Re: [PATCH v2 6/6] scsi: misc: Print single-character strings with seq_putc

From: Finn Thain
Date: Thu Jan 29 2015 - 20:45:42 EST

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Reviewed-by: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>

For the NCR5380 bits:

Acked-by: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>

On Wed, 3 Dec 2014, Rasmus Villemoes wrote:

> Using seq_putc to print a single character saves at least a strlen()
> call and a memory access, and may also give a small .text reduction.
>
> Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/scsi/NCR5380.c | 2 +-
> drivers/scsi/advansys.c | 34 +++++++++++++++++-----------------
> drivers/scsi/aic7xxx/aic79xx_proc.c | 10 +++++-----
> drivers/scsi/aic7xxx/aic7xxx_proc.c | 10 +++++-----
> drivers/scsi/atari_NCR5380.c | 2 +-
> drivers/scsi/dc395x.c | 4 ++--
> drivers/scsi/esas2r/esas2r_main.c | 2 +-
> drivers/scsi/in2000.c | 2 +-
> drivers/scsi/ips.c | 2 +-
> drivers/scsi/nsp32.c | 2 +-
> drivers/scsi/pcmcia/nsp_cs.c | 4 ++--
> drivers/scsi/qla2xxx/qla_dfs.c | 2 +-
> drivers/scsi/scsi_proc.c | 10 +++++-----
> drivers/scsi/scsi_trace.c | 2 +-
> drivers/scsi/wd33c93.c | 2 +-
> 15 files changed, 45 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
> index a30af00..8981701 100644
> --- a/drivers/scsi/NCR5380.c
> +++ b/drivers/scsi/NCR5380.c
> @@ -764,7 +764,7 @@ static void lprint_command(unsigned char *command, struct seq_file *m)
> lprint_opcode(command[0], m);
> for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
> seq_printf(m, "%02x ", command[i]);
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
>
> static void lprint_opcode(int opcode, struct seq_file *m)
> diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c
> index c4d0910..81ffb0f 100644
> --- a/drivers/scsi/advansys.c
> +++ b/drivers/scsi/advansys.c
> @@ -3088,7 +3088,7 @@ static void asc_prt_asc_board_eeprom(struct seq_file *m, struct Scsi_Host *shost
> for (i = 0; i <= ASC_MAX_TID; i++)
> seq_printf(m, " %c",
> (ep->init_sdtr & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> #ifdef CONFIG_ISA
> if (asc_dvc_varp->bus_type & ASC_IS_ISA) {
> @@ -3203,7 +3203,7 @@ static void asc_prt_adv_board_eeprom(struct seq_file *m, struct Scsi_Host *shost
> seq_puts(m, " Target ID: ");
> for (i = 0; i <= ADV_MAX_TID; i++)
> seq_printf(m, " %X", i);
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
> word = ep_3550->disc_enable;
> @@ -3216,7 +3216,7 @@ static void asc_prt_adv_board_eeprom(struct seq_file *m, struct Scsi_Host *shost
> for (i = 0; i <= ADV_MAX_TID; i++)
> seq_printf(m, " %c",
> (word & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
> word = ep_3550->tagqng_able;
> @@ -3229,7 +3229,7 @@ static void asc_prt_adv_board_eeprom(struct seq_file *m, struct Scsi_Host *shost
> for (i = 0; i <= ADV_MAX_TID; i++)
> seq_printf(m, " %c",
> (word & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
> word = ep_3550->start_motor;
> @@ -3242,7 +3242,7 @@ static void asc_prt_adv_board_eeprom(struct seq_file *m, struct Scsi_Host *shost
> for (i = 0; i <= ADV_MAX_TID; i++)
> seq_printf(m, " %c",
> (word & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
> seq_puts(m, " Synchronous Transfer:");
> @@ -3250,7 +3250,7 @@ static void asc_prt_adv_board_eeprom(struct seq_file *m, struct Scsi_Host *shost
> seq_printf(m, " %c",
> (ep_3550->sdtr_able & ADV_TID_TO_TIDMASK(i)) ?
