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Kernel: Allow recursion when writing to the debug log

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This allows printing in the case e.g. a page fault happens
during a log statement
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Tom 2020-07-02 08:34:14 -06:00 committed by Andreas Kling
parent 3cc0e86cd8
commit a308b176ce
Notes: sideshowbarker 2024-07-19 05:12:46 +09:00 
Author: https://github.com/tomuta
Commit: https://github.com/SerenityOS/serenity/commit/a308b176cef
Pull-request: https://github.com/SerenityOS/serenity/pull/2683
Reviewed-by: https://github.com/awesomekling ✅
1 changed files with 3 additions and 1 deletions
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4
Kernel/kprintf.cpp
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@ -35,7 +35,9 @@
#include <LibC/stdarg.h>
static bool serial_debug;
static SpinLock s_log_lock;
// A recursive spinlock allows us to keep writing in the case where a
// page fault happens in the middle of a dbg(), klog(), etc
static RecursiveSpinLock s_log_lock;
void set_serial_debug(bool on_or_off)
{