CVS log for src/sys/kern/subr_lwp_specificdata.c

Up to [cvs.NetBSD.org] / src / sys / kern

Request diff between arbitrary revisions

Default branch: MAIN
Current tag: MAIN

Revision 1.4 / (download) - annotate - [select for diffs], Fri May 17 03:34:26 2019 UTC (4 years, 11 months ago) by ozaki-r
Branch: MAIN
CVS Tags: thorpej-ifq-base, thorpej-ifq, thorpej-i2c-spi-conf2-base, thorpej-i2c-spi-conf2, thorpej-i2c-spi-conf-base, thorpej-i2c-spi-conf, thorpej-futex2-base, thorpej-futex2, thorpej-futex-base, thorpej-futex, thorpej-cfargs2-base, thorpej-cfargs2, thorpej-cfargs-base, thorpej-cfargs, thorpej-altq-separation-base, thorpej-altq-separation, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, netbsd-9-base, netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-10-base, netbsd-10-0-RELEASE, netbsd-10-0-RC6, netbsd-10-0-RC5, netbsd-10-0-RC4, netbsd-10-0-RC3, netbsd-10-0-RC2, netbsd-10-0-RC1, netbsd-10, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x, bouyer-xenpvh-base2, bouyer-xenpvh-base1, bouyer-xenpvh-base, bouyer-xenpvh, bouyer-sunxi-drm-base, bouyer-sunxi-drm, ad-namecache-base3, ad-namecache-base2, ad-namecache-base1, ad-namecache-base, ad-namecache, HEAD
Changes since 1.3: +10 -2 lines
Diff to previous 1.3 (colored) to selected 1.2 (colored)

Implement an aggressive psref leak detector

It is yet another psref leak detector that enables to tell where a leak occurs
while a simpler version that is already committed just tells an occurrence of a
leak.

Investigating of psref leaks is hard because once a leak occurs a percpu list of
psref that tracks references can be corrupted.  A reference to a tracking object
is memorized in the list via an intermediate object (struct psref) that is
normally allocated on a stack of a thread.  Thus, the intermediate object can be
overwritten on a leak resulting in corruption of the list.

The tracker makes a shadow entry to an intermediate object and stores some hints
into it (currently it's a caller address of psref_acquire).  We can detect a
leak by checking the entries on certain points where any references should be
released such as the return point of syscalls and the end of each softint
handler.

The feature is expensive and enabled only if the kernel is built with
PSREF_DEBUG.

Proposed on tech-kern

Mark a diagnostic-only variable

void police!

Revision 1.1 / (download) - annotate - [select for diffs], Mon Apr 12 22:15:31 2010 UTC (14 years ago) by pooka
Branch: MAIN
Diff to selected 1.2 (colored)

Separate lwp specificdata data structure management from lwp cpu/vm
management.

No functional change.

(specificdata routines went from kern_lwp.c to subr_lwp_specificdata.c)

This form allows you to request diff's between any two revisions of a file. You may select a symbolic revision name using the selection box or you may type in a numeric name using the type-in text box.

Diffs between
and

Preferred Diff type:
View only Branch:
Sort log by:

CVSweb <webmaster@jp.NetBSD.org>