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oprofile, x86: Add comments to IBS LVT offset initialization

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Adding a comment in the code as IBS LVT setup is not obvious at all ...

Signed-off-by: Robert Richter <robert.richter@amd.com>
This commit is contained in:
Robert Richter 2011-05-30 16:31:11 +02:00
commit cbf74cea07
2 changed files with 11 additions and 5 deletions
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arch/x86/kernel/apic/apic.c
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@ -390,7 +390,8 @@ static unsigned int reserve_eilvt_offset(int offset, unsigned int new)
/*
* If mask=1, the LVT entry does not generate interrupts while mask=0
* enables the vector. See also the BKDGs.
* enables the vector. See also the BKDGs. Must be called with
* preemption disabled.
*/
int setup_APIC_eilvt(u8 offset, u8 vector, u8 msg_type, u8 mask)