> 'Y' : 'N');
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
>
> if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
> @@ -3259,7 +3259,7 @@ static void asc_prt_adv_board_eeprom(struct seq_file *m, struct Scsi_Host *shost
> seq_printf(m, " %c",
> (ep_3550->ultra_able & ADV_TID_TO_TIDMASK(i))
> ? 'Y' : 'N');
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
>
> if (adv_dvc_varp->chip_type == ADV_CHIP_ASC3550) {
> @@ -3273,7 +3273,7 @@ static void asc_prt_adv_board_eeprom(struct seq_file *m, struct Scsi_Host *shost
> for (i = 0; i <= ADV_MAX_TID; i++)
> seq_printf(m, " %c",
> (word & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> if (adv_dvc_varp->chip_type == ADV_CHIP_ASC38C0800 ||
> adv_dvc_varp->chip_type == ADV_CHIP_ASC38C1600) {
> @@ -3318,7 +3318,7 @@ static void asc_prt_adv_board_eeprom(struct seq_file *m, struct Scsi_Host *shost
> seq_puts(m, "\n ");
> sdtr_speed >>= 4;
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
> }
>
> @@ -3448,7 +3448,7 @@ static void asc_prt_asc_board_info(struct seq_file *m, struct Scsi_Host *shost)
> i,
> (v->sdtr_done & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> for (i = 0; i <= ASC_MAX_TID; i++) {
> uchar syn_period_ix;
> @@ -3483,7 +3483,7 @@ static void asc_prt_asc_board_info(struct seq_file *m, struct Scsi_Host *shost)
> seq_puts(m, "*\n");
> renegotiate = 1;
> } else {
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
> }
>
> @@ -3570,7 +3570,7 @@ static void asc_prt_adv_board_info(struct seq_file *m, struct Scsi_Host *shost)
>
> seq_printf(m, " %X:%d", i, lrambyte);
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> AdvReadWordLram(iop_base, ASC_MC_WDTR_ABLE, wdtr_able);
> seq_puts(m, " Wide Enabled:");
> @@ -3584,7 +3584,7 @@ static void asc_prt_adv_board_info(struct seq_file *m, struct Scsi_Host *shost)
> i,
> (wdtr_able & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> AdvReadWordLram(iop_base, ASC_MC_WDTR_DONE, wdtr_done);
> seq_puts(m, " Transfer Bit Width:");
> @@ -3603,11 +3603,11 @@ static void asc_prt_adv_board_info(struct seq_file *m, struct Scsi_Host *shost)
>
> if ((wdtr_able & ADV_TID_TO_TIDMASK(i)) &&
> (wdtr_done & ADV_TID_TO_TIDMASK(i)) == 0) {
> - seq_puts(m, "*");
> + seq_putc(m, '*');
> renegotiate = 1;
> }
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> AdvReadWordLram(iop_base, ASC_MC_SDTR_ABLE, sdtr_able);
> seq_puts(m, " Synchronous Enabled:");
> @@ -3621,7 +3621,7 @@ static void asc_prt_adv_board_info(struct seq_file *m, struct Scsi_Host *shost)
> i,
> (sdtr_able & ADV_TID_TO_TIDMASK(i)) ? 'Y' : 'N');
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> AdvReadWordLram(iop_base, ASC_MC_SDTR_DONE, sdtr_done);
> for (i = 0; i <= ADV_MAX_TID; i++) {
> @@ -3670,7 +3670,7 @@ static void asc_prt_adv_board_info(struct seq_file *m, struct Scsi_Host *shost)
> seq_puts(m, "*\n");
> renegotiate = 1;
> } else {
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
> }
>
> diff --git a/drivers/scsi/aic7xxx/aic79xx_proc.c b/drivers/scsi/aic7xxx/aic79xx_proc.c
> index e095598..add2da5 100644
> --- a/drivers/scsi/aic7xxx/aic79xx_proc.c
> +++ b/drivers/scsi/aic7xxx/aic79xx_proc.c
> @@ -148,9 +148,9 @@ ahd_format_transinfo(struct seq_file *m, struct ahd_transinfo *tinfo)
> }
> seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width));
> } else if (freq != 0) {
> - seq_puts(m, ")");
> + seq_putc(m, ')');
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
>
> static void
> @@ -294,14 +294,14 @@ ahd_linux_show_info(struct seq_file *m, struct Scsi_Host *shost)
> seq_puts(m, "Serial EEPROM:\n");
> for (i = 0; i < sizeof(*ahd->seep_config)/2; i++) {
