perf/x86/ibs: Add IBS interrupt to the dynamic throttle
authorPeter Zijlstra <peterz@infradead.org>
Thu, 17 Mar 2016 14:06:58 +0000 (15:06 +0100)
committerIngo Molnar <mingo@kernel.org>
Mon, 21 Mar 2016 08:08:16 +0000 (09:08 +0100)
commitc2872d381f1ab1bc39c7f044644bf1d3da7c11dd
treed251a6b32d926af9e2db2e3417407aa09706d06b
parent5a50f52917011365a4a2c0f1d2cea0990c4465cd
perf/x86/ibs: Add IBS interrupt to the dynamic throttle

Interrupt throttling is normally only done against
sysctl_perf_event_sample_rate. This means that if that number is too
high (for whatever reason) you can lock up your machine.

We have, however, a dynamic throttling scheme too, but for that to
work, we need to add a callback to the interrupt handler, IBS did not
have this, so add it.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/events/amd/ibs.c