diff options
| -rw-r--r-- | Documentation/trace/hist-triggers-test.txt | 743 |
1 files changed, 743 insertions, 0 deletions
diff --git a/Documentation/trace/hist-triggers-test.txt b/Documentation/trace/hist-triggers-test.txt new file mode 100644 index 000000000000..2afe2955ceaa --- /dev/null +++ b/Documentation/trace/hist-triggers-test.txt @@ -0,0 +1,743 @@ +#### + +Documentation + +echo 'hist:key=call_site:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo '!hist:key=call_site:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +echo '!hist:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:key=call_site.sym:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +echo '!hist:key=call_site.sym:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:key=call_site.sym:val=bytes_req:sort=bytes_req.descending' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +echo '!hist:key=call_site.sym:val=bytes_req:sort=bytes_req.descending' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:keys=call_site.sym:values=bytes_req,bytes_alloc:sort=bytes_alloc.descending' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +echo '!hist:keys=call_site.sym:values=bytes_req,bytes_alloc:sort=bytes_alloc.descending' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:keys=call_site.sym-offset:values=bytes_req,bytes_alloc:sort=bytes_alloc.descending' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +echo '!hist:keys=call_site.sym-offset:values=bytes_req,bytes_alloc:sort=bytes_alloc.descending' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:keys=stacktrace:values=bytes_req,bytes_alloc:sort=bytes_alloc' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +echo '!hist:keys=stacktrace:values=bytes_req,bytes_alloc:sort=bytes_alloc' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:keys=stacktrace:values=bytes_req,bytes_alloc:sort=bytes_alloc.descending' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +echo '!hist:keys=stacktrace:values=bytes_req,bytes_alloc:sort=bytes_alloc.descending' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:keys=stacktrace:values=hitcount' > /sys/kernel/debug/tracing/events/kmem/kfree/trigger +cat /sys/kernel/debug/tracing/events/kmem/kfree/hist +echo '!hist:keys=stacktrace:values=hitcount' > /sys/kernel/debug/tracing/events/kmem/kfree/trigger + +echo 'hist:key=common_pid.execname:val=count:sort=count' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_read/trigger +cat /sys/kernel/debug/tracing/events/syscalls/sys_enter_read/hist +echo '!hist:key=common_pid.execname:val=count:sort=count' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_read/trigger + +echo 'hist:key=id.syscall:val=hitcount' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger +cat /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/hist +echo '!hist:key=id.syscall:val=hitcount' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger + +# for slob, need to use kmalloc_node, no trace_kmalloc, but trace_kmalloc_node +echo 'hist:keys=stacktrace:values=bytes_req,bytes_alloc:sort=bytes_alloc' > /sys/kernel/debug/tracing/events/kmem/kmalloc_node/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc_node/hist +echo '!hist:keys=stacktrace:values=bytes_req,bytes_alloc:sort=bytes_alloc' > /sys/kernel/debug/tracing/events/kmem/kmalloc_node/trigger + +echo 'hist:key=child_comm:val=hitcount:size=256' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_fork/hist +echo 'hist:key=child_comm:val=hitcount:pause' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_fork/hist +echo 'hist:key=child_comm:val=hitcount:cont' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger +echo '!hist:key=child_comm:val=hitcount:size=256' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger + +echo 'hist:keys=skbaddr.hex:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:key=stacktrace:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'enable_hist:net:netif_receive_skb if filename==/usr/bin/wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +echo 'disable_hist:net:netif_receive_skb if comm==wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exit/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exit/trigger + +wget https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.19.xz +wget https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.19.tar.xz + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +echo 'enable_event:net:netif_receive_skb if filename==/usr/bin/wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +echo 'disable_event:net:netif_receive_skb if comm==wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exit/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exit/trigger + +echo 'hist:keys=skbaddr.hex:vals=len:clear' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist +echo 'hist:key=stacktrace:vals=len:clear' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist +echo > /sys/kernel/debug/tracing/trace + +wget https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.19.xz +wget https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.19.tar.xz + +cat /sys/kernel/debug/tracing/trace + +echo '!hist:keys=skbaddr.hex:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:key=stacktrace:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!enable_hist:net:netif_receive_skb if filename==/usr/bin/wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +echo '!disable_hist:net:netif_receive_skb if comm==wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exit/trigger +echo '!enable_event:net:netif_receive_skb if filename==/usr/bin/wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +echo '!disable_event:net:netif_receive_skb if comm==wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exit/trigger + +# multiple triggers for same event, different filter and fields +echo 'hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=len:vals=common_preempt_count' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +echo '!hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=len:vals=common_preempt_count' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +#named triggers +echo 'hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist; cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# named