From 98ac62defe529d04a192688f40d801a2d8fbcf98 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Mon, 28 Nov 2005 10:06:23 +0100 Subject: [PATCH] [PATCH] mark several libata datastructures const Hi, the patch below marks several libata (and libata-driver) structures const so that they end up in the .rodata segment and don't false-share cachelines with things that get dirtied often. Signed-off-by: Arjan van de Ven Signed-off-by: Jeff Garzik --- drivers/scsi/ahci.c | 2 +- drivers/scsi/libata-core.c | 4 ++-- drivers/scsi/libata-scsi.c | 6 +++--- drivers/scsi/sata_mv.c | 2 +- drivers/scsi/sata_promise.c | 2 +- drivers/scsi/sata_qstor.c | 2 +- drivers/scsi/sata_sil.c | 2 +- drivers/scsi/sata_sx4.c | 2 +- 8 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index 83467a05dc8e..cfbdd3f071b6 100644 --- a/drivers/scsi/ahci.c +++ b/drivers/scsi/ahci.c @@ -243,7 +243,7 @@ static const struct ata_port_operations ahci_ops = { .port_stop = ahci_port_stop, }; -static struct ata_port_info ahci_port_info[] = { +static const struct ata_port_info ahci_port_info[] = { /* board_ahci */ { .sht = &ahci_sht, diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 9f27e8d0e774..11ed6fa27096 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -605,7 +605,7 @@ void ata_rwcmd_protocol(struct ata_queued_cmd *qc) tf->command = ata_rw_cmds[index + lba48 + write]; } -static const char * xfer_mode_str[] = { +static const char * const xfer_mode_str[] = { "UDMA/16", "UDMA/25", "UDMA/33", @@ -2083,7 +2083,7 @@ static void ata_pr_blacklisted(const struct ata_port *ap, ap->id, dev->devno); } -static const char * ata_dma_blacklist [] = { +static const char * const ata_dma_blacklist [] = { "WDC AC11000H", "WDC AC22100H", "WDC AC32500H", diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 3b4ca55a3332..b21b8854072e 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -418,7 +418,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc, int i; /* Based on the 3ware driver translation table */ - static unsigned char sense_table[][4] = { + static const unsigned char sense_table[][4] = { /* BBD|ECC|ID|MAR */ {0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command /* BBD|ECC|ID */ @@ -449,7 +449,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc, {0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error {0xFF, 0xFF, 0xFF, 0xFF}, // END mark }; - static unsigned char stat_table[][4] = { + static const unsigned char stat_table[][4] = { /* Must be first because BUSY means no other bits valid */ {0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now {0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault @@ -1532,7 +1532,7 @@ unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf, return 0; } -static const char *inq_83_str = "Linux ATA-SCSI simulator"; +static const char * const inq_83_str = "Linux ATA-SCSI simulator"; /** * ata_scsiop_inq_83 - Simulate INQUIRY EVPD page 83, device identity diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c index ab7432a5778e..c94176693d1f 100644 --- a/drivers/scsi/sata_mv.c +++ b/drivers/scsi/sata_mv.c @@ -430,7 +430,7 @@ static const struct ata_port_operations mv6_ops = { .host_stop = mv_host_stop, }; -static struct ata_port_info mv_port_info[] = { +static const struct ata_port_info mv_port_info[] = { { /* chip_504x */ .sht = &mv_sht, .host_flags = MV_COMMON_FLAGS, diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c index 25e56fb9ad9e..02089069b0f6 100644 --- a/drivers/scsi/sata_promise.c +++ b/drivers/scsi/sata_promise.c @@ -158,7 +158,7 @@ static const struct ata_port_operations pdc_pata_ops = { .host_stop = ata_pci_host_stop, }; -static struct ata_port_info pdc_port_info[] = { +static const struct ata_port_info pdc_port_info[] = { /* board_2037x */ { .sht = &pdc_ata_sht, diff --git a/drivers/scsi/sata_qstor.c b/drivers/scsi/sata_qstor.c index a8987f5ff5cc..6b9c3ae07cb3 100644 --- a/drivers/scsi/sata_qstor.c +++ b/drivers/scsi/sata_qstor.c @@ -170,7 +170,7 @@ static const struct ata_port_operations qs_ata_ops = { .bmdma_status = qs_bmdma_status, }; -static struct ata_port_info qs_port_info[] = { +static const struct ata_port_info qs_port_info[] = { /* board_2068_idx */ { .sht = &qs_ata_sht, diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c index 36091868560d..d2053487c73b 100644 --- a/drivers/scsi/sata_sil.c +++ b/drivers/scsi/sata_sil.c @@ -176,7 +176,7 @@ static const struct ata_port_operations sil_ops = { .host_stop = ata_pci_host_stop, }; -static struct ata_port_info sil_port_info[] = { +static const struct ata_port_info sil_port_info[] = { /* sil_3112 */ { .sht = &sil_sht, diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c index dcc3ad9a9d6e..7c4b53575510 100644 --- a/drivers/scsi/sata_sx4.c +++ b/drivers/scsi/sata_sx4.c @@ -215,7 +215,7 @@ static const struct ata_port_operations pdc_20621_ops = { .host_stop = pdc20621_host_stop, }; -static struct ata_port_info pdc_port_info[] = { +static const struct ata_port_info pdc_port_info[] = { /* board_20621 */ { .sht = &pdc_sata_sht, -- GitLab