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authorJens Axboe <axboe@kernel.dk>2018-02-07 15:54:20 -0700
committerJens Axboe <axboe@kernel.dk>2018-02-07 15:54:20 -0700
commit61a695184fcc8f225327206b88320279dd8684af (patch)
tree6cbda2b0e7de94ebad95072d17cc0aa82c9d8ab3 /include/linux/seq_file.h
parent9e05c864993c5442227f83ae1694a737d7a102ed (diff)
parent581e400ff935d34d95811258586128bf11baef15 (diff)
Merge branch 'master' into test
* master: (1190 commits) ASoC: stm32: add of dependency for stm32 drivers ASoC: mt8173-rt5650: fix child-node lookup ASoC: dapm: fix debugfs read using path->connected platform/x86: samsung-laptop: Re-use DEFINE_SHOW_ATTRIBUTE() macro platform/x86: ideapad-laptop: Re-use DEFINE_SHOW_ATTRIBUTE() macro platform/x86: dell-laptop: Re-use DEFINE_SHOW_ATTRIBUTE() macro seq_file: Introduce DEFINE_SHOW_ATTRIBUTE() helper macro Documentation/sysctl/user.txt: fix typo MAINTAINERS: update ARM/QUALCOMM SUPPORT patterns MAINTAINERS: update various PALM patterns MAINTAINERS: update "ARM/OXNAS platform support" patterns MAINTAINERS: update Cortina/Gemini patterns MAINTAINERS: remove ARM/CLKDEV SUPPORT file pattern MAINTAINERS: remove ANDROID ION pattern mm: docs: add blank lines to silence sphinx "Unexpected indentation" errors mm: docs: fix parameter names mismatch mm: docs: fixup punctuation pipe: read buffer limits atomically pipe: simplify round_pipe_size() pipe: reject F_SETPIPE_SZ with size over UINT_MAX ...
Diffstat (limited to 'include/linux/seq_file.h')
-rw-r--r--include/linux/seq_file.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 09c6e28746f9..ab437dd2e3b9 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -140,6 +140,20 @@ void *__seq_open_private(struct file *, const struct seq_operations *, int);
int seq_open_private(struct file *, const struct seq_operations *, int);
int seq_release_private(struct inode *, struct file *);
+#define DEFINE_SHOW_ATTRIBUTE(__name) \
+static int __name ## _open(struct inode *inode, struct file *file) \
+{ \
+ return single_open(file, __name ## _show, inode->i_private); \
+} \
+ \
+static const struct file_operations __name ## _fops = { \
+ .owner = THIS_MODULE, \
+ .open = __name ## _open, \
+ .read = seq_read, \
+ .llseek = seq_lseek, \
+ .release = single_release, \
+}
+
static inline struct user_namespace *seq_user_ns(struct seq_file *seq)
{
#ifdef CONFIG_USER_NS