From 2dd951ecd511756f405ae9324db87bb0159f6225 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Thu, 8 Jan 2015 07:43:48 +0100 Subject: [PATCH] scsi: Conditionally compile in constants.c Instead of having constants.c littered with ifdef statements we should be moving dummy functions into the header and condintionally compile in constants.c if selected. And update the Kconfig description to reflect the actual size difference. Suggested-by: Christoph Hellwig Tested-by: Robert Elliott Reviewed-by: Robert Elliott Signed-off-by: Hannes Reinecke Signed-off-by: Christoph Hellwig --- drivers/scsi/Kconfig | 4 +-- drivers/scsi/Makefile | 4 +-- drivers/scsi/constants.c | 44 ------------------------ drivers/xen/xen-scsiback.c | 1 + include/scsi/scsi_dbg.h | 68 +++++++++++++++++++++++++++++++++++--- 5 files changed, 69 insertions(+), 52 deletions(-) diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 9c92f415229f..b021bcb88537 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -201,12 +201,12 @@ config SCSI_ENCLOSURE certain enclosure conditions to be reported and is not required. config SCSI_CONSTANTS - bool "Verbose SCSI error reporting (kernel size +=12K)" + bool "Verbose SCSI error reporting (kernel size +=75K)" depends on SCSI help The error messages regarding your SCSI hardware will be easier to understand if you say Y here; it will enlarge your kernel by about - 12 KB. If in doubt, say Y. + 75 KB. If in doubt, say Y. config SCSI_LOGGING bool "SCSI logging facility" diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile index 447c2d24aafa..dee160a4f163 100644 --- a/drivers/scsi/Makefile +++ b/drivers/scsi/Makefile @@ -159,9 +159,9 @@ obj-$(CONFIG_SCSI_OSD_INITIATOR) += osd/ # This goes last, so that "real" scsi devices probe earlier obj-$(CONFIG_SCSI_DEBUG) += scsi_debug.o - -scsi_mod-y += scsi.o hosts.o scsi_ioctl.o constants.o \ +scsi_mod-y += scsi.o hosts.o scsi_ioctl.o \ scsicam.o scsi_error.o scsi_lib.o +scsi_mod-$(CONFIG_SCSI_CONSTANTS) += constants.o scsi_mod-$(CONFIG_SCSI_DMA) += scsi_lib_dma.o scsi_mod-y += scsi_scan.o scsi_sysfs.o scsi_devinfo.o scsi_mod-$(CONFIG_SCSI_NETLINK) += scsi_netlink.o diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c index 956fbdd38681..fa09d4be2b53 100644 --- a/drivers/scsi/constants.c +++ b/drivers/scsi/constants.c @@ -18,8 +18,6 @@ #include #include - - /* Commands with service actions that change the command name */ #define THIRD_PARTY_COPY_OUT 0x83 #define THIRD_PARTY_COPY_IN 0x84 @@ -35,7 +33,6 @@ struct value_name_pair { const char * name; }; -#ifdef CONFIG_SCSI_CONSTANTS static const char * cdb_byte0_names[] = { /* 00-03 */ "Test Unit Ready", "Rezero Unit/Rewind", NULL, "Request Sense", /* 04-07 */ "Format Unit/Medium", "Read Block Limits", NULL, @@ -259,26 +256,6 @@ static struct sa_name_list sa_names_arr[] = { {0, NULL, 0}, }; -#else /* ifndef CONFIG_SCSI_CONSTANTS */ -static const char *cdb_byte0_names[0]; - -static struct sa_name_list sa_names_arr[] = { - {VARIABLE_LENGTH_CMD, NULL, 0}, - {MAINTENANCE_IN, NULL, 0}, - {MAINTENANCE_OUT, NULL, 0}, - {PERSISTENT_RESERVE_IN, NULL, 0}, - {PERSISTENT_RESERVE_OUT, NULL, 0}, - {SERVICE_ACTION_IN_12, NULL, 0}, - {SERVICE_ACTION_OUT_12, NULL, 0}, - {SERVICE_ACTION_BIDIRECTIONAL, NULL, 0}, - {SERVICE_ACTION_IN_16, NULL, 0}, - {SERVICE_ACTION_OUT_16, NULL, 0}, - {THIRD_PARTY_COPY_IN, NULL, 0}, - {THIRD_PARTY_COPY_OUT, NULL, 0}, - {0, NULL, 0}, -}; -#endif /* CONFIG_SCSI_CONSTANTS */ - bool scsi_opcode_sa_name(int opcode, int service_action, const char **cdb_name, const char **sa_name) { @@ -313,8 +290,6 @@ bool scsi_opcode_sa_name(int opcode, int service_action, return true; } -#ifdef CONFIG_SCSI_CONSTANTS - struct error_info { unsigned short code12; /* 0x0302 looks better than 0x03,0x02 */ const char * text; @@ -1203,15 +1178,12 @@ static const char * const snstext[] = { "Completed", /* F: command completed sense data reported, may occur for successful command */ }; -#endif /* Get sense key string or NULL if not available */ const char * scsi_sense_key_string(unsigned char key) { -#ifdef CONFIG_SCSI_CONSTANTS if (key <= 0xE) return snstext[key]; -#endif return NULL; } EXPORT_SYMBOL(scsi_sense_key_string); @@ -1223,7 +1195,6 @@ EXPORT_SYMBOL(scsi_sense_key_string); const char * scsi_extd_sense_format(unsigned char asc, unsigned char ascq, const char **fmt) { -#ifdef CONFIG_SCSI_CONSTANTS int i; unsigned short code = ((asc << 8) | ascq); @@ -1239,15 +1210,10 @@ scsi_extd_sense_format(unsigned char asc, unsigned char ascq, const char **fmt) return additional2[i].str; } } -#else - *fmt = NULL; -#endif return NULL; } EXPORT_SYMBOL(scsi_extd_sense_format); -#ifdef CONFIG_SCSI_CONSTANTS - static const char * const hostbyte_table[]={ "DID_OK", "DID_NO_CONNECT", "DID_BUS_BUSY", "DID_TIME_OUT", "DID_BAD_TARGET", "DID_ABORT", "DID_PARITY", "DID_ERROR", "DID_RESET", "DID_BAD_INTR", @@ -1259,17 +1225,13 @@ static const char * const driverbyte_table[]={ "DRIVER_OK", "DRIVER_BUSY", "DRIVER_SOFT", "DRIVER_MEDIA", "DRIVER_ERROR", "DRIVER_INVALID", "DRIVER_TIMEOUT", "DRIVER_HARD", "DRIVER_SENSE"}; -#endif - const char *scsi_hostbyte_string(int result) { const char *hb_string = NULL; -#ifdef CONFIG_SCSI_CONSTANTS int hb = host_byte(result); if (hb < ARRAY_SIZE(hostbyte_table)) hb_string = hostbyte_table[hb]; -#endif return hb_string; } EXPORT_SYMBOL(scsi_hostbyte_string); @@ -1277,17 +1239,14 @@ EXPORT_SYMBOL(scsi_hostbyte_string); const char *scsi_driverbyte_string(int result) { const char *db_string = NULL; -#ifdef CONFIG_SCSI_CONSTANTS int db = driver_byte(result); if (db < ARRAY_SIZE(driverbyte_table)) db_string = driverbyte_table[db]; -#endif return db_string; } EXPORT_SYMBOL(scsi_driverbyte_string); -#ifdef CONFIG_SCSI_CONSTANTS #define scsi_mlreturn_name(result) { result, #result } static const struct value_name_pair scsi_mlreturn_arr[] = { scsi_mlreturn_name(NEEDS_RETRY), @@ -1300,11 +1259,9 @@ static const struct value_name_pair scsi_mlreturn_arr[] = { scsi_mlreturn_name(SCSI_RETURN_NOT_HANDLED), scsi_mlreturn_name(FAST_IO_FAIL) }; -#endif const char *scsi_mlreturn_string(int result) { -#ifdef CONFIG_SCSI_CONSTANTS const struct value_name_pair *arr = scsi_mlreturn_arr; int k; @@ -1312,7 +1269,6 @@ const char *scsi_mlreturn_string(int result) if (result == arr->value) return arr->name; } -#endif return NULL; } EXPORT_SYMBOL(scsi_mlreturn_string); diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index e999496eda3e..471ab0661696 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -47,6 +47,7 @@ #include +#include #include #include #include diff --git a/include/scsi/scsi_dbg.h b/include/scsi/scsi_dbg.h index 365b6745dc10..f8170e90b49d 100644 --- a/include/scsi/scsi_dbg.h +++ b/include/scsi/scsi_dbg.h @@ -7,7 +7,6 @@ struct scsi_sense_hdr; #define SCSI_LOG_BUFSIZE 128 -extern bool scsi_opcode_sa_name(int, int, const char **, const char **); extern void scsi_print_command(struct scsi_cmnd *); extern size_t __scsi_format_command(char *, size_t, const unsigned char *, size_t); @@ -22,11 +21,72 @@ extern void __scsi_print_sense(const struct scsi_device *, const char *name, const unsigned char *sense_buffer, int sense_len); extern void scsi_print_result(const struct scsi_cmnd *, const char *, int); -extern const char *scsi_hostbyte_string(int); -extern const char *scsi_driverbyte_string(int); -extern const char *scsi_mlreturn_string(int); + +#ifdef CONFIG_SCSI_CONSTANTS +extern bool scsi_opcode_sa_name(int, int, const char **, const char **); extern const char *scsi_sense_key_string(unsigned char); extern const char *scsi_extd_sense_format(unsigned char, unsigned char, const char **); +extern const char *scsi_mlreturn_string(int); +extern const char *scsi_hostbyte_string(int); +extern const char *scsi_driverbyte_string(int); +#else +static inline bool +scsi_opcode_sa_name(int cmd, int sa, + const char **cdb_name, const char **sa_name) +{ + *cdb_name = NULL; + switch (cmd) { + case VARIABLE_LENGTH_CMD: + case MAINTENANCE_IN: + case MAINTENANCE_OUT: + case PERSISTENT_RESERVE_IN: + case PERSISTENT_RESERVE_OUT: + case SERVICE_ACTION_IN_12: + case SERVICE_ACTION_OUT_12: + case SERVICE_ACTION_BIDIRECTIONAL: + case SERVICE_ACTION_IN_16: + case SERVICE_ACTION_OUT_16: + case EXTENDED_COPY: + case RECEIVE_COPY_RESULTS: + *sa_name = NULL; + return true; + default: + return false; + } +} + +static inline const char * +scsi_sense_key_string(unsigned char key) +{ + return NULL; +} + +static inline const char * +scsi_extd_sense_format(unsigned char asc, unsigned char ascq, const char **fmt) +{ + *fmt = NULL; + return NULL; +} + +static inline const char * +scsi_mlreturn_string(int result) +{ + return NULL; +} + +static inline const char * +scsi_hostbyte_string(int result) +{ + return NULL; +} + +static inline const char * +scsi_driverbyte_string(int result) +{ + return NULL; +} + +#endif #endif /* _SCSI_SCSI_DBG_H */ -- GitLab