Yonghong Song c195651e56 bpf: add bpf_get_stack helper ...

Currently, stackmap and bpf_get_stackid helper are provided
for bpf program to get the stack trace. This approach has
a limitation though. If two stack traces have the same hash,
only one will get stored in the stackmap table,
so some stack traces are missing from user perspective.

This patch implements a new helper, bpf_get_stack, will
send stack traces directly to bpf program. The bpf program
is able to see all stack traces, and then can do in-kernel
processing or send stack traces to user space through
shared map or bpf_perf_event_output.

Acked-by: Alexei Starovoitov <ast@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

2018-04-29 08:45:53 -07:00

..

arraymap.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2018-04-25 23:04:22 -04:00

bpf_lru_list.c

bpf: lru: Lower the PERCPU_NR_SCANS from 16 to 4

2017-04-17 13:55:52 -04:00

bpf_lru_list.h

bpf: Only set node->ref = 1 if it has not been set

2017-09-01 09:57:39 -07:00

btf.c

bpf: btf: Clean up btf.h in uapi

2018-04-23 11:32:01 +02:00

cgroup.c

bpf: Hooks for sys_bind

2018-03-31 02:15:18 +02:00

core.c

bpf: add bpf_get_stack helper

2018-04-29 08:45:53 -07:00

cpumap.c

xdp: transition into using xdp_frame for return API

2018-04-17 10:50:29 -04:00

devmap.c

bpf: add helper for copying attrs to struct bpf_map

2018-01-14 23:36:29 +01:00

disasm.c

bpf: Remove struct bpf_verifier_env argument from print_bpf_insn

2018-03-23 17:38:57 +01:00

disasm.h

bpf: Remove struct bpf_verifier_env argument from print_bpf_insn

2018-03-23 17:38:57 +01:00

hashtab.c

bpf: add helper for copying attrs to struct bpf_map

2018-01-14 23:36:29 +01:00

helpers.c

bpf: rename ARG_PTR_TO_STACK

2017-01-09 16:56:27 -05:00

inode.c

bpf: btf: Add pretty print support to the basic arraymap

2018-04-19 21:46:25 +02:00

lpm_trie.c

bpf: fix rcu lockdep warning for lpm_trie map_free callback

2018-02-22 21:29:12 +01:00

Makefile

bpf: btf: Introduce BPF Type Format (BTF)

2018-04-19 21:46:24 +02:00

map_in_map.c

bpf: Add syscall lookup support for fd array and htab

2017-06-29 13:13:25 -04:00

map_in_map.h

bpf: Add syscall lookup support for fd array and htab

2017-06-29 13:13:25 -04:00

offload.c

bpf: offload: report device information about offloaded maps

2018-01-18 22:54:25 +01:00

percpu_freelist.c

bpf: fix lockdep splat

2017-11-15 19:46:32 +09:00

percpu_freelist.h

bpf: introduce percpu_freelist

2016-03-08 15:28:31 -05:00

sockmap.c

bpf: sockmap, fix double page_put on ENOMEM error in redirect path

2018-04-24 00:49:45 +02:00

stackmap.c

bpf: add bpf_get_stack helper

2018-04-29 08:45:53 -07:00

syscall.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2018-04-26 21:19:50 -04:00

tnum.c

bpf/verifier: track signed and unsigned min/max values

2017-08-08 17:51:34 -07:00

verifier.c

bpf: add bpf_get_stack helper

2018-04-29 08:45:53 -07:00