Documentation:kernel-per-CPU-kthreads.txt: Remove reference to elevator=

This argument was not being considered since blk-mq was set by default,
so removed this documentation to avoid confusion.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
.txt file is now .rst

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/Documentation/admin-guide/kernel-per-CPU-kthreads.rst b/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
index 4f18456..baeeba8 100644 (file)
--- a/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
+++ b/Documentation/admin-guide/kernel-per-CPU-kthreads.rst
@@ -274,9 +274,7 @@ To reduce its OS jitter, do any of the following:
                (based on an earlier one from Gilad Ben-Yossef) that
                reduces or even eliminates vmstat overhead for some
                workloads at https://lkml.org/lkml/2013/9/4/379.
-       e.      Boot with "elevator=noop" to avoid workqueue use by
-               the block layer.
-       f.      If running on high-end powerpc servers, build with
+       e.      If running on high-end powerpc servers, build with
                CONFIG_PPC_RTAS_DAEMON=n.  This prevents the RTAS
                daemon from running on each CPU every second or so.
                (This will require editing Kconfig files and will defeat
@@ -284,12 +282,12 @@ To reduce its OS jitter, do any of the following:
                due to the rtas_event_scan() function.
                WARNING:  Please check your CPU specifications to
                make sure that this is safe on your particular system.
-       g.      If running on Cell Processor, build your kernel with
+       f.      If running on Cell Processor, build your kernel with
                CBE_CPUFREQ_SPU_GOVERNOR=n to avoid OS jitter from
                spu_gov_work().
                WARNING:  Please check your CPU specifications to
                make sure that this is safe on your particular system.
-       h.      If running on PowerMAC, build your kernel with
+       g.      If running on PowerMAC, build your kernel with
                CONFIG_PMAC_RACKMETER=n to disable the CPU-meter,
                avoiding OS jitter from rackmeter_do_timer().