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Søren Sandmann Pedersen
2005-07-08 02:08:02 +00:00
parent 8e4696a4a1
commit 3459f764d7
1 changed files with 21 additions and 9 deletions
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@ -4,6 +4,9 @@ Before 1.0:
- Find out what distributions it actually works on - Find out what distributions it actually works on
(ask for sucess/failure-stories in 0.9.x releases) (ask for sucess/failure-stories in 0.9.x releases)
- Create RPM package? See fedora package list for information
about how to package kernel modules.
- After 1.0: - After 1.0:
- Announce on news.gnome.org - Announce on news.gnome.org
- Announce on Gnomefiles - Announce on Gnomefiles
@ -16,30 +19,41 @@ Before 1.2:
* See if the auto-expanding can be made more intelligent * See if the auto-expanding can be made more intelligent
* Send entire stack to user space, then do stackwalking there * Send entire stack to user space, then do stackwalking there. That would
allow us to do more complex algorithms, like dwarf, in userspace. Though
we'd lose the ability to do non-racy file naming. We could pass a list
of the process mappings with each stack though.
* If interrupt happens in kernel mode, send both * If interrupt happens in kernel mode, send both
kernel stack and user space stack, have userspace stitch them kernel stack and user space stack, have userspace stitch them
together. together. (User space stack must probably be done in a thread - kernel
stack must probably be taken in the interrupt itself?
- Why this difference? The page tables should still be loaded. Is it
because pages_present() doesn't work? No, turning it off doesn't help.
* Correctness * Correctness
- When the module is unloaded, kill all processes blocking in read - When the module is unloaded, kill all processes blocking in read
- or block unloading until all processes have exited - or block unloading until all processes have exited
Unfortunately this is basically impossible to do with a /proc Unfortunately this is basically impossible to do with a /proc
file (no open() notification). So, for 1.0 this will have to be file (no open() notification). So, for 1.0 this will have to be
a dont-do-that-then. For 1.2, we should do it with a sysfs a dont-do-that-then. For 1.2, we should do it with a sysfs and
file instead. kobject instead.
- When the module is unloaded, can we somehow *guarantee* that no - When the module is unloaded, can we somehow *guarantee* that no
kernel thread is active? Doesn't look like it; however we can kernel thread is active? Doesn't look like it; however we can
get very close by decreasing a ref count just before returning get very close by decreasing a ref count just before returning
from the module. (There may still be return instructions etc. from the module. (There may still be return instructions etc.
that will get run). that will get run). This may not be an issue with the timer
based scanning we are using currently.
- See if there is a way to make it distcheck - See if there is a way to make it distcheck
- grep FIXME - not10 - grep FIXME - not10
- translation should be hooked up - translation should be hooked up
- Consider adding "at least 5% inclusive cost" filter - Consider adding "at least 5% inclusive cost" filter
- Ability to generate "screenshots" suitable for mail/blog/etc - Ability to generate "screenshots" suitable for mail/blog/etc
UI: "generate screenshot" menu item pops up a window with UI: "generate screenshot" menu item pops up a window with
a text area + a radio buttons "text/html". When you flick a text area + a radio buttons "text/html". When you flick
@ -52,9 +66,7 @@ Before 1.2:
- Make the process waiting in poll() responsible for extracting - Make the process waiting in poll() responsible for extracting
the backtrace. Give a copy of the entire stack rather than doing the backtrace. Give a copy of the entire stack rather than doing
the walk inside the kernel. That would allow us to do more complex the walk inside the kernel.
algorithms in userspace. Though we'd lose the ability to do non-racy
file naming. We could pass a list of the process mappings though.
New model: New model:
- Two arrays, - Two arrays,
@ -174,7 +186,7 @@ http://www.linuxbase.org/spec/booksets/LSB-Embedded/LSB-Embedded/ehframe.html
for each leaf for each leaf
add trace to tree (leaf, interesting) add trace to tree (leaf, interesting)
- Consider adding KDE-style nested callgraph view - Consider adding KDE-style nested callgraph view
- probably need a dependency on gtk+ 2.8 for this. - probably need a dependency on gtk+ 2.8 (cairo) for this.
- Add support for line numbers within functions - Add support for line numbers within functions
- Possibly a special "view details" mode, assuming that - Possibly a special "view details" mode, assuming that
the details of a function are not that interesting the details of a function are not that interesting