From: Li Zefan <lizf@cn.fujitsu.com> To: Masami Hiramatsu <mhiramat@redhat.com> Cc: Ingo Molnar <mingo@elte.hu>, Steven Rostedt <rostedt@goodmis.org>, lkml <linux-kernel@vger.kernel.org>, systemtap <systemtap@sources.redhat.com>, kvm <kvm@vger.kernel.org>, DLE <dle-develop@lists.sourceforge.net>, Ananth N Mavinakayanahalli <ananth@in.ibm.com>, Christoph Hellwig <hch@infradead.org>, Frederic Weisbecker <fweisbec@gmail.com>, Tom Zanussi <tzanussi@gmail.com> Subject: Re: [PATCH -tip -v11 11/11] tracing: Add kprobes event profiling interface Date: Fri, 10 Jul 2009 14:46:48 +0800 [thread overview] Message-ID: <4A56E3D8.3010806@cn.fujitsu.com> (raw) In-Reply-To: <20090709202327.13223.16418.stgit@localhost.localdomain> > +Event Profiling > +--------------- > + You can check the total number of probe hits and probe miss-hits via > +/sys/kernel/debug/tracing/kprobe_profile. > + The fist column is event name, the second is the number of probe hits, s/fist/first > +the third is the number of probe miss-hits. > + > + ... > +/* Probes profiling interfaces */ > +static int profile_seq_show(struct seq_file *m, void *v) > +{ > + struct trace_probe *tp = v; > + > + if (tp == NULL) > + return 0; > + tp will never be NULL, which is guaranteed by seq_file > + seq_printf(m, "%s", tp->call.name); > + > + seq_printf(m, "\t%8lu %8lu\n", tp->nhits, > + probe_is_return(tp) ? tp->rp.kp.nmissed : tp->kp.nmissed); > + > + return 0; > +}
WARNING: multiple messages have this Message-ID (diff)
From: Li Zefan <lizf@cn.fujitsu.com> To: Masami Hiramatsu <mhiramat@redhat.com> Cc: Ingo Molnar <mingo@elte.hu>, Steven Rostedt <rostedt@goodmis.org>, lkml <linux-kernel@vger.kernel.org>, systemtap <systemtap@sources.redhat.com>, kvm <kvm@vger.kernel.org>, DLE <dle-develop@lists.sourceforge.net>, Ananth N Mavinakayanahalli <ananth@in.ibm.com>, Christoph Hellwig <hch@infradead.org>, Frederic Weisbecker <fweisbec@gmail.com>, Tom Zanussi <tzanussi@gmail.com> Subject: Re: [PATCH -tip -v11 11/11] tracing: Add kprobes event profiling interface Date: Fri, 10 Jul 2009 14:46:48 +0800 [thread overview] Message-ID: <4A56E3D8.3010806@cn.fujitsu.com> (raw) In-Reply-To: <20090709202327.13223.16418.stgit@localhost.localdomain> > +Event Profiling > +--------------- > + You can check the total number of probe hits and probe miss-hits via > +/sys/kernel/debug/tracing/kprobe_profile. > + The fist column is event name, the second is the number of probe hits, s/fist/first > +the third is the number of probe miss-hits. > + > + ... > +/* Probes profiling interfaces */ > +static int profile_seq_show(struct seq_file *m, void *v) > +{ > + struct trace_probe *tp = v; > + > + if (tp == NULL) > + return 0; > + tp will never be NULL, which is guaranteed by seq_file > + seq_printf(m, "%s", tp->call.name); > + > + seq_printf(m, "\t%8lu %8lu\n", tp->nhits, > + probe_is_return(tp) ? tp->rp.kp.nmissed : tp->kp.nmissed); > + > + return 0; > +}
next prev parent reply other threads:[~2009-07-10 6:47 UTC|newest] Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-07-09 20:22 [PATCH -tip -v11 00/11] tracing: kprobe-based event tracer and x86 instruction decoder Masami Hiramatsu 2009-07-09 20:22 ` Masami Hiramatsu 2009-07-09 20:22 ` [PATCH -tip -v11 01/11] x86: instruction decoder API Masami Hiramatsu 2009-07-09 20:22 ` Masami Hiramatsu 2009-07-09 20:22 ` [PATCH -tip -v11 02/11] x86: x86 instruction decoder build-time selftest Masami Hiramatsu 2009-07-09 20:22 ` Masami Hiramatsu 2009-07-09 20:22 ` [PATCH -tip -v11 03/11] kprobes: checks probe address is instruction boudary on x86 Masami Hiramatsu 2009-07-09 20:22 ` [PATCH -tip -v11 04/11] kprobes: cleanup fix_riprel() using insn decoder " Masami Hiramatsu 2009-07-09 20:22 ` Masami Hiramatsu 2009-07-09 20:22 ` [PATCH -tip -v11 05/11] x86: add pt_regs register and stack access APIs Masami Hiramatsu 2009-07-09 20:22 ` Masami Hiramatsu 2009-07-09 20:22 ` Masami Hiramatsu 2009-07-09 20:22 ` Masami Hiramatsu 2009-07-09 20:22 ` [PATCH -tip -v11 06/11] tracing: ftrace dynamic ftrace_event_call support Masami Hiramatsu 2009-07-09 20:23 ` [PATCH -tip -v11 07/11] tracing: Introduce TRACE_FIELD_ZERO() macro Masami Hiramatsu 2009-07-09 20:23 ` [PATCH -tip -v11 08/11] tracing: add kprobe-based event tracer Masami Hiramatsu 2009-07-09 20:23 ` Masami Hiramatsu 2009-07-10 7:13 ` Li Zefan 2009-07-10 20:33 ` Masami Hiramatsu 2009-07-10 20:33 ` Masami Hiramatsu 2009-07-09 20:23 ` [PATCH -tip -v11 09/11] tracing: Kprobe-tracer supports more than 6 arguments Masami Hiramatsu 2009-07-09 20:23 ` Masami Hiramatsu 2009-07-09 20:23 ` [PATCH -tip -v11 10/11] tracing: Generate names for each kprobe event automatically Masami Hiramatsu 2009-07-09 20:23 ` Masami Hiramatsu 2009-07-09 20:23 ` [PATCH -tip -v11 11/11] tracing: Add kprobes event profiling interface Masami Hiramatsu 2009-07-09 20:23 ` Masami Hiramatsu 2009-07-10 5:17 ` Ananth N Mavinakayanahalli 2009-07-10 6:46 ` Li Zefan [this message] 2009-07-10 6:46 ` Li Zefan 2009-07-10 19:59 ` Masami Hiramatsu 2009-07-10 19:59 ` Masami Hiramatsu
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