Messages in this thread | | | Date | Fri, 8 Jan 2016 05:08:46 +0800 | From | kbuild test robot <> | Subject | Re: [PATCH V2 1/8] perf: Add PERF_SAMPLE_PHYS_ADDR |
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Hi Kan,
[auto build test WARNING on tip/perf/core] [also build test WARNING on v4.4-rc8 next-20160107] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/kan-liang-intel-com/perf-Add-PERF_SAMPLE_PHYS_ADDR/20160108-045715 config: i386-tinyconfig (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386
All warnings (new ones prefixed by >>):
arch/x86/kernel/cpu/perf_event_intel_ds.c: In function 'setup_pebs_sample_data': >> arch/x86/kernel/cpu/perf_event_intel_ds.c:1087:41: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] data->phys_addr = (u64)virt_to_phys((void *)data->addr); ^
vim +1087 arch/x86/kernel/cpu/perf_event_intel_ds.c
1071 regs->ip = pebs->real_ip; 1072 regs->flags |= PERF_EFLAGS_EXACT; 1073 } else if (event->attr.precise_ip > 1 && intel_pmu_pebs_fixup_ip(regs)) 1074 regs->flags |= PERF_EFLAGS_EXACT; 1075 else 1076 regs->flags &= ~PERF_EFLAGS_EXACT; 1077 1078 if ((sample_type & PERF_SAMPLE_ADDR) && 1079 x86_pmu.intel_cap.pebs_format >= 1) 1080 data->addr = pebs->dla; 1081 1082 if ((sample_type & PERF_SAMPLE_PHYS_ADDR) && (data->addr != 0)) { 1083 if (data->addr >= TASK_SIZE) { 1084 /* If it's vmalloc()d memory, leave phys_addr as 0 */ 1085 if (virt_addr_valid(data->addr) && 1086 !(data->addr >= VMALLOC_START && data->addr < VMALLOC_END)) > 1087 data->phys_addr = (u64)virt_to_phys((void *)data->addr); 1088 } else { 1089 /* 1090 * Walking the pages tables for user address. 1091 * Interrupts are disabled, so it prevents any tear down 1092 * of the page tables. 1093 * Try IRQ-safe __get_user_pages_fast first. 1094 * If failed, leave phys_addr as 0. 1095 */
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