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author | Alexey Brodkin <Alexey.Brodkin@synopsys.com> | 2021-11-29 12:37:07 -0800 |
---|---|---|
committer | Vineet Gupta <vineetg@rivosinc.com> | 2021-12-28 19:48:49 -0800 |
commit | ca295ffb9102c8cf619e2a38d5383bf7c08ceb62 (patch) | |
tree | ca7e22ca6bb28d0885b171217c6b263f7898f5c6 /arch/arc | |
parent | 1b2a62becacef79c2340ba39f662cfc313b72fb6 (diff) | |
download | linux-ca295ffb9102c8cf619e2a38d5383bf7c08ceb62.tar.bz2 |
arc: perf: Move static structs to where they're really used
It is all well described by Stephen Rothwell who initially spotted that:
----------------------------->8----------------------------
After merging the origin tree, today's linux-next build (arc
haps_hs_smp_defconfig+kselftest) produced these warnings:
arch/arc/include/asm/perf_event.h:126:27: warning: 'arc_pmu_cache_map' defined but not used [-Wunused-const-variable=]
arch/arc/include/asm/perf_event.h:91:27: warning: 'arc_pmu_ev_hw_map' defined but not used [-Wunused-const-variable=]
Introduced by commit 0dd450fe13da ("ARC: Add perf support for ARC700 cores")
The 2 static arrays should be moved into arch/arc/kernel/perf_event.c
(the only place that uses them). We get the warning because perf_event.h
is also included by arch/arc/kernel/unaligned.c.
----------------------------->8----------------------------
Could be easily reproduced by running make with "W=1" on any up-to-date
sources, when extra warnings get enabled (in particular
"-Wunused-const-variable"), otherwise disabled by default in the top-level
Makefile as "These warnings generated too much noise in a regular build".
Cc: Mischa Jonker <mjonker@synopsys.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@kernel.org>
Diffstat (limited to 'arch/arc')
-rw-r--r-- | arch/arc/include/asm/perf_event.h | 162 | ||||
-rw-r--r-- | arch/arc/kernel/perf_event.c | 162 |
2 files changed, 162 insertions, 162 deletions
diff --git a/arch/arc/include/asm/perf_event.h b/arch/arc/include/asm/perf_event.h index e1971d34ef30..4c919c0f4b30 100644 --- a/arch/arc/include/asm/perf_event.h +++ b/arch/arc/include/asm/perf_event.h @@ -63,166 +63,4 @@ struct arc_reg_cc_build { #define PERF_COUNT_ARC_HW_MAX (PERF_COUNT_HW_MAX + 8) -/* - * Some ARC pct quirks: - * - * PERF_COUNT_HW_STALLED_CYCLES_BACKEND - * PERF_COUNT_HW_STALLED_CYCLES_FRONTEND - * The ARC 700 can either measure stalls per pipeline stage, or all stalls - * combined; for now we assign all stalls to STALLED_CYCLES_BACKEND - * and all pipeline flushes (e.g. caused by mispredicts, etc.) to - * STALLED_CYCLES_FRONTEND. - * - * We could start multiple performance counters and combine everything - * afterwards, but that makes it complicated. - * - * Note that I$ cache misses aren't counted by either of the two! - */ - -/* - * ARC PCT has hardware conditions with fixed "names" but variable "indexes" - * (based on a specific RTL build) - * Below is the static map between perf generic/arc specific event_id and - * h/w condition names. - * At the time of probe, we loop thru each index and find it's name to - * complete the mapping of perf event_id to h/w index as latter is needed - * to program the counter really - */ -static const char * const arc_pmu_ev_hw_map[] = { - /* count cycles */ - [PERF_COUNT_HW_CPU_CYCLES] = "crun", - [PERF_COUNT_HW_REF_CPU_CYCLES] = "crun", - [PERF_COUNT_HW_BUS_CYCLES] = "crun", - - [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = "bflush", - [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = "bstall", - - /* counts