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Kernel: Disable big process lock for sys$sysconf

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This syscall only reads constant kernel globals, and as such does not
need to hold the big lock.
This commit is contained in:
Idan Horowitz 2021-08-06 15:27:03 +03:00 committed by Andreas Kling
parent efeb01e35f
commit ad419a669d
Notes: sideshowbarker 2024-07-18 07:23:22 +09:00 
Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/ad419a669d1
Pull-request: https://github.com/SerenityOS/serenity/pull/9236
Reviewed-by: https://github.com/tomuta ✅
2 changed files with 2 additions and 2 deletions
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2
Kernel/API/Syscall.h
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@ -181,7 +181,7 @@ enum class NeedsBigProcessLock {
S(ptrace, NeedsBigProcessLock::Yes) \
S(sendfd, NeedsBigProcessLock::Yes) \
S(recvfd, NeedsBigProcessLock::Yes) \
S(sysconf, NeedsBigProcessLock::Yes) \
S(sysconf, NeedsBigProcessLock::No) \
S(set_process_name, NeedsBigProcessLock::Yes) \
S(disown, NeedsBigProcessLock::Yes) \
S(adjtime, NeedsBigProcessLock::Yes) \

2
Kernel/Syscalls/sysconf.cpp
View file

@ -11,7 +11,7 @@ namespace Kernel {
KResultOr<FlatPtr> Process::sys$sysconf(int name)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
VERIFY_NO_PROCESS_BIG_LOCK(this)
switch (name) {
case _SC_MONOTONIC_CLOCK:
return 1;