> if (((i % 8) == 0) && (i != 0)) {
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
> seq_printf(m, "0x%.4x ",
> ((uint16_t*)ahd->seep_config)[i]);
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> if ((ahd->features & AHD_WIDE) == 0)
> max_targ = 8;
> diff --git a/drivers/scsi/aic7xxx/aic7xxx_proc.c b/drivers/scsi/aic7xxx/aic7xxx_proc.c
> index 25511ca..1845960 100644
> --- a/drivers/scsi/aic7xxx/aic7xxx_proc.c
> +++ b/drivers/scsi/aic7xxx/aic7xxx_proc.c
> @@ -125,9 +125,9 @@ ahc_format_transinfo(struct seq_file *m, struct ahc_transinfo *tinfo)
> }
> seq_printf(m, "%dbit)", 8 * (0x01 << tinfo->width));
> } else if (freq != 0) {
> - seq_puts(m, ")");
> + seq_putc(m, ')');
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
>
> static void
> @@ -308,14 +308,14 @@ ahc_linux_show_info(struct seq_file *m, struct Scsi_Host *shost)
> seq_puts(m, "Serial EEPROM:\n");
> for (i = 0; i < sizeof(*ahc->seep_config)/2; i++) {
> if (((i % 8) == 0) && (i != 0)) {
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
> seq_printf(m, "0x%.4x ",
> ((uint16_t*)ahc->seep_config)[i]);
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> max_targ = 16;
> if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
> diff --git a/drivers/scsi/atari_NCR5380.c b/drivers/scsi/atari_NCR5380.c
> index 04d0c6e..a702554 100644
> --- a/drivers/scsi/atari_NCR5380.c
> +++ b/drivers/scsi/atari_NCR5380.c
> @@ -716,7 +716,7 @@ static void show_Scsi_Cmnd(struct scsi_cmnd *cmd, struct seq_file *m)
> seq_printf(m, "%2d (0x%02x)", command[0], command[0]);
> for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
> seq_printf(m, " %02x", command[i]);
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
>
> static int __maybe_unused NCR5380_show_info(struct seq_file *m,
> diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
> index 48c79f9..5ee7f44 100644
> --- a/drivers/scsi/dc395x.c
> +++ b/drivers/scsi/dc395x.c
> @@ -4692,7 +4692,7 @@ static int dc395x_show_info(struct seq_file *m, struct Scsi_Host *host)
> if (timer_pending(&acb->waiting_timer))
> seq_puts(m, "Waiting queue timer running\n");
> else
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> list_for_each_entry(dcb, &acb->dcb_list, list) {
> struct ScsiReqBlk *srb;
> @@ -4709,7 +4709,7 @@ static int dc395x_show_info(struct seq_file *m, struct Scsi_Host *host)
> list_for_each_entry(srb, &dcb->srb_going_list, list)
> seq_printf(m, " %p", srb->cmd);
> if (!list_empty(&dcb->srb_waiting_list) || !list_empty(&dcb->srb_going_list))
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
>
> if (debug_enabled(DBG_1)) {
> diff --git a/drivers/scsi/esas2r/esas2r_main.c b/drivers/scsi/esas2r/esas2r_main.c
> index 593ff8a..226c280 100644
> --- a/drivers/scsi/esas2r/esas2r_main.c
> +++ b/drivers/scsi/esas2r/esas2r_main.c
> @@ -750,7 +750,7 @@ int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh)
> if (dev_count == 0)
> seq_puts(m, "none\n");
>
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> return 0;
>
> }
> diff --git a/drivers/scsi/in2000.c b/drivers/scsi/in2000.c
> index a73395e..3882d9f 100644
> --- a/drivers/scsi/in2000.c
> +++ b/drivers/scsi/in2000.c
> @@ -2273,7 +2273,7 @@ static int in2000_show_info(struct seq_file *m, struct Scsi_Host *instance)
> if (hd->proc & PR_TEST) {
> ; /* insert your own custom function here */
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> spin_unlock_irqrestore(instance->host_lock, flags);
> #endif /* PROC_INTERFACE */
> return 0;
> diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
> index 615a9a3..7542f11 100644
> --- a/drivers/scsi/ips.c
> +++ b/drivers/scsi/ips.c
