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authorMarkus Armbruster <armbru@redhat.com>2013-07-26 16:44:32 +0200
committerAnthony Liguori <aliguori@us.ibm.com>2013-07-29 10:37:11 -0500
commit4f57378fe69836ee2585c4ca631ff50746940fa6 (patch)
treed66ebcdf392397eb683293d320516098d20bd4c5 /qemu-options.hx
parentf1a145e154b0a227a1e192009ca30b351de0a8ef (diff)
downloadqemu-arm-4f57378fe69836ee2585c4ca631ff50746940fa6.tar.gz
Revert "chardev: Make the name of memory device consistent"
This reverts commit 6a85e60cb994bd95d1537aafbff65816f3de4637. Commit 51767e7 "qemu-char: Add new char backend CirMemCharDriver" introduced a memory ring buffer character device driver named "memory". Commit 3949e59 "qemu-char: Saner naming of memchar stuff & doc fixes" changed the driver name to "ringbuf", along with a whole bunch of other names, with the following rationale: Naming is a mess. The code calls the device driver CirMemCharDriver, the public API calls it "memory", "memchardev", or "memchar", and the special commands are named like "memchar-FOO". "memory" is a particularly unfortunate choice, because there's another character device driver called MemoryDriver. Moreover, the device's distinctive property is that it's a ring buffer, not that's in memory. This is what we released in 1.4.0. Unfortunately, the rename missed a critical instance of "memory": the actual driver name. Thus, the new device could be used only by an entirely undocumented name. The documented name did not work. Bummer. Commit 6a85e60 fixes this by changing the documentation to match the code. It also changes some, but not all related occurences of "ringbuf" to "memory". Left alone are identifiers in C code, HMP and QMP commands. The latter are external interface, so they can't be changed. The result is an inconsistent mess. Moreover, "memory" is a rotten name. The device's distinctive property is that it's a ring buffer, not that's in memory. User's don't care whether it's in RAM, flash, or carved into chocolate tablets by Oompa Loompas. Revert the commit. Next commit will fix just the bug. Cc: qemu-stable@nongnu.org Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1374849874-25531-2-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'qemu-options.hx')
-rw-r--r--qemu-options.hx6
1 files changed, 3 insertions, 3 deletions
diff --git a/qemu-options.hx b/qemu-options.hx
index 25ecb55da4..d15338e879 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1783,7 +1783,7 @@ DEF("chardev", HAS_ARG, QEMU_OPTION_chardev,
"-chardev msmouse,id=id[,mux=on|off]\n"
"-chardev vc,id=id[[,width=width][,height=height]][[,cols=cols][,rows=rows]]\n"
" [,mux=on|off]\n"
- "-chardev memory,id=id[,size=size]\n"
+ "-chardev ringbuf,id=id[,size=size]\n"
"-chardev file,id=id,path=path[,mux=on|off]\n"
"-chardev pipe,id=id,path=path[,mux=on|off]\n"
#ifdef _WIN32
@@ -1821,7 +1821,7 @@ Backend is one of:
@option{udp},
@option{msmouse},
@option{vc},
-@option{memory},
+@option{ringbuf},
@option{file},
@option{pipe},
@option{console},
@@ -1930,7 +1930,7 @@ the console, in pixels.
@option{cols} and @option{rows} specify that the console be sized to fit a text
console with the given dimensions.
-@item -chardev memory ,id=@var{id} [,size=@var{size}]
+@item -chardev ringbuf ,id=@var{id} [,size=@var{size}]
Create a ring buffer with fixed size @option{size}.
@var{size} must be a power of two, and defaults to @code{64K}).