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| author | Christoph Hellwig <hch@lst.de> | 2018-12-12 08:41:19 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-01-09 03:57:42 +0100 |
| commit | 8d22022c3a56314b182810794cae47686b765313 (patch) | |
| tree | 7ee0ab62e3525d48b920f24041b8bfd731da74f7 /drivers/scsi/gdth_proc.c | |
| parent | scsi: gdth: refactor ioc_general (diff) | |
| download | linux-8d22022c3a56314b182810794cae47686b765313.tar.xz linux-8d22022c3a56314b182810794cae47686b765313.zip | |
scsi: gdth: reuse dma coherent allocation in gdth_show_info
gdth_show_info currently allocs and frees a dma buffer four times which
isn't very efficient. Reuse a single allocation instead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/gdth_proc.c')
| -rw-r--r-- | drivers/scsi/gdth_proc.c | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/drivers/scsi/gdth_proc.c b/drivers/scsi/gdth_proc.c index 3a9751a80225..bd5532a80b0e 100644 --- a/drivers/scsi/gdth_proc.c +++ b/drivers/scsi/gdth_proc.c @@ -226,11 +226,13 @@ int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) #endif if (ha->more_proc) { + size_t size = max_t(size_t, GDTH_SCRATCH, sizeof(gdth_hget_str)); + /* more information: 2. about physical devices */ seq_puts(m, "\nPhysical Devices:"); flag = FALSE; - buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr); + buf = gdth_ioctl_alloc(ha, size, FALSE, &paddr); if (!buf) goto stop_output; for (i = 0; i < ha->bus_cnt; ++i) { @@ -323,7 +325,6 @@ int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) } } } - gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr); if (!flag) seq_puts(m, "\n --\n"); @@ -332,9 +333,6 @@ int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) seq_puts(m, "\nLogical Drives:"); flag = FALSE; - buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr); - if (!buf) - goto stop_output; for (i = 0; i < MAX_LDRIVES; ++i) { if (!ha->hdr[i].is_logdrv) continue; @@ -408,7 +406,6 @@ int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) seq_printf(m, " To Array Drv.:\t%s\n", hrec); } - gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr); if (!flag) seq_puts(m, "\n --\n"); @@ -417,9 +414,6 @@ int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) seq_puts(m, "\nArray Drives:"); flag = FALSE; - buf = gdth_ioctl_alloc(ha, GDTH_SCRATCH, FALSE, &paddr); - if (!buf) - goto stop_output; for (i = 0; i < MAX_LDRIVES; ++i) { if (!(ha->hdr[i].is_arraydrv && ha->hdr[i].is_master)) continue; @@ -468,8 +462,7 @@ int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) hrec); } } - gdth_ioctl_free(ha, GDTH_SCRATCH, buf, paddr); - + if (!flag) seq_puts(m, "\n --\n"); @@ -477,9 +470,6 @@ int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) seq_puts(m, "\nHost Drives:"); flag = FALSE; - buf = gdth_ioctl_alloc(ha, sizeof(gdth_hget_str), FALSE, &paddr); - if (!buf) - goto stop_output; for (i = 0; i < MAX_LDRIVES; ++i) { if (!ha->hdr[i].is_logdrv || (ha->hdr[i].is_arraydrv && !ha->hdr[i].is_master)) @@ -510,7 +500,7 @@ int gdth_show_info(struct seq_file *m, struct Scsi_Host *host) } } } - gdth_ioctl_free(ha, sizeof(gdth_hget_str), buf, paddr); + gdth_ioctl_free(ha, size, buf, paddr); for (i = 0; i < MAX_HDRIVES; ++i) { if (!(ha->hdr[i].present)) |