After rebuilt the example from the C6run lib at c6run_0_95_02_02/examples/c6runlib/emqbit, the ARM version is running without problems as following output.
root@omap3evm:/opt/gfxsdkdemos/ogles2/cruntest# ./cfft_arm
N=16,nTimes=100: 0.001373 s
N=32,nTimes=100: 0.001801 s
N=64,nTimes=100: 0.004364 s
N=128,nTimes=100: 0.010071 s
N=256,nTimes=100: 0.02301 s
N=512,nTimes=100: 0.053223 s
N=1024,nTimes=100: 0.114685 s
N=2048,nTimes=100: 0.252563 s
N=4096,nTimes=100: 0.551972 s
N=8192,nTimes=100: 1.19537 s
N=16384,nTimes=100: 2.57184 s
When I tried to run the dsp version, I have the following crashing informaiton and it is related to v7_dma_clean_range. Where should I start to fix this problem based on the crash information? Thanks.
root@omap3evm:/opt/gfxsdkdemos/ogles2/cruntest# ./cfft_dsp
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = cfb18000
[00000000] *pgd=8ca6b031, *pte=00000000, *ppte=00000000
Internal error: Oops: 817 [#1]
last sysfs file: /sys/devices/virtual/vtconsole/vtcon1/bind
Modules linked in: sdmak lpm_omap3530 dsplinkk cmemk omaplfb pvrsrvkm lowspi tiwlan_drv bmtrace sdio
CPU: 0 Not tainted (2.6.32 #1)
PC is at v7_dma_clean_range+0x18/0x30
LR is at ioctl+0x908/0xb8c [cmemk]
pc : [<c008462c>] lr : [<bf15b4c8>] psr: 60000013
sp : cfad9ec8 ip : 00000018 fp : be825c2c
r10: 00000000 r9 : 0001fe07 r8 : be825bd0
r7 : cf8fe440 r6 : 0001fe07 r5 : be825bd0 r4 : 00000000
r3 : 0000003f r2 : 00000040 r1 : 00000000 r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d Table: 8fb18019 DAC: 00000015
Process cfft_dsp (pid: 1627, stack limit = 0xcfad82e8)
Stack: (0xcfad9ec8 to 0xcfada000)
9ec0: cf8b67c0 cf8fe440 400e072c cfbd8234 00000200 00000000
9ee0: 00000000 00008000 ffffffff 00000000 be825c04 cf8fe440 be825bd0 0001fe07
9f00: cf8fe440 be825bd0 cfad8000 00000000 be825c2c c0101c00 00000003 cf8fe440
9f20: 00000003 c0102334 009959d0 00000000 c04a9310 00000000 00000000 00000000
9f40: 2873fd5b 0000009d 28733a0b 0000009d c00bbda8 c04a8e50 00000000 00000000
9f60: 00000000 000000ae 00000003 be825bd0 0001fe07 cf8fe440 c007c068 cfad8000
9f80: 00000000 c01023ac 00000003 00000001 be825bd0 00000000 00000000 45345824
9fa0: 00000036 c007bec0 00000000 00000000 00000003 0001fe07 be825bd0 0005f8b8
9fc0: 00000000 00000000 45345824 00000036 4534581c 00000000 45345828 be825c2c
9fe0: 402350a0 be825bd0 0000b280 401c677c 20000010 00000003 00000000 00000000
[<c008462c>] (v7_dma_clean_range+0x18/0x30) from [<bf15b4c8>] (ioctl+0x908/0xb8c [cmemk])
[<bf15b4c8>] (ioctl+0x908/0xb8c [cmemk]) from [<c0101c00>] (vfs_ioctl+0x2c/0x70)
[<c0101c00>] (vfs_ioctl+0x2c/0x70) from [<c0102334>] (do_vfs_ioctl+0x518/0x55c)
[<c0102334>] (do_vfs_ioctl+0x518/0x55c) from [<c01023ac>] (sys_ioctl+0x34/0x54)
[<c01023ac>] (sys_ioctl+0x34/0x54) from [<c007bec0>] (ret_fast_syscall+0x0/0x2c)
Code: e3a02010 e1a02312 e2423001 e1c00003 (ee070f3a)
---[ end trace 7418b98d925a72fe ]---
