fls64

函数名称：ls64 - find last set bit in a 64-bit word*@x: the word to search* This is defined in a similar way as the libc and compiler builtin* ffsll, but returns the position of the most significant set bit

函数原型：static __always_inline int fls64(__u64 x)

返回类型：int

参数：

类型	参数	名称
__u64	x

**调用者**
名称	描述
int_sqrt64	_sqrt64 - strongly typed int_sqrt function when minimum 64 bit input* is expected.*@x: 64bit integer of which to calculate the sqrt
cpu_has_xfeatures	Return whether the system supports a given xfeature.* Also return the name of the (most advanced) feature that the caller requested:
generic_get_mtrr
set_max_threads	set_max_threads
dma_direct_get_required_mask
scale64_check_overflow	Scale base by mult/div checking for overflow
tnum_range
perf_calculate_period
add_token_u64
opal_generic_read_write_table
fls_long
__ilog2_u64
find_next_netdev_feature	Finds the next feature with the highest number of the range of start till 0.
count_leading_zeros	_leading_zeros - Count the number of zeros from the MSB back@x: The value Count the number of leading zeros from the MSB going towards the LSB in @x.* If the MSB of @x is set, the result is 0.

函数逻辑报告