Date: Wed, 30 Mar 2011 00:58:42 +0000 From: Alexander Best <arundel@freebsd.org> To: freebsd-hackers@freebsd.org Subject: dtrace's hotkernel script reports a memory location (0xffffffff80) instead of a function name Message-ID: <20110330005842.GA58153@freebsd.org>
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hi there, while running the hotkernel dtrace script from DTraceToolkit-0.99 i noticed the following: [...] kernel`sopoll_generic 60 0.1% kernel`bcopy 80 0.2% kernel`uma_zalloc_arg 100 0.2% kernel`selrecord 100 0.2% kernel`__curthread 110 0.2% kernel`syscallenter 120 0.2% kernel`fget_unlocked 130 0.3% kernel`0xffffffff80 140 0.3% kernel`copyin 190 0.4% kernel`copyout 220 0.4% kernel`inl 491 1.0% kernel`atomic_cmpset_long 570 1.1% kernel`write_rflags 652 1.3% kernel`ia32_pause 1211 2.4% kernel`cpu_mwait 1610 3.2% kernel`sched_idletd 1900 3.8% kernel`acpi_cpu_c1 40284 80.3% i talked to a few people on #bsddev, but nobody could tell me what 0xffffffff80 was refering to. kgdb(1) reports "Error accessing memory address 0xffffffff80: Bad address" for that location. any idea? -- a13x
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