How to check whether physical page is in-use?
Clash Royale CLAN TAG#URR8PPP
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I am implementing kernel thread which scans whole physical pages in memory and inspect physical page frame numbers of in-used pages.
At first, I thought I can check whether specific page is used by PG_lru flag but the scan result came out strangely.
Is there other way to inspect page is in-use or free?
Should I have to check _mapcount field in struct page?
Please help me...
Thank you so much.
linux kernel linux-kernel memory-management
edited Mar 15 at 6:47
Debian_yadav
8342522
asked Mar 15 at 5:38
JuHyung Son
707
add a comment |Â
up vote
2
down vote
favorite
I am implementing kernel thread which scans whole physical pages in memory and inspect physical page frame numbers of in-used pages.
At first, I thought I can check whether specific page is used by PG_lru flag but the scan result came out strangely.
Is there other way to inspect page is in-use or free?
Should I have to check _mapcount field in struct page?
Please help me...
Thank you so much.
linux kernel linux-kernel memory-management
edited Mar 15 at 6:47
Debian_yadav
8342522
asked Mar 15 at 5:38
JuHyung Son
707
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I am implementing kernel thread which scans whole physical pages in memory and inspect physical page frame numbers of in-used pages.
At first, I thought I can check whether specific page is used by PG_lru flag but the scan result came out strangely.
Is there other way to inspect page is in-use or free?
Should I have to check _mapcount field in struct page?
Please help me...
Thank you so much.
linux kernel linux-kernel memory-management
edited Mar 15 at 6:47
Debian_yadav
8342522
asked Mar 15 at 5:38
JuHyung Son
707
I am implementing kernel thread which scans whole physical pages in memory and inspect physical page frame numbers of in-used pages.
At first, I thought I can check whether specific page is used by PG_lru flag but the scan result came out strangely.
Is there other way to inspect page is in-use or free?
Should I have to check _mapcount field in struct page?
Please help me...
Thank you so much.
linux kernel linux-kernel memory-management
edited Mar 15 at 6:47
Debian_yadav
8342522
asked Mar 15 at 5:38
JuHyung Son
707
edited Mar 15 at 6:47
Debian_yadav
8342522
edited Mar 15 at 6:47
Debian_yadav
8342522
edited Mar 15 at 6:47
Debian_yadav
8342522
8342522
asked Mar 15 at 5:38
JuHyung Son
707
asked Mar 15 at 5:38
JuHyung Son
707
asked Mar 15 at 5:38
JuHyung Son
707
707
add a comment |Â
add a comment |Â
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