samsung-sm8650/android_kernel_samsung_sm8650-modules
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disp: msm: avoid using spinlock while adding evtlog entry

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Add support to use atomic variable instead of spinlog
for event log while adding enries. This change will
help optimize event log writing time.

Change-Id: I83661b85cd76ca738729ac51aa5afd97d162508d
Signed-off-by: Samantha Tran <samtran@codeaurora.org>
This commit is contained in:
Samantha Tran
2021-07-02 09:48:43 -07:00
parent dec0bb3812
commit ae94f07d6e
3 changed files with 8 additions and 15 deletions
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msm/sde_dbg.c
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@@ -1154,7 +1154,7 @@ static int sde_dbg_debugfs_open(struct inode *inode, struct file *file)
file->private_data = inode->i_private;
mutex_lock(&sde_dbg_base.mutex);
sde_dbg_base.cur_evt_index = 0;
sde_dbg_base.evtlog->first = sde_dbg_base.evtlog->curr + 1;
sde_dbg_base.evtlog->first = (u32)atomic_add_return(0, &sde_dbg_base.evtlog->curr) + 1;
sde_dbg_base.evtlog->last =
sde_dbg_base.evtlog->first + SDE_EVTLOG_ENTRY;
mutex_unlock(&sde_dbg_base.mutex);