Messages in this thread Patch in this message | | | Date | Wed, 30 Oct 2013 23:59:54 +0400 | From | Cyrill Gorcunov <> | Subject | [patch 3/6] eventfd: Use sequential fdinfo engine |
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Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andrey Vagin <avagin@openvz.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: James Bottomley <jbottomley@parallels.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Matthew Helsley <matt.helsley@gmail.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk> Cc: Andrew Morton <akpm@linux-foundation.org> --- fs/eventfd.c | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-)
Index: linux-2.6.git/fs/eventfd.c =================================================================== --- linux-2.6.git.orig/fs/eventfd.c +++ linux-2.6.git/fs/eventfd.c @@ -287,9 +287,26 @@ static ssize_t eventfd_write(struct file } #ifdef CONFIG_PROC_FS -static int eventfd_show_fdinfo(struct seq_file *m, struct file *f) +static void *seq_start(struct seq_file *m, loff_t *pos) { - struct eventfd_ctx *ctx = f->private_data; + if (*pos == 0) + return m->private; + return NULL; +} + +static void seq_stop(struct seq_file *m, void *v) +{ +} + +static void *seq_next(struct seq_file *m, void *p, loff_t *pos) +{ + ++*pos; + return NULL; +} + +static int seq_show(struct seq_file *m, void *v) +{ + struct eventfd_ctx *ctx = ((struct file *)v)->private_data; int ret; spin_lock_irq(&ctx->wqh.lock); @@ -299,11 +316,18 @@ static int eventfd_show_fdinfo(struct se return ret; } + +static struct seq_operations eventfd_fdinfo_ops = { + .start = seq_start, + .next = seq_next, + .stop = seq_stop, + .show = seq_show, +}; #endif static const struct file_operations eventfd_fops = { #ifdef CONFIG_PROC_FS - .show_fdinfo = eventfd_show_fdinfo, + .fdinfo_ops = &eventfd_fdinfo_ops, #endif .release = eventfd_release, .poll = eventfd_poll,
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