triggers without any fields, you can combine anything +echo 'hist:name=bar:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger +echo 'hist:name=bar:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_fork/hist +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:name=bar:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger +echo '!hist:name=bar:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +#### + +#named triggers + +echo 'hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist;cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +## + +# filters can be different for same named filter +echo 'hist:name=foo:key=call_site:val=bytes_req if bytes_req > 0' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:name=foo:key=call_site:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc_node/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc_node/hist +cat /sys/kernel/debug/tracing/events/kmem/kmalloc_node/trigger + +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist;cat /sys/kernel/debug/tracing/events/kmem/kmalloc_node/hist + +echo '!hist:name=foo:key=call_site:val=bytes_req if bytes_req > 0' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo '!hist:name=foo:key=call_site:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc_node/trigger + +## + +# without any fields you can combine anything +echo 'hist:name=foo:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger +echo 'hist:name=foo:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_fork/hist +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:name=foo:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger +echo '!hist:name=foo:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +## + +# but with fields you should get error +echo 'hist:name=foo:key=skbaddr:val=hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger +echo '!hist:name=foo:key=skbaddr:val=hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo 'hist:name=foo:key=stacktrace:val=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:key=stacktrace:val=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger +echo '!hist:name=foo:key=stacktrace:val=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +## + +# named and unnamed different namespace, same trigger but one named the other not + +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist + +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:cont' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:cont' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo 'hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo 'hist:keys=skbaddr.hex:vals=len:pause if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:pause if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:cont if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:cont if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# make sure you still get existing error for same event whether or not named +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +## + +# named and unnamed different namespace, same triggers but 2 named the other not + +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist + +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:cont' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len:cont' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:cont' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo 'hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo 'hist:keys=skbaddr.hex:vals=len:pause if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:pause if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len:pause if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:cont if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:cont if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len:cont if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# make sure you still get existing error for same event whether or not named +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:name=bar:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +## + +# make sure you still get existing error for same event whether or not named +echo 'hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# EEXIST +echo 'hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo '!hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=bar:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +## + +echo 'hist:keys=skbaddr.hex:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo 'hist:keys=skbaddr.hex:vals=len:cont' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:pause if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:cont if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +#### + +# multiple triggers for same event, different filter and fields + +echo 'hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=len:vals=common_preempt_count' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +echo '!hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=len:vals=common_preempt_count' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +#### + +# multiple named triggers for same event, filter first then non-filter + +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +# multiple named triggers for same event, non-filter first then filter + +echo 'hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +# multiple non-named triggers for same event, filter first then non-filter + +echo 'hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +echo '!hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +# multiple non-named triggers for same event, non-filter first then filter + +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +echo '!hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +## + +# multiple named triggers for same event, different filter + +echo 'hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +echo '!hist:name=foo:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +## + +# multiple triggers for same event, different filter, pause, cont, clear + +echo 'hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +# pause +echo 'hist:keys=skbaddr.hex:vals=len:pause