Hi Stephane, [auto build test ERROR on: tip/perf/core] [also build test ERROR on: v4.3 next-20151103]
url: https://github.com/0day-ci/linux/commits/Stephane-Eranian/perf-fix-RCU-issues-with-cgroup-monitoring-mode/20151104-121512 config: parisc-allyesconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=parisc All errors (new ones prefixed by >>): In file included from include/linux/trace_events.h:9:0, from include/trace/syscall.h:6, from include/linux/syscalls.h:81, from kernel/events/core.c:34: include/linux/perf_event.h: In function 'perf_cgroup_from_task': >> include/linux/perf_event.h:702:2: error: implicit declaration of function >> 'lockdep_is_held' [-Werror=implicit-function-declaration] bool safe = ctx ? lockdep_is_held(&ctx->lock) : true; ^ include/linux/perf_event.h:702:7: warning: unused variable 'safe' [-Wunused-variable] bool safe = ctx ? lockdep_is_held(&ctx->lock) : true; ^ cc1: some warnings being treated as errors vim +/lockdep_is_held +702 include/linux/perf_event.h 696 * this function. In other words, we cannot call this function 697 * if there is no cgroup event for the current CPU context. 698 */ 699 static inline struct perf_cgroup * 700 perf_cgroup_from_task(struct task_struct *task, struct perf_event_context *ctx) 701 { > 702 bool safe = ctx ? lockdep_is_held(&ctx->lock) : true; 703 return container_of(task_css_check(task, perf_event_cgrp_id, safe), 704 struct perf_cgroup, css); 705 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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