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/linux-6.12.1/arch/arm/lib/
Dlib1funcs.S40 .macro ARM_DIV_BODY dividend, divisor, result, curbit
44 clz \curbit, \divisor
48 mov \divisor, \divisor, lsl \result
54 @ Initially shift the divisor left 3 bits if possible,
58 tst \divisor, #0xe0000000
59 moveq \divisor, \divisor, lsl #3
63 @ Unless the divisor is very big, shift it up in multiples of
65 @ division loop. Continue shifting until the divisor is
67 1: cmp \divisor, #0x10000000
68 cmplo \divisor, \dividend
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/linux-6.12.1/include/linux/
Dmath64.h26 static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) in div_u64_rem() argument
28 *remainder = dividend % divisor; in div_u64_rem()
29 return dividend / divisor; in div_u64_rem()
40 static inline s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder) in div_s64_rem() argument
42 *remainder = dividend % divisor; in div_s64_rem()
43 return dividend / divisor; in div_s64_rem()
54 static inline u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder) in div64_u64_rem() argument
56 *remainder = dividend % divisor; in div64_u64_rem()
57 return dividend / divisor; in div64_u64_rem()
67 static inline u64 div64_u64(u64 dividend, u64 divisor) in div64_u64() argument
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Dmath.h86 #define DIV_ROUND_CLOSEST(x, divisor)( \ argument
89 typeof(divisor) __d = divisor; \
91 ((typeof(divisor))-1) > 0 || \
101 #define DIV_ROUND_CLOSEST_ULL(x, divisor)( \ argument
103 typeof(divisor) __d = divisor; \
/linux-6.12.1/lib/math/
Ddiv64.c68 s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder) in div_s64_rem() argument
73 quotient = div_u64_rem(-dividend, abs(divisor), (u32 *)remainder); in div_s64_rem()
75 if (divisor > 0) in div_s64_rem()
78 quotient = div_u64_rem(dividend, abs(divisor), (u32 *)remainder); in div_s64_rem()
79 if (divisor < 0) in div_s64_rem()
99 u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder) in div64_u64_rem() argument
101 u32 high = divisor >> 32; in div64_u64_rem()
106 quot = div_u64_rem(dividend, divisor, &rem32); in div64_u64_rem()
110 quot = div_u64(dividend >> n, divisor >> n); in div64_u64_rem()
115 *remainder = dividend - quot * divisor; in div64_u64_rem()
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/linux-6.12.1/arch/alpha/lib/
Ddivide.S56 #define divisor $1 macro
104 bis $25,$25,divisor
109 LONGIFY(divisor)
114 beq divisor, 9f /* div by zero */
125 1: cmpult divisor,modulus,compare
126 s8addq divisor,$31,divisor
130 1: cmpult divisor,modulus,compare
131 blt divisor, 2f
132 addq divisor,divisor,divisor
141 cmpule divisor,modulus,compare
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Dev6-divide.S66 #define divisor $1 macro
114 bis $25,$25,divisor # E :
120 LONGIFY(divisor) # E : U L L U
127 beq divisor, 9f /* div by zero */
144 1: cmpult divisor,modulus,compare # E :
145 s8addq divisor,$31,divisor # E :
149 1: cmpult divisor,modulus,compare # E :
152 blt divisor, 2f # U : U L U L
154 addq divisor,divisor,divisor # E :
172 cmpule divisor,modulus,compare # E :
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/linux-6.12.1/drivers/cpufreq/
Dsparc-us2e-cpufreq.c86 unsigned long old_divisor, unsigned long divisor) in frob_mem_refresh() argument
91 refr_count /= (MCTRL0_REFR_CLKS_P_CNT * divisor * 1000000000UL); in frob_mem_refresh()
118 unsigned long old_divisor, unsigned long divisor) in us2e_transition() argument
123 if (old_divisor == 2 && divisor == 1) { in us2e_transition()
126 frob_mem_refresh(0, clock_tick, old_divisor, divisor); in us2e_transition()