if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +#clear, pauses all but should leave previous paused +echo 'hist:keys=skbaddr.hex:vals=len:clear if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +# cont +echo 'hist:keys=skbaddr.hex:vals=len:cont if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +echo '!hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +## + +# multiple named triggers for same event, different filter, pause, cont, clear + +# named triggers should be the same as non-named for pause and cont i.e. each must be specified explicitly for pause and cont +# for clear, clearing one named trigger clears all of the same name, since they reference the same hist + +# multiple named triggers for same event, different filter, pause, cont, clear + +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:name=foo:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +# pause +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:pause if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +#clear, pauses all but should leave previous paused +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:clear if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +# cont +echo 'hist:name=foo:keys=skbaddr.hex:vals=len:cont if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:name=foo:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +## + +echo 'hist:key=common_pid.execname if ret > 0' > /sys/kernel/debug/tracing/events/syscalls/sys_exit_write/trigger +echo 'hist:key=common_pid.execname if ret == 0' > /sys/kernel/debug/tracing/events/syscalls/sys_exit_write/trigger +echo 'hist:key=common_pid.execname if ret < 0' > /sys/kernel/debug/tracing/events/syscalls/sys_exit_write/trigger + +cat /sys/kernel/debug/tracing/events/syscalls/sys_exit_write/trigger +cat /sys/kernel/debug/tracing/events/syscalls/sys_exit_write/hist + +echo '!hist:key=common_pid.execname if ret > 0' > /sys/kernel/debug/tracing/events/syscalls/sys_exit_write/trigger +echo '!hist:key=common_pid.execname if ret == 0' > /sys/kernel/debug/tracing/events/syscalls/sys_exit_write/trigger +echo '!hist:key=common_pid.execname if ret < 0' > /sys/kernel/debug/tracing/events/syscalls/sys_exit_write/trigger + +#### + +# enable_hist on multiple triggers for same event, different filter + +echo 'hist:keys=skbaddr.hex:vals=len:pause if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len:pause if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len:pause if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo 'hist:keys=skbaddr.hex:vals=len:pause' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +echo 'enable_hist:net:netif_receive_skb if filename==/usr/bin/wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +echo 'disable_hist:net:netif_receive_skb if comm==wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exit/trigger + +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exit/trigger + +wget https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.19.xz +wget https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.19.tar.xz + +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist + +echo '!enable_hist:net:netif_receive_skb if filename==/usr/bin/wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +echo '!disable_hist:net:netif_receive_skb if comm==wget' > /sys/kernel/debug/tracing/events/sched/sched_process_exit/trigger + +echo '!hist:keys=skbaddr.hex:vals=len if len < 0' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len > 4096' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len if len == 256' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +#### + +mkdir /sys/kernel/debug/tracing/instances/foo + +echo 'hist:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/trigger +echo 'hist:key=call_site.hex:val=bytes_req if bytes_req > 256' > /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/trigger +echo 'hist:name=foo:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/trigger +echo 'hist:name=foo:key=call_site.hex:val=bytes_req if bytes_req > 256' > /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/hist +cat /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/trigger + +echo 'hist:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo 'hist:key=call_site.hex:val=bytes_req if bytes_req > 512' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo 'hist:name=foo:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo 'hist:name=foo:key=call_site.hex:val=bytes_req if bytes_req > 512' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +cat /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/hist;cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist + +echo '!hist:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/trigger +echo '!hist:key=call_site.hex:val=bytes_req if bytes_req > 256' > /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/trigger +echo '!hist:name=foo:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/trigger +echo '!hist:name=foo:key=call_site.hex:val=bytes_req if bytes_req > 256' > /sys/kernel/debug/tracing/instances/foo/events/kmem/kmalloc/trigger +echo '!hist:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo '!hist:key=call_site.hex:val=bytes_req if bytes_req > 512' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo '!hist:name=foo:key=call_site.hex:val=bytes_req' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo '!hist:name=foo:key=call_site.hex:val=bytes_req if bytes_req > 512' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +#### + +# default e.g. no sort key = hitcount +echo 'hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# single sort key +echo 'hist:keys=skbaddr.hex:vals=len:sort=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:keys=skbaddr.hex:vals=len:sort=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# single sort key descending +echo 'hist:keys=skbaddr.hex:vals=len:sort=len.descending' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:keys=skbaddr.hex:vals=len:sort=len.descending' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# same sort key +echo 'hist:keys=skbaddr.hex:vals=len:sort=len,len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:keys=skbaddr.hex:vals=len:sort=len,len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# too