ARCv2: perf: Finally introduce HS perf unit

With all features in place, the ARC HS pct block can now be effectively
allowed to be probed/used

Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2014-11-18 17:36:11 +05:30
parent e525c37f84
commit 9b28829d6d
4 changed files with 24 additions and 3 deletions

View File

@ -0,0 +1,17 @@
* ARC HS Performance Counters
The ARC HS can be configured with a pipeline performance monitor for counting
CPU and cache events like cache misses and hits. Like conventional PCT there
are 100+ hardware conditions dynamically mapped to upto 32 counters.
It also supports overflow interrupts.
Required properties:
- compatible : should contain
"snps,archs-pct"
Example:
pmu {
compatible = "snps,archs-pct";
};

View File

@ -9874,7 +9874,7 @@ SYNOPSYS ARC ARCHITECTURE
M: Vineet Gupta <vgupta@synopsys.com>
S: Supported
F: arch/arc/
F: Documentation/devicetree/bindings/arc/
F: Documentation/devicetree/bindings/arc/*
F: drivers/tty/serial/arc_uart.c
T: git git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git

View File

@ -105,8 +105,11 @@ static const char * const arc_pmu_ev_hw_map[] = {
[PERF_COUNT_HW_INSTRUCTIONS] = "iall",
[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = "ijmp", /* Excludes ZOL jumps */
[PERF_COUNT_ARC_BPOK] = "bpok", /* NP-NT, PT-T, PNT-NT */
#ifdef CONFIG_ISA_ARCV2
[PERF_COUNT_HW_BRANCH_MISSES] = "bpmp",
#else
[PERF_COUNT_HW_BRANCH_MISSES] = "bpfail", /* NP-T, PT-NT, PNT-T */
#endif
[PERF_COUNT_ARC_LDC] = "imemrdc", /* Instr: mem read cached */
[PERF_COUNT_ARC_STC] = "imemwrc", /* Instr: mem write cached */

View File

@ -551,6 +551,7 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
#ifdef CONFIG_OF
static const struct of_device_id arc_pmu_match[] = {
{ .compatible = "snps,arc700-pct" },
{ .compatible = "snps,archs-pct" },
{},
};
MODULE_DEVICE_TABLE(of, arc_pmu_match);
@ -558,7 +559,7 @@ MODULE_DEVICE_TABLE(of, arc_pmu_match);
static struct platform_driver arc_pmu_driver = {
.driver = {
.name = "arc700-pct",
.name = "arc-pct",
.of_match_table = of_match_ptr(arc_pmu_match),
},
.probe = arc_pmu_device_probe,