Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code. Signed-off-by: Qinglang Miao <miaoqingl...@huawei.com> --- v2: based on linux-next(20200917), and can be applied to mainline cleanly now.
arch/powerpc/mm/ptdump/bats.c | 24 +++++++----------------- arch/powerpc/mm/ptdump/hashpagetable.c | 12 +----------- arch/powerpc/mm/ptdump/ptdump.c | 13 +------------ arch/powerpc/mm/ptdump/segment_regs.c | 12 +----------- 4 files changed, 10 insertions(+), 51 deletions(-) diff --git a/arch/powerpc/mm/ptdump/bats.c b/arch/powerpc/mm/ptdump/bats.c index e29b338d4..a24495e93 100644 --- a/arch/powerpc/mm/ptdump/bats.c +++ b/arch/powerpc/mm/ptdump/bats.c @@ -56,7 +56,7 @@ static void bat_show_601(struct seq_file *m, int idx, u32 lower, u32 upper) #define BAT_SHOW_601(_m, _n, _l, _u) bat_show_601(_m, _n, mfspr(_l), mfspr(_u)) -static int bats_show_601(struct seq_file *m, void *v) +static int bats_601_show(struct seq_file *m, void *v) { seq_puts(m, "---[ Block Address Translation ]---\n"); @@ -113,7 +113,7 @@ static void bat_show_603(struct seq_file *m, int idx, u32 lower, u32 upper, bool #define BAT_SHOW_603(_m, _n, _l, _u, _d) bat_show_603(_m, _n, mfspr(_l), mfspr(_u), _d) -static int bats_show_603(struct seq_file *m, void *v) +static int bats_603_show(struct seq_file *m, void *v) { seq_puts(m, "---[ Instruction Block Address Translation ]---\n"); @@ -144,25 +144,15 @@ static int bats_show_603(struct seq_file *m, void *v) return 0; } -static int bats_open(struct inode *inode, struct file *file) -{ - if (IS_ENABLED(CONFIG_PPC_BOOK3S_601)) - return single_open(file, bats_show_601, NULL); - - return single_open(file, bats_show_603, NULL); -} - -static const struct file_operations bats_fops = { - .open = bats_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(bats_601); +DEFINE_SHOW_ATTRIBUTE(bats_603); static int __init bats_init(void) { debugfs_create_file("block_address_translation", 0400, - powerpc_debugfs_root, NULL, &bats_fops); + powerpc_debugfs_root, NULL, + IS_ENABLED(CONFIG_PPC_BOOK3S_601) ? + &bats_601_fops : & bats_603_fops); return 0; } device_initcall(bats_init); diff --git a/arch/powerpc/mm/ptdump/hashpagetable.c b/arch/powerpc/mm/ptdump/hashpagetable.c index ad6df9a2e..c7f824d29 100644 --- a/arch/powerpc/mm/ptdump/hashpagetable.c +++ b/arch/powerpc/mm/ptdump/hashpagetable.c @@ -526,17 +526,7 @@ static int ptdump_show(struct seq_file *m, void *v) return 0; } -static int ptdump_open(struct inode *inode, struct file *file) -{ - return single_open(file, ptdump_show, NULL); -} - -static const struct file_operations ptdump_fops = { - .open = ptdump_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(ptdump); static int ptdump_init(void) { diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c index aca354fb6..6bbf85ff2 100644 --- a/arch/powerpc/mm/ptdump/ptdump.c +++ b/arch/powerpc/mm/ptdump/ptdump.c @@ -413,18 +413,7 @@ static int ptdump_show(struct seq_file *m, void *v) return 0; } - -static int ptdump_open(struct inode *inode, struct file *file) -{ - return single_open(file, ptdump_show, NULL); -} - -static const struct file_operations ptdump_fops = { - .open = ptdump_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(ptdump); static void build_pgtable_complete_mask(void) { diff --git a/arch/powerpc/mm/ptdump/segment_regs.c b/arch/powerpc/mm/ptdump/segment_regs.c index dde2fe8de..9e870d44c 100644 --- a/arch/powerpc/mm/ptdump/segment_regs.c +++ b/arch/powerpc/mm/ptdump/segment_regs.c @@ -41,17 +41,7 @@ static int sr_show(struct seq_file *m, void *v) return 0; } -static int sr_open(struct inode *inode, struct file *file) -{ - return single_open(file, sr_show, NULL); -} - -static const struct file_operations sr_fops = { - .open = sr_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; +DEFINE_SHOW_ATTRIBUTE(sr); static int __init sr_init(void) { -- 2.23.0