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Message-ID: <49F88E5A.8070908@myri.com>
Date: Wed, 29 Apr 2009 13:28:58 -0400
From: Andrew Gallatin <gallatin@...i.com>
To: Eric Dumazet <dada1@...mosbay.com>
CC: Herbert Xu <herbert@...dor.apana.org.au>,
David Miller <davem@...emloft.net>, brice@...i.com,
sgruszka@...hat.com, netdev@...r.kernel.org
Subject: Re: [PATCH] myr10ge: again fix lro_gen_skb() alignment
Eric Dumazet wrote:
>
> Sure, probably more cache misses or something...
Yes, that's what I thought. The code is much more complete,
and spread out than LRO, and seems to open itself to cache
misses.
> You could try a longer oprofile session (with at least one million
samples)
> and :
>
> opannotate -a vmlinux >/tmp/FILE
>
> And select 3 or 4 suspect functions : inet_gro_receive()
tcp_gro_receive(),
> skb_gro_receive(), skb_gro_header()
Here is the opreport -l output from this machine for GRO for a 25 minute
profiling run:
samples % image name app name
symbol name
3742674 32.2793 vmlinux vmlinux
copy_user_generic_string
890179 7.6775 myri10ge.ko myri10ge
myri10ge_poll
547572 4.7226 vmlinux vmlinux
inet_gro_receive
477479 4.1181 vmlinux vmlinux
skb_gro_receive
406562 3.5065 vmlinux vmlinux
free_hot_cold_page
396796 3.4222 vmlinux vmlinux
tcp_gro_receive
332364 2.8665 vmlinux vmlinux
__rmqueue_smallest
319455 2.7552 vmlinux vmlinux
skb_gro_header
269040 2.3204 vmlinux vmlinux
dev_gro_receive
252885 2.1810 vmlinux vmlinux
free_pages_bulk
247832 2.1375 vmlinux vmlinux
get_pageblock_flags_group
211592 1.8249 myri10ge.ko myri10ge
myri10ge_alloc_rx_pages
208867 1.8014 vmlinux vmlinux
__list_add
201491 1.7378 vmlinux vmlinux
tcp4_gro_receive
187591 1.6179 vmlinux vmlinux
__napi_gro_receive
170156 1.4675 vmlinux vmlinux
get_page_from_freelist
116321 1.0032 vmlinux vmlinux list_del
107994 0.9314 vmlinux vmlinux kfree
106434 0.9180 vmlinux vmlinux
skb_copy_datagram_iovec
100675 0.8683 vmlinux vmlinux put_page
And is here is the opannotate -a output for a few GRO functions. BTW,
did you mean -s
rather than -a? I'd naively think source might be more helpful. But
here is
what you asked for:
ffffffff80479f20 <inet_gro_receive>: /* inet_gro_receive total: 547572
5.2554 */
12187 0.1170 :ffffffff80479f20: push %r13
2611 0.0251 :ffffffff80479f22: mov %rdi,%r13
:ffffffff80479f25: push %r12
:ffffffff80479f27: push %rbp
4031 0.0387 :ffffffff80479f28: push %rbx
:ffffffff80479f29: mov %rsi,%rbx
:ffffffff80479f2c: mov $0x14,%esi
6303 0.0605 :ffffffff80479f31: mov %rbx,%rdi
:ffffffff80479f34: sub $0x8,%rsp
:ffffffff80479f38: callq ffffffff804357a1
<skb_gro_header>
:ffffffff80479f3d: test %rax,%rax
2494 0.0239 :ffffffff80479f40: mov %rax,%r8
:ffffffff80479f43: je ffffffff8047a0a4
<inet_gro_receive+0x184>
:ffffffff80479f49: movzbl 0x9(%rax),%eax
2541 0.0244 :ffffffff80479f4d: mov
0xffffffff80d06280(,%rax,8),%r11
33 3.2e-04 :ffffffff80479f55: test %r11,%r11
5 4.8e-05 :ffffffff80479f58: je ffffffff8047a0a4
<inet_gro_receive+0x184>
11016 0.1057 :ffffffff80479f5e: cmpq $0x0,0x20(%r11)
292 0.0028 :ffffffff80479f63: je ffffffff8047a0a4
<inet_gro_receive+0x184>
1 9.6e-06 :ffffffff80479f69: cmpb $0x45,(%r8)
4297 0.0412 :ffffffff80479f6d: jne ffffffff8047a0a4
<inet_gro_receive+0x184>
6086 0.0584 :ffffffff80479f73: mov $0x5,%eax
