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.