From 2fcf06805cb063085127d7e3f4ed7842682b3fff Mon Sep 17 00:00:00 2001 From: Sagar Arun Kamble Date: Wed, 24 Jan 2018 21:17:00 +0530 Subject: [PATCH] drm/i915/guc: Fix comments style in intel_guc_log.c Use consistent multi-line comment style as per guideline. v2: Reverted comments prefix update to kernel-doc comment. (Chris) Suggested-by: Michal Wajdeczko Signed-off-by: Sagar Arun Kamble Cc: Michal Wajdeczko Cc: Chris Wilson Reviewed-by: Chris Wilson Signed-off-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/msgid/1516808821-3638-5-git-send-email-sagar.a.kamble@intel.com --- drivers/gpu/drm/i915/intel_guc_log.c | 45 ++++++++++++++++++++++++------------ 1 file changed, 30 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_guc_log.c b/drivers/gpu/drm/i915/intel_guc_log.c index cb10f7aeb042..86a33214cbfc 100644 --- a/drivers/gpu/drm/i915/intel_guc_log.c +++ b/drivers/gpu/drm/i915/intel_guc_log.c @@ -81,7 +81,8 @@ static int subbuf_start_callback(struct rchan_buf *buf, void *prev_subbuf, size_t prev_padding) { - /* Use no-overwrite mode by default, where relay will stop accepting + /* + * Use no-overwrite mode by default, where relay will stop accepting * new data if there are no empty sub buffers left. * There is no strict synchronization enforced by relay between Consumer * and Producer. In overwrite mode, there is a possibility of getting @@ -107,7 +108,8 @@ static struct dentry *create_buf_file_callback(const char *filename, { struct dentry *buf_file; - /* This to enable the use of a single buffer for the relay channel and + /* + * This to enable the use of a single buffer for the relay channel and * correspondingly have a single file exposed to User, through which * it can collect the logs in order without any post-processing. * Need to set 'is_global' even if parent is NULL for early logging. @@ -117,7 +119,8 @@ static struct dentry *create_buf_file_callback(const char *filename, if (!parent) return NULL; - /* Not using the channel filename passed as an argument, since for each + /* + * Not using the channel filename passed as an argument, since for each * channel relay appends the corresponding CPU number to the filename * passed in relay_open(). This should be fine as relay just needs a * dentry of the file associated with the channel buffer and that file's @@ -158,7 +161,8 @@ static int guc_log_relay_file_create(struct intel_guc *guc) /* For now create the log file in /sys/kernel/debug/dri/0 dir */ log_dir = dev_priv->drm.primary->debugfs_root; - /* If /sys/kernel/debug/dri/0 location do not exist, then debugfs is + /* + * If /sys/kernel/debug/dri/0 location do not exist, then debugfs is * not mounted and so can't create the relay file. * The relay API seems to fit well with debugfs only, for availing relay * there are 3 requirements which can be met for debugfs file only in a @@ -195,7 +199,8 @@ static bool guc_log_has_relay(struct intel_guc *guc) static void guc_move_to_next_buf(struct intel_guc *guc) { - /* Make sure the updates made in the sub buffer are visible when + /* + * Make sure the updates made in the sub buffer are visible when * Consumer sees the following update to offset inside the sub buffer. */ smp_wmb(); @@ -215,7 +220,8 @@ static void *guc_get_write_buffer(struct intel_guc *guc) if (!guc_log_has_relay(guc)) return NULL; - /* Just get the base address of a new sub buffer and copy data into it + /* + * Just get the base address of a new sub buffer and copy data into it * ourselves. NULL will be returned in no-overwrite mode, if all sub * buffers are full. Could have used the relay_write() to indirectly * copy the data, but that would have been bit convoluted, as we need to @@ -286,7 +292,8 @@ static void guc_read_update_log_buffer(struct intel_guc *guc) log_buf_snapshot_state = dst_data = guc_get_write_buffer(guc); if (unlikely(!log_buf_snapshot_state)) { - /* Used rate limited to avoid deluge of messages, logs might be + /* + * Used rate limited to avoid deluge of messages, logs might be * getting consumed by User at a slow rate. */ DRM_ERROR_RATELIMITED("no sub-buffer to capture logs\n"); @@ -301,7 +308,8 @@ static void guc_read_update_log_buffer(struct intel_guc *guc) dst_data += PAGE_SIZE; for (type = GUC_ISR_LOG_BUFFER; type < GUC_MAX_LOG_BUFFER; type++) { - /* Make a copy of the state structure, inside GuC log buffer + /* + * Make a copy of the state structure, inside GuC log buffer * (which is uncached mapped), on the stack to avoid reading * from it multiple times. */ @@ -325,7 +333,8 @@ static void guc_read_update_log_buffer(struct intel_guc *guc) memcpy(log_buf_snapshot_state, &log_buf_state_local, sizeof(struct guc_log_buffer_state)); - /* The write pointer could have been updated by GuC firmware, + /* + * The write pointer could have been updated by GuC firmware, * after sending the flush interrupt to Host, for consistency * set write pointer value to same value of sampled_write_ptr * in the snapshot buffer. @@ -392,7 +401,8 @@ static int guc_log_runtime_create(struct intel_guc *guc) if (ret) return ret; - /* Create a WC (Uncached for read) vmalloc mapping of log + /* + * Create a WC (Uncached for read) vmalloc mapping of log * buffer pages, so that we can directly get the data * (up-to-date) from memory. */ @@ -443,14 +453,16 @@ int intel_guc_log_relay_create(struct intel_guc *guc) /* Keep the size of sub buffers same as shared log buffer */ subbuf_size = GUC_LOG_SIZE; - /* Store up to 8 snapshots, which is large enough to buffer sufficient + /* + * Store up to 8 snapshots, which is large enough to buffer sufficient * boot time logs and provides enough leeway to User, in terms of * latency, for consuming the logs from relay. Also doesn't take * up too much memory. */ n_subbufs = 8; - /* Create a relay channel, so that we have buffers for storing + /* + * Create a relay channel, so that we have buffers for storing * the GuC firmware logs, the channel will be linked with a file * later on when debugfs is registered. */ @@ -544,7 +556,8 @@ static void guc_log_capture_logs(struct intel_guc *guc) guc_read_update_log_buffer(guc); - /* Generally device is expected to be active only at this + /* + * Generally device is expected to be active only at this * time, so get/put should be really quick. */ intel_runtime_pm_get(dev_priv); @@ -566,7 +579,8 @@ static void guc_flush_logs(struct intel_guc *guc) intel_runtime_pm_put(dev_priv); mutex_unlock(&dev_priv->drm.struct_mutex); - /* Before initiating the forceful flush, wait for any pending/ongoing + /* + * Before initiating the forceful flush, wait for any pending/ongoing * flush to complete otherwise forceful flush may not actually happen. */ flush_work(&guc->log.runtime.flush_work); @@ -589,7 +603,8 @@ int intel_guc_log_create(struct intel_guc *guc) GEM_BUG_ON(guc->log.vma); - /* We require SSE 4.1 for fast reads from the GuC log buffer and + /* + * We require SSE 4.1 for fast reads from the GuC log buffer and * it should be present on the chipsets supporting GuC based * submisssions. */ -- 2.11.0