From: Siddhesh Poyarekar <siddhesh@sourceware.org>
To: libc-alpha@sourceware.org
Subject: [PATCH] tunables: Disallow negative values for some tunables
Date: Fri, 5 Feb 2021 13:39:29 +0530 [thread overview]
Message-ID: <20210205080929.3316869-1-siddhesh@sourceware.org> (raw)
The glibc.malloc.mmap_max tunable as well as al of the INT_32 tunables
don't have use for negative values, so pin the hardcoded limits in the
non-negative range of INT. There's no real benefit in any of those
use cases for the extended range of unsigned, so I have avoided added
a new type to keep things simple.
---
elf/dl-tunables.list | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/elf/dl-tunables.list b/elf/dl-tunables.list
index 3cf0ad83ec..8ddd4a2314 100644
--- a/elf/dl-tunables.list
+++ b/elf/dl-tunables.list
@@ -64,6 +64,7 @@ glibc {
type: INT_32
env_alias: MALLOC_MMAP_MAX_
security_level: SXID_IGNORE
+ minval: 0
}
arena_max {
type: SIZE_T
@@ -109,22 +110,27 @@ glibc {
skip_lock_busy {
type: INT_32
default: 3
+ minval: 0
}
skip_lock_internal_abort {
type: INT_32
default: 3
+ minval: 0
}
skip_lock_after_retries {
type: INT_32
default: 3
+ minval: 0
}
tries {
type: INT_32
default: 3
+ minval: 0
}
skip_trylock_internal_abort {
type: INT_32
default: 3
+ minval: 0
}
}
--
2.29.2
next reply other threads:[~2021-02-05 8:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-05 8:09 Siddhesh Poyarekar [this message]
2021-02-10 12:57 ` Carlos O'Donell
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