Re: [PATCH] tracing: Cleanup the convoluted softirq tracepoints | KernelTrap

Re: [PATCH] tracing: Cleanup the convoluted softirq tracepoints

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From: H. Peter Anvin

Subject: Re: [PATCH] tracing: Cleanup the convoluted softirq tracepoints

Date: Tuesday, October 19, 2010 - 3:44 pm

On 10/19/2010 03:38 PM, Jason Baron wrote:
quoted text> 
> I'm not sure I did, the documentation says that we have nop followed by
> a jmp:
> 
> +The new code is a 'nopl' followed by a 'jmp'. Thus:
> +
> +nopl - 0f 1f 44 00 00 - 5 bytes
> +jmp  - eb 3e          - 2 bytes
> 

There is no excuse for needing the second jump here, obviously...

	-hpa
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Messages in current thread:

[PATCH v4 0/5] netdev: show a process of packets, Koki Sanagi, (Mon Aug 23, 2:41 am)

[PATCH v4 1/5] irq: add tracepoint to softirq_raise, Koki Sanagi, (Mon Aug 23, 2:42 am)

[PATCH v4 2/5] napi: convert trace_napi_poll to TRACE_EVENT, Koki Sanagi, (Mon Aug 23, 2:43 am)

[PATCH v4 4/5] skb: add tracepoints to freeing skb, Koki Sanagi, (Mon Aug 23, 2:46 am)

[PATCH v4 5/5] perf:add a script shows a process of packet, Koki Sanagi, (Mon Aug 23, 2:47 am)

Re: [PATCH v4 2/5] napi: convert trace_napi_poll to TRACE_ ..., David Miller, (Mon Aug 23, 8:52 pm)

Re: [PATCH v4 3/5] netdev: add tracepoints to netdev layer, David Miller, (Mon Aug 23, 8:53 pm)

Re: [PATCH v4 4/5] skb: add tracepoints to freeing skb, David Miller, (Mon Aug 23, 8:53 pm)

Re: [PATCH v4 5/5] perf:add a script shows a process of packet, David Miller, (Mon Aug 23, 8:53 pm)

Re: [PATCH v4 0/5] netdev: show a process of packets, Steven Rostedt, (Mon Aug 30, 4:50 pm)

Re: [PATCH v4 0/5] netdev: show a process of packets, Koki Sanagi, (Thu Sep 2, 7:10 pm)

Re: [PATCH v4 0/5] netdev: show a process of packets, David Miller, (Thu Sep 2, 7:17 pm)

Re: [PATCH v4 0/5] netdev: show a process of packets, Koki Sanagi, (Thu Sep 2, 7:55 pm)

Re: [PATCH v4 0/5] netdev: show a process of packets, Frederic Weisbecker, (Thu Sep 2, 9:46 pm)

Re: [PATCH v4 0/5] netdev: show a process of packets, Koki Sanagi, (Thu Sep 2, 10:12 pm)

Re: [PATCH v4 1/5] irq: add tracepoint to softirq_raise, Frederic Weisbecker, (Fri Sep 3, 8:29 am)

Re: [PATCH v4 1/5] irq: add tracepoint to softirq_raise, Steven Rostedt, (Fri Sep 3, 8:39 am)

Re: [PATCH v4 1/5] irq: add tracepoint to softirq_raise, Frederic Weisbecker, (Fri Sep 3, 8:42 am)

Re: [PATCH v4 1/5] irq: add tracepoint to softirq_raise, Steven Rostedt, (Fri Sep 3, 8:43 am)

Re: [PATCH v4 1/5] irq: add tracepoint to softirq_raise, Frederic Weisbecker, (Fri Sep 3, 8:50 am)

Re: [PATCH v4 1/5] irq: add tracepoint to softirq_raise, Koki Sanagi, (Sun Sep 5, 6:46 pm)

Re: [PATCH v4 5/5] perf:add a script shows a process of packet, Frederic Weisbecker, (Tue Sep 7, 9:57 am)

[tip:perf/core] irq: Add tracepoint to softirq_raise, tip-bot for Lai Jian ..., (Wed Sep 8, 1:33 am)

[tip:perf/core] napi: Convert trace_napi_poll to TRACE_EVENT, tip-bot for Neil Horman, (Wed Sep 8, 1:34 am)