:ffffffff80479f78: mov %r8,%rcx
18706 0.1795 :ffffffff80479f7b: mov (%rcx),%edx
341 0.0033 :ffffffff80479f7d: sub $0x4,%eax
:ffffffff80479f80: jbe ffffffff80479fa6
<inet_gro_receive+0x86>
4609 0.0442 :ffffffff80479f82: add 0x4(%rcx),%edx
398 0.0038 :ffffffff80479f85: adc 0x8(%rcx),%edx
:ffffffff80479f88: adc 0xc(%rcx),%edx
4310 0.0414 :ffffffff80479f8b: adc 0x10(%rcx),%edx
790 0.0076 :ffffffff80479f8e: lea 0x4(%rcx),%rcx
:ffffffff80479f92: dec %eax
9097 0.0873 :ffffffff80479f94: jne ffffffff80479f8b
<inet_gro_receive+0x6b>
541 0.0052 :ffffffff80479f96: adc $0x0,%edx
:ffffffff80479f99: mov %edx,%eax
1919 0.0184 :ffffffff80479f9b: shr $0x10,%edx
535 0.0051 :ffffffff80479f9e: add %ax,%dx
:ffffffff80479fa1: adc $0x0,%edx
3633 0.0349 :ffffffff80479fa4: not %edx
683 0.0066 :ffffffff80479fa6: test %dx,%dx
1 9.6e-06 :ffffffff80479fa9: jne ffffffff8047a0a4
<inet_gro_receive+0x184>
4725 0.0453 :ffffffff80479faf: movzwl 0x2(%r8),%eax
9728 0.0934 :ffffffff80479fb4: mov 0x68(%rbx),%edx
8 7.7e-05 :ffffffff80479fb7: mov $0x1,%ebp
43000 0.4127 :ffffffff80479fbc: sub 0x38(%rbx),%edx
11149 0.1070 :ffffffff80479fbf: mov %eax,%ecx
:ffffffff80479fc1: shl $0x8,%eax
66497 0.6382 :ffffffff80479fc4: shr $0x8,%ecx
735 0.0071 :ffffffff80479fc7: or %ecx,%eax
:ffffffff80479fc9: movzwl %ax,%eax
5459 0.0524 :ffffffff80479fcc: cmp %edx,%eax
522 0.0050 :ffffffff80479fce: jne ffffffff80479fdc
<inet_gro_receive+0xbc>
:ffffffff80479fd0: xor %ebp,%ebp
5373 0.0516 :ffffffff80479fd2: cmpw $0x40,0x6(%r8)
345 0.0033 :ffffffff80479fd8: setne %bpl
:ffffffff80479fdc: movzwl 0x4(%r8),%eax
2384 0.0229 :ffffffff80479fe1: mov 0x0(%r13),%r10
631 0.0061 :ffffffff80479fe5: mov %eax,%edx
:ffffffff80479fe7: shl $0x8,%eax
3044 0.0292 :ffffffff80479fea: shr $0x8,%edx
303 0.0029 :ffffffff80479fed: or %edx,%eax
:ffffffff80479fef: movzwl %ax,%r12d
2747 0.0264 :ffffffff80479ff3: jmp ffffffff8047a071
<inet_gro_receive+0x151>
2109 0.0202 :ffffffff80479ff5: lea 0x38(%r10),%r9
12 1.2e-04 :ffffffff80479ff9: cmpl $0x0,0x4(%r9)
23 2.2e-04 :ffffffff80479ffe: je ffffffff8047a06e
<inet_gro_receive+0x14e>
2104 0.0202 :ffffffff8047a000: mov 0xac(%r10),%edi
2 1.9e-05 :ffffffff8047a007: add 0xc0(%r10),%rdi
:ffffffff8047a00e: mov 0x9(%rdi),%sil
2391 0.0229 :ffffffff8047a012: mov 0x1(%rdi),%al
2 1.9e-05 :ffffffff8047a015: xor 0x9(%r8),%sil
7 6.7e-05 :ffffffff8047a019: xor 0x1(%r8),%al
2101 0.0202 :ffffffff8047a01d: mov 0xc(%rdi),%edx
1 9.6e-06 :ffffffff8047a020: mov 0x10(%rdi),%ecx
:ffffffff8047a023: xor 0xc(%r8),%edx
2775 0.0266 :ffffffff8047a027: xor 0x10(%r8),%ecx
:ffffffff8047a02b: or %esi,%eax
:ffffffff8047a02d: movzbl %al,%eax
62734 0.6021 :ffffffff8047a030: or %edx,%ecx
:ffffffff8047a032: or %eax,%ecx
:ffffffff8047a034: je ffffffff8047a040
<inet_gro_receive+0x120>
:ffffffff8047a036: movl $0x0,0x4(%r9)
:ffffffff8047a03e: jmp ffffffff8047a06e
<inet_gro_receive+0x14e>
2106 0.0202 :ffffffff8047a040: movzwl 0x4(%rdi),%edx
:ffffffff8047a044: mov 0x8(%rdi),%al
:ffffffff8047a047: xor 0x8(%r8),%eax
64244 0.6166 :ffffffff8047a04b: mov %edx,%ecx
:ffffffff8047a04d: shl $0x8,%edx
:ffffffff8047a050: shr $0x8,%ecx
2072 0.0199 :ffffffff8047a053: movzbl %al,%eax
:ffffffff8047a056: or 0x8(%r9),%eax
:ffffffff8047a05a: or %ecx,%edx
2629 0.0252 :ffffffff8047a05c: add 0xc(%r9),%edx
