evie/android_kernel_oneplus_msm8998
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Merge "mmc: core: Add sysfs entry to print ring buffer"

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Linux Build Service Account 2017-01-20 13:48:26 -08:00 • committed by Gerrit - the friendly Code Review server
commit b24a83ae61
1 changed files with 25 additions and 0 deletions
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25
drivers/mmc/core/debugfs.c
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@ -32,6 +32,26 @@ module_param(fail_request, charp, 0);
#endif /* CONFIG_FAIL_MMC_REQUEST */
/* The debugfs functions are optimized away when CONFIG_DEBUG_FS isn't set. */
static int mmc_ring_buffer_show(struct seq_file *s, void *data)
{
struct mmc_host *mmc = s->private;
mmc_dump_trace_buffer(mmc, s);
return 0;
}
static int mmc_ring_buffer_open(struct inode *inode, struct file *file)
{
return single_open(file, mmc_ring_buffer_show, inode->i_private);
}
static const struct file_operations mmc_ring_buffer_fops = {
.open = mmc_ring_buffer_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int mmc_ios_show(struct seq_file *s, void *data)
{
static const char *vdd_str[] = {
@ -368,6 +388,11 @@ void mmc_add_host_debugfs(struct mmc_host *host)
&host->cmdq_thist_enabled))
goto err_node;
#ifdef CONFIG_MMC_RING_BUFFER
if (!debugfs_create_file("ring_buffer", S_IRUSR,
root, host, &mmc_ring_buffer_fops))
goto err_node;
#endif
#ifdef CONFIG_MMC_CLKGATE
if (!debugfs_create_u32("clk_delay", (S_IRUSR | S_IWUSR),
root, &host->clk_delay))