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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2016-04-20 00:32:15 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2016-04-20 00:32:15 +0200 |
| commit | 675fd4eecd75a7156c83bb814ecfdbbcfbf27ea1 (patch) | |
| tree | ca1ef6507b938fe491bdf51a2fe6137de52d0f4c /NEWS | |
| parent | c908225cb5def2c6df3cf889ca458db8b633d395 (diff) | |
Add kernel profiling through sampling
* NEWS: Advertise feature.
* configfrac.ac (--enable-kernsample): Add option.
* kern/pc_sample.h (take_pc_sample): Add usermode and pc parameter.
(take_pc_sample_macro): Take usermode and pc parameters, pass as such to
take_pc_sample.
* kern/pc_sample.c (take_pc_sample): Use pc parameter when usermode is 1.
* kern/mach_clock.c (clock_interrupt): Add pc parameter. Pass usermode and
pc to take_pc_sample_macro call.
* i386/i386/hardclock.c (hardclock): Pass regs->eip to clock_interrupt call
on normal interrupts, NULL on interrupt interrupt.
* vm/vm_fault.c (vm_fault_cleanup): Set usermode to 1 and pc to NULL in
take_pc_sample_macro call.
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -14,6 +14,8 @@ heap addressing important scalability issues. A synchronization mechanism was added, similar to the Linux futexes, to allow efficient and powerful userland synchronization. + +Support for profiling kernel code from userland through sampling was added. Version 1.6 (2015-10-31) |