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| author | Josh Hunt <johunt@akamai.com> | 2014-08-08 23:22:31 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-09 00:57:24 +0200 |
| commit | 69361eef9056b0babb507798c2135ad1572f0ef7 (patch) | |
| tree | 59a63cc2f670926a7b9394533bbc9d3e379fc258 /kernel | |
| parent | fs/bfs: use bfs prefix for dump_imap (diff) | |
| download | linux-69361eef9056b0babb507798c2135ad1572f0ef7.tar.xz linux-69361eef9056b0babb507798c2135ad1572f0ef7.zip | |
panic: add TAINT_SOFTLOCKUP
This taint flag will be set if the system has ever entered a softlockup
state. Similar to TAINT_WARN it is useful to know whether or not the
system has been in a softlockup state when debugging.
[akpm@linux-foundation.org: apply the taint before calling panic()]
Signed-off-by: Josh Hunt <johunt@akamai.com>
Cc: Jason Baron <jbaron@akamai.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/panic.c | 1 | ||||
| -rw-r--r-- | kernel/watchdog.c | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c index 62e16cef9cc2..d09dc5c32c67 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -224,6 +224,7 @@ static const struct tnt tnts[] = { { TAINT_FIRMWARE_WORKAROUND, 'I', ' ' }, { TAINT_OOT_MODULE, 'O', ' ' }, { TAINT_UNSIGNED_MODULE, 'E', ' ' }, + { TAINT_SOFTLOCKUP, 'L', ' ' }, }; /** diff --git a/kernel/watchdog.c b/kernel/watchdog.c index 51b29e9d2ba6..a8d6914030fe 100644 --- a/kernel/watchdog.c +++ b/kernel/watchdog.c @@ -368,6 +368,7 @@ static enum hrtimer_restart watchdog_timer_fn(struct hrtimer *hrtimer) smp_mb__after_atomic(); } + add_taint(TAINT_SOFTLOCKUP, LOCKDEP_STILL_OK); if (softlockup_panic) panic("softlockup: hung tasks"); __this_cpu_write(soft_watchdog_warn, true); |