2 1.9e-05 :ffffffff8047a060: movzwl %dx,%edx
:ffffffff8047a063: xor %r12d,%edx
58223 0.5588 :ffffffff8047a066: or %edx,%eax
3 2.9e-05 :ffffffff8047a068: or %ebp,%eax
:ffffffff8047a06a: mov %eax,0x8(%r9)
21878 0.2100 :ffffffff8047a06e: mov (%r10),%r10
2156 0.0207 :ffffffff8047a071: test %r10,%r10
:ffffffff8047a074: jne ffffffff80479ff5
<inet_gro_receive+0xd5>
3007 0.0289 :ffffffff8047a07a: mov 0x38(%rbx),%eax
61 5.9e-04 :ffffffff8047a07d: or %ebp,0x40(%rbx)
3 2.9e-05 :ffffffff8047a080: mov %rbx,%rsi
3091 0.0297 :ffffffff8047a083: mov %r13,%rdi
41 3.9e-04 :ffffffff8047a086: add $0x14,%eax
:ffffffff8047a089: mov %eax,0x38(%rbx)
3704 0.0355 :ffffffff8047a08c: sub 0xc0(%rbx),%eax
33 3.2e-04 :ffffffff8047a092: add 0xc8(%rbx),%eax
:ffffffff8047a098: mov %eax,0xa8(%rbx)
2468 0.0237 :ffffffff8047a09e: callq *0x20(%r11)
20011 0.1921 :ffffffff8047a0a2: jmp ffffffff8047a0ab
<inet_gro_receive+0x18b>
:ffffffff8047a0a4: xor %eax,%eax
:ffffffff8047a0a6: mov $0x1,%ebp
24082 0.2311 :ffffffff8047a0ab: or %ebp,0x40(%rbx)
626 0.0060 :ffffffff8047a0ae: pop %r10
1718 0.0165 :ffffffff8047a0b0: pop %rbx
446 0.0043 :ffffffff8047a0b1: pop %rbp
4074 0.0391 :ffffffff8047a0b2: pop %r12
2089 0.0200 :ffffffff8047a0b4: pop %r13
434 0.0042 :ffffffff8047a0b6: retq
ffffffff80430ea9 <skb_gro_receive>: /* skb_gro_receive total: 477479
4.5827 */
2158 0.0207 :ffffffff80430ea9: push %r15
2492 0.0239 :ffffffff80430eab: mov %rdi,%r15
:ffffffff80430eae: push %r14
:ffffffff80430eb0: push %r13
2432 0.0233 :ffffffff80430eb2: push %r12
1 9.6e-06 :ffffffff80430eb4: push %rbp
1 9.6e-06 :ffffffff80430eb5: mov %rsi,%rbp
2430 0.0233 :ffffffff80430eb8: push %rbx
:ffffffff80430eb9: sub $0x8,%rsp
:ffffffff80430ebd: mov 0x68(%rsi),%ecx
2420 0.0232 :ffffffff80430ec0: mov (%rdi),%r12
1 9.6e-06 :ffffffff80430ec3: mov %ecx,%r14d
1 9.6e-06 :ffffffff80430ec6: sub 0x38(%rsi),%r14d
2317 0.0222 :ffffffff80430eca: mov %r14d,%eax
1 9.6e-06 :ffffffff80430ecd: add 0x68(%r12),%eax
1 9.6e-06 :ffffffff80430ed2: cmp $0xffff,%eax
3865 0.0371 :ffffffff80430ed7: ja ffffffff80431261
<skb_gro_receive+0x3b8>
:ffffffff80430edd: mov 0xb8(%r12),%eax
:ffffffff80430ee5: mov 0xc0(%r12),%rdx
8082 0.0776 :ffffffff80430eed: lea (%rdx,%rax,1),%rsi
:ffffffff80430ef1: cmpq $0x0,0x18(%rsi)
2 1.9e-05 :ffffffff80430ef6: jne ffffffff804311ab
<skb_gro_receive+0x302>
9249 0.0888 :ffffffff80430efc: mov %ecx,%edi
:ffffffff80430efe: sub 0x6c(%rbp),%edi
6 5.8e-05 :ffffffff80430f01: cmp 0x38(%rbp),%edi
3104 0.0298 :ffffffff80430f04: ja ffffffff80430fe2
<skb_gro_receive+0x139>
2 1.9e-05 :ffffffff80430f0a: mov 0xb8(%rbp),%ecx
:ffffffff80430f10: movzwl 0x4(%rsi),%edx
8825 0.0847 :ffffffff80430f14: add 0xc0(%rbp),%rcx
:ffffffff80430f1b: movzwl 0x4(%rcx),%eax
21 2.0e-04 :ffffffff80430f1f: add %edx,%eax
19668 0.1888 :ffffffff80430f21: cmp $0x12,%eax
1 9.6e-06 :ffffffff80430f24: ja ffffffff80431261
<skb_gro_receive+0x3b8>
:ffffffff80430f2a: mov 0x38(%rcx),%eax
1974 0.0189 :ffffffff80430f2d: add 0x38(%rbp),%eax
:ffffffff80430f30: cld
:ffffffff80430f31: sub %edi,%eax
7666 0.0736 :ffffffff80430f33: mov %eax,0x38(%rcx)
2 1.9e-05 :ffffffff80430f36: mov 0xb8(%rbp),%edx
:ffffffff80430f3c: add 0xc0(%rbp),%rdx
52468 0.5036 :ffffffff80430f43: mov 0x3c(%rdx),%eax
2 1.9e-05 :ffffffff80430f46: add 0x68(%rbp),%eax
