diff options
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/include/shared/irq_user.h | 14 | ||||
| -rw-r--r-- | arch/um/kernel/irq.c | 34 |
2 files changed, 22 insertions, 26 deletions
diff --git a/arch/um/include/shared/irq_user.h b/arch/um/include/shared/irq_user.h index 107751dce153..2dd5fd7d9443 100644 --- a/arch/um/include/shared/irq_user.h +++ b/arch/um/include/shared/irq_user.h @@ -9,25 +9,11 @@ #include <sysdep/ptrace.h> #include <stdbool.h> -struct irq_fd { - struct irq_fd *next; - void *id; - int fd; - int type; - int irq; - int events; - bool active; - bool pending; - bool purge; -}; - #define IRQ_READ 0 #define IRQ_WRITE 1 #define IRQ_NONE 2 #define MAX_IRQ_TYPE (IRQ_NONE + 1) - - struct siginfo; extern void sigio_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs); extern void free_irq_by_fd(int fd); diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index 97ff77c297c8..923a80c9808a 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -26,14 +26,24 @@ extern void free_irqs(void); /* When epoll triggers we do not know why it did so * we can also have different IRQs for read and write. - * This is why we keep a small irq_fd array for each fd - + * This is why we keep a small irq_reg array for each fd - * one entry per IRQ type */ +struct irq_reg { + void *id; + int type; + int irq; + int events; + bool active; + bool pending; + bool purge; +}; + struct irq_entry { struct irq_entry *next; int fd; - struct irq_fd *irq_array[MAX_IRQ_TYPE + 1]; + struct irq_reg *irq_array[MAX_IRQ_TYPE + 1]; }; static struct irq_entry *active_fds; @@ -41,7 +51,7 @@ static struct irq_entry *active_fds; static DEFINE_SPINLOCK(irq_lock); static DECLARE_BITMAP(irqs_allocated, NR_IRQS); -static void irq_io_loop(struct irq_fd *irq, struct uml_pt_regs *regs) +static void irq_io_loop(struct irq_reg *irq, struct uml_pt_regs *regs) { /* * irq->active guards against reentry @@ -65,7 +75,7 @@ static void irq_io_loop(struct irq_fd *irq, struct uml_pt_regs *regs) void sigio_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs) { struct irq_entry *irq_entry; - struct irq_fd *irq; + struct irq_reg *irq; int n, i, j; @@ -86,7 +96,7 @@ void sigio_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs) } for (i = 0; i < n ; i++) { - /* Epoll back reference is the entry with 3 irq_fd + /* Epoll back reference is the entry with 3 irq_reg * leaves - one for each irq type. */ irq_entry = (struct irq_entry *) @@ -112,7 +122,7 @@ static int assign_epoll_events_to_irq(struct irq_entry *irq_entry) { int i; int events = 0; - struct irq_fd *irq; + struct irq_reg *irq; for (i = 0; i < MAX_IRQ_TYPE ; i++) { irq = irq_entry->irq_array[i]; @@ -131,7 +141,7 @@ static int assign_epoll_events_to_irq(struct irq_entry *irq_entry) static int activate_fd(int irq, int fd, int type, void *dev_id) { - struct irq_fd *new_fd; + struct irq_reg *new_fd; struct irq_entry *irq_entry; int i, err, events; unsigned long flags; @@ -182,13 +192,13 @@ static int activate_fd(int irq, int fd, int type, void *dev_id) /* New entry for this fd */ err = -ENOMEM; - new_fd = kmalloc(sizeof(struct irq_fd), GFP_ATOMIC); + new_fd = kmalloc(sizeof(struct irq_reg), GFP_ATOMIC); if (new_fd == NULL) goto out_unlock; events = os_event_mask(type); - *new_fd = ((struct irq_fd) { + *new_fd = ((struct irq_reg) { .id = dev_id, .irq = irq, .type = type, @@ -273,8 +283,8 @@ static struct irq_entry *get_irq_entry_by_fd(int fd) /* * Walk the IRQ list and dispose of an entry for a specific - * device, fd and number. Note - if sharing an IRQ for read - * and writefor the same FD it will be disposed in either case. + * device and number. Note - if sharing an IRQ for read + * and write for the same FD it will be disposed in either case. * If this behaviour is undesirable use different IRQ ids. */ @@ -289,7 +299,7 @@ static void do_free_by_irq_and_dev( ) { int i; - struct irq_fd *to_free; + struct irq_reg *to_free; for (i = 0; i < MAX_IRQ_TYPE ; i++) { if (irq_entry->irq_array[i] != NULL) { |