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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-16 09:26:42 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-16 09:26:42 -0800 |
commit | de399813b521ea7e38bbfb5e5b620b5e202e5783 (patch) | |
tree | ceb8302f9d6a7a4f2e25b64c5dc42c1fb80b435b /arch/powerpc/perf/power9-pmu.c | |
parent | 57ca04ab440168e101da746ef9edd1ec583b7214 (diff) | |
parent | c6f6634721c871bfab4235e1cbcad208d3063798 (diff) | |
download | linux-de399813b521ea7e38bbfb5e5b620b5e202e5783.tar.bz2 |
Merge tag 'powerpc-4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Highlights include:
- Support for the kexec_file_load() syscall, which is a prereq for
secure and trusted boot.
- Prevent kernel execution of userspace on P9 Radix (similar to
SMEP/PXN).
- Sort the exception tables at build time, to save time at boot, and
store them as relative offsets to save space in the kernel image &
memory.
- Allow building the kernel with thin archives, which should allow us
to build an allyesconfig once some other fixes land.
- Build fixes to allow us to correctly rebuild when changing the
kernel endian from big to little or vice versa.
- Plumbing so that we can avoid doing a full mm TLB flush on P9
Radix.
- Initial stack protector support (-fstack-protector).
- Support for dumping the radix (aka. Linux) and hash page tables via
debugfs.
- Fix an oops in cxl coredump generation when cxl_get_fd() is used.
- Freescale updates from Scott: "Highlights include 8xx hugepage
support, qbman fixes/cleanup, device tree updates, and some misc
cleanup."
- Many and varied fixes and minor enhancements as always.
Thanks to:
Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Anshuman
Khandual, Anton Blanchard, Balbir Singh, Bartlomiej Zolnierkiewicz,
Christophe Jaillet, Christophe Leroy, Denis Kirjanov, Elimar
Riesebieter, Frederic Barrat, Gautham R. Shenoy, Geliang Tang, Geoff
Levand, Jack Miller, Johan Hovold, Lars-Peter Clausen, Libin,
Madhavan Srinivasan, Michael Neuling, Nathan Fontenot, Naveen N.
Rao, Nicholas Piggin, Pan Xinhui, Peter Senna Tschudin, Rashmica
Gupta, Rui Teng, Russell Currey, Scott Wood, Simon Guo, Suraj
Jitindar Singh, Thiago Jung Bauermann, Tobias Klauser, Vaibhav Jain"
[ And thanks to Michael, who took time off from a new baby to get this
pull request done. - Linus ]
* tag 'powerpc-4.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (174 commits)
powerpc/fsl/dts: add FMan node for t1042d4rdb
powerpc/fsl/dts: add sg_2500_aqr105_phy4 alias on t1024rdb
powerpc/fsl/dts: add QMan and BMan nodes on t1024
powerpc/fsl/dts: add QMan and BMan nodes on t1023
soc/fsl/qman: test: use DEFINE_SPINLOCK()
powerpc/fsl-lbc: use DEFINE_SPINLOCK()
powerpc/8xx: Implement support of hugepages
powerpc: get hugetlbpage handling more generic
powerpc: port 64 bits pgtable_cache to 32 bits
powerpc/boot: Request no dynamic linker for boot wrapper
soc/fsl/bman: Use resource_size instead of computation
soc/fsl/qe: use builtin_platform_driver
powerpc/fsl_pmc: use builtin_platform_driver
powerpc/83xx/suspend: use builtin_platform_driver
powerpc/ftrace: Fix the comments for ftrace_modify_code
powerpc/perf: macros for power9 format encoding
powerpc/perf: power9 raw event format encoding
powerpc/perf: update attribute_group data structure
powerpc/perf: factor out the event format field
powerpc/mm/iommu, vfio/spapr: Put pages on VFIO container shutdown
...
Diffstat (limited to 'arch/powerpc/perf/power9-pmu.c')
-rw-r--r-- | arch/powerpc/perf/power9-pmu.c | 114 |
1 files changed, 110 insertions, 4 deletions
diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c index 8e9a81967ff8..346010e8d463 100644 --- a/arch/powerpc/perf/power9-pmu.c +++ b/arch/powerpc/perf/power9-pmu.c @@ -16,6 +16,78 @@ #include "isa207-common.h" /* + * Raw event encoding for Power9: + * + * 60 56 52 48 44 40 36 32 + * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | + * | | [ ] [ ] [ thresh_cmp ] [ thresh_ctl ] + * | | | | | + * | | *- IFM (Linux) | thresh start/stop OR FAB match -* + * | *- BHRB (Linux) *sm + * *- EBB (Linux) + * + * 28 24 20 16 12 8 4 0 + * | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | + * [ ] [ sample ] [cache] [ pmc ] [unit ] [] m [ pmcxsel ] + * | | | | | + * | | | | *- mark + * | | *- L1/L2/L3 cache_sel | + * | | | + * | *- sampling mode for marked events *- combine + * | + * *- thresh_sel + * + * Below uses IBM bit numbering. + * + * MMCR1[x:y] = unit (PMCxUNIT) + * MMCR1[24] = pmc1combine[0] + * MMCR1[25] = pmc1combine[1] + * MMCR1[26] = pmc2combine[0] + * MMCR1[27] = pmc2combine[1] + * MMCR1[28] = pmc3combine[0] + * MMCR1[29] = pmc3combine[1] + * MMCR1[30] = pmc4combine[0] + * MMCR1[31] = pmc4combine[1] + * + * if pmc == 3 and unit == 0 and pmcxsel[0:6] == 0b0101011 + * # PM_MRK_FAB_RSP_MATCH + * MMCR1[20:27] = thresh_ctl (FAB_CRESP_MATCH / FAB_TYPE_MATCH) + * else if pmc == 4 and unit == 0xf and pmcxsel[0:6] == 0b0101001 + * # PM_MRK_FAB_RSP_MATCH_CYC + * MMCR1[20:27] = thresh_ctl (FAB_CRESP_MATCH / FAB_TYPE_MATCH) + * else + * MMCRA[48:55] = thresh_ctl (THRESH START/END) + * + * if thresh_sel: + * MMCRA[45:47] = thresh_sel + * + * if thresh_cmp: + * MMCRA[9:11] = thresh_cmp[0:2] + * MMCRA[12:18] = thresh_cmp[3:9] + * + * if unit == 6 or unit == 7 + * MMCRC[53:55] = cache_sel[1:3] (L2EVENT_SEL) + * else if unit == 8 or unit == 9: + * if cache_sel[0] == 0: # L3 bank + * MMCRC[47:49] = cache_sel[1:3] (L3EVENT_SEL0) + * else if cache_sel[0] == 1: + * MMCRC[50:51] = cache_sel[2:3] (L3EVENT_SEL1) + * else if cache_sel[1]: # L1 event + * MMCR1[16] = cache_sel[2] + * MMCR1[17] = cache_sel[3] + * + * if mark: + * MMCRA[63] = 1 (SAMPLE_ENABLE) + * MMCRA[57:59] = sample[0:2] (RAND_SAMP_ELIG) + * MMCRA[61:62] = sample[3:4] (RAND_SAMP_MODE) + * + * if EBB and BHRB: + * MMCRA[32:33] = IFM + * + * MMCRA[SDAR_MODE] = sm + */ + +/* * Some power9 event codes. */ #define EVENT(_name, _code) _name = _code, @@ -31,6 +103,9 @@ enum { #define POWER9_MMCRA_IFM2 0x0000000080000000UL #define POWER9_MMCRA_IFM3 0x00000000C0000000UL +/* PowerISA v2.07 format attribute structure*/ +extern struct attribute_group isa207_pmu_format_group; + GENERIC_EVENT_ATTR(cpu-cycles, PM_CYC); GENERIC_EVENT_ATTR(stalled-cycles-frontend, PM_ICT_NOSLOT_CYC); GENERIC_EVENT_ATTR(stalled-cycles-backend, PM_CMPLU_STALL); @@ -90,10 +165,16 @@ static struct attribute_group power9_pmu_events_group = { .attrs = power9_events_attr, }; -PMU_FORMAT_ATTR(event, "config:0-49"); +static const struct attribute_group *power9_isa207_pmu_attr_groups[] = { + &isa207_pmu_format_group, + &power9_pmu_events_group, + NULL, +}; + +PMU_FORMAT_ATTR(event, "config:0-51"); PMU_FORMAT_ATTR(pmcxsel, "config:0-7"); PMU_FORMAT_ATTR(mark, "config:8"); -PMU_FORMAT_ATTR(combine, "config:11"); +PMU_FORMAT_ATTR(combine, "config:10-11"); PMU_FORMAT_ATTR(unit, "config:12-15"); PMU_FORMAT_ATTR(pmc, "config:16-19"); PMU_FORMAT_ATTR(cache_sel, "config:20-23"); @@ -102,6 +183,7 @@ PMU_FORMAT_ATTR(thresh_sel, "config:29-31"); PMU_FORMAT_ATTR(thresh_stop, "config:32-35"); PMU_FORMAT_ATTR(thresh_start, "config:36-39"); PMU_FORMAT_ATTR(thresh_cmp, "config:40-49"); +PMU_FORMAT_ATTR(sdar_mode, "config:50-51"); static struct attribute *power9_pmu_format_attr[] = { &format_attr_event.attr, @@ -116,6 +198,7 @@ static struct attribute *power9_pmu_format_attr[] = { &format_attr_thresh_stop.attr, &format_attr_thresh_start.attr, &format_attr_thresh_cmp.attr, + &format_attr_sdar_mode.attr, NULL, }; @@ -291,6 +374,24 @@ static int power9_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = { #undef C +static struct power_pmu power9_isa207_pmu = { + .name = "POWER9", + .n_counter = MAX_PMU_COUNTERS, + .add_fields = ISA207_ADD_FIELDS, + .test_adder = ISA207_TEST_ADDER, + .compute_mmcr = isa207_compute_mmcr, + .config_bhrb = power9_config_bhrb, + .bhrb_filter_map = power9_bhrb_filter_map, + .get_constraint = isa207_get_constraint, + .disable_pmc = isa207_disable_pmc, + .flags = PPMU_HAS_SIER | PPMU_ARCH_207S, + .n_generic = ARRAY_SIZE(power9_generic_events), + .generic_events = power9_generic_events, + .cache_events = &power9_cache_events, + .attr_groups = power9_isa207_pmu_attr_groups, + .bhrb_nr = 32, +}; + static struct power_pmu power9_pmu = { .name = "POWER9", .n_counter = MAX_PMU_COUNTERS, @@ -311,14 +412,19 @@ static struct power_pmu power9_pmu = { static int __init init_power9_pmu(void) { - int rc; + int rc = 0; /* Comes from cpu_specs[] */ if (!cur_cpu_spec->oprofile_cpu_type || strcmp(cur_cpu_spec->oprofile_cpu_type, "ppc64/power9")) return -ENODEV; - rc = register_power_pmu(&power9_pmu); + if (cpu_has_feature(CPU_FTR_POWER9_DD1)) { + rc = register_power_pmu(&power9_isa207_pmu); + } else { + rc = register_power_pmu(&power9_pmu); + } + if (rc) return rc; |