diff options
| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-09-29 05:24:10 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-09-29 05:24:10 -0400 |
| commit | cf09e3c904bf424f8b6a8203958e09bf7d9bcbc0 (patch) | |
| tree | 5e9936b3de36aa222b52a9bca366a43d98730ffd /arch/parisc/kernel/processor.c | |
| parent | d5426f4c2ebac8cf05de43988c3fccddbee13d28 (diff) | |
| parent | e19b205be43d11bff638cad4487008c48d21c103 (diff) | |
Merge tag 'v4.14-rc2' into patchwork
Linux 4.14-rc2
* tag 'v4.14-rc2': (12066 commits)
Linux 4.14-rc2
tpm: ibmvtpm: simplify crq initialization and document crq format
tpm: replace msleep() with usleep_range() in TPM 1.2/2.0 generic drivers
Documentation: tpm: add powered-while-suspended binding documentation
tpm: tpm_crb: constify acpi_device_id.
tpm: vtpm: constify vio_device_id
security: fix description of values returned by cap_inode_need_killpriv
x86/asm: Fix inline asm call constraints for Clang
objtool: Handle another GCC stack pointer adjustment bug
inet: fix improper empty comparison
net: use inet6_rcv_saddr to compare sockets
net: set tb->fast_sk_family
net: orphan frags on stand-alone ptype in dev_queue_xmit_nit
MAINTAINERS: update git tree locations for ieee802154 subsystem
SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags
SMB3: handle new statx fields
arch: remove unused *_segments() macros/functions
parisc: Unbreak bootloader due to gcc-7 optimizations
parisc: Reintroduce option to gzip-compress the kernel
apparmor: fix apparmorfs DAC access permissions
...
Diffstat (limited to 'arch/parisc/kernel/processor.c')
| -rw-r--r-- | arch/parisc/kernel/processor.c | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c index 0ab32779dfa7..e120d63c1b28 100644 --- a/arch/parisc/kernel/processor.c +++ b/arch/parisc/kernel/processor.c @@ -30,6 +30,7 @@ #include <linux/mm.h> #include <linux/module.h> #include <linux/seq_file.h> +#include <linux/random.h> #include <linux/slab.h> #include <linux/cpu.h> #include <asm/param.h> @@ -89,7 +90,7 @@ init_percpu_prof(unsigned long cpunum) * (return 1). If so, initialize the chip and tell other partners in crime * they have work to do. */ -static int processor_probe(struct parisc_device *dev) +static int __init processor_probe(struct parisc_device *dev) { unsigned long txn_addr; unsigned long cpuid; @@ -237,28 +238,45 @@ static int processor_probe(struct parisc_device *dev) */ void __init collect_boot_cpu_data(void) { + unsigned long cr16_seed; + memset(&boot_cpu_data, 0, sizeof(boot_cpu_data)); + cr16_seed = get_cycles(); + add_device_randomness(&cr16_seed, sizeof(cr16_seed)); + boot_cpu_data.cpu_hz = 100 * PAGE0->mem_10msec; /* Hz of this PARISC */ /* get CPU-Model Information... */ #define p ((unsigned long *)&boot_cpu_data.pdc.model) - if (pdc_model_info(&boot_cpu_data.pdc.model) == PDC_OK) + if (pdc_model_info(&boot_cpu_data.pdc.model) == PDC_OK) { printk(KERN_INFO "model %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n", p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8]); + + add_device_randomness(&boot_cpu_data.pdc.model, + sizeof(boot_cpu_data.pdc.model)); + } #undef p - if (pdc_model_versions(&boot_cpu_data.pdc.versions, 0) == PDC_OK) + if (pdc_model_versions(&boot_cpu_data.pdc.versions, 0) == PDC_OK) { printk(KERN_INFO "vers %08lx\n", boot_cpu_data.pdc.versions); - if (pdc_model_cpuid(&boot_cpu_data.pdc.cpuid) == PDC_OK) + add_device_randomness(&boot_cpu_data.pdc.versions, + sizeof(boot_cpu_data.pdc.versions)); + } + + if (pdc_model_cpuid(&boot_cpu_data.pdc.cpuid) == PDC_OK) { printk(KERN_INFO "CPUID vers %ld rev %ld (0x%08lx)\n", (boot_cpu_data.pdc.cpuid >> 5) & 127, boot_cpu_data.pdc.cpuid & 31, boot_cpu_data.pdc.cpuid); + add_device_randomness(&boot_cpu_data.pdc.cpuid, + sizeof(boot_cpu_data.pdc.cpuid)); + } + if (pdc_model_capabilities(&boot_cpu_data.pdc.capabilities) == PDC_OK) printk(KERN_INFO "capabilities 0x%lx\n", boot_cpu_data.pdc.capabilities); @@ -299,7 +317,7 @@ void __init collect_boot_cpu_data(void) * * o Enable CPU profiling hooks. */ -int init_per_cpu(int cpunum) +int __init init_per_cpu(int cpunum) { int ret; struct pdc_coproc_cfg coproc_cfg; @@ -414,12 +432,12 @@ show_cpuinfo (struct seq_file *m, void *v) return 0; } -static const struct parisc_device_id processor_tbl[] = { +static const struct parisc_device_id processor_tbl[] __initconst = { { HPHW_NPROC, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, SVERSION_ANY_ID }, { 0, } }; -static struct parisc_driver cpu_driver = { +static struct parisc_driver cpu_driver __refdata = { .name = "CPU", .id_table = processor_tbl, .probe = processor_probe |
