[PATCH v2 1/6] Documentation, arch: Remove leftovers from fscache/cachefiles histograms

[Alexandre Ghiti]

A few references to the fscache and cachefiles histograms were left in
the Documentation and some arch defconfigs: remove them since those
configs do not exist anymore.

Fixes: 6ae9bd8bb037("fscache, cachefiles: Remove the histogram stuff")
Signed-off-by: Alexandre Ghiti <alexandre.ghiti at canonical.com>
Acked-by: Arnd Bergmann <arnd at arndb.de> [arch/arm/configs]
---
 .../filesystems/caching/cachefiles.rst        | 34 -------------------
 Documentation/filesystems/caching/fscache.rst | 34 ++-----------------
 arch/arm/configs/axm55xx_defconfig            |  2 --
 3 files changed, 2 insertions(+), 68 deletions(-)

diff --git a/Documentation/filesystems/caching/cachefiles.rst b/Documentation/filesystems/caching/cachefiles.rst
index e58bc1fd312a..e59861458029 100644
--- a/Documentation/filesystems/caching/cachefiles.rst
+++ b/Documentation/filesystems/caching/cachefiles.rst
@@ -424,40 +424,6 @@ for CacheFiles to run in a context of a specific security label, or to create
 files and directories with another security label.
 
 
-Statistical Information
-=======================
-
-If FS-Cache is compiled with the following option enabled::
-
-	CONFIG_CACHEFILES_HISTOGRAM=y
-
-then it will gather certain statistics and display them through a proc file.
-
- /proc/fs/cachefiles/histogram
-
-     ::
-
-	cat /proc/fs/cachefiles/histogram
-	JIFS  SECS  LOOKUPS   MKDIRS    CREATES
-	===== ===== ========= ========= =========
-
-     This shows the breakdown of the number of times each amount of time
-     between 0 jiffies and HZ-1 jiffies a variety of tasks took to run.  The
-     columns are as follows:
-
-	=======		=======================================================
-	COLUMN		TIME MEASUREMENT
-	=======		=======================================================
-	LOOKUPS		Length of time to perform a lookup on the backing fs
-	MKDIRS		Length of time to perform a mkdir on the backing fs
-	CREATES		Length of time to perform a create on the backing fs
-	=======		=======================================================
-
-     Each row shows the number of events that took a particular range of times.
-     Each step is 1 jiffy in size.  The JIFS column indicates the particular
-     jiffy range covered, and the SECS field the equivalent number of seconds.
-
-
 Debugging
 =========
 
diff --git a/Documentation/filesystems/caching/fscache.rst b/Documentation/filesystems/caching/fscache.rst
index 70de86922b6a..66e31a6d1070 100644
--- a/Documentation/filesystems/caching/fscache.rst
+++ b/Documentation/filesystems/caching/fscache.rst
@@ -201,10 +201,9 @@ Statistical Information
 If FS-Cache is compiled with the following options enabled::
 
 	CONFIG_FSCACHE_STATS=y
-	CONFIG_FSCACHE_HISTOGRAM=y
 
-then it will gather certain statistics and display them through a number of
-proc files.
+then it will gather certain statistics and display them through the following
+proc file.
 
 /proc/fs/fscache/stats
 ----------------------
@@ -413,35 +412,6 @@ proc files.
 
 
 
-/proc/fs/fscache/histogram
---------------------------
-
-     ::
-
-	cat /proc/fs/fscache/histogram
-	JIFS  SECS  OBJ INST  OP RUNS   OBJ RUNS  RETRV DLY RETRIEVLS
-	===== ===== ========= ========= ========= ========= =========
-
-     This shows the breakdown of the number of times each amount of time
-     between 0 jiffies and HZ-1 jiffies a variety of tasks took to run.  The
-     columns are as follows:
-
-	=========	=======================================================
-	COLUMN		TIME MEASUREMENT
-	=========	=======================================================
-	OBJ INST	Length of time to instantiate an object
-	OP RUNS		Length of time a call to process an operation took
-	OBJ RUNS	Length of time a call to process an object event took
-	RETRV DLY	Time between an requesting a read and lookup completing
-	RETRIEVLS	Time between beginning and end of a retrieval
-	=========	=======================================================
-
-     Each row shows the number of events that took a particular range of times.
-     Each step is 1 jiffy in size.  The JIFS column indicates the particular
-     jiffy range covered, and the SECS field the equivalent number of seconds.
-
-
-
 Object List
 ===========
 
diff --git a/arch/arm/configs/axm55xx_defconfig b/arch/arm/configs/axm55xx_defconfig
index 46075216ee6d..b36e0b347d1f 100644
--- a/arch/arm/configs/axm55xx_defconfig
+++ b/arch/arm/configs/axm55xx_defconfig
@@ -204,11 +204,9 @@ CONFIG_FUSE_FS=y
 CONFIG_CUSE=y
 CONFIG_FSCACHE=y
 CONFIG_FSCACHE_STATS=y
-CONFIG_FSCACHE_HISTOGRAM=y
 CONFIG_FSCACHE_DEBUG=y
 CONFIG_FSCACHE_OBJECT_LIST=y
 CONFIG_CACHEFILES=y
-CONFIG_CACHEFILES_HISTOGRAM=y
 CONFIG_ISO9660_FS=y
 CONFIG_UDF_FS=y
 CONFIG_MSDOS_FS=y
-- 
2.32.0