127 } else if (old_divisor == 1 && divisor == 2) { in us2e_transition()
128 frob_mem_refresh(1, clock_tick, old_divisor, divisor); in us2e_transition()
131 } else if (old_divisor == 1 && divisor > 2) { in us2e_transition()
135 2, divisor); in us2e_transition()
136 } else if (old_divisor > 2 && divisor == 1) { in us2e_transition()
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/linux-6.12.1/drivers/gpu/drm/amd/display/dc/spl/
Dspl_os_types.h23 static inline uint64_t spl_div_u64_rem(uint64_t dividend, uint32_t divisor, uint32_t *remainder) in spl_div_u64_rem() argument
25 return div_u64_rem(dividend, divisor, remainder); in spl_div_u64_rem()
28 static inline uint64_t spl_div_u64(uint64_t dividend, uint32_t divisor) in spl_div_u64() argument
30 return div_u64(dividend, divisor); in spl_div_u64()
33 static inline uint64_t spl_div64_u64(uint64_t dividend, uint64_t divisor) in spl_div64_u64() argument
35 return div64_u64(dividend, divisor); in spl_div64_u64()
38 static inline uint64_t spl_div64_u64_rem(uint64_t dividend, uint64_t divisor, uint64_t *remainder) in spl_div64_u64_rem() argument
40 return div64_u64_rem(dividend, divisor, remainder); in spl_div64_u64_rem()
43 static inline int64_t spl_div64_s64(int64_t dividend, int64_t divisor) in spl_div64_s64() argument
45 return div64_s64(dividend, divisor); in spl_div64_s64()
/linux-6.12.1/drivers/acpi/acpica/
Dutmath.c257 u32 divisor, u64 *out_quotient, u32 *out_remainder) in acpi_ut_short_divide() argument
267 if (divisor == 0) { in acpi_ut_short_divide()
278 ACPI_DIV_64_BY_32(0, dividend_ovl.part.hi, divisor, in acpi_ut_short_divide()
281 ACPI_DIV_64_BY_32(remainder32, dividend_ovl.part.lo, divisor, in acpi_ut_short_divide()
316 union uint64_overlay divisor; in acpi_ut_divide() local
334 divisor.full = in_divisor; in acpi_ut_divide()
336 if (divisor.part.hi == 0) { in acpi_ut_divide()
347 ACPI_DIV_64_BY_32(0, dividend.part.hi, divisor.part.lo, in acpi_ut_divide()
350 ACPI_DIV_64_BY_32(partial1, dividend.part.lo, divisor.part.lo, in acpi_ut_divide()
361 normalized_divisor = divisor; in acpi_ut_divide()
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/linux-6.12.1/drivers/iio/common/hid-sensors/
Dhid-sensor-attributes.c71 static void simple_div(int dividend, int divisor, int *whole, in simple_div() argument
78 if (divisor == 0) { in simple_div()
82 *whole = dividend/divisor; in simple_div()
83 rem = dividend % divisor; in simple_div()
85 while (rem <= divisor) { in simple_div()
89 *micro_frac = (rem / divisor) * int_pow(10, 6 - exp); in simple_div()
95 int divisor = int_pow(10, exp); in split_micro_fraction() local
97 *val1 = no / divisor; in split_micro_fraction()
98 *val2 = no % divisor * int_pow(10, 6 - exp); in split_micro_fraction()
133 int divisor; in convert_to_vtf_format() local
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/linux-6.12.1/Documentation/devicetree/bindings/clock/ti/
Ddivider.txt6 the register is one less than the actual divisor value. E.g:
8 register value actual divisor value
15 ti,index-starts-at-one - valid divisor values start at 1, not the default
17 register value actual divisor value
22 ti,index-power-of-two - valid divisor values are powers of two. E.g:
23 register value actual divisor value
32 Which will map the resulting values to a divisor table by their index:
33 register value actual divisor value
36 2 <invalid divisor, skipped>
63 - ti,min-div : min divisor for dividing the input clock rate, only
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/linux-6.12.1/arch/mips/cavium-octeon/executive/
Dcvmx-helper-jtag.c50 uint32_t divisor = cvmx_sysinfo_get()->cpu_clock_hz / (25 * 1000000); in cvmx_helper_qlm_jtag_init() local
