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3 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Zhengjun Xing
|
71c86cda75 |
perf parse-events: Remove "not supported" hybrid cache events
By default, we create two hybrid cache events, one is for cpu_core, and
another is for cpu_atom. But Some hybrid hardware cache events are only
available on one CPU PMU. For example, the 'L1-dcache-load-misses' is only
available on cpu_core, while the 'L1-icache-loads' is only available on
cpu_atom. We need to remove "not supported" hybrid cache events. By
extending is_event_supported() to global API and using it to check if the
hybrid cache events are supported before being created, we can remove the
"not supported" hybrid cache events.
Before:
# ./perf stat -e L1-dcache-load-misses,L1-icache-loads -a sleep 1
Performance counter stats for 'system wide':
52,570 cpu_core/L1-dcache-load-misses/
<not supported> cpu_atom/L1-dcache-load-misses/
<not supported> cpu_core/L1-icache-loads/
1,471,817 cpu_atom/L1-icache-loads/
1.004915229 seconds time elapsed
After:
# ./perf stat -e L1-dcache-load-misses,L1-icache-loads -a sleep 1
Performance counter stats for 'system wide':
54,510 cpu_core/L1-dcache-load-misses/
1,441,286 cpu_atom/L1-icache-loads/
1.005114281 seconds time elapsed
Fixes:
|
||
|
Zhengjun Xing
|
e28c07871c |
perf print-events: Fix "perf list" can not display the PMU prefix for some hybrid cache events
Some hybrid hardware cache events are only available on one CPU PMU. For
example, 'L1-dcache-load-misses' is only available on cpu_core.
We have supported in the perf list clearly reporting this info, the
function works fine before but recently the argument "config" in API
is_event_supported() is changed from "u64" to "unsigned int" which
caused a regression, the "perf list" then can not display the PMU prefix
for some hybrid cache events.
For the hybrid systems, the PMU type ID is stored at config[63:32],
define config to "unsigned int" will miss the PMU type ID information,
then the regression happened, the config should be defined as "u64".
Before:
# ./perf list |grep "Hardware cache event"
L1-dcache-load-misses [Hardware cache event]
L1-dcache-loads [Hardware cache event]
L1-dcache-stores [Hardware cache event]
L1-icache-load-misses [Hardware cache event]
L1-icache-loads [Hardware cache event]
LLC-load-misses [Hardware cache event]
LLC-loads [Hardware cache event]
LLC-store-misses [Hardware cache event]
LLC-stores [Hardware cache event]
branch-load-misses [Hardware cache event]
branch-loads [Hardware cache event]
dTLB-load-misses [Hardware cache event]
dTLB-loads [Hardware cache event]
dTLB-store-misses [Hardware cache event]
dTLB-stores [Hardware cache event]
iTLB-load-misses [Hardware cache event]
node-load-misses [Hardware cache event]
node-loads [Hardware cache event]
After:
# ./perf list |grep "Hardware cache event"
L1-dcache-loads [Hardware cache event]
L1-dcache-stores [Hardware cache event]
L1-icache-load-misses [Hardware cache event]
LLC-load-misses [Hardware cache event]
LLC-loads [Hardware cache event]
LLC-store-misses [Hardware cache event]
LLC-stores [Hardware cache event]
branch-load-misses [Hardware cache event]
branch-loads [Hardware cache event]
cpu_atom/L1-icache-loads/ [Hardware cache event]
cpu_core/L1-dcache-load-misses/ [Hardware cache event]
cpu_core/node-load-misses/ [Hardware cache event]
cpu_core/node-loads/ [Hardware cache event]
dTLB-load-misses [Hardware cache event]
dTLB-loads [Hardware cache event]
dTLB-store-misses [Hardware cache event]
dTLB-stores [Hardware cache event]
iTLB-load-misses [Hardware cache event]
Fixes:
|
||
|
Ian Rogers
|
9b7c7728f4 |
perf parse-events: Break out tracepoint and printing
Move print_*_events functions out of parse-events.c into a new print-events.c. Move tracepoint code into tracepoint.c or trace-event-info.c (sole user). This reduces the dependencies of parse-events.c and makes it more amenable to being a library in the future. Remove some unnecessary definitions from parse-events.h. Fix a checkpatch.pl warning on using unsigned rather than unsigned int. Fix some line length warnings too. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20220729204217.250166-3-irogers@google.com [ Add include linux/stddef.h before perf_events.h for systems where __always_inline isn't pulled in before used, such as older Alpine Linux ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |