diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-22 19:02:13 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-22 19:02:13 -0400 |
| commit | 5d4e2d08e7fdf7339f84a1c670d296a77e02f881 (patch) | |
| tree | 1c419660defa56191091dfdf50fdb57a72009173 /lib | |
| parent | fb2123fad3b499f0898835b19dbb93b18d27ee98 (diff) | |
| parent | 94ca629e40eb7e997be21d8065c25e4f3797b03f (diff) | |
Merge tag 'driver-core-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg Kroah-Hartman:
"Here's the driver core, and other driver subsystems, pull request for
the 3.5-rc1 merge window.
Outside of a few minor driver core changes, we ended up with the
following different subsystem and core changes as well, due to
interdependancies on the driver core:
- hyperv driver updates
- drivers/memory being created and some drivers moved into it
- extcon driver subsystem created out of the old Android staging
switch driver code
- dynamic debug updates
- printk rework, and /dev/kmsg changes
All of this has been tested in the linux-next releases for a few weeks
with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
Fix up conflicts in drivers/extcon/extcon-max8997.c where git noticed
that a patch to the deleted drivers/misc/max8997-muic.c driver needs to
be applied to this one.
* tag 'driver-core-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (90 commits)
uio_pdrv_genirq: get irq through platform resource if not set otherwise
memory: tegra{20,30}-mc: Remove empty *_remove()
printk() - isolate KERN_CONT users from ordinary complete lines
sysfs: get rid of some lockdep false positives
Drivers: hv: util: Properly handle version negotiations.
Drivers: hv: Get rid of an unnecessary check in vmbus_prep_negotiate_resp()
memory: tegra{20,30}-mc: Use dev_err_ratelimited()
driver core: Add dev_*_ratelimited() family
Driver Core: don't oops with unregistered driver in driver_find_device()
printk() - restore prefix/timestamp printing for multi-newline strings
printk: add stub for prepend_timestamp()
ARM: tegra30: Make MC optional in Kconfig
ARM: tegra20: Make MC optional in Kconfig
ARM: tegra30: MC: Remove unnecessary BUG*()
ARM: tegra20: MC: Remove unnecessary BUG*()
printk: correctly align __log_buf
ARM: tegra30: Add Tegra Memory Controller(MC) driver
ARM: tegra20: Add Tegra Memory Controller(MC) driver
printk() - restore timestamp printing at console output
printk() - do not merge continuation lines of different threads
...
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig | 8 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 33 | ||||
| -rw-r--r-- | lib/Makefile | 2 | ||||
| -rw-r--r-- | lib/dynamic_debug.c | 190 | ||||
| -rw-r--r-- | lib/jedec_ddr_data.c | 135 | ||||
| -rw-r--r-- | lib/kobject.c | 14 |
6 files changed, 295 insertions, 87 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index 4a8aba2e5cc0..0e25c03939e3 100644 --- a/lib/Kconfig +++ b/lib/Kconfig | |||
| @@ -353,6 +353,14 @@ config CORDIC | |||
| 353 | This option provides an implementation of the CORDIC algorithm; | 353 | This option provides an implementation of the CORDIC algorithm; |
| 354 | calculations are in fixed point. Module will be called cordic. | 354 | calculations are in fixed point. Module will be called cordic. |
| 355 | 355 | ||
| 356 | config DDR | ||
| 357 | bool "JEDEC DDR data" | ||
| 358 | help | ||
| 359 | Data from JEDEC specs for DDR SDRAM memories, | ||
| 360 | particularly the AC timing parameters and addressing | ||
| 361 | information. This data is useful for drivers handling | ||
| 362 | DDR SDRAM controllers. | ||
| 363 | |||
| 356 | config MPILIB | 364 | config MPILIB |
| 357 | tristate | 365 | tristate |
| 358 | select CLZ_TAB | 366 | select CLZ_TAB |
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 6777153f18f3..e11934177030 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug | |||
| @@ -3,12 +3,16 @@ config PRINTK_TIME | |||
| 3 | bool "Show timing information on printks" | 3 | bool "Show timing information on printks" |
| 4 | depends on PRINTK | 4 | depends on PRINTK |
| 5 | help | 5 | help |
| 6 | Selecting this option causes timing information to be | 6 | Selecting this option causes time stamps of the printk() |
| 7 | included in printk output. This allows you to measure | 7 | messages to be added to the output of the syslog() system |
| 8 | the interval between kernel operations, including bootup | 8 | call and at the console. |
| 9 | operations. This is useful for identifying long delays | 9 | |
| 10 | in kernel startup. Or add printk.time=1 at boot-time. | 10 | The timestamp is always recorded internally, and exported |
| 11 | See Documentation/kernel-parameters.txt | 11 | to /dev/kmsg. This flag just specifies if the timestamp should |
| 12 | be included, not that the timestamp is recorded. | ||
| 13 | |||
| 14 | The behavior is also controlled by the kernel command line | ||
| 15 | parameter printk.time=1. See Documentation/kernel-parameters.txt | ||
| 12 | 16 | ||
| 13 | config DEFAULT_MESSAGE_LOGLEVEL | 17 | config DEFAULT_MESSAGE_LOGLEVEL |
| 14 | int "Default message log level (1-7)" | 18 | int "Default message log level (1-7)" |
| @@ -1205,8 +1209,13 @@ config DYNAMIC_DEBUG | |||
| 1205 | otherwise be available at runtime. These messages can then be | 1209 | otherwise be available at runtime. These messages can then be |
| 1206 | enabled/disabled based on various levels of scope - per source file, | 1210 | enabled/disabled based on various levels of scope - per source file, |
| 1207 | function, module, format string, and line number. This mechanism | 1211 | function, module, format string, and line number. This mechanism |
| 1208 | implicitly enables all pr_debug() and dev_dbg() calls. The impact of | 1212 | implicitly compiles in all pr_debug() and dev_dbg() calls, which |
| 1209 | this compile option is a larger kernel text size of about 2%. | 1213 | enlarges the kernel text size by about 2%. |
| 1214 | |||
| 1215 | If a source file is compiled with DEBUG flag set, any | ||
| 1216 | pr_debug() calls in it are enabled by default, but can be | ||
| 1217 | disabled at runtime as below. Note that DEBUG flag is | ||
| 1218 | turned on by many CONFIG_*DEBUG* options. | ||
| 1210 | 1219 | ||
| 1211 | Usage: | 1220 | Usage: |
| 1212 | 1221 | ||
| @@ -1223,16 +1232,16 @@ config DYNAMIC_DEBUG | |||
| 1223 | lineno : line number of the debug statement | 1232 | lineno : line number of the debug statement |
| 1224 | module : module that contains the debug statement | 1233 | module : module that contains the debug statement |
| 1225 | function : function that contains the debug statement | 1234 | function : function that contains the debug statement |
| 1226 | flags : 'p' means the line is turned 'on' for printing | 1235 | flags : '=p' means the line is turned 'on' for printing |
| 1227 | format : the format used for the debug statement | 1236 | format : the format used for the debug statement |
| 1228 | 1237 | ||
| 1229 | From a live system: | 1238 | From a live system: |
| 1230 | 1239 | ||
| 1231 | nullarbor:~ # cat <debugfs>/dynamic_debug/control | 1240 | nullarbor:~ # cat <debugfs>/dynamic_debug/control |
| 1232 | # filename:lineno [module]function flags format | 1241 | # filename:lineno [module]function flags format |
| 1233 | fs/aio.c:222 [aio]__put_ioctx - "__put_ioctx:\040freeing\040%p\012" | 1242 | fs/aio.c:222 [aio]__put_ioctx =_ "__put_ioctx:\040freeing\040%p\012" |
| 1234 | fs/aio.c:248 [aio]ioctx_alloc - "ENOMEM:\040nr_events\040too\040high\012" | 1243 | fs/aio.c:248 [aio]ioctx_alloc =_ "ENOMEM:\040nr_events\040too\040high\012" |
| 1235 | fs/aio.c:1770 [aio]sys_io_cancel - "calling\040cancel\012" | 1244 | fs/aio.c:1770 [aio]sys_io_cancel =_ "calling\040cancel\012" |
| 1236 | 1245 | ||
| 1237 | Example usage: | 1246 | Example usage: |
| 1238 | 1247 | ||
