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| author | Kaixu Xia <xiakaixu@huawei.com> | 2015-08-12 09:37:53 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-08-12 16:39:12 -0700 |
| commit | 5ed3ccbd5ac11414d61c16182718e68868becc16 (patch) | |
| tree | df41b5ddd7767528d1a26b204dca9586c9008524 /samples/bpf/tracex6_kern.c | |
| parent | 47b344b27a003fcdaccbdc07b3d558a7ccdfec04 (diff) | |
| download | linux-stable-5ed3ccbd5ac11414d61c16182718e68868becc16.tar.gz linux-stable-5ed3ccbd5ac11414d61c16182718e68868becc16.tar.bz2 linux-stable-5ed3ccbd5ac11414d61c16182718e68868becc16.zip | |
bpf: fix build warnings and add function read_trace_pipe()
There are two improvements in this patch:
1. Fix the build warnings;
2. Add function read_trace_pipe() to print the result on
the screen;
Before this patch, we can get the result through /sys/kernel/de
bug/tracing/trace_pipe and get nothing on the screen.
By applying this patch, the result can be printed on the screen.
$ ./tracex6
...
tracex6-705 [003] d..1 131.428593: : CPU-3 19981414
sshd-683 [000] d..1 131.428727: : CPU-0 221682321
sshd-683 [000] d..1 131.428821: : CPU-0 221808766
sshd-683 [000] d..1 131.428950: : CPU-0 221982984
sshd-683 [000] d..1 131.429045: : CPU-0 222111851
tracex6-705 [003] d..1 131.429168: : CPU-3 20757551
sshd-683 [000] d..1 131.429170: : CPU-0 222281240
sshd-683 [000] d..1 131.429261: : CPU-0 222403340
sshd-683 [000] d..1 131.429378: : CPU-0 222561024
...
Signed-off-by: Kaixu Xia <xiakaixu@huawei.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/tracex6_kern.c')
| -rw-r--r-- | samples/bpf/tracex6_kern.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/samples/bpf/tracex6_kern.c b/samples/bpf/tracex6_kern.c index 23d1cffaf249..be479c4af9e2 100644 --- a/samples/bpf/tracex6_kern.c +++ b/samples/bpf/tracex6_kern.c @@ -1,3 +1,4 @@ +#include <linux/ptrace.h> #include <linux/version.h> #include <uapi/linux/bpf.h> #include "bpf_helpers.h" |