diff options
Diffstat (limited to 'arch/powerpc/perf')
| -rw-r--r-- | arch/powerpc/perf/8xx-pmu.c | 19 | ||||
| -rw-r--r-- | arch/powerpc/perf/callchain.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/perf/callchain_32.c | 1 | ||||
| -rw-r--r-- | arch/powerpc/perf/callchain_64.c | 45 | ||||
| -rw-r--r-- | arch/powerpc/perf/core-book3s.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/perf/hv-24x7.c | 96 | ||||
| -rw-r--r-- | arch/powerpc/perf/imc-pmu.c | 4 |
7 files changed, 107 insertions, 63 deletions
diff --git a/arch/powerpc/perf/8xx-pmu.c b/arch/powerpc/perf/8xx-pmu.c index 1ad03c55c88c..e53c3c161257 100644 --- a/arch/powerpc/perf/8xx-pmu.c +++ b/arch/powerpc/perf/8xx-pmu.c @@ -15,6 +15,7 @@ #include <asm/firmware.h> #include <asm/ptrace.h> #include <asm/code-patching.h> +#include <asm/inst.h> #define PERF_8xx_ID_CPU_CYCLES 1 #define PERF_8xx_ID_HW_INSTRUCTIONS 2 @@ -99,9 +100,6 @@ static int mpc8xx_pmu_add(struct perf_event *event, int flags) unsigned long target = patch_site_addr(&patch__itlbmiss_perf); patch_branch_site(&patch__itlbmiss_exit_1, target, 0); -#ifndef CONFIG_PIN_TLB_TEXT - patch_branch_site(&patch__itlbmiss_exit_2, target, 0); -#endif } val = itlb_miss_counter; break; @@ -110,8 +108,6 @@ static int mpc8xx_pmu_add(struct perf_event *event, int flags) unsigned long target = patch_site_addr(&patch__dtlbmiss_perf); patch_branch_site(&patch__dtlbmiss_exit_1, target, 0); - patch_branch_site(&patch__dtlbmiss_exit_2, target, 0); - patch_branch_site(&patch__dtlbmiss_exit_3, target, 0); } val = dtlb_miss_counter; break; @@ -170,24 +166,19 @@ static void mpc8xx_pmu_del(struct perf_event *event, int flags) case PERF_8xx_ID_ITLB_LOAD_MISS: if (atomic_dec_return(&itlb_miss_ref) == 0) { /* mfspr r10, SPRN_SPRG_SCRATCH0 */ - unsigned int insn = PPC_INST_MFSPR | __PPC_RS(R10) | - __PPC_SPR(SPRN_SPRG_SCRATCH0); + struct ppc_inst insn = ppc_inst(PPC_INST_MFSPR | __PPC_RS(R10) | + __PPC_SPR(SPRN_SPRG_SCRATCH0)); patch_instruction_site(&patch__itlbmiss_exit_1, insn); -#ifndef CONFIG_PIN_TLB_TEXT - patch_instruction_site(&patch__itlbmiss_exit_2, insn); -#endif } break; case PERF_8xx_ID_DTLB_LOAD_MISS: if (atomic_dec_return(&dtlb_miss_ref) == 0) { /* mfspr r10, SPRN_DAR */ - unsigned int insn = PPC_INST_MFSPR | __PPC_RS(R10) | - __PPC_SPR(SPRN_DAR); + struct ppc_inst insn = ppc_inst(PPC_INST_MFSPR | __PPC_RS(R10) | + __PPC_SPR(SPRN_DAR)); patch_instruction_site(&patch__dtlbmiss_exit_1, insn); - patch_instruction_site(&patch__dtlbmiss_exit_2, insn); - patch_instruction_site(&patch__dtlbmiss_exit_3, insn); } break; } diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c index dd5051015008..6c028ee513c0 100644 --- a/arch/powerpc/perf/callchain.c +++ b/arch/powerpc/perf/callchain.c @@ -11,7 +11,6 @@ #include <linux/uaccess.h> #include <linux/mm.h> #include <asm/ptrace.h> -#include <asm/pgtable.h> #include <asm/sigcontext.h> #include <asm/ucontext.h> #include <asm/vdso.h> diff --git a/arch/powerpc/perf/callchain_32.c b/arch/powerpc/perf/callchain_32.c index 8aa951003141..f7d888d39cd3 100644 --- a/arch/powerpc/perf/callchain_32.c +++ b/arch/powerpc/perf/callchain_32.c @@ -11,7 +11,6 @@ #include <linux/uaccess.h> #include <linux/mm.h> #include <asm/ptrace.h> -#include <asm/pgtable.h> #include <asm/sigcontext.h> #include <asm/ucontext.h> #include <asm/vdso.h> diff --git a/arch/powerpc/perf/callchain_64.c b/arch/powerpc/perf/callchain_64.c