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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-04-09 10:57:55 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-04-09 12:09:29 +0100 |
| commit | 12471ba87a08bd1dd0aac18015d7782e02ea02de (patch) | |
| tree | 06c4e5e6bcd30f17b93b933e8f04580a7dbb57af /drivers/gpu/drm/i915/i915_debugfs.c | |
| parent | c04e0f3b4ea01b3b1d81ccfce0a73bb0b297ba46 (diff) | |
| download | lwn-12471ba87a08bd1dd0aac18015d7782e02ea02de.tar.gz lwn-12471ba87a08bd1dd0aac18015d7782e02ea02de.zip | |
drm/i915: Harden detection of missed interrupts
Only declare a missed interrupt if we find that the GPU is idle with
waiters and a hangcheck interval has passed in which no new user
interrupts have been raised.
v2: Clear the stuck interrupt marker between successful batches
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460195877-20520-3-git-send-email-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 919c05ba9932..9640738aabf2 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -728,10 +728,10 @@ static int i915_gem_request_info(struct seq_file *m, void *data) static void i915_ring_seqno_info(struct seq_file *m, struct intel_engine_cs *engine) { - if (engine->get_seqno) { - seq_printf(m, "Current sequence (%s): %x\n", - engine->name, engine->get_seqno(engine)); - } + seq_printf(m, "Current sequence (%s): %x\n", + engine->name, engine->get_seqno(engine)); + seq_printf(m, "Current user interrupts (%s): %x\n", + engine->name, READ_ONCE(engine->user_interrupts)); } static int i915_gem_seqno_info(struct seq_file *m, void *data) @@ -1367,6 +1367,9 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) engine->hangcheck.seqno, seqno[id], engine->last_submitted_seqno); + seq_printf(m, "\tuser interrupts = %x [current %x]\n", + engine->hangcheck.user_interrupts, + READ_ONCE(engine->user_interrupts)); seq_printf(m, "\tACTHD = 0x%08llx [current 0x%08llx]\n", (long long)engine->hangcheck.acthd, (long long)acthd[id]); |