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Date: Mon, 25 Oct 2010 18:07:26 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Ingo Molnar <mingo@...e.hu> Cc: Steven Rostedt <rostedt@...dmis.org>, Jason Baron <jbaron@...hat.com>, LKML <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Frederic Weisbecker <fweisbec@...il.com>, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com>, Arnaldo Carvalho de Melo <acme@...hat.com>, masami.hiramatsu.pt@...achi.com Subject: Re: [PATCH][GIT PULL] tracing: Fix compile issue for trace_sched_wakeup.c On Mon, 2010-10-25 at 17:47 +0200, Peter Zijlstra wrote: > 0: 55 push %ebp 55 push %ebp > 1: 57 push %edi 57 push %edi > 2: 56 push %esi 56 push %esi > 3: 53 push %ebx 53 push %ebx > 4: 89 c3 mov %eax,%ebx 89 c3 mov %eax,%ebx > 6: 83 ec 08 sub $0x8,%esp 83 ec 08 sub $0x8,%esp > 9: 89 54 24 04 mov %edx,0x4(%esp) 89 54 24 04 mov %edx,0x4(%esp) > d: 8b 68 20 mov 0x20(%eax),%ebp 8b 68 20 mov 0x20(%eax),%ebp > 10: 8b 7d 00 mov 0x0(%ebp),%edi 8b 7d 00 mov 0x0(%ebp),%edi > 13: 9c pushf 9c pushf > 14: 58 pop %eax 58 pop %eax > 15: 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi 8d 74 26 00 lea 0x0(%esi,%eiz,1),%esi > 19: f6 c4 02 test $0x2,%ah f6 c4 02 test $0x2,%ah > 1c: 74 0f je 0x2d 74 0f je 0x2d > 1e: ba bd 04 00 00 mov $0x4bd,%edx ba bd 04 00 00 mov $0x4bd,%edx > 23: b8 02 0f 36 c1 mov $0xc1360f02,%eax b8 02 0f 36 c1 mov $0xc1360f02,%eax > 28: e8 0b 89 fe ff call 0xfffe8938 e8 0b 89 fe ff call 0xfffe8938 > 2d: 0f 1f 44 00 00 nopl 0x0(%eax,%eax,1) 0f 1f 44 00 00 nopl 0x0(%eax,%eax,1) > 32: eb 19 jmp 0x4d eb 19 jmp 0x4d > 34: 8b 35 b0 ad 40 c1 mov 0xc140adb0,%esi 8b 35 b0 ad 40 c1 mov 0xc140adb0,%esi > 3a: 85 f6 test %esi,%esi 85 f6 test %esi,%esi > 3c: 74 0f je 0x4d 74 0f je 0x4d > 3e: 8b 46 04 mov 0x4(%esi),%eax 8b 46 04 mov 0x4(%esi),%eax > 41: 89 da mov %ebx,%edx 89 da mov %ebx,%edx > 43: ff 16 call *(%esi) ff 16 call *(%esi) > 45: 83 c6 08 add $0x8,%esi 83 c6 08 add $0x8,%esi > 48: 83 3e 00 cmpl $0x0,(%esi) 83 3e 00 cmpl $0x0,(%esi) > 4b: eb ef jmp 0x3c eb ef jmp 0x3c > 4d: 89 d8 mov %ebx,%eax 89 d8 mov %ebx,%eax > 4f: b9 02 00 00 00 mov $0x2,%ecx b9 02 00 00 00 mov $0x2,%ecx > 54: 89 ea mov %ebp,%edx 89 ea mov %ebp,%edx > 56: 6a 00 push $0x0 6a 00 push $0x0 > 58: e8 b7 fe ff ff call 0xffffff14 e8 b7 fe ff ff call 0xffffff14 > 5d: 8b 43 1c mov 0x1c(%ebx),%eax 8b 43 1c mov 0x1c(%ebx),%eax > 60: 89 44 24 04 mov %eax,0x4(%esp) 89 44 24 04 mov %eax,0x4(%esp) > 64: f0 fe 07 lock incb (%edi) f0 fe 07 lock incb (%edi) > 67:* 0f 1f 44 00 00 nopl 0x0(%eax,%eax,1) e9 03 00 00 00 jmp 0x6f <--- PATCHED INSN > 6c: 58 pop %eax 58 pop %eax > 6d: eb 1d jmp 0x8c eb 1d jmp 0x8c > 6f: 8b 35 70 ad 40 c1 mov 0xc140ad70,%esi 8b 35 70 ad 40 c1 mov 0xc140ad70,%esi > 75: 