condition */ - [PERF_COUNT_HW_INSTRUCTIONS] = "iall", - /* All jump instructions that are taken */ - [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = "ijmptak", -#ifdef CONFIG_ISA_ARCV2 - [PERF_COUNT_HW_BRANCH_MISSES] = "bpmp", -#else - [PERF_COUNT_ARC_BPOK] = "bpok", /* NP-NT, PT-T, PNT-NT */ - [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 */ - - [PERF_COUNT_ARC_DCLM] = "dclm", /* D-cache Load Miss */ - [PERF_COUNT_ARC_DCSM] = "dcsm", /* D-cache Store Miss */ - [PERF_COUNT_ARC_ICM] = "icm", /* I-cache Miss */ - [PERF_COUNT_ARC_EDTLB] = "edtlb", /* D-TLB Miss */ - [PERF_COUNT_ARC_EITLB] = "eitlb", /* I-TLB Miss */ - - [PERF_COUNT_HW_CACHE_REFERENCES] = "imemrdc", /* Instr: mem read cached */ - [PERF_COUNT_HW_CACHE_MISSES] = "dclm", /* D-cache Load Miss */ -}; - -#define C(_x) PERF_COUNT_HW_CACHE_##_x -#define CACHE_OP_UNSUPPORTED 0xffff - -static const unsigned int arc_pmu_cache_map[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { - [C(L1D)] = { - [C(OP_READ)] = { - [C(RESULT_ACCESS)] = PERF_COUNT_ARC_LDC, - [C(RESULT_MISS)] = PERF_COUNT_ARC_DCLM, - }, - [C(OP_WRITE)] = { - [C(RESULT_ACCESS)] = PERF_COUNT_ARC_STC, - [C(RESULT_MISS)] = PERF_COUNT_ARC_DCSM, - }, - [C(OP_PREFETCH)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - }, - [C(L1I)] = { - [C(OP_READ)] = { - [C(RESULT_ACCESS)] = PERF_COUNT_HW_INSTRUCTIONS, - [C(RESULT_MISS)] = PERF_COUNT_ARC_ICM, - }, - [C(OP_WRITE)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - [C(OP_PREFETCH)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - }, - [C(LL)] = { - [C(OP_READ)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - [C(OP_WRITE)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - [C(OP_PREFETCH)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - }, - [C(DTLB)] = { - [C(OP_READ)] = { - [C(RESULT_ACCESS)] = PERF_COUNT_ARC_LDC, - [C(RESULT_MISS)] = PERF_COUNT_ARC_EDTLB, - }, - /* DTLB LD/ST Miss not segregated by h/w*/ - [C(OP_WRITE)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - [C(OP_PREFETCH)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - }, - [C(ITLB)] = { - [C(OP_READ)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = PERF_COUNT_ARC_EITLB, - }, - [C(OP_WRITE)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - [C(OP_PREFETCH)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - }, - [C(BPU)] = { - [C(OP_READ)] = { - [C(RESULT_ACCESS)] = PERF_COUNT_HW_BRANCH_INSTRUCTIONS, - [C(RESULT_MISS)] = PERF_COUNT_HW_BRANCH_MISSES, - }, - [C(OP_WRITE)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - [C(OP_PREFETCH)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - }, - [C(NODE)] = { - [C(OP_READ)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - [C(OP_WRITE)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - [C(OP_PREFETCH)] = { - [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, - [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, - }, - }, -}; - #endif /* __ASM_PERF_EVENT_H */ diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c index 35e5fe708840..adff957962da 100644 --- a/arch/arc/kernel/perf_event.c +++ b/arch/arc/kernel/perf_event.c @@ -17,6 +17,168 @@ /* HW holds 8 symbols + one for null terminator */ #define ARCPMU_EVENT_NAME_LEN 9 +/* + * Some ARC pct quirks: + * + * PERF_COUNT_HW_STALLED_CYCLES_BACKEND + * PERF_COUNT_HW_STALLED_CYCLES_FRONTEND + * The ARC 700 can either measure stalls per pipeline stage, or all stalls + * combined; for now we assign all stalls to