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s390-tools: add hsavmcore utility

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hsavmcore is designed to make the dump process with kdump more efficient.
With hsavmcore, the HSA memory that contains a part of the production
kernel's memory can be released early in the process. Depending on the size
of the production kernel's memory, writing the dump to persistent storage
can be time consuming and prevent the HSA memory from being reused
by other LPARs.

Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Acked-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Alexander Egorenkov
2021-04-08 13:06:33 +02:00
committed by Jan Höppner
parent ce8383e5ac
commit 8c9cc6e12a
24 changed files with 2221 additions and 2 deletions
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README.md
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@@ -252,6 +252,14 @@ Package contents
* hsci:
Manage HiperSockets Converged Interfaces (HSCI).
* hsavmcore:
hsavmcore is designed to make the dump process with kdump more efficient.
With hsavmcore, the HSA memory that contains a part of the production
kernel's memory can be released early in the process. Depending on the size
of the production kernel's memory, writing the dump to persistent storage
can be time consuming and prevent the HSA memory from being reused
by other LPARs.
For more information refer to the following publications:
* "Device Drivers, Features, and Commands" chapter "Useful Linux commands"
@@ -270,7 +278,8 @@ build options:
| __LIBRARY__ | __BUILD OPTION__ | __TOOLS__ |
|----------------|:------------------:|:-------------------------------------:|
| fuse | `HAVE_FUSE` | cmsfs-fuse, zdsfs, hmcdrvfs, zgetdump |
| fuse | `HAVE_FUSE` | cmsfs-fuse, zdsfs, hmcdrvfs, zgetdump,|
| | | hsavmcore |
| zlib | `HAVE_ZLIB` | zgetdump, dump2tar |
| ncurses | `HAVE_NCURSES` | hyptop |
| pfm | `HAVE_PFM` | cpacfstats |
@@ -281,6 +290,7 @@ build options:
| json-c | `HAVE_JSONC` | zkey-cryptsetup, libekmfweb |
| glib2 | `HAVE_GLIB2` | genprotimg |
| libcurl | `HAVE_LIBCURL` | genprotimg, libekmfweb |
| systemd | `HAVE_SYSTEMD` | hsavmcore |
This table lists additional build or install options:
@@ -427,3 +437,10 @@ the different tools are provided:
(libcurl-devel.rpm).
Tip: you may skip the libekmfweb build by adding `HAVE_OPENSSL=0`,
`HAVE_JSONC=0`, or `HAVE_LIBCURL=0` to the make invocation.
* hsavmcore:
For building the hsavmcore tool you need fuse version 2.6 and optionally
systemd which is enabled by default, to disable systemd support,
add `HAVE_SYSTEMD=0` to the make invocation.
Tip: you may skip the hsavmcore build by adding `HAVE_FUSE=0`
to the make invocation.