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authorLinus Torvalds <torvalds@linux-foundation.org>2021-11-01 13:12:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-11-01 13:12:15 -0700
commit91e1c99e175ae6bb6be765c6fcd40e869f8f6aee (patch)
treed3dfcf33345ee7dcad4b1e6d215f581eea5fd2ee /kernel/events
parent5a47ebe98e6e5113ea8213d019a794d5851fbd46 (diff)
parent2de71ee153efa93099d2ab864acffeec70a8dcd5 (diff)
Merge tag 'perf-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Thomas Gleixner: "Core: - Allow ftrace to instrument parts of the perf core code - Add a new mem_hops field to perf_mem_data_src which allows to represent intra-node/package or inter-node/off-package details to prepare for next generation systems which have more hieararchy within the node/pacakge level. Tools: - Update for the new mem_hops field in perf_mem_data_src Arch: - A set of constraints fixes for the Intel uncore PMU - The usual set of small fixes and improvements for x86 and PPC" * tag 'perf-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel: Fix ICL/SPR INST_RETIRED.PREC_DIST encodings powerpc/perf: Fix data source encodings for L2.1 and L3.1 accesses tools/perf: Add mem_hops field in perf_mem_data_src structure perf: Add mem_hops field in perf_mem_data_src structure perf: Add comment about current state of PERF_MEM_LVL_* namespace and remove an extra line perf/core: Allow ftrace for functions in kernel/event/core.c perf/x86: Add new event for AUX output counter index perf/x86: Add compiler barrier after updating BTS perf/x86/intel/uncore: Fix Intel SPR M3UPI event constraints perf/x86/intel/uncore: Fix Intel SPR M2PCIE event constraints perf/x86/intel/uncore: Fix Intel SPR IIO event constraints perf/x86/intel/uncore: Fix Intel SPR CHA event constraints perf/x86/intel/uncore: Fix Intel ICX IIO event constraints perf/x86/intel/uncore: Fix invalid unit check perf/x86/intel/uncore: Support extra IMC channel on Ice Lake server
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/Makefile5
-rw-r--r--kernel/events/core.c30
2 files changed, 30 insertions, 5 deletions
diff --git a/kernel/events/Makefile b/kernel/events/Makefile
index 3c022e33c109..8591c180b52b 100644
--- a/kernel/events/Makefile
+++ b/kernel/events/Makefile
@@ -1,10 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
-ifdef CONFIG_FUNCTION_TRACER
-CFLAGS_REMOVE_core.o = $(CC_FLAGS_FTRACE)
-endif
-
obj-y := core.o ring_buffer.o callchain.o
obj-$(CONFIG_HAVE_HW_BREAKPOINT) += hw_breakpoint.o
obj-$(CONFIG_UPROBES) += uprobes.o
-
diff --git a/kernel/events/core.c b/kernel/events/core.c
index f23ca260307f..a89b01b7e59a 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -9099,6 +9099,36 @@ static void perf_log_itrace_start(struct perf_event *event)
perf_output_end(&handle);
}
+void perf_report_aux_output_id(struct perf_event *event, u64 hw_id)
+{
+ struct perf_output_handle handle;
+ struct perf_sample_data sample;
+ struct perf_aux_event {
+ struct perf_event_header header;
+ u64 hw_id;
+ } rec;
+ int ret;
+
+ if (event->parent)
+ event = event->parent;
+
+ rec.header.type = PERF_RECORD_AUX_OUTPUT_HW_ID;
+ rec.header.misc = 0;
+ rec.header.size = sizeof(rec);
+ rec.hw_id = hw_id;
+
+ perf_event_header__init_id(&rec.header, &sample, event);
+ ret = perf_output_begin(&handle, &sample, event, rec.header.size);
+
+ if (ret)
+ return;
+
+ perf_output_put(&handle, rec);
+ perf_event__output_id_sample(event, &handle, &sample);
+
+ perf_output_end(&handle);
+}
+
static int
__perf_event_account_interrupt(struct perf_event *event, int throttle)
{