src-test2/sys/cddl/dev/dtmalloc, branch masterFreeBSD source treehttps://cgit-dev.freebsd.org/src-test2/atom?h=master2020-11-06T21:33:59Zmalloc: move malloc_type_internal into malloc_type2020-11-06T21:33:59ZMateusz Guzikmjg@FreeBSD.org2020-11-06T21:33:59Zurn:sha1:bdcc2226441ed191f614ed854f6ea7cb06986cd2
According to code comments the original motivation was to allow for
malloc_type_internal changes without ABI breakage. This can be trivially
accomplished by providing spare fields and versioning the struct, as
implemented in the patch below.
The upshots are one less memory indirection on each alloc and disappearance
of mt_zone.
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D27104
dtrace: depessimize dtmalloc when dtrace is active2018-04-24T01:06:20ZMateusz Guzikmjg@FreeBSD.org2018-04-24T01:06:20Zurn:sha1:7cd794214ad9572dc805fcda4bf78ea5bd3c89c8
Each malloc/free was testing dtrace_malloc_enabled and forcing
extra reads from the malloc type struct to see if perhaps a
dtmalloc probe was on.
Treat it like lockstat and sdt: have a global bolean.
Use C99 initializers for DTrace provider methods.2017-09-27T17:46:38ZMark Johnstonmarkj@FreeBSD.org2017-09-27T17:46:38Zurn:sha1:47f11baacabb066fb98fb14c7c78acaf3e8aac32
This makes the definitions easier to read and more cscope-friendly.
MFC after: 1 week
The dtmalloc provider uses the short description of a malloc type as the2013-06-28T03:14:40ZMark Johnstonmarkj@FreeBSD.org2013-06-28T03:14:40Zurn:sha1:837610eb0416421bd330e43c1edef8eda61018ef
function name of its corresponding DTrace probes. These descriptions may
contain whitespace, but probe names cannot, so just replace any whitespace
with underscores when creating probes.
MFC after: 1 week
Custom DTrace kernel module files plus FreeBSD-specific DTrace providers.2008-05-23T05:59:42ZJohn Birrelljb@FreeBSD.org2008-05-23T05:59:42Zurn:sha1:91eaf3e1831d805c9cffd85818a70213d9007e07