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| author | Peter Hurley <peter@hurleysoftware.com> | 2013-06-15 09:36:16 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-23 16:47:10 -0700 |
| commit | 9114fe8ccf1871f630d2c14cd60e5f455b015459 (patch) | |
| tree | 1549929e9dfe5faf7a43897f5901a6d005cb6bec /drivers/tty/tty_buffer.c | |
| parent | a7c8d58c79853adeebf0a1ddc9c63e433b4d97f1 (diff) | |
| download | linux-9114fe8ccf1871f630d2c14cd60e5f455b015459.tar.bz2 | |
tty: Remove private constant from global namespace
TTY_BUFFER_PAGE is only used within drivers/tty/tty_buffer.c;
relocate to that file scope.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/tty_buffer.c')
| -rw-r--r-- | drivers/tty/tty_buffer.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index f22e116db105..c043136fbe51 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -28,6 +28,16 @@ */ #define TTYB_MEM_LIMIT 65536 +/* + * We default to dicing tty buffer allocations to this many characters + * in order to avoid multiple page allocations. We know the size of + * tty_buffer itself but it must also be taken into account that the + * the buffer is 256 byte aligned. See tty_buffer_find for the allocation + * logic this must match + */ + +#define TTY_BUFFER_PAGE (((PAGE_SIZE - sizeof(struct tty_buffer)) / 2) & ~0xFF) + /** * tty_buffer_lock_exclusive - gain exclusive access to buffer |