From 5c1bec61fdfcd056df909a712e2a86bbaeb0f942 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Sun, 5 Feb 2017 17:20:31 -0700 Subject: vmbus: use kernel bitops for traversing interrupt mask Use standard kernel operations for find first set bit to traverse the channel bit array. This has added benefit of speeding up lookup on 64 bit and because it uses find first set instruction. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/hv/hyperv_vmbus.h | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers/hv/hyperv_vmbus.h') diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 86b56b677dc3..2749a4142889 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -40,11 +40,9 @@ */ #define HV_UTIL_NEGO_TIMEOUT 55 - - - -#define HV_EVENT_FLAGS_BYTE_COUNT (256) -#define HV_EVENT_FLAGS_DWORD_COUNT (256 / sizeof(u32)) +/* Define synthetic interrupt controller flag constants. */ +#define HV_EVENT_FLAGS_COUNT (256 * 8) +#define HV_EVENT_FLAGS_LONG_COUNT (256 / sizeof(unsigned long)) /* * Timer configuration register. @@ -65,8 +63,7 @@ union hv_timer_config { /* Define the synthetic interrupt controller event flags format. */ union hv_synic_event_flags { - u8 flags8[HV_EVENT_FLAGS_BYTE_COUNT]; - u32 flags32[HV_EVENT_FLAGS_DWORD_COUNT]; + unsigned long flags[HV_EVENT_FLAGS_LONG_COUNT]; }; /* Define SynIC control register. */ @@ -358,6 +355,11 @@ struct vmbus_msginfo { extern struct vmbus_connection vmbus_connection; +static inline void vmbus_send_interrupt(u32 relid) +{ + sync_set_bit(relid, vmbus_connection.send_int_page); +} + enum vmbus_message_handler_type { /* The related handler can sleep. */ VMHT_BLOCKING = 0, -- cgit v1.2.3