The patch titled cpufreq: revert "Get core affinity from acpi_processor_preregister_performance()" has been added to the -mm tree. Its filename is cpufreq-revert-get-core-affinity-from-acpi_processor_preregister_performance.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: cpufreq: revert "Get core affinity from acpi_processor_preregister_performance()" From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Breaks suspend. Cc: Mark Langsdorf <mark.langsdorf@xxxxxxx> Cc: Dave Jones <davej@xxxxxxxxxxxxxxxxx> Cc: "Rafael J. Wysocki" <rjw@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/x86/kernel/cpu/cpufreq/powernow-k8.c | 109 ++++++-------------- arch/x86/kernel/cpu/cpufreq/powernow-k8.h | 4 2 files changed, 39 insertions(+), 74 deletions(-) diff -puN arch/x86/kernel/cpu/cpufreq/powernow-k8.c~cpufreq-revert-get-core-affinity-from-acpi_processor_preregister_performance arch/x86/kernel/cpu/cpufreq/powernow-k8.c --- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c~cpufreq-revert-get-core-affinity-from-acpi_processor_preregister_performance +++ a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c @@ -29,7 +29,6 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/cpufreq.h> -#include <linux/delay.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/cpumask.h> @@ -125,8 +124,7 @@ static int query_current_values_with_pen return 0; } do { - msleep(5); - if (i++ > 1000) { + if (i++ > 10000) { dprintk("detected change pending stuck\n"); return 1; } @@ -722,7 +720,6 @@ static int find_psb_table(struct powerno data->numps = psb->numps; dprintk("numpstates: 0x%x\n", data->numps); - data->starting_core_affinity = cpumask_of_cpu(0); return fill_powernow_table(data, (struct pst_s *)(psb+1), maxvid); } /* @@ -743,29 +740,15 @@ static int find_psb_table(struct powerno #ifdef CONFIG_X86_POWERNOW_K8_ACPI static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index) { - if (!data->acpi_data->state_count || (cpu_family == CPU_HW_PSTATE)) + if (!data->acpi_data.state_count || (cpu_family == CPU_HW_PSTATE)) return; - data->irt = (data->acpi_data->states[index].control >> IRT_SHIFT) & IRT_MASK; - data->rvo = (data->acpi_data->states[index].control >> RVO_SHIFT) & RVO_MASK; - data->exttype = (data->acpi_data->states[index].control >> EXT_TYPE_SHIFT) & EXT_TYPE_MASK; - data->plllock = (data->acpi_data->states[index].control >> PLL_L_SHIFT) & PLL_L_MASK; - data->vidmvs = 1 << ((data->acpi_data->states[index].control >> MVS_SHIFT) & MVS_MASK); - data->vstable = (data->acpi_data->states[index].control >> VST_SHIFT) & VST_MASK; -} - -static struct acpi_processor_performance *acpi_perf_data; -static int preregister_valid = 0; - -static int powernow_k8_cpu_preinit_acpi() -{ - acpi_perf_data = alloc_percpu(struct acpi_processor_performance); - - if (acpi_processor_preregister_performance(acpi_perf_data)) - return -ENODEV; - else - preregister_valid = 1; - return 0; + data->irt = (data->acpi_data.states[index].control >> IRT_SHIFT) & IRT_MASK; + data->rvo = (data->acpi_data.states[index].control >> RVO_SHIFT) & RVO_MASK; + data->exttype = (data->acpi_data.states[index].control >> EXT_TYPE_SHIFT) & EXT_TYPE_MASK; + data->plllock = (data->acpi_data.states[index].control >> PLL_L_SHIFT) & PLL_L_MASK; + data->vidmvs = 1 << ((data->acpi_data.states[index].control >> MVS_SHIFT) & MVS_MASK); + data->vstable = (data->acpi_data.states[index].control >> VST_SHIFT) & VST_MASK; } static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data) @@ -773,29 +756,28 @@ static int powernow_k8_cpu_init_acpi(str struct cpufreq_frequency_table *powernow_table; int ret_val; - data->acpi_data = percpu_ptr(acpi_perf_data, data->cpu); - if (acpi_processor_register_performance(data->acpi_data, data->cpu)) { + if (acpi_processor_register_performance(&data->acpi_data, data->cpu)) { dprintk("register performance failed: bad ACPI data\n"); return -EIO; } /* verify the data contained in the ACPI structures */ - if (data->acpi_data->state_count <= 1) { + if (data->acpi_data.state_count <= 1) { dprintk("No ACPI P-States\n"); goto err_out; } - if ((data->acpi_data->control_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE) || - (data->acpi_data->status_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) { + if ((data->acpi_data.control_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE) || + (data->acpi_data.status_register.space_id != ACPI_ADR_SPACE_FIXED_HARDWARE)) { dprintk("Invalid control/status registers (%x - %x)\n", - data->acpi_data->control_register.space_id, - data->acpi_data->status_register.space_id); + data->acpi_data.control_register.space_id, + data->acpi_data.status_register.space_id); goto err_out; } /* fill in data->powernow_table */ powernow_table = kmalloc((sizeof(struct cpufreq_frequency_table) - * (data->acpi_data->state_count + 1)), GFP_KERNEL); + * (data->acpi_data.state_count + 1)), GFP_KERNEL); if (!powernow_table) { dprintk("powernow_table memory alloc failure\n"); goto err_out; @@ -808,12 +790,12 @@ static int powernow_k8_cpu_init_acpi(str if (ret_val) goto err_out_mem; - powernow_table[data->acpi_data->state_count].frequency = CPUFREQ_TABLE_END; - powernow_table[data->acpi_data->state_count].index = 0; + powernow_table[data->acpi_data.state_count].frequency = CPUFREQ_TABLE_END; + powernow_table[data->acpi_data.state_count].index = 0; data->powernow_table = powernow_table; /* fill in data */ - data->numps = data->acpi_data->state_count; + data->numps = data->acpi_data.state_count; if (first_cpu(per_cpu(cpu_core_map, data->cpu)) == data->cpu) print_basics(data); powernow_k8_acpi_pst_values(data, 0); @@ -821,32 +803,16 @@ static int powernow_k8_cpu_init_acpi(str /* notify BIOS that we exist */ acpi_processor_notify_smm(THIS_MODULE); - /* determine affinity, from ACPI if available */ - if (preregister_valid) { - if ((data->acpi_data->shared_type == CPUFREQ_SHARED_TYPE_ALL) || - (data->acpi_data->shared_type == CPUFREQ_SHARED_TYPE_ANY)) - data->starting_core_affinity = data->acpi_data->shared_cpu_map; - else - data->starting_core_affinity = cpumask_of_cpu(data->cpu); - } else { - /* best guess from family if not */ - if (cpu_family == CPU_HW_PSTATE) - data->starting_core_affinity = cpumask_of_cpu(data->cpu); - else - data->starting_core_affinity = per_cpu(cpu_core_map, data->cpu); - - } - return 0; err_out_mem: kfree(powernow_table); err_out: - acpi_processor_unregister_performance(data->acpi_data, data->cpu); + acpi_processor_unregister_performance(&data->acpi_data, data->cpu); - /* data->acpi_data->state_count informs us at ->exit() whether ACPI was used */ - data->acpi_data->state_count = 0; + /* data->acpi_data.state_count informs us at ->exit() whether ACPI was used */ + data->acpi_data.state_count = 0; return -ENODEV; } @@ -858,11 +824,11 @@ static int fill_powernow_table_pstate(st rdmsr(MSR_PSTATE_CUR_LIMIT, hi, lo); data->max_hw_pstate = (hi & HW_PSTATE_MAX_MASK) >> HW_PSTATE_MAX_SHIFT; - for (i = 0; i < data->acpi_data->state_count; i++) { + for (i = 0; i < data->acpi_data.state_count; i++) { u32 index; u32 hi = 0, lo = 0; - index = data->acpi_data->states[i].control & HW_PSTATE_MASK; + index = data->acpi_data.states[i].control & HW_PSTATE_MASK; if (index > data->max_hw_pstate) { printk(KERN_ERR PFX "invalid pstate %d - bad value %d.