many and same sort key +echo 'hist:keys=skbaddr.hex:vals=len:sort=len,len,len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# too many and different sort key +echo 'hist:keys=skbaddr.hex:vals=len:sort=len,hitcount,len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# compound key, multiple sort keys, high volume +echo 'hist:key=common_pid.execname,id.syscall:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger +cat /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/hist +echo '!hist:key=common_pid.execname,id.syscall:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger + +# compound key, multiple sort keys, high volume, find highest of each syscall +echo 'hist:key=id.syscall,common_pid.execname:val=hitcount:sort=id,hitcount' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger +cat /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/hist +echo '!hist:key=id.syscall,common_pid.execname:val=hitcount:sort=id,hitcount' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger + +# compound key, multiple sort keys, high volume, find highest of each syscall, descending sort +echo 'hist:key=id,common_pid:val=hitcount:sort=id.descending,hitcount.descending' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger +cat /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/hist +echo '!hist:key=id,common_pid:val=hitcount:sort=id.descending,hitcount.descending' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger + +# compound key, multiple sort keys, high volume, find highest of one kind of syscall +echo 'hist:key=id.syscall,common_pid.execname:val=hitcount:sort=id,hitcount if id == 16' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger +cat /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/hist +echo '!hist:key=id.syscall,common_pid.execname:val=hitcount:sort=id,hitcount if id == 16' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger + +# compound key, multiple sort keys, low volume +echo 'hist:key=common_pid.execname,size:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/trigger +cat /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/hist +echo '!hist:key=common_pid.execname,size:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/trigger + +# compound key, multiple sort keys, low volume, reverse keys +echo 'hist:key=size,common_pid.execname:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/trigger +cat /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/hist +echo '!hist:key=size,common_pid.execname:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/trigger + +# compound key, multiple sort keys - both sort keys are keys +echo 'hist:key=common_pid.execname,size:val=hitcount:sort=common_pid,size' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/trigger +cat /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/hist +echo '!hist:key=common_pid.execname,size:val=hitcount:sort=common_pid,size' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/trigger + +# compound key, multiple sort keys - both sort keys are NOT keys +echo 'hist:key=common_pid.execname,len:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:key=common_pid.execname,len:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# compound key, multiple sort keys - both sort keys are keys +echo 'hist:key=common_pid.execname,len:val=hitcount:sort=common_pid,len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:key=common_pid.execname,len:val=hitcount:sort=common_pid,len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# compound key, multiple sort keys - both sort keys are keys, reverse keys +echo 'hist:key=size,common_pid.execname:val=hitcount:sort=common_pid,size' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/trigger +cat /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/hist +echo '!hist:key=size,common_pid.execname:val=hitcount:sort=common_pid,size' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_recvfrom/trigger + +# compound key, multiple sort keys +echo 'hist:key=common_pid.execname,len:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_mmap/trigger +cat /sys/kernel/debug/tracing/events/syscalls/sys_enter_mmap/hist +echo '!hist:key=common_pid.execname,len:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_mmap/trigger + +# compound key, multiple sort keys, -EINVAL because only common_pid can have execname +echo 'hist:key=common_pid.execname,parent_pid.execname:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_fork/trigger + +# compound key, multiple sort keys, reversed key order, for testing offset +echo 'hist:key=id.syscall,common_pid.execname:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger +cat /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/hist +echo '!hist:key=id.syscall,common_pid.execname:val=hitcount:sort=common_pid,hitcount' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger + +# compound key, stacktrace in key +echo 'hist:key=stacktrace,len:val=hitcount:sort=len,hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:key=stacktrace,len:val=hitcount:sort=len,hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# compound key, stacktrace second in key +echo 'hist:key=len,stacktrace:val=hitcount:sort=len,hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +echo '!hist:key=len,stacktrace:val=hitcount:sort=len,hitcount' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +#### + +# should produce EINVAL errors + +echo 'hist:keys=skbaddr.hex:vals=len:sort' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=,' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=len,' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=len.' