diff options
Diffstat (limited to 'drivers/gpu/arm/midgard/mali_kbase_jd_debugfs.c')
| -rwxr-xr-x | drivers/gpu/arm/midgard/mali_kbase_jd_debugfs.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/drivers/gpu/arm/midgard/mali_kbase_jd_debugfs.c b/drivers/gpu/arm/midgard/mali_kbase_jd_debugfs.c new file mode 100755 index 000000000000..f78910668216 --- /dev/null +++ b/drivers/gpu/arm/midgard/mali_kbase_jd_debugfs.c @@ -0,0 +1,180 @@ +/* + * + * (C) COPYRIGHT ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms + * of such GNU licence. + * + * A copy of the licence is included with the program, and can also be obtained + * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + + + +#include <linux/seq_file.h> + +#include <mali_kbase_jd_debugfs.h> + +#ifdef CONFIG_DEBUG_FS + +/** + * @brief Show callback for the @c JD atoms debugfs file. + * + * This function is called to get the contents of the @c JD atoms debugfs file. + * This is a report of all atoms managed by kbase_jd_context::atoms . + * + * @param sfile The debugfs entry + * @param data Data associated with the entry + * + * @return 0 if successfully prints data in debugfs entry file, failure + * otherwise + */ +static int kbasep_jd_debugfs_atoms_show(struct seq_file *sfile, void *data) +{ + struct kbase_context *kctx = sfile->private; + struct kbase_jd_atom *atoms; + unsigned long irq_flags; + int i; + + KBASE_DEBUG_ASSERT(kctx != NULL); + + /* Print table heading */ + seq_puts(sfile, "atom id,core reqs,status,coreref status,predeps,start time,time on gpu\n"); + + atoms = kctx->jctx.atoms; + /* General atom states */ + mutex_lock(&kctx->jctx.lock); + /* JS-related states */ + spin_lock_irqsave(&kctx->kbdev->js_data.runpool_irq.lock, irq_flags); + for (i = 0; i != BASE_JD_ATOM_COUNT; ++i) { + struct kbase_jd_atom *atom = &atoms[i]; + s64 start_timestamp = 0; + + if (atom->status == KBASE_JD_ATOM_STATE_UNUSED) + continue; + + /* start_timestamp is cleared as soon as the atom leaves UNUSED state + * and set before a job is submitted to the h/w, a non-zero value means + * it is valid */ + if (ktime_to_ns(atom->start_timestamp)) + start_timestamp = ktime_to_ns( + ktime_sub(ktime_get(), atom->start_timestamp)); + + seq_printf(sfile, + "%i,%u,%u,%u,%lu %lu,%lli,%llu\n", + i, atom->core_req, atom->status, atom->coreref_state, + atom->dep[0].atom ? atom->dep[0].atom - atoms : 0, + atom->dep[1].atom ? atom->dep[1].atom - atoms : 0, + (signed long long)start_timestamp, + (unsigned long long)(atom->time_spent_us ? + atom->time_spent_us * 1000 : start_timestamp) + ); + } + spin_unlock_irqrestore(&kctx->kbdev->js_data.runpool_irq.lock, irq_flags); + mutex_unlock(&kctx->jctx.lock); + + return 0; +} + + +/** + * @brief File operations related to debugfs entry for atoms + */ +static int kbasep_jd_debugfs_atoms_open(struct inode *in, struct file *file) +{ + return single_open(file, kbasep_jd_debugfs_atoms_show, in->i_private); +} + +static const struct file_operations kbasep_jd_debugfs_atoms_fops = { + .open = kbasep_jd_debugfs_atoms_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + + +int kbasep_jd_debugfs_init(struct kbase_device *kbdev) +{ + kbdev->jd_directory = debugfs_create_dir( + "jd", kbdev->mali_debugfs_directory); + if (IS_ERR(kbdev->jd_directory)) { + dev_err(kbdev->dev, "Couldn't create mali jd debugfs directory\n"); + goto err; + } + + return 0; + +err: + return -1; +} + + +void kbasep_jd_debugfs_term(struct kbase_device *kbdev) +{ + KBASE_DEBUG_ASSERT(kbdev != NULL); + + if (!IS_ERR(kbdev->jd_directory)) + debugfs_remove_recursive(kbdev->jd_directory); +} + + +int kbasep_jd_debugfs_ctx_add(struct kbase_context *kctx) +{ + /* Refer below for format string, %u is 10 chars max */ + char dir_name[10 * 2 + 2]; + + KBASE_DEBUG_ASSERT(kctx != NULL); + + /* Create per-context directory */ + scnprintf(dir_name, sizeof(dir_name), "%u_%u", kctx->pid, kctx->id); + kctx->jd_ctx_dir = debugfs_create_dir(dir_name, kctx->kbdev->jd_directory); + if (IS_ERR(kctx->jd_ctx_dir)) + goto err; + + /* Expose all atoms */ + if (IS_ERR(debugfs_create_file("atoms", S_IRUGO, + kctx->jd_ctx_dir, kctx, &kbasep_jd_debugfs_atoms_fops))) + goto err_jd_ctx_dir; + + return 0; + +err_jd_ctx_dir: + debugfs_remove_recursive(kctx->jd_ctx_dir); +err: + return -1; +} + + +void kbasep_jd_debugfs_ctx_remove(struct kbase_context *kctx) +{ + KBASE_DEBUG_ASSERT(kctx != NULL); + + if (!IS_ERR(kctx->jd_ctx_dir)) + debugfs_remove_recursive(kctx->jd_ctx_dir); +} + +#else /* CONFIG_DEBUG_FS */ + +/** + * @brief Stub functions for when debugfs is disabled + */ +int kbasep_jd_debugfs_init(struct kbase_device *kbdev) +{ + return 0; +} +void kbasep_jd_debugfs_term(struct kbase_device *kbdev) +{ +} +int kbasep_jd_debugfs_ctx_add(struct kbase_context *ctx) +{ + return 0; +} +void kbasep_jd_debugfs_ctx_remove(struct kbase_context *ctx) +{ +} + +#endif /* CONFIG_DEBUG_FS */ |