\n", i, index); printk(KERN_ERR PFX "Please report to BIOS manufacturer\n"); @@ -878,7 +844,7 @@ static int fill_powernow_table_pstate(st powernow_table[i].index = index; - powernow_table[i].frequency = data->acpi_data->states[i].core_frequency * 1000; + powernow_table[i].frequency = data->acpi_data.states[i].core_frequency * 1000; } return 0; } @@ -887,16 +853,16 @@ static int fill_powernow_table_fidvid(st { int i; int cntlofreq = 0; - for (i = 0; i < data->acpi_data->state_count; i++) { + for (i = 0; i < data->acpi_data.state_count; i++) { u32 fid; u32 vid; if (data->exttype) { - fid = data->acpi_data->states[i].status & EXT_FID_MASK; - vid = (data->acpi_data->states[i].status >> VID_SHIFT) & EXT_VID_MASK; + fid = data->acpi_data.states[i].status & EXT_FID_MASK; + vid = (data->acpi_data.states[i].status >> VID_SHIFT) & EXT_VID_MASK; } else { - fid = data->acpi_data->states[i].control & FID_MASK; - vid = (data->acpi_data->states[i].control >> VID_SHIFT) & VID_MASK; + fid = data->acpi_data.states[i].control & FID_MASK; + vid = (data->acpi_data.states[i].control >> VID_SHIFT) & VID_MASK; } dprintk(" %d : fid 0x%x, vid 0x%x\n", i, fid, vid); @@ -937,10 +903,10 @@ static int fill_powernow_table_fidvid(st cntlofreq = i; } - if (powernow_table[i].frequency != (data->acpi_data->states[i].core_frequency * 1000)) { + if (powernow_table[i].frequency != (data->acpi_data.states[i].core_frequency * 1000)) { printk(KERN_INFO PFX "invalid freq entries %u kHz vs. %u kHz\n", powernow_table[i].frequency, - (unsigned int) (data->acpi_data->states[i].core_frequency * 1000)); + (unsigned int) (data->acpi_data.states[i].core_frequency * 1000)); powernow_table[i].frequency = CPUFREQ_ENTRY_INVALID; continue; } @@ -950,15 +916,14 @@ static int fill_powernow_table_fidvid(st static void powernow_k8_cpu_exit_acpi(struct powernow_k8_data *data) { - if (data->acpi_data->state_count) - acpi_processor_unregister_performance(data->acpi_data, data->cpu); + if (data->acpi_data.state_count) + acpi_processor_unregister_performance(&data->acpi_data, data->cpu); } #else static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data) { return -ENODEV; } static void powernow_k8_cpu_exit_acpi(struct powernow_k8_data *data) { return; } static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index) { return; } -static int powernow_k8_cpu_preinit_acpi() { return -ENODEV; } #endif /* CONFIG_X86_POWERNOW_K8_ACPI */ /* Take a frequency, and issue the fid/vid transition command */ @@ -1163,7 +1128,7 @@ static int __cpuinit powernowk8_cpu_init * an UP version, and is deprecated by AMD. */ if (num_online_cpus() != 1) { - printk(KERN_ERR PFX "Your BIOS does not provide _PSS objects. PowerNow! does not work on SMP systems without _PSS objects. Complain to your BIOS vendor.\n"); + printk(KERN_ERR PFX "MP systems not supported by PSB BIOS structure\n"); kfree(data); return -ENODEV; } @@ -1202,7 +1167,10 @@ static int __cpuinit powernowk8_cpu_init /* run on any CPU again */ set_cpus_allowed(current, oldmask); - pol->cpus = data->starting_core_affinity; + if (cpu_family == CPU_HW_PSTATE) + pol->cpus = cpumask_of_cpu(pol->cpu); + else + pol->cpus = per_cpu(cpu_core_map, pol->cpu); data->available_cores = &(pol->cpus); /* Take a crude guess here. @@ -1321,7 +1289,6 @@ static int __cpuinit powernowk8_init(voi } if (supported_cpus == num_online_cpus()) { - powernow_k8_cpu_preinit_acpi(); printk(KERN_INFO PFX "Found %d %s " "processors (%d cpu cores) (" VERSION ")\n", num_online_nodes(), diff -puN arch/x86/kernel/cpu/cpufreq/powernow-k8.h~cpufreq-revert-get-core-affinity-from-acpi_processor_preregister_performance arch/x86/kernel/cpu/cpufreq/powernow-k8.h --- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h~cpufreq-revert-get-core-affinity-from-acpi_processor_preregister_performance +++ a/arch/x86/kernel/cpu/cpufreq/powernow-k8.h @@ -33,13 +33,12 @@ struct powernow_k8_data { #ifdef CONFIG_X86_POWERNOW_K8_ACPI /* the acpi table needs to be kept. it's only available if ACPI was * used to determine valid frequency/vid/fid states */ - struct acpi_processor_performance *acpi_data; + struct acpi_processor_performance acpi_data; #endif /* we need to keep track of associated cores, but let cpufreq * handle hotplug events - so just point at cpufreq pol->cpus * structure */ cpumask_t *available_cores; - cpumask_t starting_core_affinity; }; @@ -209,7 +208,6 @@ static int core_frequency_transition(str static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index); #ifdef CONFIG_X86_POWERNOW_K8_ACPI -static int powernow_k8_cpu_preinit_acpi(void); static int fill_powernow_table_pstate(struct powernow_k8_data *data, struct cpufreq_frequency_table *powernow_table); static int fill_powernow_table_fidvid(struct powernow_k8_data *data, struct cpufreq_frequency_table *powernow_table); #endif _ Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are get_task_comm-return-the-result.patch clone-prepare-to-recycle-clone_detached-and-clone_stopped.patch clone-prepare-to-recycle-clone_detached-and-clone_stopped-fix.patch timerfd-v3-new-timerfd-api-make-the-returned-time-to-be-the-remaining-time-till-the-next-expiration-checkpatch-fixes.patch timerfd-v3-new-timerfd-api-ia64-fix.patch timerfd-v3-new-timerfd-api-m68k-fix.patch timerfd-v3-new-timerfd-api-mips-fix.patch timerfd-v3-new-timerfd-api-arch-fixes.patch timerfd-v3-new-timerfd-api-powerpc-fix.patch timerfd-v3-new-timerfd-api-sparc64-fix.patch git-acpi.patch acpi-enable-c3-power-state-on-dell-inspiron-8200.patch acpi-ignore-acpi-video-devices-that-arent-present-in-hardware-checkpatch-fixes.patch small-acpica-extension-to-be-able-to-store-the-name-of.patch git-alsa.patch git-alsa-fixup.patch git-alsa-disable-sound-pci-ice1712-ice1724c.patch git-agpgart.patch git-agpgart-intel-agp-dont-zero-an-already-registered-resource-during-resume.patch working-3d-dri-intel-agpko-resume-for-i815-chip.patch intel_agp-add-new-chipset-ids-checkpatch-fixes.patch git-arm.patch git-audit-master.patch git-audit-printk-warning-fix.patch git-cifs.patch git-cpufreq.patch revert-agk-dm-dm-loop.patch git-powerpc.patch git-powerpc-fixup.patch include-asm-powerpc-nvramh-needs-listh.patch include-asm-powerpc-nvramh-needs-listh-fix.patch revert-gregkh-driver-atm-convert-struct-class_device-to-struct-device.patch gregkh-driver-kset-convert-to-kobj_sysfs_ops-vs-git-acpi.patch revert-gregkh-driver-pm-acquire-device-locks-prior-to-suspending.patch pm-acquire-device-locks-on-suspend-rev-3-checkpatch-fixes.patch pm-acquire-device-locks-on-suspend-rev-3-checkpatch-fixes-2.patch unbork-gregkh-driver-kset-convert-sys-devices-to-use-kset_create-vioc.patch drivers-pcmcia-i82092c-fix-up-after-pci_bus_region-changes.patch git-drm.patch intel-agp-enable-i915-recognition.patch drm-convert-from-nopage-to-fault-checkpatch-fixes.patch git-dvb.patch drivers-media-dvb-frontends-xc5000c-dont-return-garbage-from-xc5000_init.patch drivers-media-video-em28xx-em28xx-corec-fix-use-of-potentially-uninitialized-variable.patch git-dvb-fix-drivers-media-video-bt8xx-bttv-driverc-build.patch fix-jdelvare-i2c-i2c-constify-client-address-data.patch hwmon-new-chip-driver-for-ti-ads7828-a-d.patch hwmon-new-chip-driver-for-ti-ads7828-a-d-checkpatch-fixes.patch git-hid.patch revert-git-hrt.patch git-ieee1394.patch git-infiniband.patch git-infiniband-versus-driver-tree.patch git-infiniband-fix-build-with-config_infiniband_ipoib_cm=n.patch drivers-input-touchscreen-ads7846c-fix-uninitialized-var-warning.patch git-kbuild.patch git-kvm.patch git-libata-all.patch 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