85 f6 test %esi,%esi 85 f6 test %esi,%esi > 77: 74 13 je 0x8c 74 13 je 0x8c > 79: 8b 46 04 mov 0x4(%esi),%eax 8b 46 04 mov 0x4(%esi),%eax > 7c: 89 da mov %ebx,%edx 89 da mov %ebx,%edx > 7e: 8b 4c 24 04 mov 0x4(%esp),%ecx 8b 4c 24 04 mov 0x4(%esp),%ecx > 82: ff 16 call *(%esi) ff 16 call *(%esi) > 84: 83 c6 08 add $0x8,%esi 83 c6 08 add $0x8,%esi > 87: 83 3e 00 cmpl $0x0,(%esi) 83 3e 00 cmpl $0x0,(%esi) > 8a: eb eb jmp 0x77 eb eb jmp 0x77 > 8c: 89 d8 mov %ebx,%eax 89 d8 mov %ebx,%eax > 8e: ff 14 24 call *(%esp) ff 14 24 call *(%esp) > 91: 89 04 24 mov %eax,(%esp) 89 04 24 mov %eax,(%esp) Is it me, or is this the first site where %esp is loaded with a value?, which is _after_ the call that goes *bang*! > 94: 0f 1f 44 00 00 nopl 0x0(%eax,%eax,1) 0f 1f 44 00 00 nopl 0x0(%eax,%eax,1) > 99: eb 19 jmp 0xb4 eb 19 jmp 0xb4 > 9b: 8b 35 90 ad 40 c1 mov 0xc140ad90,%esi 8b 35 90 ad 40 c1 mov 0xc140ad90,%esi > a1: 85 f6 test %esi,%esi 85 f6 test %esi,%esi > a3: 74 0f je 0xb4 74 0f je 0xb4 > a5: 8b 46 04 mov 0x4(%esi),%eax 8b 46 04 mov 0x4(%esi),%eax > a8: 89 da mov %ebx,%edx 89 da mov %ebx,%edx > aa: ff 16 call *(%esi) ff 16 call *(%esi) > ac: 83 c6 08 add $0x8,%esi 83 c6 08 add $0x8,%esi > af: 83 3e 00 cmpl $0x0,(%esi) 83 3e 00 cmpl $0x0,(%esi) > b2: eb ef jmp 0xa3 eb ef jmp 0xa3 > b4: 89 f8 mov %edi,%eax 89 f8 mov %edi,%eax > b6: e8 56 04 28 00 call 0x280511 e8 56 04 28 00 call 0x280511 > bb: 83 3c 24 00 cmpl $0x0,(%esp) 83 3c 24 00 cmpl $0x0,(%esp) > bf: 74 13 je 0xd4 74 13 je 0xd4 > c1: 83 7b 24 02 cmpl $0x2,0x24(%ebx) 83 7b 24 02 cmpl $0x2,0x24(%ebx) > c5: 74 04 je 0xcb 74 04 je 0xcb > c7: 0f 0b ud2 0f 0b ud2 > c9: eb fe jmp 0xc9 eb fe jmp 0xc9 > cb: 89 ea mov %ebp,%edx 89 ea mov %ebp,%edx > cd: 89 d8 mov %ebx,%eax 89 d8 mov %ebx,%eax > cf: e8 a8 fe ff ff call 0xffffff7c e8 a8 fe ff ff call 0xffffff7c > d4: f6 43 24 02 testb $0x2,0x24(%ebx) f6 43 24 02 testb $0x2,0x24(%ebx) > d8: 75 1f jne 0xf9 75 1f jne 0xf9 > da: 80 3d c8 8c 59 c1 01 cmpb $0x1,0xc1598cc8 80 3d c8 8c 59 c1 01 cmpb $0x1,0xc1598cc8 > e1: 74 16 je 0xf9 74 16 je 0xf9 > e3: ba d9 04 00 00 mov $0x4d9,%edx ba d9 04 00 00 mov $0x4d9,%edx > e8: b8 02 0f 36 c1 mov $0xc1360f02,%eax b8 02 0f 36 c1 mov $0xc1360f02,%eax > ed: e8 46 88 fe ff call 0xfffe8938 e8 46 88 fe ff call 0xfffe8938 > f2: c6 05 c8 8c 59 c1 01 movb $0x1,0xc1598cc8 c6 05 c8 8c 59 c1 01 movb $0x1,0xc1598cc8 > f9: 83 63 24 fd andl $0xfffffffd,0x24(%ebx) 83 63 24 fd andl $0xfffffffd,0x24(%ebx) > fd: 83 c4 08 add $0x8,%esp 83 c4 08 add $0x8,%esp > 100: 5b pop %ebx 5b pop %ebx > 101: 5e pop %esi 5e pop %esi > 102: 5f pop %edi 5f pop %edi > 103: 5d pop %ebp 5d pop %ebp > 104: c3 ret c3 ret -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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