On Wed, Jan 29, 2014 at 04:32:04PM +0100, Peter Zijlstra wrote:
> On Wed, Jan 29, 2014 at 03:07:44PM +0100, Peter Zijlstra wrote:
> > Let me see if I can make a 'nice' function to dump state though, it
> > might come in handy more often.
>
> Compile tested only...
This took a while, but I finally got a trace out with this debugging stuff
enabled.
Dave
ctx->type = 0
------------[ cut here ]------------
WARNING: CPU: 0 PID: 12579 at kernel/events/core.c:2539
task_ctx_sched_out+0x503/0x8a0()
Modules linked in: nf_conntrack_netlink nf_conntrack pn_pep llc2 af_key rfcomm
bnep snd_seq_dummy tun fuse hidp nfnetlink scsi_transport_iscsi can_raw can_bcm
ipt_ULOG nfc caif_socket caif af_802154 phonet af_rxrpc can pppoe pppox
ppp_generic slhc irda crc_ccitt rds rose x25 atm netrom appletalk ipx p8023
psnap p8022 llc ax25 cfg80211 snd_hda_codec_hdmi xfs snd_hda_codec_realtek
coretemp hwmon snd_hda_codec_generic x86_pkg_temp_thermal snd_hda_intel
kvm_intel snd_hda_codec kvm btusb snd_hwdep bluetooth snd_seq snd_seq_device
crct10dif_pclmul snd_pcm crc32c_intel e1000e ghash_clmulni_intel 6lowpan_iphc
libcrc32c microcode rfkill snd_timer serio_raw pcspkr usb_debug shpchp snd ptp
soundcore pps_core
CPU: 0 PID: 12579 Comm: trinity-c5 Not tainted 3.14.0-rc2+ #117
0000000000000009 0000000044d442b6 ffff88009e1b7de0 ffffffff9972b1d1
0000000000000000 ffff88009e1b7e18 ffffffff9906d0cd ffff88024d017700
ffff8801185e5898 0000000000000282 ffff88023a892e60 ffff8801185e5898
Call Trace:
[<ffffffff9972b1d1>] dump_stack+0x4e/0x7a
[<ffffffff9906d0cd>] warn_slowpath_common+0x7d/0xa0
[<ffffffff9906d1fa>] warn_slowpath_null+0x1a/0x20
[<ffffffff991458f3>] task_ctx_sched_out+0x503/0x8a0
[<ffffffff99148ea8>] perf_event_comm+0x108/0x260
[<ffffffff99148da0>] ? perf_event_fork+0x20/0x20
[<ffffffff991c4c95>] ? set_task_comm+0x25/0xc0
[<ffffffff990a4f0d>] ? get_parent_ip+0xd/0x50
[<ffffffff991c4cbf>] set_task_comm+0x4f/0xc0
[<ffffffff99086ecb>] SyS_prctl+0x22b/0x3d0
[<ffffffff9973ea2a>] tracesys+0xd4/0xd9
---[ end trace 6cce6761d7b505a6 ]---
Event (ffff880160cc6618) created by task: (null)
cpu: -1
cgrp: (null)
task: 12611/trinity-c19
group:
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Event (ffff8800308e6f60) created by task: (null)
cpu: -1
cgrp: (null)
task: 7371/trinity-main
group:
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Event (ffff8800308e2520) created by task: (null)
cpu: -1
cgrp: (null)
task: 7371/trinity-main
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Event (ffff88018cc14a40) created by task: (null)
cpu: -1
cgrp: (null)
task: 12579/trinity-c5
group:
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Event (ffff88018cc16618) created by task: (null)
cpu: -1
cgrp: (null)
task: 10057/trinity-c0
group:
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Event (ffff88018cc10000) created by task: (null)
cpu: -1
cgrp: (null)
task: 10057/trinity-c0
group:
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Event (ffff880160f00948) created by task: (null)
cpu: -1
cgrp: (null)
task: 12579/trinity-c5
group:
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Event (ffff88001768ae68) created by task: (null)
cpu: -1
cgrp: (null)
task: 12579/trinity-c5
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Event (ffff8801845bd388) created by task: (null)
cpu: -1
cgrp: (null)
task: 11027/trinity-c0
group:
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Event (ffff8801845b9bd8) created by task: (null)
cpu: -1
cgrp: (null)
task: 11027/trinity-c0
group:
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Event (ffff8801845bdcd0) created by task: (null)
cpu: -1
cgrp: (null)
task: 11027/trinity-c0
group:
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Event (ffff8801845ba520) created by task: (null)
cpu: -1
cgrp: (null)
task: 11027/trinity-c0
group:
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Event (ffff8801845bca40) created by task: (null)
cpu: -1
cgrp: (null)
task: 11027/trinity-c0
group:
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Event (ffff88017805e618) created by task: (null)
cpu: -1
cgrp: (null)
task: 11027/trinity-c0
group:
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Event (ffff88014bec5cd0) created by task: (null)
cpu: -1
cgrp: (null)
task: 10224/trinity-c0
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.sample_stack_user = 15969317,
};
Event (ffff88014bec37b0) created by task: (null)
cpu: -1
cgrp: (null)
task: 10224/trinity-c0
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Event (ffff880013f31290) created by task: (null)
cpu: -1
cgrp: (null)
task: 10224/trinity-c0
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Event (ffff880013f32e68) created by task: (null)
cpu: -1
cgrp: (null)
task: 10224/trinity-c0
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Event (ffff88015de4d388) created by task: (null)
cpu: -1
cgrp: (null)
task: 10155/trinity-c0
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Event (ffff88015de4dcd0) created by task: (null)
cpu: -1
cgrp: (null)
task: 10155/trinity-c0
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Event (ffff88015de4c0f8) created by task: (null)
cpu: -1
cgrp: (null)
task: 10155/trinity-c0
group:
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Event (ffff880151288000) created by task: (null)
cpu: -1
cgrp: (null)
task: 10155/trinity-c0
group:
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Event (ffff88015128dcd0) created by task: (null)
cpu: -1
cgrp: (null)
task: 10155/trinity-c0
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Event (ffff880017688948) created by task: (null)
cpu: -1
cgrp: (null)
task: 10057/trinity-c0
