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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6b099d9b04
Currently, the intel_bts driver relies on the DS area allocated by the x86_pmu code in its event_init() path, which is a bug: creating a BTS event while no x86_pmu events are present results in a NULL pointer dereference. The same DS area is also used by PEBS sampling, which makes it quite a bit trickier to have a separate one for intel_bts' purposes. This patch makes intel_bts driver use the same DS allocation and reference counting code as x86_pmu to make sure it is always present when either intel_bts or x86_pmu need it. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: acme@infradead.org Cc: adrian.hunter@intel.com Link: http://lkml.kernel.org/r/1434024837-9916-2-git-send-email-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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| .. | ||
| mcheck | ||
| microcode | ||
| mtrr | ||
| .gitignore | ||
| amd.c | ||
| bugs_64.c | ||
| bugs.c | ||
| centaur.c | ||
| common.c | ||
| cpu.h | ||
| cyrix.c | ||
| hypervisor.c | ||
| intel_cacheinfo.c | ||
| intel_pt.h | ||
| intel.c | ||
| Makefile | ||
| match.c | ||
| mkcapflags.sh | ||
| mshyperv.c | ||
| perf_event_amd_ibs.c | ||
| perf_event_amd_iommu.c | ||
| perf_event_amd_iommu.h | ||
| perf_event_amd_uncore.c | ||
| perf_event_amd.c | ||
| perf_event_intel_bts.c | ||
| perf_event_intel_cqm.c | ||
| perf_event_intel_ds.c | ||
| perf_event_intel_lbr.c | ||
| perf_event_intel_pt.c | ||
| perf_event_intel_rapl.c | ||
| perf_event_intel_uncore_nhmex.c | ||
| perf_event_intel_uncore_snb.c | ||
| perf_event_intel_uncore_snbep.c | ||
| perf_event_intel_uncore.c | ||
| perf_event_intel_uncore.h | ||
| perf_event_intel.c | ||
| perf_event_knc.c | ||
| perf_event_p4.c | ||
| perf_event_p6.c | ||
| perf_event.c | ||
| perf_event.h | ||
| perfctr-watchdog.c | ||
| powerflags.c | ||
| proc.c | ||
| rdrand.c | ||
| scattered.c | ||
| topology.c | ||
| transmeta.c | ||
| umc.c | ||
| vmware.c | ||