> @@ -2137,7 +2137,7 @@ ips_host_info(ips_ha_t *ha, struct seq_file *m)
> seq_printf(m, "\tCurrent Active PT Commands : %d\n",
> ha->num_ioctl);
>
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
> return 0;
> }
> diff --git a/drivers/scsi/nsp32.c b/drivers/scsi/nsp32.c
> index 8f6b1b4..c6077ce 100644
> --- a/drivers/scsi/nsp32.c
> +++ b/drivers/scsi/nsp32.c
> @@ -1509,7 +1509,7 @@ static int nsp32_show_info(struct seq_file *m, struct Scsi_Host *host)
> data->target[id].offset
> );
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
> return 0;
> }
> diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c
> index acf558a..1b6c883 100644
> --- a/drivers/scsi/pcmcia/nsp_cs.c
> +++ b/drivers/scsi/pcmcia/nsp_cs.c
> @@ -1398,7 +1398,7 @@ static int nsp_show_info(struct seq_file *m, struct Scsi_Host *host)
> seq_puts(m, "???");
> break;
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
>
>
> spin_lock_irqsave(&(data->Lock), flags);
> @@ -1439,7 +1439,7 @@ static int nsp_show_info(struct seq_file *m, struct Scsi_Host *host)
> data->Sync[id].SyncOffset
> );
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> }
> return 0;
> }
> diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
> index c837ba3..15cf074 100644
> --- a/drivers/scsi/qla2xxx/qla_dfs.c
> +++ b/drivers/scsi/qla2xxx/qla_dfs.c
> @@ -38,7 +38,7 @@ qla2x00_dfs_fce_show(struct seq_file *s, void *unused)
> seq_printf(s, "\n%llx: ",
> (unsigned long long)((cnt * 4) + fce_start));
> else
> - seq_puts(s, " ");
> + seq_putc(s, ' ');
> seq_printf(s, "%08x", *fce++);
> }
>
> diff --git a/drivers/scsi/scsi_proc.c b/drivers/scsi/scsi_proc.c
> index 581de8f..251598e 100644
> --- a/drivers/scsi/scsi_proc.c
> +++ b/drivers/scsi/scsi_proc.c
> @@ -191,7 +191,7 @@ static int proc_print_scsidevice(struct device *dev, void *data)
> if (sdev->vendor[i] >= 0x20)
> seq_putc(s, sdev->vendor[i]);
> else
> - seq_puts(s, " ");
> + seq_putc(s, ' ');
> }
>
> seq_puts(s, " Model: ");
> @@ -199,7 +199,7 @@ static int proc_print_scsidevice(struct device *dev, void *data)
> if (sdev->model[i] >= 0x20)
> seq_putc(s, sdev->model[i]);
> else
> - seq_puts(s, " ");
> + seq_putc(s, ' ');
> }
>
> seq_puts(s, " Rev: ");
> @@ -207,10 +207,10 @@ static int proc_print_scsidevice(struct device *dev, void *data)
> if (sdev->rev[i] >= 0x20)
> seq_putc(s, sdev->rev[i]);
> else
> - seq_puts(s, " ");
> + seq_putc(s, ' ');
> }
>
> - seq_puts(s, "\n");
> + seq_putc(s, '\n');
>
> seq_printf(s, " Type: %s ", scsi_device_type(sdev->type));
> seq_printf(s, " ANSI SCSI revision: %02x",
> @@ -218,7 +218,7 @@ static int proc_print_scsidevice(struct device *dev, void *data)
> if (sdev->scsi_level == 2)
> seq_puts(s, " CCS\n");
> else
> - seq_puts(s, "\n");
> + seq_putc(s, '\n');
>
> out:
> return 0;
> diff --git a/drivers/scsi/scsi_trace.c b/drivers/scsi/scsi_trace.c
> index e4e122b..5cc386c 100644
> --- a/drivers/scsi/scsi_trace.c
> +++ b/drivers/scsi/scsi_trace.c
> @@ -249,7 +249,7 @@ scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len)
> {
> const char *ret = trace_seq_buffer_ptr(p);
>
> - trace_seq_puts(p, "-");
> + trace_seq_putc(p, '-');
> trace_seq_putc(p, 0);
>
> return ret;
> diff --git a/drivers/scsi/wd33c93.c b/drivers/scsi/wd33c93.c
> index 6e041a7..9e09da4 100644
> --- a/drivers/scsi/wd33c93.c
> +++ b/drivers/scsi/wd33c93.c
> @@ -2192,7 +2192,7 @@ wd33c93_show_info(struct seq_file *m, struct Scsi_Host *instance)
> cmd = (struct scsi_cmnd *) cmd->host_scribble;
> }
> }
> - seq_puts(m, "\n");
> + seq_putc(m, '\n');
> spin_unlock_irq(&hd->lock);
> #endif /* PROC_INTERFACE */
> return 0;
>
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