51 divisor = (divisor - 1) >> 2; in cvmx_helper_qlm_jtag_init()
53 while (divisor) { in cvmx_helper_qlm_jtag_init()
55 divisor = divisor >> 1; in cvmx_helper_qlm_jtag_init()
/linux-6.12.1/sound/soc/codecs/
Dtlv320aic26.c70 int fsref, divisor, wlen, pval, jval, dval, qval; in aic26_hw_params() local
79 case 8000: fsref = 48000; divisor = AIC26_DIV_6; break; in aic26_hw_params()
80 case 11025: fsref = 44100; divisor = AIC26_DIV_4; break; in aic26_hw_params()
81 case 12000: fsref = 48000; divisor = AIC26_DIV_4; break; in aic26_hw_params()
82 case 16000: fsref = 48000; divisor = AIC26_DIV_3; break; in aic26_hw_params()
83 case 22050: fsref = 44100; divisor = AIC26_DIV_2; break; in aic26_hw_params()
84 case 24000: fsref = 48000; divisor = AIC26_DIV_2; break; in aic26_hw_params()
85 case 32000: fsref = 48000; divisor = AIC26_DIV_1_5; break; in aic26_hw_params()
86 case 44100: fsref = 44100; divisor = AIC26_DIV_1; break; in aic26_hw_params()
87 case 48000: fsref = 48000; divisor = AIC26_DIV_1; break; in aic26_hw_params()
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/linux-6.12.1/drivers/net/wireless/realtek/rtw89/
Dutil.h43 static inline s32 s32_div_u32_round_down(s32 dividend, u32 divisor, s32 *remainder) in s32_div_u32_round_down() argument
45 s32 i_divisor = (s32)divisor; in s32_div_u32_round_down()
62 static inline s32 s32_div_u32_round_closest(s32 dividend, u32 divisor) in s32_div_u32_round_closest() argument
64 return s32_div_u32_round_down(dividend + divisor / 2, divisor, NULL); in s32_div_u32_round_closest()
/linux-6.12.1/drivers/thermal/
Dgov_fair_share.c82 u32 divisor; in fair_share_throttle() local
89 divisor = tz->num_trips; in fair_share_throttle()
92 divisor *= total_weight; in fair_share_throttle()
94 divisor *= nr_instances; in fair_share_throttle()
96 instance->target = div_u64(dividend, divisor); in fair_share_throttle()
/linux-6.12.1/arch/x86/include/asm/
Ddiv64.h43 static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) in div_u64_rem() argument
53 if (upper >= divisor) { in div_u64_rem()
54 d.v32[1] = upper / divisor; in div_u64_rem()
55 upper %= divisor; in div_u64_rem()
58 "rm" (divisor), "0" (d.v32[0]), "1" (upper)); in div_u64_rem()
/linux-6.12.1/drivers/clk/
Dclk-vt8500.c135 u32 divisor; in vt8500_dclk_round_rate() local
140 divisor = *prate / rate; in vt8500_dclk_round_rate()
143 if (rate * divisor < *prate) in vt8500_dclk_round_rate()
144 divisor++; in vt8500_dclk_round_rate()
150 if ((cdev->div_mask == 0x3F) && (divisor > 31)) { in vt8500_dclk_round_rate()
151 divisor = 64 * ((divisor / 64) + 1); in vt8500_dclk_round_rate()
154 return *prate / divisor; in vt8500_dclk_round_rate()
161 u32 divisor; in vt8500_dclk_set_rate() local
167 divisor = parent_rate / rate; in vt8500_dclk_set_rate()
169 if (divisor == cdev->div_mask + 1) in vt8500_dclk_set_rate()
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/linux-6.12.1/tools/tracing/rtla/src/
Dtimerlat_top.c268 int divisor = params->output_divisor; in timerlat_top_print() local
271 if (divisor == 0) in timerlat_top_print()
290 trace_seq_printf(s, "%9llu ", (cpu_data->sum_irq / cpu_data->irq_count) / divisor); in timerlat_top_print()
291 trace_seq_printf(s, "%9llu |", cpu_data->max_irq / divisor); in timerlat_top_print()
297 trace_seq_printf(s, "%9llu ", cpu_data->cur_thread / divisor); in timerlat_top_print()
298 trace_seq_printf(s, "%9llu ", cpu_data->min_thread / divisor); in timerlat_top_print()
300 (cpu_data->sum_thread / cpu_data->thread_count) / divisor); in timerlat_top_print()
301 trace_seq_printf(s, "%9llu", cpu_data->max_thread / divisor); in timerlat_top_print()
