From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- tools/power/cpupower/utils/cpufreq-set.c | 339 +++++++++++++++++++++++++++++++ 1 file changed, 339 insertions(+) create mode 100644 tools/power/cpupower/utils/cpufreq-set.c (limited to 'tools/power/cpupower/utils/cpufreq-set.c') diff --git a/tools/power/cpupower/utils/cpufreq-set.c b/tools/power/cpupower/utils/cpufreq-set.c new file mode 100644 index 000000000..c5e60a39c --- /dev/null +++ b/tools/power/cpupower/utils/cpufreq-set.c @@ -0,0 +1,339 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * (C) 2004-2009 Dominik Brodowski + */ + + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "cpufreq.h" +#include "cpuidle.h" +#include "helpers/helpers.h" + +#define NORM_FREQ_LEN 32 + +static struct option set_opts[] = { + {"min", required_argument, NULL, 'd'}, + {"max", required_argument, NULL, 'u'}, + {"governor", required_argument, NULL, 'g'}, + {"freq", required_argument, NULL, 'f'}, + {"related", no_argument, NULL, 'r'}, + { }, +}; + +static void print_error(void) +{ + printf(_("Error setting new values. Common errors:\n" + "- Do you have proper administration rights? (super-user?)\n" + "- Is the governor you requested available and modprobed?\n" + "- Trying to set an invalid policy?\n" + "- Trying to set a specific frequency, but userspace governor is not available,\n" + " for example because of hardware which cannot be set to a specific frequency\n" + " or because the userspace governor isn't loaded?\n")); +}; + +struct freq_units { + char *str_unit; + int power_of_ten; +}; + +const struct freq_units def_units[] = { + {"hz", -3}, + {"khz", 0}, /* default */ + {"mhz", 3}, + {"ghz", 6}, + {"thz", 9}, + {NULL, 0} +}; + +static void print_unknown_arg(void) +{ + printf(_("invalid or unknown argument\n")); +} + +static unsigned long string_to_frequency(const char *str) +{ + char normalized[NORM_FREQ_LEN]; + const struct freq_units *unit; + const char *scan; + char *end; + unsigned long freq; + int power = 0, match_count = 0, i, cp, pad; + + while (*str == '0') + str++; + + for (scan = str; isdigit(*scan) || *scan == '.'; scan++) { + if (*scan == '.' && match_count == 0) + match_count = 1; + else if (*scan == '.' && match_count == 1) + return 0; + } + + if (*scan) { + match_count = 0; + for (unit = def_units; unit->str_unit; unit++) { + for (i = 0; + scan[i] && tolower(scan[i]) == unit->str_unit[i]; + ++i) + continue; + if (scan[i]) + continue; + match_count++; + power = unit->power_of_ten; + } + if (match_count != 1) + return 0; + } + + /* count the number of digits to be copied */ + for (cp = 0; isdigit(str[cp]); cp++) + continue; + + if (str[cp] == '.') { + while (power > -1 && isdigit(str[cp+1])) { + cp++; + power--; + } + } + if (power >= -1) { /* not enough => pad */ + pad = power + 1; + } else { /* too much => strip */ + pad = 0; + cp += power + 1; + } + /* check bounds */ + if (cp <= 0 || cp + pad > NORM_FREQ_LEN - 1) + return 0; + + /* copy digits */ + for (i = 0; i < cp; i++, str++) { + if (*str == '.') + str++; + normalized[i] = *str; + } + /* and pad */ + for (; i < cp + pad; i++) + normalized[i] = '0'; + + /* round up, down ? */ + match_count = (normalized[i-1] >= '5'); + /* and drop the decimal part */ + normalized[i-1] = 0; /* cp > 0 && pad >= 0 ==> i > 0 */ + + /* final conversion (and applying rounding) */ + errno = 0; + freq = strtoul(normalized, &end, 10); + if (errno) + return 0; + else { + if (match_count && freq != ULONG_MAX) + freq++; + return freq; + } +} + +static int do_new_policy(unsigned int cpu, struct cpufreq_policy *new_pol) +{ + struct cpufreq_policy *cur_pol = cpufreq_get_policy(cpu); + int ret; + + if (!cur_pol) { + printf(_("wrong, unknown or unhandled CPU?