[xen master] xen/arm: vpl011: Add a new buffer_available function in xenconsole

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[xen master] xen/arm: vpl011: Add a new buffer_available function in xenconsole

patchbot
commit 46982db8c65e9a6a3da68c4e37da57c603564157
Author:     Bhupinder Thakur <[hidden email]>
AuthorDate: Wed Sep 27 11:43:21 2017 +0530
Commit:     Stefano Stabellini <[hidden email]>
CommitDate: Tue Oct 3 15:23:37 2017 -0700

    xen/arm: vpl011: Add a new buffer_available function in xenconsole
   
    This patch introduces a new buffer_available function to check if
    more data is allowed to be buffered.
   
    Signed-off-by: Bhupinder Thakur <[hidden email]>
    Reviewed-by: Stefano Stabellini <[hidden email]>
    Acked-by: Wei Liu <[hidden email]>
---
 tools/console/daemon/io.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/tools/console/daemon/io.c b/tools/console/daemon/io.c
index 1da08d7..0009bbe 100644
--- a/tools/console/daemon/io.c
+++ b/tools/console/daemon/io.c
@@ -163,6 +163,16 @@ static int write_with_timestamp(int fd, const char *data, size_t sz,
  return 0;
 }
 
+static inline bool buffer_available(struct console *con)
+{
+ if (discard_overflowed_data ||
+    !con->buffer.max_capacity ||
+    con->buffer.size < con->buffer.max_capacity)
+ return true;
+ else
+ return false;
+}
+
 static void buffer_append(struct console *con)
 {
  struct buffer *buffer = &con->buffer;
@@ -1120,9 +1130,7 @@ void handle_io(void)
     con->next_period < next_timeout)
  next_timeout = con->next_period;
  } else if (con->xce_handle != NULL) {
- if (discard_overflowed_data ||
-    !con->buffer.max_capacity ||
-    con->buffer.size < con->buffer.max_capacity) {
+        if (buffer_available(con)) {
  int evtchn_fd = xenevtchn_fd(con->xce_handle);
  con->xce_pollfd_idx = set_fds(evtchn_fd,
     POLLIN|POLLPRI);
--
generated by git-patchbot for /home/xen/git/xen.git#master

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