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authorAnton Vorontsov <anton.vorontsov@linaro.org>2012-07-20 17:28:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-21 10:34:00 -0700
commitc064da47144b11be4697a4611f640086a663016a (patch)
tree838c1b69e0485ba4b2bda8668dc0c4b3117cb5c8 /kernel
parent533827c921c34310f63e859e1d6d0feec439657d (diff)
downloadlinux-linaro-stable-c064da47144b11be4697a4611f640086a663016a.tar.gz
kdb: Switch to nolock variants of kmsg_dump functions
The locked variants are prone to deadlocks (suppose we got to the debugger w/ the logbuf lock held), so let's switch to nolock variants. Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/debug/kdb/kdb_main.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index df17c935d3c6..1f91413edb87 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -2072,8 +2072,8 @@ static int kdb_dmesg(int argc, const char **argv)
kdb_set(2, setargs);
}
- kmsg_dump_rewind(&dumper);
- while (kmsg_dump_get_line(&dumper, 1, NULL, 0, NULL))
+ kmsg_dump_rewind_nolock(&dumper);
+ while (kmsg_dump_get_line_nolock(&dumper, 1, NULL, 0, NULL))
n++;
if (lines < 0) {
@@ -2105,8 +2105,8 @@ static int kdb_dmesg(int argc, const char **argv)
if (skip >= n || skip < 0)
return 0;
- kmsg_dump_rewind(&dumper);
- while (kmsg_dump_get_line(&dumper, 1, buf, sizeof(buf), &len)) {
+ kmsg_dump_rewind_nolock(&dumper);
+ while (kmsg_dump_get_line_nolock(&dumper, 1, buf, sizeof(buf), &len)) {
if (skip) {
skip--;
continue;