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| author | Robert Morris <rtm@csail.mit.edu> | 2020-10-20 06:55:51 -0400 |
|---|---|---|
| committer | Frans Kaashoek <kaashoek@mit.edu> | 2020-11-05 06:56:51 -0500 |
| commit | 13dccb0380d3c694083095040fadd03bfe4f598c (patch) | |
| tree | e7ad4e929e3f5d5e6e9bc023c8b221f597bd2b90 | |
| parent | d4cecb269f2acc61cc1adc11fec2aa690b9c553b (diff) | |
| download | xv6-labs-13dccb0380d3c694083095040fadd03bfe4f598c.tar.gz xv6-labs-13dccb0380d3c694083095040fadd03bfe4f598c.tar.bz2 xv6-labs-13dccb0380d3c694083095040fadd03bfe4f598c.zip | |
consolewrite does not need cons.lock -- can lead to sleep() with lock held
| -rw-r--r-- | kernel/console.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/kernel/console.c b/kernel/console.c index d606ed2..23a2d35 100644 --- a/kernel/console.c +++ b/kernel/console.c @@ -60,14 +60,12 @@ consolewrite(int user_src, uint64 src, int n) { int i; - acquire(&cons.lock); for(i = 0; i < n; i++){ char c; if(either_copyin(&c, user_src, src+i, 1) == -1) break; uartputc(c); } - release(&cons.lock); return i; } |