diff options
Diffstat (limited to 'arch/x86/kernel/uintr_fd.c')
| -rw-r--r-- | arch/x86/kernel/uintr_fd.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/arch/x86/kernel/uintr_fd.c b/arch/x86/kernel/uintr_fd.c index a7e55d98c0c7..06d7f4f84119 100644 --- a/arch/x86/kernel/uintr_fd.c +++ b/arch/x86/kernel/uintr_fd.c @@ -12,6 +12,7 @@ #include <linux/syscalls.h> #include <asm/uintr.h> +static bool Debug = true; struct uintrfd_ctx { struct uintr_receiver_info *r_info; @@ -35,7 +36,9 @@ static int uintrfd_release(struct inode *inode, struct file *file) struct uintrfd_ctx *uintrfd_ctx = file->private_data; struct uintr_sender_info *s_info, *tmp; unsigned long flags; - + if(Debug)printk("recv: Release uintrfd for r_task %d uvec %llu\n", + uintrfd_ctx->r_info->upid_ctx->task->pid, + uintrfd_ctx->r_info->uvec); pr_debug("recv: Release uintrfd for r_task %d uvec %llu\n", uintrfd_ctx->r_info->upid_ctx->task->pid, uintrfd_ctx->r_info->uvec); @@ -66,6 +69,7 @@ static const struct file_operations uintrfd_fops = { */ SYSCALL_DEFINE2(uintr_create_fd, u64, vector, unsigned int, flags) { + if (Debug)printk("uintr_create_fd called\n"); struct uintrfd_ctx *uintrfd_ctx; int uintrfd; int ret; @@ -105,6 +109,8 @@ SYSCALL_DEFINE2(uintr_create_fd, u64, vector, unsigned int, flags) ret = uintrfd; goto out_free_uvec; } + if(Debug)printk("recv: Alloc vector success uintrfd %d uvec %llu for task=%d\n", + uintrfd, uintrfd_ctx->r_info->uvec, current->pid); pr_debug("recv: Alloc vector success uintrfd %d uvec %llu for task=%d\n", uintrfd, uintrfd_ctx->r_info->uvec, current->pid); @@ -115,6 +121,8 @@ out_free_uvec: do_uintr_unregister_vector(uintrfd_ctx->r_info); out_free_ctx: kfree(uintrfd_ctx); + if(Debug)printk("recv: Alloc vector failed for task=%d ret %d\n", + current->pid, ret); pr_debug("recv: Alloc vector failed for task=%d ret %d\n", current->pid, ret); return ret; @@ -124,7 +132,8 @@ out_free_ctx: * sys_uintr_register_handler - setup user interrupt handler for receiver. */ SYSCALL_DEFINE2(uintr_register_handler, u64 __user *, handler, unsigned int, flags) -{ +{ + if (Debug) printk("uintr_register_handler called\n"); int ret; if (!uintr_arch_enabled()) @@ -138,7 +147,7 @@ SYSCALL_DEFINE2(uintr_register_handler, u64 __user *, handler, unsigned int, fla return -EFAULT; ret = do_uintr_register_handler((u64)handler); - + if(Debug) printk("recv: register handler task=%d flags %d handler %lx ret %d\n",current->pid, flags, (unsigned long)handler, ret); pr_debug("recv: register handler task=%d flags %d handler %lx ret %d\n", current->pid, flags, (unsigned long)handler, ret); @@ -150,6 +159,7 @@ SYSCALL_DEFINE2(uintr_register_handler, u64 __user *, handler, unsigned int, fla */ SYSCALL_DEFINE1(uintr_unregister_handler, unsigned int, flags) { + if (Debug) printk("uintr_unregister_handler called\n"); int ret; if (!uintr_arch_enabled()) @@ -159,7 +169,8 @@ SYSCALL_DEFINE1(uintr_unregister_handler, unsigned int, flags) return -EINVAL; ret = do_uintr_unregister_handler(); - + if(Debug) printk("recv: unregister handler task=%d flags %d ret %d\n", + current->pid, flags, ret); pr_debug("recv: unregister handler task=%d flags %d ret %d\n", current->pid, flags, ret); @@ -171,6 +182,7 @@ SYSCALL_DEFINE1(uintr_unregister_handler, unsigned int, flags) */ SYSCALL_DEFINE2(uintr_register_sender, int, uintrfd, unsigned int, flags) { + if (Debug) printk("uintr_register_sender called\n"); struct uintr_sender_info *s_info; struct uintrfd_ctx *uintrfd_ctx; unsigned long lock_flags; @@ -227,6 +239,8 @@ SYSCALL_DEFINE2(uintr_register_sender, int, uintrfd, unsigned int, flags) ret = s_info->uitt_index; out_fdput: + if(Debug)printk("send: register sender task=%d flags %d ret(uipi_id)=%d\n", + current->pid, flags, ret); pr_debug("send: register sender task=%d flags %d ret(uipi_id)=%d\n", current->pid, flags, ret); @@ -238,7 +252,8 @@ out_fdput: * sys_uintr_unregister_sender - Unregister user inter-processor interrupt sender. */ SYSCALL_DEFINE2(uintr_unregister_sender, int, uintrfd, unsigned int, flags) -{ +{ + if (Debug) printk("uintr_unregister_sender called\n"); struct uintr_sender_info *s_info; struct uintrfd_ctx *uintrfd_ctx; struct file *uintr_f; @@ -275,7 +290,8 @@ SYSCALL_DEFINE2(uintr_unregister_sender, int, uintrfd, unsigned int, flags) } } spin_unlock_irqrestore(&uintrfd_ctx->sender_lock, lock_flags); - + if(Debug)printk("send: unregister sender uintrfd %d for task=%d ret %d\n", + uintrfd, current->pid, ret); pr_debug("send: unregister sender uintrfd %d for task=%d ret %d\n", uintrfd, current->pid, ret); |