diff options
| author | Suren Baghdasaryan <surenb@google.com> | 2022-07-31 09:15:12 -0700 |
|---|---|---|
| committer | Suren Baghdasaryan <surenb@google.com> | 2022-08-30 20:00:15 +0000 |
| commit | 2c6a7c53b2e0ade59d2f33028c163ee6b27550e6 (patch) | |
| tree | 2eb6589e9d32f3be437b591df77e075aac381877 | |
| parent | 3651c41f3c379227616a08dc013e9271b4b76fb3 (diff) | |
TESTING: drivers/staging: add module for testing code tagging module support
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
| -rw-r--r-- | drivers/staging/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/staging/Makefile | 1 | ||||
| -rw-r--r-- | drivers/staging/ctagmod/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/staging/ctagmod/Makefile | 2 | ||||
| -rw-r--r-- | drivers/staging/ctagmod/ctagmod.c | 50 |
5 files changed, 64 insertions, 0 deletions
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 3bd80f9695ac..6dd05a794746 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -84,4 +84,6 @@ source "drivers/staging/qlge/Kconfig" source "drivers/staging/vme_user/Kconfig" +source "drivers/staging/ctagmod/Kconfig" + endif # STAGING diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index 1d9ae39fea14..d0ee659e4ed4 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -31,3 +31,4 @@ obj-$(CONFIG_PI433) += pi433/ obj-$(CONFIG_XIL_AXIS_FIFO) += axis-fifo/ obj-$(CONFIG_FIELDBUS_DEV) += fieldbus/ obj-$(CONFIG_QLGE) += qlge/ +obj-$(CONFIG_CTAGMOD) += ctagmod/ diff --git a/drivers/staging/ctagmod/Kconfig b/drivers/staging/ctagmod/Kconfig new file mode 100644 index 000000000000..f267ffc6afbb --- /dev/null +++ b/drivers/staging/ctagmod/Kconfig @@ -0,0 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0 +config CTAGMOD + tristate "Code tagging test module" + depends on CODE_TAGGING + help + Code tagging test module. + + To compile this driver as a module, choose M here: the module + will be called ctagmod. diff --git a/drivers/staging/ctagmod/Makefile b/drivers/staging/ctagmod/Makefile new file mode 100644 index 000000000000..63342b42d82c --- /dev/null +++ b/drivers/staging/ctagmod/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_CTAGMOD) += ctagmod.o diff --git a/drivers/staging/ctagmod/ctagmod.c b/drivers/staging/ctagmod/ctagmod.c new file mode 100644 index 000000000000..b6e97719a60a --- /dev/null +++ b/drivers/staging/ctagmod/ctagmod.c @@ -0,0 +1,50 @@ +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/slab.h> + +MODULE_LICENSE("GPL"); + +static struct page *pg_data; +static void *slab_data; + +static int __init ctagmod_start(void) +{ + printk(KERN_INFO "Loading ctagmod module...\n"); + +#ifdef CONFIG_PAGE_ALLOC_TAGGING + pg_data = alloc_pages(GFP_KERNEL, 0); + if (unlikely(!pg_data)) { + printk(KERN_ERR "Failed to allocate a page!\n"); + return -ENOMEM; + } + printk(KERN_INFO "Page is allocated\n"); +#else + printk(KERN_INFO "CONFIG_PAGE_ALLOC_TAGGING is undefined\n"); +#endif + +#ifdef CONFIG_SLAB_ALLOC_TAGGING + slab_data = kmalloc(10, GFP_KERNEL); + if (unlikely(!slab_data)) { + printk(KERN_ERR "Failed to allocate a slab object!\n"); + return -ENOMEM; + } + printk(KERN_INFO "Slab object is allocated\n"); +#else + printk(KERN_INFO "CONFIG_SLAB_ALLOC_TAGGING is undefined\n"); +#endif + return 0; +} + +static void __exit ctagmod_end(void) +{ + if (slab_data) + kfree(slab_data); + if (pg_data) + free_pages((unsigned long)page_address(pg_data), 0); + printk(KERN_INFO "Unloading ctagmod\n"); +} + +module_init(ctagmod_start); +module_exit(ctagmod_end); |