1 9.6e-06 :ffffffff80430f49: sub 0x6c(%rbp),%eax
6592 0.0633 :ffffffff80430f4c: sub 0x38(%rbp),%eax
:ffffffff80430f4f: mov %eax,0x3c(%rdx)
:ffffffff80430f52: mov 0xb8(%r12),%eax
23018 0.2209 :ffffffff80430f5a: add 0xc0(%r12),%rax
1 9.6e-06 :ffffffff80430f62: mov 0xb8(%rbp),%esi
:ffffffff80430f68: add 0xc0(%rbp),%rsi
8477 0.0814 :ffffffff80430f6f: movzwl 0x4(%rax),%edi
6 5.8e-05 :ffffffff80430f73: movzwl 0x4(%rsi),%ecx
:ffffffff80430f77: add $0x30,%rsi
21338 0.2048 :ffffffff80430f7b: shl $0x4,%rdi
3 2.9e-05 :ffffffff80430f7f: lea 0x30(%rdi,%rax,1),%rdi
1 9.6e-06 :ffffffff80430f84: shl $0x4,%rcx
150632 1.4457 :ffffffff80430f88: rep movsb %ds:(%rsi),%es:(%rdi)
3988 0.0383 :ffffffff80430f8a: mov 0xb8(%r12),%eax
2015 0.0193 :ffffffff80430f92: mov 0xb8(%rbp),%ecx
11 1.1e-04 :ffffffff80430f98: add 0xc0(%r12),%rax
8 7.7e-05 :ffffffff80430fa0: mov 0xc0(%rbp),%rdx
3295 0.0316 :ffffffff80430fa7: mov 0x4(%rdx,%rcx,1),%edx
:ffffffff80430fab: add %dx,0x4(%rax)
8 7.7e-05 :ffffffff80430faf: mov 0xb8(%rbp),%edx
2507 0.0241 :ffffffff80430fb5: mov 0xc0(%rbp),%rax
:ffffffff80430fbc: movw $0x0,0x4(%rax,%rdx,1)
3233 0.0310 :ffffffff80430fc3: mov 0x6c(%rbp),%eax
1 9.6e-06 :ffffffff80430fc6: sub %eax,0xd0(%rbp)
:ffffffff80430fcc: sub %eax,0x68(%rbp)
41540 0.3987 :ffffffff80430fcf: movl $0x0,0x6c(%rbp)
:ffffffff80430fd6: movl $0x1,0x48(%rbp)
:ffffffff80430fdd: jmpq ffffffff8043123f
<skb_gro_receive+0x396>
:ffffffff80430fe2: mov 0xc8(%r12),%rax
:ffffffff80430fea: mov 0x20(%r12),%rdi
:ffffffff80430fef: mov %eax,%r13d
:ffffffff80430ff2: sub %edx,%r13d
:ffffffff80430ff5: mov $0x20,%edx
:ffffffff80430ffa: mov %r13d,%esi
:ffffffff80430ffd: add 0x38(%r12),%esi
:ffffffff80431002: callq ffffffff8042ffe0
<__netdev_alloc_skb>
:ffffffff80431007: mov %rax,%rbx
:ffffffff8043100a: mov $0xfffffff4,%eax
:ffffffff8043100f: test %rbx,%rbx
:ffffffff80431012: je ffffffff80431266
<skb_gro_receive+0x3bd>
:ffffffff80431018: mov %r12,%rsi
:ffffffff8043101b: mov %rbx,%rdi
:ffffffff8043101e: callq ffffffff8042e2c0
<__copy_skb_header>
:ffffffff80431023: mov 0x70(%r12),%eax
:ffffffff80431028: add %r13d,0xb4(%rbx)
:ffffffff8043102f: mov %ax,0x70(%rbx)
:ffffffff80431033: movslq %r13d,%rax
:ffffffff80431036: add %rax,0xc8(%rbx)
:ffffffff8043103d: cmpl $0x0,0x6c(%rbx)
:ffffffff80431041: mov 0x38(%r12),%edx
:ffffffff80431046: mov 0xb4(%rbx),%eax
:ffffffff8043104c: je ffffffff80431052
<skb_gro_receive+0x1a9>
:ffffffff8043104e: ud2a
:ffffffff80431050: jmp ffffffff80431050
<skb_gro_receive+0x1a7>
:ffffffff80431052: lea (%rdx,%rax,1),%eax
:ffffffff80431055: add %edx,0x68(%rbx)
:ffffffff80431058: mov 0xc8(%r12),%rcx
:ffffffff80431060: mov 0xc8(%rbx),%rdx
:ffffffff80431067: sub 0xc0(%rbx),%edx
:ffffffff8043106d: mov %eax,0xb4(%rbx)
:ffffffff80431073: mov 0xb0(%r12),%eax
:ffffffff8043107b: add 0xc0(%r12),%rax
:ffffffff80431083: sub %ecx,%eax
:ffffffff80431085: add %edx,%eax
:ffffffff80431087: mov %eax,0xb0(%rbx)
:ffffffff8043108d: mov 0xac(%r12),%eax
:ffffffff80431095: add 0xc0(%r12),%rax
:ffffffff8043109d: sub %ecx,%eax
:ffffffff8043109f: add %edx,%eax
:ffffffff804310a1: mov %eax,0xac(%rbx)
:ffffffff804310a7: mov 0xa8(%r12),%eax
:ffffffff804310af: add 0xc0(%r12),%rax
:ffffffff804310b7: sub %ecx,%eax
:ffffffff804310b9: add %edx,%eax
:ffffffff804310bb: mov %eax,0xa8(%rbx)
