From patchwork Thu Jun 6 12:18:39 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kuoppala X-Patchwork-Id: 2680131 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork1.kernel.org (Postfix) with ESMTP id 5CB3A3FD4E for ; Thu, 6 Jun 2013 12:18:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 196D2E6688 for ; Thu, 6 Jun 2013 05:18:51 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id A7561E5C12 for ; Thu, 6 Jun 2013 05:18:41 -0700 (PDT) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 06 Jun 2013 05:18:41 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,814,1363158000"; d="scan'208";a="349187187" Received: from rosetta.fi.intel.com (HELO rosetta) ([10.237.72.67]) by orsmga002.jf.intel.com with ESMTP; 06 Jun 2013 05:18:40 -0700 Received: by rosetta (Postfix, from userid 1000) id EC2208000C; Thu, 6 Jun 2013 15:18:43 +0300 (EEST) From: Mika Kuoppala To: intel-gfx@lists.freedesktop.org Date: Thu, 6 Jun 2013 15:18:39 +0300 Message-Id: <1370521122-20268-1-git-send-email-mika.kuoppala@intel.com> X-Mailer: git-send-email 1.7.9.5 Subject: [Intel-gfx] [PATCH 1/4] drm/i915: export error state to string conversion X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+patchwork-intel-gfx=patchwork.kernel.org@lists.freedesktop.org In preparation for accessing error state from sysfs, export error state to string conversion function. Also tuck buffer error handling inside the function. Signed-off-by: Mika Kuoppala --- drivers/gpu/drm/i915/i915_debugfs.c | 24 ++++++++---------------- drivers/gpu/drm/i915/i915_drv.h | 7 +++++++ 2 files changed, 15 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 0e7e3c0..77bfd51 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -739,15 +739,8 @@ static void i915_ring_error_state(struct drm_i915_error_state_buf *m, err_printf(m, " ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]); } -struct i915_error_state_file_priv { - struct drm_device *dev; - struct drm_i915_error_state *error; -}; - - -static int i915_error_state(struct i915_error_state_file_priv *error_priv, - struct drm_i915_error_state_buf *m) - +int i915_error_state_to_str(struct drm_i915_error_state_buf *m, + const struct i915_error_state_file_priv *error_priv) { struct drm_device *dev = error_priv->dev; drm_i915_private_t *dev_priv = dev->dev_private; @@ -757,7 +750,7 @@ static int i915_error_state(struct i915_error_state_file_priv *error_priv, if (!error) { err_printf(m, "no error state collected\n"); - return 0; + goto out; } err_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec, @@ -867,6 +860,10 @@ static int i915_error_state(struct i915_error_state_file_priv *error_priv, if (error->display) intel_display_print_error_state(m, dev, error->display); +out: + if (m->bytes == 0 && m->err) + return m->err; + return 0; } @@ -960,15 +957,10 @@ static ssize_t i915_error_state_read(struct file *file, char __user *userbuf, error_str.start = *pos; - ret = i915_error_state(error_priv, &error_str); + ret = i915_error_state_to_str(&error_str, error_priv); if (ret) goto out; - if (error_str.bytes == 0 && error_str.err) { - ret = error_str.err; - goto out; - } - ret_count = simple_read_from_buffer(userbuf, count, &tmp_pos, error_str.buf, error_str.bytes); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 215aa63..538b36b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -857,6 +857,11 @@ struct drm_i915_error_state_buf { loff_t pos; }; +struct i915_error_state_file_priv { + struct drm_device *dev; + struct drm_i915_error_state *error; +}; + struct i915_gpu_error { /* For hangcheck timer */ #define DRM_I915_HANGCHECK_PERIOD 1500 /* in ms */ @@ -1850,6 +1855,8 @@ int i915_debugfs_init(struct drm_minor *minor); void i915_debugfs_cleanup(struct drm_minor *minor); __printf(2, 3) void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...); +int i915_error_state_to_str(struct drm_i915_error_state_buf *estr, + const struct i915_error_state_file_priv *error); /* i915_suspend.c */ extern int i915_save_state(struct drm_device *dev);