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| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-09-04 15:02:44 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-04 15:02:44 -0400 |
| commit | 268364a0f48aee2f851f9d1ef8a6cda0f3039ef1 (patch) | |
| tree | 018d00aa42b74a80baf976258aa9b17abdfb44c6 /Documentation/basic_profiling.txt | |
| parent | d210baf53b699fc61aa891c177b71d7082d3b957 (diff) | |
IO resources: add reserve_region_with_split()
add reserve_region_with_split() to not lose e820 reserved entries if
they overlap with existing IO regions:
with test case by extend 0xe0000000 - 0xeffffff to 0xdd800000 -
we get:
e0000000-efffffff : PCI MMCONFIG 0
e0000000-efffffff : reserved
and in /proc/iomem we get:
found conflict for reserved [dd800000, efffffff], try to reserve with split
__reserve_region_with_split: (PCI Bus #80) [dd000000, ddffffff], res: (reserved) [dd800000, efffffff]
__reserve_region_with_split: (PCI Bus #00) [de000000, dfffffff], res: (reserved) [de000000, efffffff]
initcall pci_subsys_init+0x0/0x121 returned 0 after 381 msecs
in dmesg
various fixes and improvements suggested by Linus.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/basic_profiling.txt')
0 files changed, 0 insertions, 0 deletions