:ffffffff804310c1: mov 0x68(%r12),%eax
:ffffffff804310c6: mov 0x38(%r12),%edx
:ffffffff804310cb: sub %edx,%eax
:ffffffff804310cd: cmp 0x6c(%r12),%eax
:ffffffff804310d2: mov %eax,0x68(%r12)
:ffffffff804310d7: jae ffffffff804310dd
<skb_gro_receive+0x234>
:ffffffff804310d9: ud2a
:ffffffff804310db: jmp ffffffff804310db
<skb_gro_receive+0x232>
:ffffffff804310dd: mov 0xb0(%r12),%esi
:ffffffff804310e5: mov %edx,%ecx
:ffffffff804310e7: add 0xc8(%r12),%rcx
:ffffffff804310ef: add 0xc0(%r12),%rsi
:ffffffff804310f7: mov 0xb0(%rbx),%edi
:ffffffff804310fd: add 0xc0(%rbx),%rdi
:ffffffff80431104: cld
:ffffffff80431105: mov %rcx,0xc8(%r12)
:ffffffff8043110d: sub %rsi,%rcx
:ffffffff80431110: rep movsb %ds:(%rsi),%es:(%rdi)
:ffffffff80431112: lea 0x38(%rbx),%rdi
:ffffffff80431116: lea 0x38(%r12),%rsi
:ffffffff8043111b: mov $0x5,%cl
:ffffffff8043111d: rep movsl %ds:(%rsi),%es:(%rdi)
:ffffffff8043111f: mov 0xb8(%rbx),%edx
:ffffffff80431125: mov 0xc0(%rbx),%rax
:ffffffff8043112c: mov %r12,0x18(%rax,%rdx,1)
:ffffffff80431131: mov 0xb8(%r12),%edx
:ffffffff80431139: mov 0xc0(%r12),%rax
:ffffffff80431141: mov 0xb8(%rbx),%esi
:ffffffff80431147: mov 0xc0(%rbx),%rcx
:ffffffff8043114e: mov 0x6(%rax,%rdx,1),%ax
:ffffffff80431153: mov %ax,0x6(%rcx,%rsi,1)
:ffffffff80431158: testb $0x10,0x7c(%r12)
:ffffffff8043115e: je ffffffff80431164
<skb_gro_receive+0x2bb>
:ffffffff80431160: ud2a
:ffffffff80431162: jmp ffffffff80431162
<skb_gro_receive+0x2b9>
:ffffffff80431164: mov 0xb8(%r12),%eax
:ffffffff8043116c: orb $0x10,0x7c(%r12)
:ffffffff80431172: add 0xc0(%r12),%rax
:ffffffff8043117a: lock addl $0x10000,(%rax)
:ffffffff80431181: mov 0x68(%r12),%eax
:ffffffff80431186: mov %r12,0x8(%rbx)
:ffffffff8043118a: add %eax,0x6c(%rbx)
:ffffffff8043118d: add %eax,0xd0(%rbx)
:ffffffff80431193: add %eax,0x68(%rbx)
:ffffffff80431196: mov %rbx,(%r15)
:ffffffff80431199: mov (%r12),%rax
:ffffffff8043119d: mov %rax,(%rbx)
:ffffffff804311a0: movq $0x0,(%r12)
:ffffffff804311a8: mov %rbx,%r12
:ffffffff804311ab: mov 0x68(%rbp),%ecx
:ffffffff804311ae: sub 0x6c(%rbp),%ecx
:ffffffff804311b1: cmp %ecx,0x38(%rbp)
:ffffffff804311b4: jbe ffffffff804311f3
<skb_gro_receive+0x34a>
:ffffffff804311b6: mov 0xb8(%rbp),%edx
:ffffffff804311bc: add 0xc0(%rbp),%rdx
:ffffffff804311c3: mov 0x38(%rdx),%eax
:ffffffff804311c6: add 0x38(%rbp),%eax
:ffffffff804311c9: sub %ecx,%eax
:ffffffff804311cb: mov %eax,0x38(%rdx)
:ffffffff804311ce: mov 0xb8(%rbp),%edx
:ffffffff804311d4: add 0xc0(%rbp),%rdx
:ffffffff804311db: mov 0x3c(%rdx),%eax
:ffffffff804311de: add 0x68(%rbp),%eax
:ffffffff804311e1: sub 0x6c(%rbp),%eax
:ffffffff804311e4: sub 0x38(%rbp),%eax
:ffffffff804311e7: mov %eax,0x3c(%rdx)
:ffffffff804311ea: mov 0x68(%rbp),%eax
:ffffffff804311ed: sub 0x6c(%rbp),%eax
:ffffffff804311f0: mov %eax,0x38(%rbp)
:ffffffff804311f3: mov 0x68(%rbp),%eax
:ffffffff804311f6: mov 0x38(%rbp),%edx
:ffffffff804311f9: sub %edx,%eax
:ffffffff804311fb: cmp 0x6c(%rbp),%eax
:ffffffff804311fe: mov %eax,0x68(%rbp)
:ffffffff80431201: jae ffffffff80431207
<skb_gro_receive+0x35e>
:ffffffff80431203: ud2a
:ffffffff80431205: jmp ffffffff80431205
<skb_gro_receive+0x35c>
:ffffffff80431207: mov %edx,%eax
:ffffffff80431209: add %rax,0xc8(%rbp)
:ffffffff80431210: mov 0x8(%r12),%rax
:ffffffff80431215: mov %rbp,0x8(%r12)
