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Kernel: Disable big process lock for sys$dbgputch

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This syscall doesn't touch any intra-process shared resources and
already holds the global logging lock so there's no reason to hold
the big lock.
This commit is contained in:
Idan Horowitz 2021-08-06 14:39:16 +03:00 • committed by Andreas Kling
parent 72331168be
commit b1f4f6ee15
2 changed files with 2 additions and 2 deletions
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2
Kernel/API/Syscall.h
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@ -145,7 +145,7 @@ enum class NeedsBigProcessLock {
S(mount, NeedsBigProcessLock::Yes) \ S(mount, NeedsBigProcessLock::Yes) \
S(umount, NeedsBigProcessLock::Yes) \ S(umount, NeedsBigProcessLock::Yes) \
S(dump_backtrace, NeedsBigProcessLock::No) \ S(dump_backtrace, NeedsBigProcessLock::No) \
S(dbgputch, NeedsBigProcessLock::Yes) \ S(dbgputch, NeedsBigProcessLock::No) \
S(dbgputstr, NeedsBigProcessLock::No) \ S(dbgputstr, NeedsBigProcessLock::No) \
S(create_inode_watcher, NeedsBigProcessLock::Yes) \ S(create_inode_watcher, NeedsBigProcessLock::Yes) \
S(inode_watcher_add_watch, NeedsBigProcessLock::Yes) \ S(inode_watcher_add_watch, NeedsBigProcessLock::Yes) \

2
Kernel/Syscalls/debug.cpp
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@ -20,7 +20,7 @@ KResultOr<FlatPtr> Process::sys$dump_backtrace()
KResultOr<FlatPtr> Process::sys$dbgputch(u8 ch) KResultOr<FlatPtr> Process::sys$dbgputch(u8 ch)
{ {
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this); VERIFY_NO_PROCESS_BIG_LOCK(this);
dbgputch(ch); dbgputch(ch);
return 0; return 0;
} }