From: Steven Rostedt Date: Tue, 10 Nov 2015 20:28:17 +0000 (-0500) Subject: bpf_trace: Make dependent on PERF_EVENTS X-Git-Tag: Ubuntu-5.13.0-19.19~16901^2~1 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=a31d82d85afdcbdb8c4128dfd6146992dc6b3576;p=mirror_ubuntu-jammy-kernel.git 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 Signed-off-by: Steven Rostedt Signed-off-by: David S. Miller --- diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 1153c43428f3..f5727b586c8e 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -434,7 +434,7 @@ config UPROBE_EVENT config BPF_EVENTS depends on BPF_SYSCALL - depends on KPROBE_EVENT || UPROBE_EVENT + depends on (KPROBE_EVENT || UPROBE_EVENT) && PERF_EVENTS bool default y help