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Date:   Fri, 24 Nov 2017 10:54:18 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Hugh Dickins <hugh.dickins@...cali.co.uk>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        tipbuild@...or.com, Ingo Molnar <mingo@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>
Subject: [tip:WIP.x86/mm 37/50] arch/x86/events/intel/ds.c:296:2: note: in
 expansion of macro 'if'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/mm
head:   7d2da250f83856bbf697d58a3c10c5673e8146bc
commit: 93e8b1bed0d21ad5a5bf0e1151a9163a72f89072 [37/50] x86/mm/kaiser: Map virtually-addressed performance monitoring buffers
config: i386-randconfig-x019-201747 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        git checkout 93e8b1bed0d21ad5a5bf0e1151a9163a72f89072
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from arch/x86/include/asm/bitops.h:16:0,
                    from include/linux/bitops.h:38,
                    from arch/x86/events/intel/ds.c:2:
   arch/x86/events/intel/ds.c: In function 'dsalloc':
   arch/x86/events/intel/ds.c:296:6: error: implicit declaration of function 'kaiser_add_mapping' [-Werror=implicit-function-declaration]
     if (kaiser_add_mapping(addr, size, __PAGE_KERNEL | _PAGE_GLOBAL) < 0) {
         ^
   include/linux/compiler.h:58:30: note: in definition of macro '__trace_if'
     if (__builtin_constant_p(!!(cond)) ? !!(cond) :   \
                                 ^~~~
>> arch/x86/events/intel/ds.c:296:2: note: in expansion of macro 'if'
     if (kaiser_add_mapping(addr, size, __PAGE_KERNEL | _PAGE_GLOBAL) < 0) {
     ^~
   arch/x86/events/intel/ds.c: In function 'dsfree':
   arch/x86/events/intel/ds.c:307:2: error: implicit declaration of function 'kaiser_remove_mapping' [-Werror=implicit-function-declaration]
     kaiser_remove_mapping((unsigned long)buffer, size);
     ^~~~~~~~~~~~~~~~~~~~~
   Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:constant_test_bit
   Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:variable_test_bit
   Cyclomatic Complexity 1 arch/x86/include/asm/bitops.h:fls
   Cyclomatic Complexity 1 include/linux/log2.h:__ilog2_u32
   Cyclomatic Complexity 1 include/linux/percpu-defs.h:__this_cpu_preempt_check
   Cyclomatic Complexity 1 include/asm-generic/getorder.h:__get_order
   Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:paravirt_read_msr
   Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:paravirt_write_msr
   Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:wrmsrl
   Cyclomatic Complexity 1 arch/x86/include/asm/msr.h:wrmsr_on_cpu
   Cyclomatic Complexity 3 arch/x86/include/asm/processor.h:get_debugctlmsr
   Cyclomatic Complexity 3 arch/x86/include/asm/processor.h:update_debugctlmsr
   Cyclomatic Complexity 1 include/linux/nodemask.h:node_state
   Cyclomatic Complexity 1 include/linux/rcupdate.h:rcu_lock_acquire
   Cyclomatic Complexity 1 include/linux/rcupdate.h:rcu_lock_release
   Cyclomatic Complexity 1 include/linux/rcupdate.h:rcu_read_lock
   Cyclomatic Complexity 1 include/linux/rcupdate.h:rcu_read_unlock
   Cyclomatic Complexity 1 include/linux/gfp.h:__alloc_pages
   Cyclomatic Complexity 2 include/linux/gfp.h:__alloc_pages_node
   Cyclomatic Complexity 1 include/linux/slab.h:__kmalloc_node
   Cyclomatic Complexity 1 include/linux/slab.h:kmalloc_node
   Cyclomatic Complexity 1 include/linux/slab.h:kzalloc_node
   Cyclomatic Complexity 1 include/linux/cpu.h:cpus_read_lock
   Cyclomatic Complexity 1 include/linux/cpu.h:cpus_read_unlock
   Cyclomatic Complexity 1 include/linux/cpu.h:get_online_cpus
   Cyclomatic Complexity 1 include/linux/cpu.h:put_online_cpus
   Cyclomatic Complexity 1 include/linux/perf_event.h:perf_sample_data_init
   Cyclomatic Complexity 1 include/linux/perf_event.h:has_branch_stack
   Cyclomatic Complexity 1 arch/x86/events/intel/../perf_event.h:kernel_ip
   Cyclomatic Complexity 4 arch/x86/events/intel/../perf_event.h:set_linear_ip
