path: root/arch/x86/oprofile/nmi_int.c
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authorNaga Chumbalkar <nagananda.chumbalkar@hp.com>2010-02-23 18:14:58 +0100
committerRobert Richter <robert.richter@amd.com>2010-02-26 15:14:34 +0100
commit8588d1067147e14d1dd521fbadd1d2564f8cc794 (patch)
tree2b2f5bba9c3f8547ac86a1444f8582c3834b4ea8 /arch/x86/oprofile/nmi_int.c
parent98a2e73a0690b3610f049a64154d8145e5771713 (diff)
oprofile/x86: add comment to counter-in-use warning
Currently, oprofile fails silently on platforms where a non-OS entity such as the system firmware "enables" and uses a performance counter. There is a warning in the code for this case. The warning indicates an already running counter. If oprofile doesn't collect data, then try using a different performance counter on your platform to monitor the desired event. Delete the counter from the desired event by editing the /usr/share/oprofile/<cpu_type>/<cpu>/events file. If the event cannot be monitored by any other counter, contact your hardware or BIOS vendor. Cc: Shashi Belur <shashi-kiran.belur@hp.com> Cc: Tony Jones <tonyj@suse.de> Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'arch/x86/oprofile/nmi_int.c')
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