Andrew Turner 7bc7e3cd65 Don't panic in hwpmc when stopping sampling. ... When hwpmc stops sampling it will set the pm_state to something other than PMC_STATE_RUNNING. This means the following sequence can happen: CPU 0: Enter the interrupt handler CPU 0: Set the thread TDP_CALLCHAIN pflag CPU 1: Stop sampling CPU 0: Call pmc_process_samples, sampling is stopped so clears ps_nsamples CPU 0: Finishes interrupt processing with the TDP_CALLCHAIN flag set CPU 0: Call pmc_capture_user_callchain to capture the user call chain CPU 0: Find all the pmc sample are free so no call chains need to be captured CPU 0: KASSERT because of this This fixes the issue by checking if any of the samples have been stopped and including this in te KASSERT. PR: 204273 Reviewed by: bz, gnn Obtained from: ABT Systems Ltd Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D6581		2016-05-28 13:05:39 +00:00
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hwpmc_amd.c	sys: use our nitems() macro when param.h is available.	2016-04-21 19:40:10 +00:00
hwpmc_amd.h
hwpmc_arm.c
hwpmc_arm64.c
hwpmc_arm64.h
hwpmc_arm64_md.c
hwpmc_armv7.c
hwpmc_armv7.h
hwpmc_core.c	Remove slightly used const values that can be replaced with nitems().	2016-04-21 15:38:28 +00:00
hwpmc_core.h	sys/dev: minor spelling fixes.	2016-05-03 03:41:25 +00:00
hwpmc_e500.c	Remove unused e500_event_codes_size.	2016-04-20 20:37:58 +00:00
hwpmc_intel.c	Add support for Intel Skylake and Intel Broadwell PMC's. The Broadwell PMC's have been	2015-11-30 17:35:49 +00:00
hwpmc_logging.c	Fix the tunable in logging so that if its pre-11 we have the proper	2015-12-09 22:46:40 +00:00
hwpmc_mips.c	Cleanup unnecessary semicolons from the kernel.	2016-04-10 23:07:00 +00:00
hwpmc_mips24k.c	sys: use our nitems() macro when param.h is available.	2016-04-21 19:40:10 +00:00
hwpmc_mips74k.c	sys: use our nitems() macro when param.h is available.	2016-04-21 19:40:10 +00:00
hwpmc_mod.c	Don't panic in hwpmc when stopping sampling.	2016-05-28 13:05:39 +00:00
hwpmc_mpc7xxx.c	Remove slightly used const values that can be replaced with nitems().	2016-04-21 15:38:28 +00:00
hwpmc_octeon.c	sys: use our nitems() macro when param.h is available.	2016-04-21 19:40:10 +00:00
hwpmc_pentium.c
hwpmc_pentium.h
hwpmc_piv.c	Remove misc NULL checks after M_WAITOK allocations.	2016-05-10 10:26:07 +00:00
hwpmc_piv.h
hwpmc_powerpc.c	e5500 HWPMC is identical to e500mc, so add support check for it.	2016-01-17 00:14:22 +00:00
hwpmc_powerpc.h
hwpmc_ppc970.c
hwpmc_ppro.c
hwpmc_ppro.h
hwpmc_riscv.h	Welcome the RISC-V 64-bit kernel.	2016-01-29 15:12:31 +00:00
hwpmc_soft.c
hwpmc_soft.h
hwpmc_sparc64.c
hwpmc_tsc.c
hwpmc_tsc.h
hwpmc_uncore.c	Remove slightly used const values that can be replaced with nitems().	2016-04-21 15:38:28 +00:00
hwpmc_uncore.h
hwpmc_x86.c
hwpmc_xscale.c	Remove slightly used const values that can be replaced with nitems().	2016-04-21 15:38:28 +00:00
hwpmc_xscale.h
pmc_events.h	sys/dev: minor spelling fixes.	2016-05-03 03:41:25 +00:00