index df1ffd8b20f2..814d1c2c2b9c 100644 --- a/arch/powerpc/perf/callchain_64.c +++ b/arch/powerpc/perf/callchain_64.c @@ -11,7 +11,6 @@ #include <linux/uaccess.h> #include <linux/mm.h> #include <asm/ptrace.h> -#include <asm/pgtable.h> #include <asm/sigcontext.h> #include <asm/ucontext.h> #include <asm/vdso.h> @@ -26,43 +25,23 @@ */ int read_user_stack_slow(void __user *ptr, void *buf, int nb) { - int ret = -EFAULT; - pgd_t *pgdir; - pte_t *ptep, pte; - unsigned int shift; + unsigned long addr = (unsigned long) ptr; unsigned long offset; - unsigned long pfn, flags; + struct page *page; void *kaddr; - pgdir = current->mm->pgd; - if (!pgdir) - return -EFAULT; + if (get_user_page_fast_only(addr, FOLL_WRITE, &page)) { + kaddr = page_address(page); + + /* align address to page boundary */ + offset = addr & ~PAGE_MASK; - local_irq_save(flags); - ptep = find_current_mm_pte(pgdir, addr, NULL, &shift); - if (!ptep) - goto err_out; - if (!shift) - shift = PAGE_SHIFT; - - /* align address to page boundary */ - offset = addr & ((1UL << shift) - 1); - - pte = READ_ONCE(*ptep); - if (!pte_present(pte) || !pte_user(pte)) - goto err_out; - pfn = pte_pfn(pte); - if (!page_is_ram(pfn)) - goto err_out; - - /* no highmem to worry about here */ - kaddr = pfn_to_kaddr(pfn); - memcpy(buf, kaddr + offset, nb); - ret = 0; -err_out: - local_irq_restore(flags); - return ret; + memcpy(buf, kaddr + offset, nb); + put_page(page); + return 0; + } + return -EFAULT; } static int read_user_stack_64(unsigned long __user *ptr, unsigned long *ret) diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 3dcfecf858f3..13b9dd5e4a76 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -421,14 +421,14 @@ static __u64 power_pmu_bhrb_to(u64 addr) if (probe_kernel_read(&instr, (void *)addr, sizeof(instr))) return 0; - return branch_target(&instr); + return branch_target((struct ppc_inst *)&instr); } /* Userspace: need copy instruction here then translate it */ if (probe_user_read(&instr, (unsigned int __user *)addr, sizeof(instr))) return 0; - target = branch_target(&instr); + target = branch_target((struct ppc_inst *)&instr); if ((!target) || (instr & BRANCH_ABSOLUTE)) return target; diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index 573e0b309c0c..db213eb7cb02 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -20,6 +20,7 @@ #include <asm/io.h> #include <linux/byteorder/generic.h> +#include <asm/rtas.h> #include "hv-24x7.h" #include "hv-24x7-catalog.h" #include "hv-common.h" @@ -57,6 +58,65 @@ static bool is_physical_domain(unsigned domain) } } +/* + * The Processor Module Information system parameter allows transferring + * of certain processor module information from the platform to the OS. + * Refer PAPR+ document to get parameter token value as '43'. + */ + +#define PROCESSOR_MODULE_INFO 43 + +static u32 phys_sockets; /* Physical sockets */ +static u32 phys_chipspersocket; /* Physical chips per socket*/ +static u32 phys_coresperchip; /* Physical cores per chip */ + +/* + * read_24x7_sys_info() + * Retrieve the number of sockets and chips per socket and cores per + * chip details through the get-system-parameter rtas call. + */ +void read_24x7_sys_info(void) +{ + int call_status, len, ntypes; + + spin_lock(&rtas_data_buf_lock); + + /* + * Making system parameter: chips and sockets and cores per chip + * default to 1. + */ + phys_sockets = 1; + phys_chipspersocket = 1; + phys_coresperchip = 1; + + call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1, + NULL, + PROCESSOR_MODULE_INFO, + __pa(rtas_data_buf), + RTAS_DATA_BUF_SIZE); + + if (call_status != 0) { + pr_err("Error calling get-system-parameter %d\n", + call_status); + } else { + len = be16_to_cpup((__be16 *)&rtas_data_buf[0]); + if (len < 8) + goto out; + + ntypes = be16_to_cpup((__be16 *)&rtas_data_buf[2]); + + if (!ntypes) + goto out; + + phys_sockets = be16_to_cpup((__be16 *)&rtas_data_buf[4]); + phys_chipspersocket = be16_to_cpup((__be16 *)&rtas_data_buf[6]); + phys_coresperchip = be16_to_cpup((__be16 *)&rtas_data_buf[8]); + } + +out: + spin_unlock(&rtas_data_buf_lock); +} + /* Domains for which more than one result element are returned for each event. */ static bool domain_needs_aggregation(unsigned int domain) { @@ -386,6 +446,24 @@ static ssize_t device_show_string(struct device *dev, return sprintf(buf, "%s\n", (char *)d->var); } +static ssize_t sockets_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d\n", phys_sockets); +} + +static ssize_t chipspersocket_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d\n", phys_chipspersocket); +} + +static ssize_t coresperchip_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d\n", phys_coresperchip); +} + static struct attribute *device_str_attr_create_(char *name, char *str) { struct dev_ext_attribute *attr = kzalloc(sizeof(*attr), GFP_KERNEL); @@ -1032,6 +1110,9 @@ PAGE_0_ATTR(catalog_len, "%lld\n", (unsigned long long)be32_to_cpu(page_0->length) * 4096); static BIN_ATTR_RO(catalog, 0/* real length varies */); static DEVICE_ATTR_RO(domains); +static DEVICE_ATTR_RO(sockets); +static DEVICE_ATTR_RO(chipspersocket); +static DEVICE_ATTR_RO(coresperchip); static struct bin_attribute *if_bin_attrs[] = { &bin_attr_catalog, @@ -1042,6 +1123,9 @@ static struct attribute *if_attrs[] = { &dev_attr_catalog_len.attr, &dev_attr_catalog_version.attr, &dev_attr_domains.attr, + &dev_attr_sockets.attr, + &dev_attr_chipspersocket.attr, + &dev_attr_coresperchip.attr, NULL, }; @@ -1400,16 +1484,6 @@ static void h_24x7_event_read(struct perf_event *event) h24x7hw = &get_cpu_var(hv_24x7_hw); h24x7hw->events[i] = event; put_cpu_var(h24x7hw); - /* - * Clear the event count so we can compute the _change_ - * in the 24x7 raw counter value at the end of the txn. - * - * Note that we could alternatively read the 24x7 value - * now and save its value in event->hw.prev_count. But - * that would require issuing a hcall, which would then - * defeat the purpose of using the txn interface. - */ - local64_set(&event->count, 0); } put_cpu_var(hv_24x7_reqb); @@ -1615,6 +1689,8 @@ static int hv_24x7_init(void) if (r) return r; + read_24x7_sys_info(); + return 0; } diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c index eb82dda884e5..0edcfd0b491d 100644 --- a/arch/powerpc/perf/imc-pmu.c +++ b/arch/powerpc/perf/imc-pmu.c @@ -976,7 +976,7 @@ static int thread_imc_event_init(struct perf_event *event) if (event->attr.type != event->pmu->type) return -ENOENT; - if (!capable(CAP_SYS_ADMIN)) + if (!perfmon_capable()) return -EACCES; /* Sampling not supported */ @@ -1412,7 +1412,7 @@ static int trace_imc_event_init(struct perf_event *event) if (event->attr.type != event->pmu->type) return -ENOENT; - if (!capable(CAP_SYS_ADMIN)) + if (!perfmon_capable()) return -EACCES; /* Return if this is a couting event */ |