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=len.ascendin' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=len.descendin' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:key=id,common_pid:val=hitcount:sort=id.descendin,hitcount.descending' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger +echo 'hist:key=id,common_pid:val=hitcount:sort=id.descending,hitcount.descendin' > /sys/kernel/debug/tracing/events/raw_syscalls/sys_enter/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=len,len,len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# too many keys +echo 'hist:keys=filename,common_pid,stacktrace:vals=hitcount:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# too many vals +echo 'hist:keys=filename:vals=common_pid,pid,old_pid:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# too many vals, hitcount first +echo 'hist:keys=filename:vals=hitcount,common_pid,pid,old_pid:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# too many vals, hitcount first, take out hitcount and works because hitcount automatic, shows max applies to specified +echo 'hist:keys=filename:vals=hitcount,pid,old_pid:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# key size too big (> string + stacktrace) +echo 'hist:keys=filename,filename:vals=hitcount:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# should NOT produce EINVAL errors + +echo 'hist:keys=skbaddr.hex:vals=len:sort=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=len.ascending' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=len.descending' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=skbaddr.hex:vals=len:sort=len,len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo 'hist:keys=filename:vals=hitcount,common_pid:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +echo 'hist:keys=filename:vals=pid,old_pid:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/hist + +# hex on value +echo 'hist:keys=skbaddr.hex:vals=len.hex:sort=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist + +# sym on value (EINVAL) +echo 'hist:keys=skbaddr.hex:vals=len.sym:sort=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +#### + +#test illegal sort on stacktrace +echo 'hist:keys=stacktrace:vals=len:sort=stacktrace' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# test sort on key +echo 'hist:key=common_pid:val=count:sort=common_pid' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_read/trigger +cat /sys/kernel/debug/tracing/events/syscalls/sys_enter_read/hist +echo '!hist:key=common_pid:val=count:sort=common_pid' > /sys/kernel/debug/tracing/events/syscalls/sys_enter_read/trigger + +# variable length string +echo 'hist:keys=filename:vals=hitcount:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/hist +echo '!hist:keys=filename:vals=hitcount:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# variable length string as first field in key +echo 'hist:keys=filename,common_pid:vals=hitcount:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/hist +echo '!hist:keys=filename,common_pid:vals=hitcount:sort=hitcount' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# variable length string as first field in key, sort on string and secondary descending +echo 'hist:keys=filename,common_pid:vals=hitcount:sort=filename,common_pid.descending' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/hist +echo '!hist:keys=filename,common_pid:vals=hitcount:sort=filename,common_pid.descending' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# variable length string as first field in key, sort on string +echo 'hist:keys=filename,common_pid:vals=hitcount:sort=filename' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/hist +echo '!hist:keys=filename,common_pid:vals=hitcount:sort=filename' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# variable length string as last field in key, first field char, sort on string and secondary +echo 'hist:keys=common_preempt_count,filename:vals=hitcount:sort=common_preempt_count,filename' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/hist +echo '!hist:keys=common_preempt_count,filename:vals=hitcount:sort=common_preempt_count,filename' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +# sort on string +echo 'hist:keys=filename:vals=hitcount:sort=filename' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger +cat /sys/kernel/debug/tracing/events/sched/sched_process_exec/hist +echo '!hist:keys=filename:vals=hitcount:sort=filename' > /sys/kernel/debug/tracing/events/sched/sched_process_exec/trigger + +#### + +# More strings + +echo 'hist:keys=name:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger +cat /sys/kernel/debug/tracing/events/net/netif_receive_skb/hist +echo '!hist:keys=name:vals=len' > /sys/kernel/debug/tracing/events/net/netif_receive_skb/trigger + +echo 'hist:keys=oldcomm:vals=hitcount:sort=oldcomm' > /sys/kernel/debug/tracing/events/task/task_rename/trigger +cat /sys/kernel/debug/tracing/events/task/task_rename/hist +echo '!hist:keys=oldcomm:vals=hitcount:sort=oldcomm' > /sys/kernel/debug/tracing/events/task/task_rename/trigger + +#### + +# max tests + +# EINVAL because size too small +echo 'hist:keys=skbaddr.hex:vals=len:size=8' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +# smallest size +echo 'hist:keys=skbaddr.hex:vals=len:size=128' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger +cat /sys/kernel/debug/tracing/events/net/netif_rx/hist +cat /sys/kernel/debug/tracing/events/net/netif_rx/trigger +echo '!hist:keys=skbaddr.hex:vals=len' > /sys/kernel/debug/tracing/events/net/netif_rx/trigger + +echo 'hist:key=pfn:val=hitcount' > /sys/kernel/debug/tracing/events/kmem/mm_page_alloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/mm_page_alloc/hist +echo '!hist:key=pfn:val=hitcount' > /sys/kernel/debug/tracing/events/kmem/mm_page_alloc/trigger + +echo 'hist:key=ptr.hex:val=hitcount' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +echo '!hist:key=ptr.hex:val=hitcount' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +echo 'hist:keys=stacktrace:vals=bytes_req,bytes_alloc:sort=bytes_alloc:size=2048' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo 'hist:key=ptr:val=hitcount' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +cat /sys/kernel/debug/tracing/events/kmem/kmalloc/hist +echo '!hist:keys=stacktrace:vals=bytes_req,bytes_alloc:sort=bytes_alloc:size=2048' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger +echo '!hist:key=ptr:val=hitcount' > /sys/kernel/debug/tracing/events/kmem/kmalloc/trigger + +#### + +# function hist + +echo function_hist > /sys/kernel/debug/tracing/current_tracer +cat /sys/kernel/debug/tracing/function_hist + |