diff --git a/lib/Makefile b/lib/Makefile index 18515f0267c4..74290c9e2864 100644 --- a/lib/Makefile +++ b/lib/Makefile | |||
| @@ -123,6 +123,8 @@ obj-$(CONFIG_SIGNATURE) += digsig.o | |||
| 123 | 123 | ||
| 124 | obj-$(CONFIG_CLZ_TAB) += clz_tab.o | 124 | obj-$(CONFIG_CLZ_TAB) += clz_tab.o |
| 125 | 125 | ||
| 126 | obj-$(CONFIG_DDR) += jedec_ddr_data.o | ||
| 127 | |||
| 126 | hostprogs-y := gen_crc32table | 128 | hostprogs-y := gen_crc32table |
| 127 | clean-files := crc32table.h | 129 | clean-files := crc32table.h |
| 128 | 130 | ||
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index 310c753cf83e..7ca29a0a3019 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c | |||
| @@ -107,20 +107,22 @@ static char *ddebug_describe_flags(struct _ddebug *dp, char *buf, | |||
| 107 | return buf; | 107 | return buf; |
| 108 | } | 108 | } |
| 109 | 109 | ||
| 110 | #define vpr_info_dq(q, msg) \ | 110 | #define vpr_info(fmt, ...) \ |
| 111 | do { \ | 111 | if (verbose) do { pr_info(fmt, ##__VA_ARGS__); } while (0) |
| 112 | if (verbose) \ | 112 | |
| 113 | /* trim last char off format print */ \ | 113 | #define vpr_info_dq(q, msg) \ |
| 114 | pr_info("%s: func=\"%s\" file=\"%s\" " \ | 114 | do { \ |
| 115 | "module=\"%s\" format=\"%.*s\" " \ | 115 | /* trim last char off format print */ \ |
| 116 | "lineno=%u-%u", \ | 116 | vpr_info("%s: func=\"%s\" file=\"%s\" " \ |
| 117 | msg, \ | 117 | "module=\"%s\" format=\"%.*s\" " \ |
| 118 | q->function ? q->function : "", \ | 118 | "lineno=%u-%u", \ |
| 119 | q->filename ? q->filename : "", \ | 119 | msg, \ |
| 120 | q->module ? q->module : "", \ | 120 | q->function ? q->function : "", \ |
| 121 | (int)(q->format ? strlen(q->format) - 1 : 0), \ | 121 | q->filename ? q->filename : "", \ |
| 122 | q->format ? q->format : "", \ | 122 | q->module ? q->module : "", \ |
| 123 | q->first_lineno, q->last_lineno); \ | 123 | (int)(q->format ? strlen(q->format) - 1 : 0), \ |
| 124 | q->format ? q->format : "", \ | ||
| 125 | q->first_lineno, q->last_lineno); \ | ||
| 124 | } while (0) | 126 | } while (0) |
| 125 | 127 | ||
| 126 | /* | 128 | /* |
| @@ -180,12 +182,11 @@ static int ddebug_change(const struct ddebug_query *query, | |||
| 180 | if (newflags == dp->flags) | 182 | if (newflags == dp->flags) |
| 181 | continue; | 183 | continue; |
| 182 | dp->flags = newflags; | 184 | dp->flags = newflags; |
| 183 | if (verbose) | 185 | vpr_info("changed %s:%d [%s]%s =%s\n", |
| 184 | pr_info("changed %s:%d [%s]%s =%s\n", | 186 | trim_prefix(dp->filename), dp->lineno, |
| 185 | trim_prefix(dp->filename), dp->lineno, | 187 | dt->mod_name, dp->function, |
| 186 | dt->mod_name, dp->function, | 188 | ddebug_describe_flags(dp, flagbuf, |
| 187 | ddebug_describe_flags(dp, flagbuf, | 189 | sizeof(flagbuf))); |
| 188 | sizeof(flagbuf))); | ||
| 189 | } | 190 | } |
| 190 | } | 191 | } |
| 191 | mutex_unlock(&ddebug_lock); | 192 | mutex_unlock(&ddebug_lock); |
| @@ -337,7 +338,7 @@ static int check_set(const char **dest, char *src, char *name) | |||
| 337 | * Returns 0 on success, <0 on error. | 338 | * Returns 0 on success, <0 on error. |
| 338 | */ | 339 | */ |
| 339 | static int ddebug_parse_query(char *words[], int nwords, | 340 | static int ddebug_parse_query(char *words[], int nwords, |
| 340 | struct ddebug_query *query) | 341 | struct ddebug_query *query, const char *modname) |
| 341 | { | 342 | { |
| 342 | unsigned int i; | 343 | unsigned int i; |
| 343 | int rc; | 344 | int rc; |
| @@ -347,6 +348,10 @@ static int ddebug_parse_query(char *words[], int nwords, | |||
| 347 | return -EINVAL; | 348 | return -EINVAL; |
| 348 | memset(query, 0, sizeof(*query)); | 349 | memset(query, 0, sizeof(*query)); |
| 349 | 350 | ||
| 351 | if (modname) | ||
| 352 | /* support $modname.dyndbg=<multiple queries> */ | ||
| 353 | query->module = modname; | ||
| 354 | |||
| 350 | for (i = 0 ; i < nwords ; i += 2) { | 355 | for (i = 0 ; i < nwords ; i += 2) { |
