diff options
Diffstat (limited to 'drivers/gpu/mali/mali400ko/driver/src/devicedrv/ump/linux/ump_kernel_linux.c')
| -rw-r--r-- | drivers/gpu/mali/mali400ko/driver/src/devicedrv/ump/linux/ump_kernel_linux.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpu/mali/mali400ko/driver/src/devicedrv/ump/linux/ump_kernel_linux.c b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/ump/linux/ump_kernel_linux.c index 76d6b2f913a..5465c70ed77 100644 --- a/drivers/gpu/mali/mali400ko/driver/src/devicedrv/ump/linux/ump_kernel_linux.c +++ b/drivers/gpu/mali/mali400ko/driver/src/devicedrv/ump/linux/ump_kernel_linux.c @@ -16,6 +16,8 @@ #include <asm/uaccess.h> /* user space access */ #include <asm/atomic.h> #include <linux/device.h> +#include <linux/debugfs.h> + #include "arch/config.h" /* Configuration for current platform. The symlinc for arch is set by Makefile */ #include "ump_ioctl.h" #include "ump_kernel_common.h" @@ -48,6 +50,9 @@ MODULE_PARM_DESC(ump_major, "Device major number"); static char ump_dev_name[] = "ump"; /* should be const, but the functions we call requires non-cost */ +#if UMP_LICENSE_IS_GPL +static struct dentry *ump_debugfs_dir = NULL; +#endif /* * The data which we attached to each virtual memory mapping request we get. @@ -133,6 +138,21 @@ static void ump_cleanup_module(void) +static ssize_t ump_memory_used_read(struct file *filp, char __user *ubuf, size_t cnt, loff_t *ppos) +{ + char buf[64]; + size_t r; + u32 mem = _ump_ukk_report_memory_usage(); + + r = snprintf(buf, 64, "%u\n", mem); + return simple_read_from_buffer(ubuf, cnt, ppos, buf, r); +} + +static const struct file_operations ump_memory_usage_fops = { + .owner = THIS_MODULE, + .read = ump_memory_used_read, +}; + /* * Initialize the UMP device driver. */ @@ -140,6 +160,17 @@ int ump_kernel_device_initialize(void) { int err; dev_t dev = 0; +#if UMP_LICENSE_IS_GPL + ump_debugfs_dir = debugfs_create_dir(ump_dev_name, NULL); + if (ERR_PTR(-ENODEV) == ump_debugfs_dir) + { + ump_debugfs_dir = NULL; + } + else + { + debugfs_create_file("memory_usage", 0400, ump_debugfs_dir, NULL, &ump_memory_usage_fops); + } +#endif if (0 == ump_major) { @@ -216,6 +247,11 @@ void ump_kernel_device_terminate(void) /* free major */ unregister_chrdev_region(dev, 1); + +#if UMP_LICENSE_IS_GPL + if(ump_debugfs_dir) + debugfs_remove_recursive(ump_debugfs_dir); +#endif } /* |