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Subject[PATCH] psi: convert to DEFINE_SHOW_ATTRIBUTE
Date
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
---
kernel/sched/psi.c | 39 +++------------------------------------
1 file changed, 3 insertions(+), 36 deletions(-)

diff --git a/kernel/sched/psi.c b/kernel/sched/psi.c
index fe24de3fbc93..8d13210f88f4 100644
--- a/kernel/sched/psi.c
+++ b/kernel/sched/psi.c
@@ -714,52 +714,19 @@ static int psi_io_show(struct seq_file *m, void *v)
{
return psi_show(m, &psi_system, PSI_IO);
}
+DEFINE_SHOW_ATTRIBUTE(psi_io);

static int psi_memory_show(struct seq_file *m, void *v)
{
return psi_show(m, &psi_system, PSI_MEM);
}
+DEFINE_SHOW_ATTRIBUTE(psi_memory);

static int psi_cpu_show(struct seq_file *m, void *v)
{
return psi_show(m, &psi_system, PSI_CPU);
}
-
-static int psi_io_open(struct inode *inode, struct file *file)
-{
- return single_open(file, psi_io_show, NULL);
-}
-
-static int psi_memory_open(struct inode *inode, struct file *file)
-{
- return single_open(file, psi_memory_show, NULL);
-}
-
-static int psi_cpu_open(struct inode *inode, struct file *file)
-{
- return single_open(file, psi_cpu_show, NULL);
-}
-
-static const struct file_operations psi_io_fops = {
- .open = psi_io_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static const struct file_operations psi_memory_fops = {
- .open = psi_memory_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static const struct file_operations psi_cpu_fops = {
- .open = psi_cpu_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(psi_cpu);

static int __init psi_proc_init(void)
{
--
2.17.0
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