:ffffffff8043121a: mov %rbp,(%rax)
:ffffffff8043121d: testb $0x10,0x7c(%rbp)
:ffffffff80431221: je ffffffff80431227
<skb_gro_receive+0x37e>
:ffffffff80431223: ud2a
:ffffffff80431225: jmp ffffffff80431225
<skb_gro_receive+0x37c>
:ffffffff80431227: mov 0xb8(%rbp),%eax
:ffffffff8043122d: orb $0x10,0x7c(%rbp)
:ffffffff80431231: add 0xc0(%rbp),%rax
:ffffffff80431238: lock addl $0x10000,(%rax)
34919 0.3351 :ffffffff8043123f: add %r14d,0x6c(%r12)
1989 0.0191 :ffffffff80431244: add %r14d,0xd0(%r12)
1 9.6e-06 :ffffffff8043124c: xor %eax,%eax
:ffffffff8043124e: add %r14d,0x68(%r12)
20605 0.1978 :ffffffff80431253: incl 0x44(%r12)
:ffffffff80431258: movl $0x1,0x3c(%rbp)
:ffffffff8043125f: jmp ffffffff80431266
<skb_gro_receive+0x3bd>
:ffffffff80431261: mov $0xfffffff9,%eax
13260 0.1273 :ffffffff80431266: pop %r11
1946 0.0187 :ffffffff80431268: pop %rbx
2010 0.0193 :ffffffff80431269: pop %rbp
64 6.1e-04 :ffffffff8043126a: pop %r12
1948 0.0187 :ffffffff8043126c: pop %r13
2746 0.0264 :ffffffff8043126e: pop %r14
57 5.5e-04 :ffffffff80431270: pop %r15
2067 0.0198 :ffffffff80431272: retq
ffffffff80460663 <tcp_gro_receive>: /* tcp_gro_receive total: 396796
3.8083 */
4433 0.0425 :ffffffff80460663: push %r15
2204 0.0212 :ffffffff80460665: push %r14
:ffffffff80460667: mov %rdi,%r14
:ffffffff8046066a: push %r13
2275 0.0218 :ffffffff8046066c: push %r12
:ffffffff8046066e: mov %rsi,%r12
:ffffffff80460671: mov $0x14,%esi
5933 0.0569 :ffffffff80460676: mov %r12,%rdi
:ffffffff80460679: push %rbp
:ffffffff8046067a: push %rbx
2180 0.0209 :ffffffff8046067b: sub $0x8,%rsp
:ffffffff8046067f: callq ffffffff804357a1
<skb_gro_header>
:ffffffff80460684: test %rax,%rax
3218 0.0309 :ffffffff80460687: je ffffffff804607ed
<tcp_gro_receive+0x18a>
:ffffffff8046068d: mov 0xc(%rax),%al
1 9.6e-06 :ffffffff80460690: shr $0x4,%al
3528 0.0339 :ffffffff80460693: movzbl %al,%eax
:ffffffff80460696: lea 0x0(,%rax,4),%r13d
1 9.6e-06 :ffffffff8046069e: cmp $0x13,%r13d
2773 0.0266 :ffffffff804606a2: jbe ffffffff804607ed
<tcp_gro_receive+0x18a>
:ffffffff804606a8: mov %r13d,%esi
:ffffffff804606ab: mov %r12,%rdi
3327 0.0319 :ffffffff804606ae: callq ffffffff804357a1
<skb_gro_header>
:ffffffff804606b3: test %rax,%rax
2094 0.0201 :ffffffff804606b6: mov %rax,%r8
:ffffffff804606b9: je ffffffff804607ed
<tcp_gro_receive+0x18a>
:ffffffff804606bf: lea 0x38(%r12),%r15
2245 0.0215 :ffffffff804606c4: add %r13d,(%r15)
:ffffffff804606c7: mov 0x68(%r12),%ebp
:ffffffff804606cc: sub 0x38(%r12),%ebp
2394 0.0230 :ffffffff804606d1: mov 0xc(%rax),%ebx
:ffffffff804606d4: jmp ffffffff80460710
<tcp_gro_receive+0xad>
2111 0.0203 :ffffffff804606d6: lea 0x38(%rdi),%r9
3 2.9e-05 :ffffffff804606da: cmpl $0x0,0x4(%r9)
21 2.0e-04 :ffffffff804606df: je ffffffff8046070d
<tcp_gro_receive+0xaa>
2592 0.0249 :ffffffff804606e1: mov 0xa8(%rdi),%eax
:ffffffff804606e7: mov 0xc0(%rdi),%r10
:ffffffff804606ee: mov 0x2(%r8),%dx
2440 0.0234 :ffffffff804606f3: lea (%r10,%rax,1),%rcx
:ffffffff804606f7: mov (%r8),%eax
1 9.6e-06 :ffffffff804606fa: xor 0x2(%rcx),%dx
6275 0.0602 :ffffffff804606fe: xor (%rcx),%eax
3 2.9e-05 :ffffffff80460700: or %ax,%dx
:ffffffff80460703: je ffffffff8046071d
<tcp_gro_receive+0xba>
:ffffffff80460705: movl $0x0,0x4(%r9)
:ffffffff8046070d: mov %rdi,%r14