[tip:perf/core] skb: Add tracepoints to freeing skb, tip-bot for Koki Sanagi, (Wed Sep 8, 1:35 am)

[tip:perf/core] perf: Add a script to show packets processing, tip-bot for Koki Sanagi, (Wed Sep 8, 1:35 am)

[sparc build bug] Re: [tip:perf/core] irq: Add tracepoint ..., Ingo Molnar, (Wed Sep 8, 4:25 am)

[PATCH] irq: Fix circular headers dependency, Frederic Weisbecker, (Wed Sep 8, 5:26 am)

[tip:perf/core] irq: Fix circular headers dependency, tip-bot for Frederic ..., (Thu Sep 9, 12:54 pm)

Re: [sparc build bug] Re: [tip:perf/core] irq: Add tracepo ..., Peter Zijlstra, (Mon Oct 18, 2:44 am)

Re: [sparc build bug] Re: [tip:perf/core] irq: Add tracepo ..., Peter Zijlstra, (Mon Oct 18, 3:11 am)

Re: [sparc build bug] Re: [tip:perf/core] irq: Add tracepo ..., Heiko Carstens, (Mon Oct 18, 3:26 am)

Re: [sparc build bug] Re: [tip:perf/core] irq: Add tracepo ..., Peter Zijlstra, (Mon Oct 18, 3:48 am)

Re: [sparc build bug] Re: [tip:perf/core] irq: Add tracepo ..., Koki Sanagi, (Tue Oct 19, 3:58 am)

Re: [sparc build bug] Re: [tip:perf/core] irq: Add tracepo ..., Peter Zijlstra, (Tue Oct 19, 4:25 am)

[PATCH] tracing: Cleanup the convoluted softirq tracepoints, Thomas Gleixner, (Tue Oct 19, 6:00 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Peter Zijlstra, (Tue Oct 19, 6:08 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Mathieu Desnoyers, (Tue Oct 19, 6:22 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Tue Oct 19, 6:41 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 6:54 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Mathieu Desnoyers, (Tue Oct 19, 7:00 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Tue Oct 19, 7:07 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Mathieu Desnoyers, (Tue Oct 19, 7:28 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 7:46 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Tue Oct 19, 12:49 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 1:55 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Tue Oct 19, 2:07 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., David Daney, (Tue Oct 19, 2:16 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 2:23 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Jason Baron, (Tue Oct 19, 2:28 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Jason Baron, (Tue Oct 19, 2:32 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., David Daney, (Tue Oct 19, 2:38 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Tue Oct 19, 2:45 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 2:47 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Tue Oct 19, 2:48 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Tue Oct 19, 2:55 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Tue Oct 19, 3:04 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 3:14 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Tue Oct 19, 3:17 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 3:23 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Tue Oct 19, 3:26 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Peter Zijlstra, (Tue Oct 19, 3:27 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 3:33 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Jason Baron, (Tue Oct 19, 3:38 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Mathieu Desnoyers, (Tue Oct 19, 3:41 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Tue Oct 19, 3:44 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Tue Oct 19, 3:49 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 3:56 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Tue Oct 19, 3:57 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 4:05 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Tue Oct 19, 4:09 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Tue Oct 19, 4:39 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 4:45 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Jason Baron, (Tue Oct 19, 5:43 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Tue Oct 19, 6:36 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Jason Baron, (Tue Oct 19, 6:52 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Jason Baron, (Wed Oct 20, 8:27 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Mathieu Desnoyers, (Wed Oct 20, 8:41 am)

[tip:perf/core] tracing: Cleanup the convoluted softirq tr ..., tip-bot for Thomas G ..., (Thu Oct 21, 7:52 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Thu Oct 21, 9:18 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Thu Oct 21, 10:05 am)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Thomas Gleixner, (Thu Oct 21, 12:56 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Mon Oct 25, 2:54 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Mathieu Desnoyers, (Mon Oct 25, 3:01 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Mon Oct 25, 3:12 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Mon Oct 25, 3:19 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Mon Oct 25, 3:31 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., H. Peter Anvin, (Mon Oct 25, 3:32 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Mathieu Desnoyers, (Mon Oct 25, 3:55 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Steven Rostedt, (Mon Oct 25, 5:39 pm)

Re: [PATCH] tracing: Cleanup the convoluted softirq tracep ..., Mathieu Desnoyers, (Mon Oct 25, 6:14 pm)

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