linux-kernel - Re: [PATCH net-next v4 0/6] net: tcp: sctp: dccp: Replace jprobe usage with trace events

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Message-Id: <20171221113657.f25b2f61eb472579ab32132d@kernel.org>
Date:   Thu, 21 Dec 2017 11:36:57 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     David Miller <davem@...emloft.net>
Cc:     mingo@...nel.org, ian.mcdonald@...di.co.nz, vyasevich@...il.com,
        stephen@...workplumber.org, rostedt@...dmis.org,
        peterz@...radead.org, tglx@...utronix.de,
        linux-kernel@...r.kernel.org, hpa@...or.com, gerrit@....abdn.ac.uk,
        nhorman@...driver.com, dccp@...r.kernel.org,
        netdev@...r.kernel.org, linux-sctp@...r.kernel.org,
        sfr@...b.auug.org.au
Subject: Re: [PATCH net-next v4 0/6] net: tcp: sctp: dccp: Replace jprobe
 usage with trace events

On Wed, 20 Dec 2017 14:24:24 -0500 (EST)
David Miller <davem@...emloft.net> wrote:

> From: David Miller <davem@...emloft.net>
> Date: Wed, 20 Dec 2017 14:20:40 -0500 (EST)
> 
> > From: Masami Hiramatsu <mhiramat@...nel.org>
> > Date: Wed, 20 Dec 2017 13:14:11 +0900
> > 
> >> This series is v4 of the replacement of jprobe usage with trace
> >> events. This version is rebased on net-next, fixes a build warning
> >> and moves a temporal variable definition in a block.
> >> 
> >> Previous version is here;
> >> https://lkml.org/lkml/2017/12/19/153
> >> 
> >> Changes from v3:
> >>   All: Rebased on net-next
> >>   [3/6]: fixes a build warning for i386 by casting pointer unsigned
> >>         long instead of __u64, and moves a temporal variable
> >>          definition in a block.
> > 
> > Looks good, series applied to net-next, thanks.
> 
> Actually, this doesn't even compile, so I've reverted:
> 
> [davem@...p-10-15-49-227 net-next]$ make -s -j16
> In file included from net/dccp/trace.h:105:0,
>                  from net/dccp/proto.c:42:
> ./include/trace/define_trace.h:89:42: fatal error: ./trace.h: No such file or directory
>  #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
>                                           ^
> compilation terminated.

Hi David,

Could you share your .config file? I would like to reproduce it.
When I tried with attached kconfig, I could not reproduce this issue,
and could run it.

====
/sys/kernel/debug/tracing/events # cd dccp/
/sys/kernel/debug/tracing/events/dccp # ls
dccp_probe  enable      filter
/sys/kernel/debug/tracing/events/dccp # cd dccp_probe/
/sys/kernel/debug/tracing/events/dccp/dccp_probe # ls
enable   filter   format   hist     id       trigger
/sys/kernel/debug/tracing/events/dccp/dccp_probe # cat format 
name: dccp_probe
ID: 1002
format:
	field:unsigned short common_type;	offset:0;	size:2;	signed:0;
	field:unsigned char common_flags;	offset:2;	size:1;	signed:0;
	field:unsigned char common_preempt_count;	offset:3;	size:1;	signed:0;
	field:int common_pid;	offset:4;	size:4;	signed:1;

	field:__u8 saddr[sizeof(struct sockaddr_in6)];	offset:8;	size:28;	signed:0;
	field:__u8 daddr[sizeof(struct sockaddr_in6)];	offset:36;	size:28;	signed:0;
	field:__u16 sport;	offset:64;	size:2;	signed:0;
	field:__u16 dport;	offset:66;	size:2;	signed:0;
	field:__u16 size;	offset:68;	size:2;	signed:0;
	field:__u16 tx_s;	offset:70;	size:2;	signed:0;
	field:__u32 tx_rtt;	offset:72;	size:4;	signed:0;
	field:__u32 tx_p;	offset:76;	size:4;	signed:0;
	field:__u32 tx_x_calc;	offset:80;	size:4;	signed:0;
	field:__u64 tx_x_recv;	offset:88;	size:8;	signed:0;
	field:__u64 tx_x;	offset:96;	size:8;	signed:0;
	field:__u32 tx_t_ipi;	offset:104;	size:4;	signed:0;

print fmt: "src=%pISpc dest=%pISpc size=%d tx_s=%d tx_rtt=%d tx_p=%d tx_x_calc=%u tx_x_recv=%llu tx_x=%llu tx_t_ipi=%d", REC->saddr, REC->daddr, REC->size, REC->tx_s, REC->tx_rtt, REC->tx_p, REC->tx_x_calc, REC->tx_x_recv, REC->tx_x, REC->tx_t_ipi
====

Thank you,

-- 
Masami Hiramatsu <mhiramat@...nel.org>

Download attachment "kconfig" of type "application/octet-stream" (81817 bytes)