STALLED_CYCLES_BACKEND + * and all pipeline flushes (e.g. caused by mispredicts, etc.) to + * STALLED_CYCLES_FRONTEND. + * + * We could start multiple performance counters and combine everything + * afterwards, but that makes it complicated. + * + * Note that I$ cache misses aren't counted by either of the two! + */ + +/* + * ARC PCT has hardware conditions with fixed "names" but variable "indexes" + * (based on a specific RTL build) + * Below is the static map between perf generic/arc specific event_id and + * h/w condition names. + * At the time of probe, we loop thru each index and find it's name to + * complete the mapping of perf event_id to h/w index as latter is needed + * to program the counter really + */ +static const char * const arc_pmu_ev_hw_map[] = { + /* count cycles */ + [PERF_COUNT_HW_CPU_CYCLES] = "crun", + [PERF_COUNT_HW_REF_CPU_CYCLES] = "crun", + [PERF_COUNT_HW_BUS_CYCLES] = "crun", + + [PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] = "bflush", + [PERF_COUNT_HW_STALLED_CYCLES_BACKEND] = "bstall", + + /* counts condition */ + [PERF_COUNT_HW_INSTRUCTIONS] = "iall", + /* All jump instructions that are taken */ + [PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = "ijmptak", +#ifdef CONFIG_ISA_ARCV2 + [PERF_COUNT_HW_BRANCH_MISSES] = "bpmp", +#else + [PERF_COUNT_ARC_BPOK] = "bpok", /* NP-NT, PT-T, PNT-NT */ + [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 */ + + [PERF_COUNT_ARC_DCLM] = "dclm", /* D-cache Load Miss */ + [PERF_COUNT_ARC_DCSM] = "dcsm", /* D-cache Store Miss */ + [PERF_COUNT_ARC_ICM] = "icm", /* I-cache Miss */ + [PERF_COUNT_ARC_EDTLB] = "edtlb", /* D-TLB Miss */ + [PERF_COUNT_ARC_EITLB] = "eitlb", /* I-TLB Miss */ + + [PERF_COUNT_HW_CACHE_REFERENCES] = "imemrdc", /* Instr: mem read cached */ + [PERF_COUNT_HW_CACHE_MISSES] = "dclm", /* D-cache Load Miss */ +}; + +#define C(_x) PERF_COUNT_HW_CACHE_##_x +#define CACHE_OP_UNSUPPORTED 0xffff + +static const unsigned int arc_pmu_cache_map[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { + [C(L1D)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = PERF_COUNT_ARC_LDC, + [C(RESULT_MISS)] = PERF_COUNT_ARC_DCLM, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = PERF_COUNT_ARC_STC, + [C(RESULT_MISS)] = PERF_COUNT_ARC_DCSM, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + }, + [C(L1I)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = PERF_COUNT_HW_INSTRUCTIONS, + [C(RESULT_MISS)] = PERF_COUNT_ARC_ICM, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + }, + [C(LL)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + }, + [C(DTLB)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = PERF_COUNT_ARC_LDC, + [C(RESULT_MISS)] = PERF_COUNT_ARC_EDTLB, + }, + /* DTLB LD/ST Miss not segregated by h/w*/ + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + }, + [C(ITLB)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = PERF_COUNT_ARC_EITLB, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + }, + [C(BPU)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = PERF_COUNT_HW_BRANCH_INSTRUCTIONS, + [C(RESULT_MISS)] = PERF_COUNT_HW_BRANCH_MISSES, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + }, + [C(NODE)] = { + [C(OP_READ)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_WRITE)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + [C(OP_PREFETCH)] = { + [C(RESULT_ACCESS)] = CACHE_OP_UNSUPPORTED, + [C(RESULT_MISS)] = CACHE_OP_UNSUPPORTED, + }, + }, +}; + enum arc_pmu_attr_groups { ARCPMU_ATTR_GR_EVENTS, ARCPMU_ATTR_GR_FORMATS, |