\n")); + return -EINVAL; + } + + if (!new_pol->min) + new_pol->min = cur_pol->min; + + if (!new_pol->max) + new_pol->max = cur_pol->max; + + if (!new_pol->governor) + new_pol->governor = cur_pol->governor; + + ret = cpufreq_set_policy(cpu, new_pol); + + cpufreq_put_policy(cur_pol); + + return ret; +} + + +static int do_one_cpu(unsigned int cpu, struct cpufreq_policy *new_pol, + unsigned long freq, unsigned int pc) +{ + switch (pc) { + case 0: + return cpufreq_set_frequency(cpu, freq); + + case 1: + /* if only one value of a policy is to be changed, we can + * use a "fast path". + */ + if (new_pol->min) + return cpufreq_modify_policy_min(cpu, new_pol->min); + else if (new_pol->max) + return cpufreq_modify_policy_max(cpu, new_pol->max); + else if (new_pol->governor) + return cpufreq_modify_policy_governor(cpu, + new_pol->governor); + + default: + /* slow path */ + return do_new_policy(cpu, new_pol); + } +} + +int cmd_freq_set(int argc, char **argv) +{ + extern char *optarg; + extern int optind, opterr, optopt; + int ret = 0, cont = 1; + int double_parm = 0, related = 0, policychange = 0; + unsigned long freq = 0; + char gov[20]; + unsigned int cpu; + + struct cpufreq_policy new_pol = { + .min = 0, + .max = 0, + .governor = NULL, + }; + + /* parameter parsing */ + do { + ret = getopt_long(argc, argv, "d:u:g:f:r", set_opts, NULL); + switch (ret) { + case '?': + print_unknown_arg(); + return -EINVAL; + case -1: + cont = 0; + break; + case 'r': + if (related) + double_parm++; + related++; + break; + case 'd': + if (new_pol.min) + double_parm++; + policychange++; + new_pol.min = string_to_frequency(optarg); + if (new_pol.min == 0) { + print_unknown_arg(); + return -EINVAL; + } + break; + case 'u': + if (new_pol.max) + double_parm++; + policychange++; + new_pol.max = string_to_frequency(optarg); + if (new_pol.max == 0) { + print_unknown_arg(); + return -EINVAL; + } + break; + case 'f': + if (freq) + double_parm++; + freq = string_to_frequency(optarg); + if (freq == 0) { + print_unknown_arg(); + return -EINVAL; + } + break; + case 'g': + if (new_pol.governor) + double_parm++; + policychange++; + if ((strlen(optarg) < 3) || (strlen(optarg) > 18)) { + print_unknown_arg(); + return -EINVAL; + } + if ((sscanf(optarg, "%19s", gov)) != 1) { + print_unknown_arg(); + return -EINVAL; + } + new_pol.governor = gov; + break; + } + } while (cont); + + /* parameter checking */ + if (double_parm) { + printf("the same parameter was passed more than once\n"); + return -EINVAL; + } + + if (freq && policychange) { + printf(_("the -f/--freq parameter cannot be combined with -d/--min, -u/--max or\n" + "-g/--governor parameters\n")); + return -EINVAL; + } + + if (!freq && !policychange) { + printf(_("At least one parameter out of -f/--freq, -d/--min, -u/--max, and\n" + "-g/--governor must be passed\n")); + return -EINVAL; + } + + /* Default is: set all CPUs */ + if (bitmask_isallclear(cpus_chosen)) + bitmask_setall(cpus_chosen); + + /* Also set frequency settings for related CPUs if -r is passed */ + if (related) { + for (cpu = bitmask_first(cpus_chosen); + cpu <= bitmask_last(cpus_chosen); cpu++) { + struct cpufreq_affected_cpus *cpus; + + if (!bitmask_isbitset(cpus_chosen, cpu) || + cpupower_is_cpu_online(cpu) != 1) + continue; + + cpus = cpufreq_get_related_cpus(cpu); + if (!cpus) + break; + while (cpus->next) { + bitmask_setbit(cpus_chosen, cpus->cpu); + cpus = cpus->next; + } + /* Set the last cpu in related cpus list */ + bitmask_setbit(cpus_chosen, cpus->cpu); + cpufreq_put_related_cpus(cpus); + } + } + + get_cpustate(); + + /* loop over CPUs */ + for (cpu = bitmask_first(cpus_chosen); + cpu <= bitmask_last(cpus_chosen); cpu++) { + + if (!bitmask_isbitset(cpus_chosen, cpu) || + cpupower_is_cpu_online(cpu) != 1) + continue; + + printf(_("Setting cpu: %d\n"), cpu); + ret = do_one_cpu(cpu, &new_pol, freq, policychange); + if (ret) { + print_error(); + return ret; + } + } + + print_offline_cpus(); + + return 0; +} -- cgit v1.2.3