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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
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(ptrace, NeedsBigProcessLock::Yes) \
S(sendfd, NeedsBigProcessLock::Yes) \ S(sendfd, NeedsBigProcessLock::Yes) \
S(recvfd, NeedsBigProcessLock::Yes) \ S(recvfd, NeedsBigProcessLock::Yes) \
S(sysconf, NeedsBigProcessLock::Yes) \ S(sysconf, NeedsBigProcessLock::No) \
S(set_process_name, NeedsBigProcessLock::Yes) \ S(set_process_name, NeedsBigProcessLock::Yes) \
S(disown, NeedsBigProcessLock::Yes) \ S(disown, NeedsBigProcessLock::Yes) \
S(adjtime, NeedsBigProcessLock::Yes) \ S(adjtime, NeedsBigProcessLock::Yes) \

2
Kernel/Syscalls/sysconf.cpp
View file

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