diff options
| author |   Jiri Slaby <jslaby@suse.cz> | 2021-05-05 11:18:56 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-13 16:57:15 +0200 |
| commit | 89bb4a3622f99ea736eab185db9b46b4fa4c29c0 (patch) | |
| tree | 3ed8005b275074ed1c022ee8b20573b1d980eaa0 /drivers/tty | |
| parent | n_tty: remove n_tty_receive_char wrapper (diff) | |
| download | linux-dev-89bb4a3622f99ea736eab185db9b46b4fa4c29c0.tar.xz linux-dev-89bb4a3622f99ea736eab185db9b46b4fa4c29c0.zip | |
n_tty: remove n_tty_receive_char_fast
n_tty_receive_char_fast is a copy of n_tty_receive_char with one
exception: PARMRK is not doubled in the former. Unify these two and
double PARMRK depending on a newly added parameter (bool parmrk_dbl).
I don't think the theoretical speedup is worth the code duplication.
Which is directly connected with maintenance burden.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210505091928.22010-4-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/n_tty.c | 32 |
1 files changed, 6 insertions, 26 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 0a8c9440f5d2..0adc79bae839 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1400,8 +1400,8 @@ handle_newline: return 0; } -static inline void -n_tty_receive_char(struct tty_struct *tty, unsigned char c) +static void n_tty_receive_char(struct tty_struct *tty, unsigned char c, + bool parmrk_dbl) { struct n_tty_data *ldata = tty->disc_data; @@ -1418,31 +1418,11 @@ n_tty_receive_char(struct tty_struct *tty, unsigned char c) commit_echoes(tty); } /* PARMRK doubling check */ - if (c == (unsigned char) '\377' && I_PARMRK(tty)) + if (parmrk_dbl && c == (unsigned char) '\377' && I_PARMRK(tty)) put_tty_queue(c, ldata); put_tty_queue(c, ldata); } -static inline void -n_tty_receive_char_fast(struct tty_struct *tty, unsigned char c) -{ - struct n_tty_data *ldata = tty->disc_data; - - if (tty->stopped && !tty->flow_stopped && I_IXON(tty) && I_IXANY(tty)) { - start_tty(tty); - process_echoes(tty); - } - if (L_ECHO(tty)) { - finish_erasing(ldata); - /* Record the column of first canon char. */ - if (ldata->canon_head == ldata->read_head) - echo_set_canon_col(ldata); - echo_char(c, tty); - commit_echoes(tty); - } - put_tty_queue(c, ldata); -} - static void n_tty_receive_char_closing(struct tty_struct *tty, unsigned char c) { if (I_ISTRIP(tty)) @@ -1494,7 +1474,7 @@ n_tty_receive_char_lnext(struct tty_struct *tty, unsigned char c, char flag) c &= 0x7f; if (I_IUCLC(tty) && L_IEXTEN(tty)) c = tolower(c); - n_tty_receive_char(tty, c); + n_tty_receive_char(tty, c, true); } else n_tty_receive_char_flagged(tty, c, flag); } @@ -1572,7 +1552,7 @@ n_tty_receive_buf_standard(struct tty_struct *tty, const unsigned char *cp, continue; } if (!test_bit(c, ldata->char_map)) - n_tty_receive_char(tty, c); + n_tty_receive_char(tty, c, true); else if (n_tty_receive_char_special(tty, c) && count) { if (fp) flag = *fp++; @@ -1598,7 +1578,7 @@ n_tty_receive_buf_fast(struct tty_struct *tty, const unsigned char *cp, unsigned char c = *cp++; if (!test_bit(c, ldata->char_map)) - n_tty_receive_char_fast(tty, c); + n_tty_receive_char(tty, c, false); else if (n_tty_receive_char_special(tty, c) && count) { if (fp) flag = *fp++; |