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/linux/include/linux/
H A Djiffies.h23 #if HZ >= 12 && HZ < 24
25 #elif HZ >= 24 && HZ < 48
27 #elif HZ >= 48 && HZ < 96
29 #elif HZ >= 96 && HZ < 192
31 #elif HZ >= 192 && HZ < 384
33 #elif HZ >= 384 && HZ < 768
35 #elif HZ >= 768 && HZ < 1536
37 #elif HZ >= 1536 && HZ < 3072
39 #elif HZ >= 3072 && HZ < 6144
41 #elif HZ >= 6144 && HZ < 12288
[all …]
/linux/kernel/time/
H A Dtime.c368 #if HZ > MSEC_PER_SEC || (MSEC_PER_SEC % HZ)
377 #if HZ > MSEC_PER_SEC && !(HZ % MSEC_PER_SEC) in jiffies_to_msecs()
378 return (j + (HZ / MSEC_PER_SEC) - 1)/(HZ / MSEC_PER_SEC); in jiffies_to_msecs()
391 #if (USEC_PER_SEC % HZ)
404 BUILD_BUG_ON(HZ > USEC_PER_SEC); in jiffies_to_usecs()
660 # if HZ < USER_HZ in jiffies_to_clock_t()
661 return x * (USER_HZ / HZ); in jiffies_to_clock_t()
663 return x / (HZ / USER_HZ); in jiffies_to_clock_t()
679 #if (HZ % USER_HZ)==0 in clock_t_to_jiffies()
680 if (x >= ~0UL / (HZ / USER_HZ)) in clock_t_to_jiffies()
[all …]
/linux/Documentation/translations/zh_CN/scheduler/
H A Dsched-nice-design.rst20 nice级别的支持在历史上是与时间片长度耦合的，而时间片单位是由HZ滴答驱动的，
21 所以最小的时间片是1/HZ。
47 这种方法在一定程度上奏效了一段时间，但后来HZ=1000时，它导致1 jiffy为
53 因此，对于HZ=1000，我们将nice +19改为5毫秒，因为这感觉像是正确的最小
54 粒度——这相当于5%的CPU利用率。但nice +19的根本的HZ敏感属性依然保持不变，
58 总结一下：我们一直想让nice各级别一致性更强，但在HZ和jiffies的限制下，以及
85 为了解决第一个抱怨（nice级别不够“有力”），调度器与“时间片”、HZ的概念
87 更一致的nice +19支持：在新的调度器中，nice +19的任务得到一个HZ无关的
/linux/arch/microblaze/include/asm/
H A Ddelay.h36 #define __MAX_UDELAY (226050910UL/HZ) /* maximum udelay argument */
37 #define __MAX_NDELAY (4294967295UL/HZ) /* maximum ndelay argument */
65 __udelay((n) * (19 * HZ)); \
67 __udelay((n) * (19 * HZ)); \
77 __udelay((n) * HZ); \
79 __udelay((n) * HZ); \
/linux/arch/riscv/lib/
H A Ddelay.c46 #define UDELAY_MULT (2147UL * HZ + 483648UL * HZ / 1000000UL)
49 #if HZ > MAX_UDELAY_HZ
69 #define NDELAY_MULT ((unsigned long long)(2199ULL * HZ + 23255550ULL * HZ / 1000000000ULL))
72 #if HZ > MAX_NDELAY_HZ
/linux/net/bridge/
H A Dbr_private_stp.h16 #define BR_MIN_HELLO_TIME (1*HZ)
17 #define BR_MAX_HELLO_TIME (10*HZ)
19 #define BR_MIN_FORWARD_DELAY (2*HZ)
20 #define BR_MAX_FORWARD_DELAY (30*HZ)
22 #define BR_MIN_MAX_AGE (6*HZ)
23 #define BR_MAX_MAX_AGE (40*HZ)
/linux/arch/mips/sni/
H A Dtime.c15 #define SNI_COUNTER0_DIV ((SNI_CLOCK_TICK_RATE / SNI_COUNTER2_DIV) / HZ)
76 #define SNI_8254_TCSAMP_COUNTER ((SNI_8254_TICK_RATE / HZ) + 255)
107 return (ct1 - ct0) / (500000/HZ) * (500000/HZ); in dosample()
153 (int) (r4k_tick / (500000 / HZ)), in plat_time_init()
154 (int) (r4k_tick % (500000 / HZ))); in plat_time_init()
156 mips_hpt_frequency = r4k_tick * HZ; in plat_time_init()
/linux/arch/mips/sgi-ip22/
H A Dip22-time.c63 return (ct1 - ct0) / (500000/HZ) * (500000/HZ); in dosample()
109 (int) (r4k_tick / (500000 / HZ)), in plat_time_init()
110 (int) (r4k_tick % (500000 / HZ))); in plat_time_init()
112 mips_hpt_frequency = r4k_tick * HZ; in plat_time_init()
/linux/drivers/net/ethernet/dec/tulip/
H A Dtimer.c24 int next_tick = 2*HZ; in tulip_media_task()
46 next_tick = 60*HZ; in tulip_media_task()
104 next_tick = (24*HZ)/10; in tulip_media_task()
111 next_tick = 3*HZ; in tulip_media_task()
