[RFC] Scheduler recorder and playback

[Dmitry Antipov]

On 04/09/2012 09:24 PM, Pantelis Antoniou wrote:

> Here's a updated patch for builtin-sched.c that should fix your issues.
>
> Now when you issue list a field will show the amount of nsecs the
> task was burning cycles.
>
> It should also fix the crash you've encountered.

Thanks, I'm trying it now.

BTW, what's your compiler? I'm constantly seeing annoying but easy to fix warnings:

gcc -o builtin-sched.o -c -fno-omit-frame-pointer -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Wformat-y2k -Wshadow -Winit-self -Wpacked 
-Wredundant-decls -Wstrict-aliasing=3 -Wswitch-default -Wswitch-enum -Wno-system-headers -Wundef -Wwrite-strings -Wbad-function-cast -Wmissing-declarations -Wmissing-prototypes -Wnested-externs 
-Wold-style-definition -Wstrict-prototypes -Wdeclaration-after-statement  -fstack-protector-all -Wstack-protector -Wvolatile-register-var -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE 
-Iutil/include -Iarch/arm/include -I/util -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -DLIBELF_NO_MMAP -DNO_NEWT_SUPPORT -pthread -I/usr/include/gtk-2.0 
-I/usr/lib/arm-linux-gnueabi/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 
-I/usr/lib/arm-linux-gnueabi/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12   -DNO_LIBPERL -DNO_LIBPYTHON -DNO_STRLCPY  builtin-sched.c
builtin-sched.c: In function 'calculate_bogoloops_value':
builtin-sched.c:342:34: error: variable 'delta_diff' set but not used [-Werror=unused-but-set-variable]
builtin-sched.c: In function 'generate_spr_program':
builtin-sched.c:3293:28: error: variable 'atom_last' set but not used [-Werror=unused-but-set-variable]
cc1: all warnings being treated as errors

gcc -v ==>

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabi/4.6.1/lto-wrapper
Target: arm-linux-gnueabi
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 4.6.1-9ubuntu3' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ 
--prefix=/usr --program-suffix=-4.6 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix 
--with-gxx-include-dir=/usr/include/c++/4.6 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-plugin --enable-objc-gc 
--enable-multilib --disable-sjlj-exceptions --with-arch=armv7-a --with-float=softfp --with-fpu=vfpv3-d16 --with-mode=thumb --disable-werror --enable-checking=release --build=arm-linux-gnueabi 
--host=arm-linux-gnueabi --target=arm-linux-gnueabi
Thread model: posix
gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)

Dmitry