2920 0.0280 :ffffffff80460710: mov (%r14),%rdi
18 1.7e-04 :ffffffff80460713: test %rdi,%rdi
2 1.9e-05 :ffffffff80460716: jne ffffffff804606d6
<tcp_gro_receive+0x73>
33 3.2e-04 :ffffffff80460718: jmpq ffffffff80460807
<tcp_gro_receive+0x1a4>
4253 0.0408 :ffffffff8046071d: mov 0xe(%r8),%ax
2125 0.0204 :ffffffff80460722: xor 0xe(%rcx),%ax
2 1.9e-05 :ffffffff80460726: mov %ebx,%edx
:ffffffff80460728: and $0x8000,%edx
8066 0.0774 :ffffffff8046072e: or 0x8(%r9),%edx
:ffffffff80460732: movzwl %ax,%esi
:ffffffff80460735: mov 0x8(%r8),%eax
64740 0.6214 :ffffffff80460739: xor 0x8(%rcx),%eax
:ffffffff8046073c: or %eax,%esi
:ffffffff8046073e: mov %ebx,%eax
2084 0.0200 :ffffffff80460740: xor 0xc(%rcx),%eax
:ffffffff80460743: and $0x76,%ah
:ffffffff80460746: or %eax,%edx
2132 0.0205 :ffffffff80460748: or %edx,%esi
:ffffffff8046074a: mov $0x14,%edx
:ffffffff8046074f: jmp ffffffff8046075e
<tcp_gro_receive+0xfb>
:ffffffff80460751: movslq %edx,%rax
:ffffffff80460754: add $0x4,%edx
:ffffffff80460757: mov (%r8,%rax,1),%esi
:ffffffff8046075b: xor (%rcx,%rax,1),%esi
3670 0.0352 :ffffffff8046075e: test %esi,%esi
2162 0.0208 :ffffffff80460760: jne ffffffff80460767
<tcp_gro_receive+0x104>
:ffffffff80460762: cmp %r13d,%edx
1 9.6e-06 :ffffffff80460765: jb ffffffff80460751
<tcp_gro_receive+0xee>
50209 0.4819 :ffffffff80460767: mov 0xb8(%rdi),%eax
4473 0.0429 :ffffffff8046076d: mov 0x4(%rcx),%edx
:ffffffff80460770: bswap %edx
9554 0.0917 :ffffffff80460772: mov 0x4(%r8),%ecx
:ffffffff80460776: bswap %ecx
:ffffffff80460778: movzwl 0x6(%r10,%rax,1),%r13d
7572 0.0727 :ffffffff8046077e: mov 0x68(%rdi),%eax
:ffffffff80460781: sub 0x38(%rdi),%eax
:ffffffff80460784: add %edx,%eax
9803 0.0941 :ffffffff80460786: xor %eax,%ecx
:ffffffff80460788: cmp %r13d,%ebp
:ffffffff8046078b: seta %al
50608 0.4857 :ffffffff8046078e: test %ebp,%ebp
:ffffffff80460790: sete %dl
:ffffffff80460793: or %edx,%eax
3161 0.0303 :ffffffff80460795: movzbl %al,%eax
:ffffffff80460798: or %eax,%esi
:ffffffff8046079a: or %esi,%ecx
3278 0.0315 :ffffffff8046079c: jne ffffffff804607f6
<tcp_gro_receive+0x193>
:ffffffff8046079e: mov %r12,%rsi
2 1.9e-05 :ffffffff804607a1: mov %r14,%rdi
2579 0.0248 :ffffffff804607a4: callq ffffffff80430ea9
<skb_gro_receive>
2059 0.0198 :ffffffff804607a9: test %eax,%eax
49 4.7e-04 :ffffffff804607ab: jne ffffffff804607f6
<tcp_gro_receive+0x193>
:ffffffff804607ad: mov (%r14),%rcx
1945 0.0187 :ffffffff804607b0: mov %ebx,%edx
3 2.9e-05 :ffffffff804607b2: and $0x900,%edx
:ffffffff804607b8: mov 0xa8(%rcx),%eax
2530 0.0243 :ffffffff804607be: add 0xc0(%rcx),%rax
3 2.9e-05 :ffffffff804607c5: or %edx,0xc(%rax)
13 1.2e-04 :ffffffff804607c8: xor %eax,%eax
4881 0.0468 :ffffffff804607ca: cmp %r13d,%ebp
:ffffffff804607cd: setb %al
:ffffffff804607d0: and $0x2f00,%ebx
1912 0.0184 :ffffffff804607d6: or %ebx,%eax
:ffffffff804607d8: test %rcx,%rcx
:ffffffff804607db: je ffffffff80460816
<tcp_gro_receive+0x1b3>
2163 0.0208 :ffffffff804607dd: cmpl $0x0,0x4(%r15)
136 0.0013 :ffffffff804607e2: je ffffffff804607e8
<tcp_gro_receive+0x185>
2455 0.0236 :ffffffff804607e4: test %eax,%eax
57 5.5e-04 :ffffffff804607e6: je ffffffff80460816
<tcp_gro_receive+0x1b3>
148 0.0014 :ffffffff804607e8: mov %r14,%rdi
735 0.0071 :ffffffff804607eb: jmp ffffffff80460818
<tcp_gro_receive+0x1b5>
