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author | Robert Morris <[email protected]> | 2020-10-20 06:55:51 -0400 |
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committer | Robert Morris <[email protected]> | 2020-10-20 06:55:51 -0400 |
commit | 286b2f3c3306a621c415e8c7ce67bc2a6501998a (patch) | |
tree | 82d80466eebccd0b9e761a28e3bcf4394c60116e | |
parent | 806580d6423274e7b38329362f64a549e04ddbab (diff) | |
download | xv6-labs-286b2f3c3306a621c415e8c7ce67bc2a6501998a.tar.gz xv6-labs-286b2f3c3306a621c415e8c7ce67bc2a6501998a.tar.bz2 xv6-labs-286b2f3c3306a621c415e8c7ce67bc2a6501998a.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; } |