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Changeset 712c4ba in mainline for kernel/generic/src/printf/vprintf.c


Ignore:
Timestamp:
2011-05-20T16:09:24Z (11 years ago)
Author:
Martin Decky <martin@…>
Branches:
lfn, master
Children:
b6f3e7e
Parents:
326bf65
Message:

avoid spinlocks to be taken in the direct code path to physically outputing kconsole characters to the framebuffer (this fixes ticket #243)
the spinlock in printf() (kernel) was sacrificed, this might lead potentially to scrambled kconsole output
the hack of ignoring spinlocks whose names start with "*" in the livelock detector can be removed

File:
1 edited

Legend:

Unmodified
Added
Removed
  • kernel/generic/src/printf/vprintf.c

    r326bf65 r712c4ba  
    4141#include <typedefs.h>
    4242#include <str.h>
    43 
    44 IRQ_SPINLOCK_STATIC_INITIALIZE_NAME(printf_lock, "*printf_lock");
    4543
    4644static int vprintf_str_write(const char *str, size_t size, void *data)
     
    9391        };
    9492       
    95         irq_spinlock_lock(&printf_lock, true);
    96         int ret = printf_core(fmt, &ps, ap);
    97         irq_spinlock_unlock(&printf_lock, true);
    98        
    99         return ret;
     93        return printf_core(fmt, &ps, ap);
    10094}
    10195
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