group:
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Event (ffff880187472e68) created by task: (null)
cpu: -1
cgrp: (null)
task: 31680/trinity-c0
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Event (ffff880187472520) created by task: (null)
cpu: -1
cgrp: (null)
task: 31680/trinity-c0
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Event (ffff880187475388) created by task: (null)
cpu: -1
cgrp: (null)
task: 31680/trinity-c0
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Event (ffff880187475cd0) created by task: (null)
cpu: -1
cgrp: (null)
task: 31680/trinity-c0
group:
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Event (ffff880187471290) created by task: (null)
cpu: -1
cgrp: (null)
task: 31680/trinity-c0
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Event (ffff88001da78948) created by task: (null)
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
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Event (ffff88001da7d388) created by task: (null)
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
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Event (ffff880203e840f8) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
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Event (ffff8800295fdcd0) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
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Event (ffff8800295fef60) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
group:
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Event (ffff8800295fe618) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
group:
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Event (ffff8800295f9290) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
group:
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.mmap_data = 1,
.sample_id_all = 1,
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.wakeup_events = 12470896,
.config2 = 0x9b9b9b9b9b,
};
Event (ffff8800295fd388) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
group:
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};
Event (ffff88014be41bd8) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
group:
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};
Event (ffff88014be40948) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
group:
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};
Event (ffff88014be437b0) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
group:
attr: {
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};
Event (ffff88014be42520) created by task: 7365/trinity-main
cpu: -1
cgrp: (null)
task: 7365/trinity-main
group:
attr: {
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Event (ffff880001d737b0) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 7371/trinity-main
group:
attr: {
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.task = 1,
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};
Event (ffff880001d75388) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 7371/trinity-main
group:
attr: {
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};
Event (ffff88001dbedcd0) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 10215/trinity-c0
group:
attr: {
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Event (ffff88001dbeb7b0) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 7371/trinity-main
group:
attr: {
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Event (ffff88001dbe9290) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 10215/trinity-c0
group:
attr: {
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Event (ffff88001dbeca40) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 7371/trinity-main
group:
attr: {
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};
Event (ffff880184ccd388) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 7371/trinity-main
group:
attr: {
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};
Event (ffff880184cca520) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 7371/trinity-main
group:
attr: {
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Event (ffff880184ccb7b0) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 7371/trinity-main
group:
attr: {
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};
Event (ffff880151b60948) created by task: 7371/trinity-main
cpu: -1
cgrp: (null)
task: 7371/trinity-main
group:
attr: {
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};
Event (ffff880187518948) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
attr: {
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};
Event (ffff88018751ca40) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
attr: {
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};
Event (ffff880187519290) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
attr: {
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};
Event (ffff88018751b7b0) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 21559/trinity-c0
group:
attr: {
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};
Event (ffff88018751c0f8) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
attr: {
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};
Event (ffff88018751e618) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
attr: {
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};
Event (ffff88018751ae68) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
attr: {
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};
Event (ffff88018751d388) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
attr: {
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};
Event (ffff8801007d5cd0) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 7423/trinity-main
