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Commit 9b28829d authored by Vineet Gupta's avatar Vineet Gupta
Browse files

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: default avatarPeter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: default avatarAlexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent e525c37f
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+17 −0
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* 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";
};
+1 −1
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@@ -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

+4 −1
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@@ -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 */

+2 −1
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@@ -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,