linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2017-10-07	bpf: add a test case for helper bpf_perf_prog_read_value	Yonghong Song	1	-0/+10
	The bpf sample program trace_event is enhanced to use the new helper to print out enabled/running time. Signed-off-by: Yonghong Song <yhs@fb.com> Acked-by: Alexei Starovoitov <ast@fb.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-28	bpf/samples: Fix PT_REGS_IP on s390x and use it	Michael Holzheu	1	-1/+1
	The files "sampleip_kern.c" and "trace_event_kern.c" directly access "ctx->regs.ip" which is not available on s390x. Fix this and use the PT_REGS_IP() macro instead. Also fix the macro for s390x and use "psw.addr" from "pt_regs". Reported-by: Zvonko Kosic <zvonko.kosic@de.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-02	samples/bpf: add perf_event+bpf example	Alexei Starovoitov	1	-0/+65
	The bpf program is called 50 times a second and does hashmap[kern&user_stackid]++ It's primary purpose to check that key bpf helpers like map lookup, update, get_stackid, trace_printk and ctx access are all working. It checks: - PERF_COUNT_HW_CPU_CYCLES on all cpus - PERF_COUNT_HW_CPU_CYCLES for current process and inherited perf_events to children - PERF_COUNT_SW_CPU_CLOCK on all cpus - PERF_COUNT_SW_CPU_CLOCK for current process Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>