmware (SCMI FW) is
+	  a low-level system function which runs on a dedicated Cortex-M
+	  core that could provide misc functions such as board control.
+
+	  This driver can also be built as a module.