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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-14 17:34:12 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-14 17:34:12 -0800 |
commit | 8a8ca83ec3cf7ffc69020c189e3d368b1d4ba98a (patch) | |
tree | 62b54c44b652cb894f0e9d4847b753259c5de4a8 /arch/powerpc | |
parent | e857b6fcc5af0fbe042bec7e56a1533fe78ef594 (diff) | |
parent | c2208046bba6842dc232a600dc5cafc2fca41078 (diff) | |
download | linux-8a8ca83ec3cf7ffc69020c189e3d368b1d4ba98a.tar.bz2 |
Merge tag 'perf-core-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Thomas Gleixner:
"Core:
- Better handling of page table leaves on archictectures which have
architectures have non-pagetable aligned huge/large pages. For such
architectures a leaf can actually be part of a larger entry.
- Prevent a deadlock vs exec_update_mutex
Architectures:
- The related updates for page size calculation of leaf entries
- The usual churn to support new CPUs
- Small fixes and improvements all over the place"
* tag 'perf-core-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
perf/x86/intel: Add Tremont Topdown support
uprobes/x86: Fix fall-through warnings for Clang
perf/x86: Fix fall-through warnings for Clang
kprobes/x86: Fix fall-through warnings for Clang
perf/x86/intel/lbr: Fix the return type of get_lbr_cycles()
perf/x86/intel: Fix rtm_abort_event encoding on Ice Lake
x86/kprobes: Restore BTF if the single-stepping is cancelled
perf: Break deadlock involving exec_update_mutex
sparc64/mm: Implement pXX_leaf_size() support
powerpc/8xx: Implement pXX_leaf_size() support
arm64/mm: Implement pXX_leaf_size() support
perf/core: Fix arch_perf_get_page_size()
mm: Introduce pXX_leaf_size()
mm/gup: Provide gup_get_pte() more generic
perf/x86/intel: Add event constraint for CYCLE_ACTIVITY.STALLS_MEM_ANY
perf/x86/intel/uncore: Add Rocket Lake support
perf/x86/msr: Add Rocket Lake CPU support
perf/x86/cstate: Add Rocket Lake CPU support
perf/x86/intel: Add Rocket Lake CPU support
perf,mm: Handle non-page-table-aligned hugetlbfs
...
Diffstat (limited to 'arch/powerpc')
-rw-r--r-- | arch/powerpc/include/asm/nohash/32/pte-8xx.h | 23 | ||||
-rw-r--r-- | arch/powerpc/perf/core-book3s.c | 6 |
2 files changed, 27 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/nohash/32/pte-8xx.h b/arch/powerpc/include/asm/nohash/32/pte-8xx.h index 1581204467e1..fcc48d590d88 100644 --- a/arch/powerpc/include/asm/nohash/32/pte-8xx.h +++ b/arch/powerpc/include/asm/nohash/32/pte-8xx.h @@ -135,6 +135,29 @@ static inline pte_t pte_mkhuge(pte_t pte) } #define pte_mkhuge pte_mkhuge + +static inline unsigned long pgd_leaf_size(pgd_t pgd) +{ + if (pgd_val(pgd) & _PMD_PAGE_8M) + return SZ_8M; + return SZ_4M; +} + +#define pgd_leaf_size pgd_leaf_size + +static inline unsigned long pte_leaf_size(pte_t pte) +{ + pte_basic_t val = pte_val(pte); + + if (val & _PAGE_HUGE) + return SZ_512K; + if (val & _PAGE_SPS) + return SZ_16K; + return SZ_4K; +} + +#define pte_leaf_size pte_leaf_size + #endif #endif /* __KERNEL__ */ diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 08643cba1494..6586f7e71cfb 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -2074,6 +2074,9 @@ static struct pmu power_pmu = { .sched_task = power_pmu_sched_task, }; +#define PERF_SAMPLE_ADDR_TYPE (PERF_SAMPLE_ADDR | \ + PERF_SAMPLE_PHYS_ADDR | \ + PERF_SAMPLE_DATA_PAGE_SIZE) /* * A counter has overflowed; update its count and record * things if requested. Note that interrupts are hard-disabled @@ -2129,8 +2132,7 @@ static void record_and_restart(struct perf_event *event, unsigned long val, perf_sample_data_init(&data, ~0ULL, event->hw.last_period); - if (event->attr.sample_type & - (PERF_SAMPLE_ADDR | PERF_SAMPLE_PHYS_ADDR)) + if (event->attr.sample_type & PERF_SAMPLE_ADDR_TYPE) perf_get_data_addr(event, regs, &data.addr); if (event->attr.sample_type & PERF_SAMPLE_BRANCH_STACK) { |