   Cyclomatic Complexity 1 arch/x86/events/intel/ds.c:intel_pmu_drain_pebs_buffer
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:pebs_needs_sched_cb
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:pebs_update_threshold
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:intel_hsw_weight
   Cyclomatic Complexity 9 arch/x86/events/intel/ds.c:intel_hsw_transaction
   Cyclomatic Complexity 14 arch/x86/events/intel/ds.c:get_next_pebs_record_by_bit
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:release_ds_buffer
   Cyclomatic Complexity 7 arch/x86/events/intel/ds.c:load_latency_data
   Cyclomatic Complexity 9 arch/x86/events/intel/ds.c:precise_datala_hsw
   Cyclomatic Complexity 7 arch/x86/events/intel/ds.c:precise_store_data
   Cyclomatic Complexity 69 arch/x86/events/intel/ds.c:dsfree
   Cyclomatic Complexity 9 arch/x86/events/intel/ds.c:release_pebs_buffer
   Cyclomatic Complexity 9 arch/x86/events/intel/ds.c:release_bts_buffer
   Cyclomatic Complexity 1 arch/x86/events/intel/ds.c:alloc_ds_buffer
   Cyclomatic Complexity 70 arch/x86/events/intel/ds.c:dsalloc
   Cyclomatic Complexity 10 arch/x86/events/intel/ds.c:alloc_bts_buffer
   Cyclomatic Complexity 8 arch/x86/events/intel/ds.c:alloc_pebs_buffer
   Cyclomatic Complexity 6 arch/x86/events/intel/ds.c:pebs_update_state
   Cyclomatic Complexity 24 arch/x86/events/intel/ds.c:intel_pmu_pebs_fixup_ip
   Cyclomatic Complexity 69 arch/x86/events/intel/ds.c:setup_pebs_sample_data
   Cyclomatic Complexity 6 arch/x86/events/intel/ds.c:__intel_pmu_pebs_event
   Cyclomatic Complexity 42 arch/x86/events/intel/ds.c:intel_pmu_drain_pebs_nhm
   Cyclomatic Complexity 9 arch/x86/events/intel/ds.c:intel_pmu_drain_pebs_core
   Cyclomatic Complexity 1 arch/x86/events/intel/ds.c:intel_pmu_pebs_data_source_nhm
   Cyclomatic Complexity 2 arch/x86/events/intel/ds.c:intel_pmu_pebs_data_source_skl
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:init_debug_store_on_cpu
   Cyclomatic Complexity 2 arch/x86/events/intel/ds.c:fini_debug_store_on_cpu
   Cyclomatic Complexity 5 arch/x86/events/intel/ds.c:release_ds_buffers
   Cyclomatic Complexity 43 arch/x86/events/intel/ds.c:reserve_ds_buffers
   Cyclomatic Complexity 7 arch/x86/events/intel/ds.c:intel_pmu_enable_bts
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:intel_pmu_disable_bts
   Cyclomatic Complexity 18 arch/x86/events/intel/ds.c:intel_pmu_drain_bts_buffer
   Cyclomatic Complexity 8 arch/x86/events/intel/ds.c:intel_pebs_constraints
   Cyclomatic Complexity 4 arch/x86/events/intel/ds.c:intel_pmu_pebs_sched_task
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:intel_pmu_pebs_add
   Cyclomatic Complexity 7 arch/x86/events/intel/ds.c:intel_pmu_pebs_enable
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:intel_pmu_pebs_del
   Cyclomatic Complexity 9 arch/x86/events/intel/ds.c:intel_pmu_pebs_disable
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:intel_pmu_pebs_enable_all
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:intel_pmu_pebs_disable_all
   Cyclomatic Complexity 9 arch/x86/events/intel/ds.c:intel_ds_init
   Cyclomatic Complexity 3 arch/x86/events/intel/ds.c:perf_restore_debug_store
   cc1: some warnings being treated as errors

vim +/if +296 arch/x86/events/intel/ds.c

   285	
   286	static void *dsalloc(size_t size, gfp_t flags, int node)
   287	{
   288		unsigned int order = get_order(size);
   289		struct page *page;
   290		unsigned long addr;
   291	
   292		page = __alloc_pages_node(node, flags | __GFP_ZERO, order);
   293		if (!page)
   294			return NULL;
   295		addr = (unsigned long)page_address(page);
 > 296		if (kaiser_add_mapping(addr, size, __PAGE_KERNEL | _PAGE_GLOBAL) < 0) {
   297			__free_pages(page, order);
   298			addr = 0;
   299		}
   300		return (void *)addr;
   301	}
   302	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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