diff options
author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-11-23 09:04:05 +0100 |
---|---|---|
committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-11-23 09:04:05 +0100 |
commit | 92907cbbef8625bb3998d1eb385fc88f23c97a3f (patch) | |
tree | 15626ff9287e37c3cb81c7286d6db5a7fd77c854 /samples/bpf/trace_output_kern.c | |
parent | 15fbfccfe92c62ae8d1ecc647c44157ed01ac02e (diff) | |
parent | 1ec218373b8ebda821aec00bb156a9c94fad9cd4 (diff) |
Merge tag 'v4.4-rc2' into drm-intel-next-queued
Linux 4.4-rc2
Backmerge to get at
commit 1b0e3a049efe471c399674fd954500ce97438d30
Author: Imre Deak <imre.deak@intel.com>
Date: Thu Nov 5 23:04:11 2015 +0200
drm/i915/skl: disable display side power well support for now
so that we can proplery re-eanble skl power wells in -next.
Conflicts are just adjacent lines changed, except for intel_fbdev.c
where we need to interleave the changs. Nothing nefarious.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'samples/bpf/trace_output_kern.c')
-rw-r--r-- | samples/bpf/trace_output_kern.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/samples/bpf/trace_output_kern.c b/samples/bpf/trace_output_kern.c new file mode 100644 index 000000000000..8d8d1ec429eb --- /dev/null +++ b/samples/bpf/trace_output_kern.c @@ -0,0 +1,31 @@ +#include <linux/ptrace.h> +#include <linux/version.h> +#include <uapi/linux/bpf.h> +#include "bpf_helpers.h" + +struct bpf_map_def SEC("maps") my_map = { + .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY, + .key_size = sizeof(int), + .value_size = sizeof(u32), + .max_entries = 2, +}; + +SEC("kprobe/sys_write") +int bpf_prog1(struct pt_regs *ctx) +{ + struct S { + u64 pid; + u64 cookie; + } data; + + memset(&data, 0, sizeof(data)); + data.pid = bpf_get_current_pid_tgid(); + data.cookie = 0x12345678; + + bpf_perf_event_output(ctx, &my_map, 0, &data, sizeof(data)); + + return 0; +} + +char _license[] SEC("license") = "GPL"; +u32 _version SEC("version") = LINUX_VERSION_CODE; |