group:
attr: {
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};
Event (ffff8801007d6f60) created by task: 7423/trinity-main
cpu: -1
cgrp: (null)
task: 21559/trinity-c0
group:
attr: {
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.sample_id_all = 1,
.exclude_host = 1,
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.config2 = 0xf7b96f3ad77bde00,
.branch_sample_type = 0x252525252525,
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.sample_stack_user = 15445001,
};
Event (ffff8801565740f8) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
attr: {
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.wakeup_watermark = 654166,
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};
Event (ffff880028095cd0) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
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};
Event (ffff880028090000) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
attr: {
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};
Event (ffff880193711bd8) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
attr: {
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.wakeup_watermark = 65534,
.config2 = 0x800000000000d045,
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.sample_regs_user = 0x8800000002000000,
.sample_stack_user = 15969317,
};
Event (ffff880193710000) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
attr: {
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.wakeup_events = 65534,
.config2 = 0x1,
};
Event (ffff880193716618) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
attr: {
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.wakeup_watermark = 472368239,
};
Event (ffff88009e1a9bd8) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
attr: {
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};
Event (ffff880193714a40) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
attr: {
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.bp_type = 3,
.bp_addr = 0x7fe9948b9000,
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};
Event (ffff880193710948) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
attr: {
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};
Event (ffff880193711290) created by task: 7413/trinity-main
cpu: -1
cgrp: (null)
task: 7413/trinity-main
group:
attr: {
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.config1 = 0x84000000000000fa,
};
Event (ffff880013e20948) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
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};
Event (ffff880013e21290) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
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.task = 1,
.watermark = 1,
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.bp_type = 2,
.bp_len = 1,
};
Event (ffff880013e24a40) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
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.exclude_host = 1,
.exclude_callchain_kernel = 1,
.exclude_callchain_user = 1,
.wakeup_watermark = 49254,
.config2 = 0xffffffffffffffff,
};
Event (ffff880013e22520) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
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};
Event (ffff880013e21bd8) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
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};
Event (ffff880013e240f8) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
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.mmap = 1,
.freq = 1,
.enable_on_exec = 1,
.task = 1,
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.mmap_data = 1,
.sample_id_all = 1,
.exclude_guest = 1,
.exclude_callchain_kernel = 1,
.exclude_callchain_user = 1,
};
Event (ffff88002881b7b0) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
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.freq = 1,
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.task = 1,
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};
Event (ffff88001768b7b0) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
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.exclude_hv = 1,
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.comm = 1,
.freq = 1,
.inherit_stat = 1,
.enable_on_exec = 1,
.task = 1,
.exclude_host = 1,
.exclude_callchain_kernel = 1,
.exclude_callchain_user = 1,
};
Event (ffff880005c05cd0) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
.type = 1,
.config = 0x8,
.sample_period = -1,
.sample_type = 0xc0ac,
.read_format = 0x5,
.disabled = 1,
.inherit = 1,
.pinned = 1,
.exclude_user = 1,
.exclude_idle = 1,
.precise_ip = 2,
.exclude_callchain_kernel = 1,
.wakeup_events = 255,
.config1 = 0xba5010,
};
Event (ffff880005c06f60) created by task: 7445/trinity-main
cpu: -1
cgrp: (null)
task: 7445/trinity-main
group:
attr: {
.type = 1,
.config = 0x1,
.read_format = 0xe,
.exclusive = 1,
.enable_on_exec = 1,
.task = 1,
.mmap_data = 1,
.exclude_callchain_user = 1,
};
Event (ffff880244efa520) created by task: (null)
cpu: 3
cgrp: (null)
task: (null)
group:
attr: {
.sample_period = 22945590000,
.disabled = 1,
.pinned = 1,
};
Event (ffff880244efd388) created by task: (null)
cpu: 2
cgrp: (null)
task: (null)
group:
attr: {
.sample_period = 22945590000,
.disabled = 1,
.pinned = 1,
};
Event (ffff880244ef9bd8) created by task: (null)
cpu: 1
cgrp: (null)
task: (null)
group:
attr: {
.sample_period = 22945590000,
.disabled = 1,
.pinned = 1,
};
Event (ffff880244efdcd0) created by task: (null)
cpu: 0
cgrp: (null)
task: (null)
group:
attr: {
.sample_period = 22945590000,
.disabled = 1,
.pinned = 1,
};
--
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