:ffffffff804607ed: xor %edi,%edi
:ffffffff804607ef: mov $0x1,%eax
:ffffffff804607f4: jmp ffffffff80460818
<tcp_gro_receive+0x1b5>
68 6.5e-04 :ffffffff804607f6: xor %eax,%eax
1 9.6e-06 :ffffffff804607f8: test %ebp,%ebp
67 6.4e-04 :ffffffff804607fa: sete %al
47 4.5e-04 :ffffffff804607fd: and $0x2f00,%ebx
:ffffffff80460803: or %ebx,%eax
58 5.6e-04 :ffffffff80460805: jmp ffffffff804607dd
<tcp_gro_receive+0x17a>
122 0.0012 :ffffffff80460807: xor %eax,%eax
9 8.6e-05 :ffffffff80460809: test %ebp,%ebp
:ffffffff8046080b: sete %al
67 6.4e-04 :ffffffff8046080e: and $0x2f00,%ebx
6 5.8e-05 :ffffffff80460814: or %ebx,%eax
1995 0.0191 :ffffffff80460816: xor %edi,%edi
68 6.5e-04 :ffffffff80460818: or %eax,0x40(%r12)
275 0.0026 :ffffffff8046081d: mov %rdi,%rax
2037 0.0196 :ffffffff80460820: pop %r11
191 0.0018 :ffffffff80460822: pop %rbx
4346 0.0417 :ffffffff80460823: pop %rbp
4739 0.0455 :ffffffff80460824: pop %r12
167 0.0016 :ffffffff80460826: pop %r13
23735 0.2278 :ffffffff80460828: pop %r14
56070 0.5381 :ffffffff8046082a: pop %r15
140 0.0013 :ffffffff8046082c: retq
ffffffff804357a1 <skb_gro_header>: /* skb_gro_header total: 319455
3.0660 */
13604 0.1306 :ffffffff804357a1: push %rbp
14938 0.1434 :ffffffff804357a2: push %rbx
:ffffffff804357a3: mov %rdi,%rbx
:ffffffff804357a6: sub $0x8,%rsp
18392 0.1765 :ffffffff804357aa: mov 0x38(%rdi),%ebp
:ffffffff804357ad: mov 0x68(%rdi),%edx
1 9.6e-06 :ffffffff804357b0: add %ebp,%esi
20559 0.1973 :ffffffff804357b2: mov %edx,%edi
:ffffffff804357b4: sub 0x6c(%rbx),%edi
:ffffffff804357b7: jne ffffffff804357cc
<skb_gro_header+0x2b>
36626 0.3515 :ffffffff804357b9: mov 0xb8(%rbx),%ecx
2 1.9e-05 :ffffffff804357bf: mov 0xc0(%rbx),%rax
3 2.9e-05 :ffffffff804357c6: cmp %esi,0x3c(%rax,%rcx,1)
18577 0.1783 :ffffffff804357ca: jae ffffffff804357ee
<skb_gro_header+0x4d>
:ffffffff804357cc: cmp %edi,%esi
:ffffffff804357ce: jbe ffffffff804357e3
<skb_gro_header+0x42>
:ffffffff804357d0: cmp %edx,%esi
:ffffffff804357d2: ja ffffffff80435833
<skb_gro_header+0x92>
:ffffffff804357d4: sub %edi,%esi
:ffffffff804357d6: mov %rbx,%rdi
:ffffffff804357d9: callq ffffffff8042f6ee
<__pskb_pull_tail>
:ffffffff804357de: test %rax,%rax
:ffffffff804357e1: je ffffffff80435833
<skb_gro_header+0x92>
:ffffffff804357e3: mov %ebp,%eax
:ffffffff804357e5: add 0xc8(%rbx),%rax
:ffffffff804357ec: jmp ffffffff80435835
<skb_gro_header+0x94>
3 2.9e-05 :ffffffff804357ee: add 0xc0(%rbx),%rcx
25999 0.2495 :ffffffff804357f5: mov $0x1e0000000000,%rax
:ffffffff804357ff: mov $0x6db6db6db6db6db7,%rdx
44557 0.4276 :ffffffff80435809: add 0x30(%rcx),%rax
:ffffffff8043580d: sar $0x3,%rax
12588 0.1208 :ffffffff80435811: imul %rdx,%rax
10104 0.0970 :ffffffff80435815: mov $0xffff880000000000,%rdx
:ffffffff8043581f: shl $0xc,%rax
:ffffffff80435823: add %rdx,%rax
16404 0.1574 :ffffffff80435826: mov 0x38(%rcx),%edx
:ffffffff80435829: add %rdx,%rax
:ffffffff8043582c: mov %ebp,%edx
15264 0.1465 :ffffffff8043582e: add %rdx,%rax
:ffffffff80435831: jmp ffffffff80435835
<skb_gro_header+0x94>
:ffffffff80435833: xor %eax,%eax
45844 0.4400 :ffffffff80435835: pop %r10
2 1.9e-05 :ffffffff80435837: pop %rbx
12844 0.1233 :ffffffff80435838: pop %rbp
13144 0.1262 :ffffffff80435839: retq
Thanks for your help,
Drew
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