CVS commit: src/sys/dev/tprof

["Ryo Shimizu" <ryo%netbsd.org@localhost>]

Module Name:    src
Committed By:   ryo
Date:           Thu Dec  1 00:27:59 UTC 2022

Modified Files:
        src/sys/dev/tprof: tprof.c

Log Message:
don't call kpreempt_{disable,enable}() from an interrupt handler.

Fixed a problem in which the system would freeze if a high load (e.g., build.sh -j20)
was applied while running `tprof monitor -e LsNotHaltedCyc ...' on x86.

This almost eliminates the problem, but still is not enough. tprof_x86 uses NMI
interrupts, which are interrupted even in splhigh(), leaving the possibility of
being interrupted in the splhigh section of percpu_cpu_swap().


To generate a diff of this commit:
cvs rdiff -u -r1.17 -r1.18 src/sys/dev/tprof/tprof.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.