314 trace_seq_printf(s, "%9llu ", cpu_data->cur_user / divisor); in timerlat_top_print()
315 trace_seq_printf(s, "%9llu ", cpu_data->min_user / divisor); in timerlat_top_print()
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/linux-6.12.1/arch/powerpc/lib/
Ddiv64.S22 divwu r7,r5,r4 # if dividend.hi >= divisor,
23 mullw r0,r7,r4 # quotient.hi = dividend.hi / divisor
24 subf. r5,r0,r5 # dividend.hi %= divisor
31 srw r10,r10,r0 # the divisor right the same amount,
41 mulhwu r9,r11,r4 # multiply the estimate by the divisor,
42 subfc r6,r10,r6 # take the product from the divisor,
/linux-6.12.1/lib/crypto/mpi/
Dmpi-div.c19 int mpi_fdiv_r(MPI rem, MPI dividend, MPI divisor) in mpi_fdiv_r() argument
21 int divisor_sign = divisor->sign; in mpi_fdiv_r()
29 if (rem == divisor) { in mpi_fdiv_r()
30 temp_divisor = mpi_copy(divisor); in mpi_fdiv_r()
33 divisor = temp_divisor; in mpi_fdiv_r()
36 err = mpi_tdiv_r(rem, dividend, divisor); in mpi_fdiv_r()
41 err = mpi_add(rem, rem, divisor); in mpi_fdiv_r()
/linux-6.12.1/arch/x86/kernel/
Dearly_printk.c130 static __init void early_serial_hw_init(unsigned divisor) in early_serial_hw_init() argument
141 serial_out(early_serial_base, DLL, divisor & 0xff); in early_serial_hw_init()
142 serial_out(early_serial_base, DLH, (divisor >> 8) & 0xff); in early_serial_hw_init()
150 unsigned divisor; in early_serial_init() local
184 divisor = 115200 / baud; in early_serial_init()
191 early_serial_hw_init(divisor); in early_serial_init()
219 unsigned divisor; in early_pci_serial_init() local
313 divisor = 115200 / baud; in early_pci_serial_init()
316 early_serial_hw_init(divisor); in early_pci_serial_init()
/linux-6.12.1/drivers/cpuidle/governors/
Dmenu.c166 int i, divisor; in get_typical_interval() local
178 divisor = 0; in get_typical_interval()
183 divisor++; in get_typical_interval()
195 if (divisor == INTERVALS) in get_typical_interval()
198 avg = div_u64(sum, divisor); in get_typical_interval()
209 if (divisor == INTERVALS) in get_typical_interval()
212 do_div(variance, divisor); in get_typical_interval()
227 if ((((u64)avg*avg > variance*36) && (divisor * 4 >= INTERVALS * 3)) in get_typical_interval()
242 if ((divisor * 4) <= INTERVALS * 3) in get_typical_interval()
/linux-6.12.1/arch/x86/boot/
Dstring.c201 static inline u64 __div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) in __div_u64_rem() argument
211 if (upper >= divisor) { in __div_u64_rem()
212 d.v32[1] = upper / divisor; in __div_u64_rem()
213 upper %= divisor; in __div_u64_rem()
216 "rm" (divisor), "0" (d.v32[0]), "1" (upper)); in __div_u64_rem()
220 static inline u64 __div_u64(u64 dividend, u32 divisor) in __div_u64() argument
224 return __div_u64_rem(dividend, divisor, &remainder); in __div_u64()
/linux-6.12.1/drivers/comedi/drivers/
Dadv_pci1760.c178 unsigned int divisor; in pci1760_pwm_ns_to_div() local
182 divisor = DIV_ROUND_CLOSEST(ns, PCI1760_PWM_TIMEBASE); in pci1760_pwm_ns_to_div()
185 divisor = DIV_ROUND_UP(ns, PCI1760_PWM_TIMEBASE); in pci1760_pwm_ns_to_div()
188 divisor = ns / PCI1760_PWM_TIMEBASE; in pci1760_pwm_ns_to_div()
194 if (divisor < 1) in pci1760_pwm_ns_to_div()
195 divisor = 1; in pci1760_pwm_ns_to_div()
196 if (divisor > 0xffff) in pci1760_pwm_ns_to_div()
197 divisor = 0xffff; in pci1760_pwm_ns_to_div()
199 return divisor; in pci1760_pwm_ns_to_div()
/linux-6.12.1/Documentation/devicetree/bindings/clock/
Dvt8500.txt44 - divisor-reg : shall be the register offset from PMC base for the divisor
47 - divisor-mask : shall be the mask for the divisor register. Defaults to 0x1f
70 divisor-reg = <0x328>;
71 divisor-mask = <0x3f>;

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