114 next_tick = 60*HZ; in tulip_media_task()
145 int next_tick = 60*HZ; in mxic_timer()
161 int next_tick = 2*HZ; in comet_timer()
H A Dpnic.c68 if (! tp->nwayset || time_after(jiffies, dev_trans_start(dev) + 1*HZ)) { in pnic_lnk_change()
92 int next_tick = 60*HZ; in pnic_timer()
106 next_tick = 3*HZ; in pnic_timer()
119 next_tick = 1*HZ; in pnic_timer()
123 next_tick = 60*HZ; in pnic_timer()
131 next_tick = 3*HZ; in pnic_timer()
134 next_tick = 1*HZ; in pnic_timer()
H A D21142.c35 int next_tick = 60*HZ; in t21142_media_task()
48 next_tick = 3*HZ; in t21142_media_task()
51 next_tick = 60*HZ; in t21142_media_task()
68 next_tick = 3*HZ; in t21142_media_task()
101 next_tick = 3*HZ; in t21142_media_task()
221 tp->timer.expires = RUN_AT(3*HZ); in t21142_lnk_change()
231 tp->timer.expires = RUN_AT(3*HZ); in t21142_lnk_change()
/linux/drivers/net/wireguard/
H A Dtimers.c62 jiffies + REJECT_AFTER_TIME * 3 * HZ); in wg_expired_retransmit_handshake()
88 jiffies + KEEPALIVE_TIMEOUT * HZ); in wg_expired_send_keepalive()
152 jiffies + (KEEPALIVE_TIMEOUT + REKEY_TIMEOUT) * HZ + in wg_timers_data_sent()
162 jiffies + KEEPALIVE_TIMEOUT * HZ); in wg_timers_data_received()
188 jiffies + REKEY_TIMEOUT * HZ + in wg_timers_handshake_initiated()
209 jiffies + REJECT_AFTER_TIME * 3 * HZ); in wg_timers_session_derived()
219 jiffies + peer->persistent_keepalive_interval * HZ); in wg_timers_any_authenticated_packet_traversal()
/linux/net/netfilter/
H A Dnf_conntrack_proto_gre.c48 [GRE_CT_UNREPLIED] = 30*HZ,
49 [GRE_CT_REPLIED] = 180*HZ,
193 (ct->proto.gre.timeout / HZ), in gre_print_conntrack()
194 (ct->proto.gre.stream_timeout / HZ)); in gre_print_conntrack()
264 ntohl(nla_get_be32(tb[CTA_TIMEOUT_GRE_UNREPLIED])) * HZ; in gre_timeout_nlattr_to_obj()
268 ntohl(nla_get_be32(tb[CTA_TIMEOUT_GRE_REPLIED])) * HZ; in gre_timeout_nlattr_to_obj()
279 htonl(timeouts[GRE_CT_UNREPLIED] / HZ)) || in gre_timeout_obj_to_nlattr()
281 htonl(timeouts[GRE_CT_REPLIED] / HZ))) in gre_timeout_obj_to_nlattr()
H A Dnf_conntrack_proto_tcp.c56 #define SECS * HZ
757 if (expires < 120 * HZ) in nf_tcp_handle_invalid()
1480 ntohl(nla_get_be32(tb[CTA_TIMEOUT_TCP_SYN_SENT]))*HZ; in tcp_timeout_nlattr_to_obj()
1485 ntohl(nla_get_be32(tb[CTA_TIMEOUT_TCP_SYN_RECV]))*HZ; in tcp_timeout_nlattr_to_obj()
1489 ntohl(nla_get_be32(tb[CTA_TIMEOUT_TCP_ESTABLISHED]))*HZ; in tcp_timeout_nlattr_to_obj()
1493 ntohl(nla_get_be32(tb[CTA_TIMEOUT_TCP_FIN_WAIT]))*HZ; in tcp_timeout_nlattr_to_obj()
1497 ntohl(nla_get_be32(tb[CTA_TIMEOUT_TCP_CLOSE_WAIT]))*HZ; in tcp_timeout_nlattr_to_obj()
1501 ntohl(nla_get_be32(tb[CTA_TIMEOUT_TCP_LAST_ACK]))*HZ; in tcp_timeout_nlattr_to_obj()
1505 ntohl(nla_get_be32(tb[CTA_TIMEOUT_TCP_TIME_WAIT]))*HZ; in tcp_timeout_nlattr_to_obj()
1509 ntohl(nla_get_be32(tb[CTA_TIMEOUT_TCP_CLOSE]))*HZ; in tcp_timeout_nlattr_to_obj()
[all …]
/linux/arch/mips/include/asm/
H A Ddelay.h24 #if HZ >= 1000
26 #elif HZ <= 200
29 #define MAX_UDELAY_MS (1000 / HZ)
/linux/arch/loongarch/include/asm/
H A Ddelay.h18 #if HZ >= 1000
20 #elif HZ <= 200
23 #define MAX_UDELAY_MS (1000 / HZ)
/linux/include/video/
H A Dudlfb.h79 #define GET_URB_TIMEOUT HZ
80 #define FREE_URB_TIMEOUT (HZ*2)
