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authorLinus Torvalds <torvalds@linux-foundation.org>2017-11-15 11:56:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-15 11:56:19 -0800
commit5bbcc0f595fadb4cac0eddc4401035ec0bd95b09 (patch)
tree3b65e490cc36a6c6fecac1fa24d9e0ac9ced4455 /kernel/events/core.c
parent892204e06cb9e89fbc4b299a678f9ca358e97cac (diff)
parent50895b9de1d3e0258e015e8e55128d835d9a9f19 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller: "Highlights: 1) Maintain the TCP retransmit queue using an rbtree, with 1GB windows at 100Gb this really has become necessary. From Eric Dumazet. 2) Multi-program support for cgroup+bpf, from Alexei Starovoitov. 3) Perform broadcast flooding in hardware in mv88e6xxx, from Andrew Lunn. 4) Add meter action support to openvswitch, from Andy Zhou. 5) Add a data meta pointer for BPF accessible packets, from Daniel Borkmann. 6) Namespace-ify almost all TCP sysctl knobs, from Eric Dumazet. 7) Turn on Broadcom Tags in b53 driver, from Florian Fainelli. 8) More work to move the RTNL mutex down, from Florian Westphal. 9) Add 'bpftool' utility, to help with bpf program introspection. From Jakub Kicinski. 10) Add new 'cpumap' type for XDP_REDIRECT action, from Jesper Dangaard Brouer. 11) Support 'blocks' of transformations in the packet scheduler which can span multiple network devices, from Jiri Pirko. 12) TC flower offload support in cxgb4, from Kumar Sanghvi. 13) Priority based stream scheduler for SCTP, from Marcelo Ricardo Leitner. 14) Thunderbolt networking driver, from Amir Levy and Mika Westerberg. 15) Add RED qdisc offloadability, and use it in mlxsw driver. From Nogah Frankel. 16) eBPF based device controller for cgroup v2, from Roman Gushchin. 17) Add some fundamental tracepoints for TCP, from Song Liu. 18) Remove garbage collection from ipv6 route layer, this is a significant accomplishment. From Wei Wang. 19) Add multicast route offload support to mlxsw, from Yotam Gigi" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2177 commits) tcp: highest_sack fix geneve: fix fill_info when link down bpf: fix lockdep splat net: cdc_ncm: GetNtbFormat endian fix openvswitch: meter: fix NULL pointer dereference in ovs_meter_cmd_reply_start netem: remove unnecessary 64 bit modulus netem: use 64 bit divide by rate tcp: Namespace-ify sysctl_tcp_default_congestion_control net: Protect iterations over net::fib_notifier_ops in fib_seq_sum() ipv6: set all.accept_dad to 0 by default uapi: fix linux/tls.h userspace compilation error usbnet: ipheth: prevent TX queue timeouts when device not ready vhost_net: conditionally enable tx polling uapi: fix linux/rxrpc.h userspace compilation errors net: stmmac: fix LPI transitioning for dwmac4 atm: horizon: Fix irq release error net-sysfs: trigger netlink notification on ifalias change via sysfs openvswitch: Using kfree_rcu() to simplify the code openvswitch: Make local function ovs_nsh_key_attr_size() static openvswitch: Fix return value check in ovs_meter_cmd_features() ...
Diffstat (limited to 'kernel/events/core.c')
-rw-r--r--kernel/events/core.c31
1 files changed, 10 insertions, 21 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 4c39c05e029a..3939a4674e0a 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -3601,7 +3601,6 @@ int perf_event_read_local(struct perf_event *event, u64 *value,
goto out;
}
-
/*
* If the event is currently on this CPU, its either a per-task event,
* or local to this CPU. Furthermore it means its ACTIVE (otherwise
@@ -7867,11 +7866,9 @@ void perf_trace_run_bpf_submit(void *raw_data, int size, int rctx,
struct pt_regs *regs, struct hlist_head *head,
struct task_struct *task)
{
- struct bpf_prog *prog = call->prog;
-
- if (prog) {
+ if (bpf_prog_array_valid(call)) {
*(struct pt_regs **)raw_data = regs;
- if (!trace_call_bpf(prog, raw_data) || hlist_empty(head)) {
+ if (!trace_call_bpf(call, raw_data) || hlist_empty(head)) {
perf_swevent_put_recursion_context(rctx);
return;
}
@@ -8060,13 +8057,11 @@ static int perf_event_set_bpf_prog(struct perf_event *event, u32 prog_fd)
{
bool is_kprobe, is_tracepoint, is_syscall_tp;
struct bpf_prog *prog;
+ int ret;
if (event->attr.type != PERF_TYPE_TRACEPOINT)
return perf_event_set_bpf_handler(event, prog_fd);
- if (event->tp_event->prog)
- return -EEXIST;
-
is_kprobe = event->tp_event->flags & TRACE_EVENT_FL_UKPROBE;
is_tracepoint = event->tp_event->flags & TRACE_EVENT_FL_TRACEPOINT;
is_syscall_tp = is_syscall_trace_event(event->tp_event);
@@ -8094,26 +8089,20 @@ static int perf_event_set_bpf_prog(struct perf_event *event, u32 prog_fd)
return -EACCES;
}
}
- event->tp_event->prog = prog;
- event->tp_event->bpf_prog_owner = event;
- return 0;
+ ret = perf_event_attach_bpf_prog(event, prog);
+ if (ret)
+ bpf_prog_put(prog);
+ return ret;
}
static void perf_event_free_bpf_prog(struct perf_event *event)
{
- struct bpf_prog *prog;
-
- perf_event_free_bpf_handler(event);
-
- if (!event->tp_event)
+ if (event->attr.type != PERF_TYPE_TRACEPOINT) {
+ perf_event_free_bpf_handler(event);
return;
-
- prog = event->tp_event->prog;
- if (prog && event->tp_event->bpf_prog_owner == event) {
- event->tp_event->prog = NULL;
- bpf_prog_put(prog);
}
+ perf_event_detach_bpf_prog(event);
}
#else