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authorSteven Rostedt <rostedt@goodmis.org>2015-11-10 21:28:17 +0100
committerDavid S. Miller <davem@davemloft.net>2015-11-10 21:40:14 +0100
commita31d82d85afdcbdb8c4128dfd6146992dc6b3576 (patch)
tree7ad80ea8b8e046dcde549b55d70d059aea031617 /net
parentqed: select ZLIB_INFLATE (diff)
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bpf_trace: Make dependent on PERF_EVENTS
Arnd Bergmann reported: In my ARM randconfig tests, I'm getting a build error for newly added code in bpf_perf_event_read and bpf_perf_event_output whenever CONFIG_PERF_EVENTS is disabled: kernel/trace/bpf_trace.c: In function 'bpf_perf_event_read': kernel/trace/bpf_trace.c:203:11: error: 'struct perf_event' has no member named 'oncpu' if (event->oncpu != smp_processor_id() || ^ kernel/trace/bpf_trace.c:204:11: error: 'struct perf_event' has no member named 'pmu' event->pmu->count) This can happen when UPROBE_EVENT is enabled but KPROBE_EVENT is disabled. I'm not sure if that is a configuration we care about, otherwise we could prevent this case from occuring by adding Kconfig dependencies. Looking at this further, it's really that UPROBE_EVENT enables PERF_EVENTS. By just having BPF_EVENTS depend on PERF_EVENTS, then all is fine. Link: http://lkml.kernel.org/r/4525348.Aq9YoXkChv@wuerfel Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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