97 #define DL_DEFIO_WRITE_DELAY msecs_to_jiffies(HZ <= 300 ? 4 : 10) /* optimal value for 720p video */
98 #define DL_DEFIO_WRITE_DISABLE (HZ*60) /* "disable" with long delay */
/linux/fs/nfs/
H A Dnamespace.c30 int nfs_mountpoint_expiry_timeout = 500 * HZ;
347 if (num >= INT_MAX / HZ) in param_set_nfs_timeout()
350 num *= HZ; in param_set_nfs_timeout()
355 *((int *)kp->arg) = -1*HZ; in param_set_nfs_timeout()
366 if (num >= INT_MAX - (HZ - 1)) in param_get_nfs_timeout()
367 num = INT_MAX / HZ; in param_get_nfs_timeout()
369 num = (num + (HZ - 1)) / HZ; in param_get_nfs_timeout()
/linux/drivers/scsi/
H A Dipr.h216 #define IPR_SHUTDOWN_TIMEOUT (ipr_fastfail ? 60 * HZ : 10 * 60 * HZ)
217 #define IPR_VSET_RW_TIMEOUT (ipr_fastfail ? 30 * HZ : 2 * 60 * HZ)
218 #define IPR_ABBREV_SHUTDOWN_TIMEOUT (10 * HZ)
219 #define IPR_DUAL_IOA_ABBR_SHUTDOWN_TO (2 * 60 * HZ)
220 #define IPR_DEVICE_RESET_TIMEOUT (ipr_fastfail ? 10 * HZ : 30 * HZ)
221 #define IPR_CANCEL_TIMEOUT (ipr_fastfail ? 10 * HZ : 30 * HZ)
222 #define IPR_CANCEL_ALL_TIMEOUT (ipr_fastfail ? 10 * HZ : 30 * HZ)
223 #define IPR_ABORT_TASK_TIMEOUT (ipr_fastfail ? 10 * HZ : 30 * HZ)
224 #define IPR_INTERNAL_TIMEOUT (ipr_fastfail ? 10 * HZ : 30 * HZ)
225 #define IPR_WRITE_BUFFER_TIMEOUT (30 * 60 * HZ)
[all …]
/linux/arch/openrisc/kernel/
H A Dsetup.c217 loops_per_jiffy = *val / HZ; in calibrate_delay()
219 loops_per_jiffy / (500000 / HZ), in calibrate_delay()
220 (loops_per_jiffy / (5000 / HZ)) % 100, loops_per_jiffy); in calibrate_delay()
293 seq_printf(m, "frequency\t\t: %ld\n", loops_per_jiffy * HZ); in show_cpuinfo()
301 (loops_per_jiffy * HZ) / 500000, in show_cpuinfo()
302 ((loops_per_jiffy * HZ) / 5000) % 100); in show_cpuinfo()
/linux/drivers/net/ethernet/netronome/nfp/nfpcore/
H A Dnfp_resource.c152 unsigned long warn_at = jiffies + NFP_MUTEX_WAIT_FIRST_WARN * HZ; in nfp_resource_acquire()
153 unsigned long err_at = jiffies + NFP_MUTEX_WAIT_ERROR * HZ; in nfp_resource_acquire()
186 warn_at = jiffies + NFP_MUTEX_WAIT_NEXT_WARN * HZ; in nfp_resource_acquire()
233 unsigned long warn_at = jiffies + NFP_MUTEX_WAIT_FIRST_WARN * HZ; in nfp_resource_wait()
234 unsigned long err_at = jiffies + secs * HZ; in nfp_resource_wait()
254 warn_at = jiffies + NFP_MUTEX_WAIT_NEXT_WARN * HZ; in nfp_resource_wait()
/linux/net/x25/
H A Dx25_proc.c103 x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ, in x25_seq_socket_show()
104 x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ, in x25_seq_socket_show()
/linux/arch/m68k/include/asm/
H A Ddelay.h53 #define HZSCALE (268435456 / (1000000 / HZ))
67 __delay(xloops * HZ); in __xdelay()
114 #define HZSCALE (268435456 / (1000000 / HZ))
/linux/drivers/net/wireless/broadcom/b43/
H A Dlo.h69 #define B43_LO_CALIB_EXPIRE (HZ * (30 - 2))
70 #define B43_LO_PWRVEC_EXPIRE (HZ * (30 - 2))
71 #define B43_LO_TXCTL_EXPIRE (HZ * (180 - 4))
/linux/net/bridge/netfilter/
H A Debt_limit.c24 #define MAX_CPJ (0xFFFFFFFF / (HZ*60*60*24))
62 if (user > 0xFFFFFFFF / (HZ*CREDITS_PER_JIFFY)) in user2credits()
64 return (user / EBT_LIMIT_SCALE) * HZ * CREDITS_PER_JIFFY; in user2credits()
66 return (user * HZ * CREDITS_PER_JIFFY) / EBT_LIMIT_SCALE; in user2credits()

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