hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/release-management/issues/ID3TGE -------------------------------- In order to debug mfs, we provide the some basic tracepoint in PageAttach, which are: - trace_attach_extent_start - trace_attach_extent_end - trace_attach_page_range_start - trace_attach_page_range_end Signed-off-by: Liu Mingrui <liumingrui@huawei.com> --- MAINTAINERS | 1 + drivers/misc/zcopy/zcopy.c | 13 +++ include/trace/events/attach.h | 157 ++++++++++++++++++++++++++++++++++ 3 files changed, 171 insertions(+) create mode 100644 include/trace/events/attach.h diff --git a/MAINTAINERS b/MAINTAINERS index f66131aba5a3..a1de6ed71354 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -24154,6 +24154,7 @@ ZCOPY DRIVER M: Mingrui Liu <liumingrui@huawei.com> S: Maintained F: drivers/misc/zcopy/ +F: include/trace/events/attach.h THE REST M: Linus Torvalds <torvalds@linux-foundation.org> diff --git a/drivers/misc/zcopy/zcopy.c b/drivers/misc/zcopy/zcopy.c index c9c93539a772..32266f5a74b7 100644 --- a/drivers/misc/zcopy/zcopy.c +++ b/drivers/misc/zcopy/zcopy.c @@ -19,6 +19,9 @@ #include <asm/tlbflush.h> #include <asm/pgtable-hwdef.h> +#define CREATE_TRACE_POINTS +#include <trace/events/attach.h> + #ifndef PUD_SHIFT #define ARM64_HW_PGTABLE_LEVEL_SHIFT(n) ((PAGE_SHIFT - 3) * (4 - (n)) + 3) #define PUD_SHIFT ARM64_HW_PGTABLE_LEVEL_SHIFT(1) @@ -592,8 +595,12 @@ static int attach_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, if (pmd_trans_huge(*src_pmd)) { if (extent == HPAGE_PMD_SIZE) { + trace_attach_extent_start(dst_mm, src_mm, dst_addr, src_addr, + dst_pmd, src_pmd, extent); ret = attach_huge_pmd(dst_vma, src_vma, dst_addr, src_addr, dst_pmd, src_pmd); + trace_attach_extent_end(dst_mm, src_mm, dst_addr, src_addr, + dst_pmd, src_pmd, ret); if (ret) return ret; continue; @@ -611,8 +618,12 @@ static int attach_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, break; } + trace_attach_extent_start(dst_mm, src_mm, dst_addr, src_addr, dst_pmd, + src_pmd, extent); ret = attach_pte_range(dst_vma, src_vma, dst_addr, src_addr, dst_pmd, src_pmd, PMD_SIZE); + trace_attach_extent_end(dst_mm, src_mm, dst_addr, src_addr, dst_pmd, + src_pmd, ret); if (ret < 0) break; } @@ -694,7 +705,9 @@ static int attach_pages(unsigned long dst_addr, unsigned long src_addr, goto free_pages_array; } + trace_attach_page_range_start(dst_mm, src_mm, dst_addr, src_addr, size); ret = attach_page_range(dst_mm, src_mm, dst_addr, src_addr, size); + trace_attach_page_range_end(dst_mm, src_mm, dst_addr, src_addr, ret); unpin_user_pages_dirty_lock(process_pages, pinned_pages, 0); diff --git a/include/trace/events/attach.h b/include/trace/events/attach.h new file mode 100644 index 000000000000..dbbf3f0e6aea --- /dev/null +++ b/include/trace/events/attach.h @@ -0,0 +1,157 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM attach + +#if !defined(_TRACE_ATTACH_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_ATTACH_H + +#include <linux/types.h> +#include <linux/tracepoint.h> +#include <linux/mm_types.h> + +TRACE_EVENT(attach_page_range_start, + + TP_PROTO(struct mm_struct *dst_mm, + struct mm_struct *src_mm, + unsigned long dst_addr, + unsigned long src_addr, + unsigned long size), + + TP_ARGS(dst_mm, src_mm, dst_addr, src_addr, size), + + TP_STRUCT__entry( + __field(struct mm_struct *, dst_mm) + __field(struct mm_struct *, src_mm) + __field(unsigned long, dst_addr) + __field(unsigned long, src_addr) + __field(unsigned long, size) + ), + + TP_fast_assign( + __entry->dst_mm = dst_mm; + __entry->src_mm = src_mm; + __entry->dst_addr = dst_addr; + __entry->src_addr = src_addr; + __entry->size = size; + ), + + TP_printk("src_mm=%p src_mm=%p dst_addr=0x%lx src_addr=0x%lx size=%ld", + __entry->dst_mm, __entry->src_mm, + __entry->dst_addr, __entry->src_addr, + __entry->size) +); + +TRACE_EVENT(attach_page_range_end, + + TP_PROTO(struct mm_struct *dst_mm, + struct mm_struct *src_mm, + unsigned long dst_addr, + unsigned long src_addr, + int ret), + + TP_ARGS(dst_mm, src_mm, dst_addr, src_addr, ret), + + TP_STRUCT__entry( + __field(struct mm_struct *, dst_mm) + __field(struct mm_struct *, src_mm) + __field(unsigned long, dst_addr) + __field(unsigned long, src_addr) + __field(int, ret) + ), + + TP_fast_assign( + __entry->dst_mm = dst_mm; + __entry->src_mm = src_mm; + __entry->dst_addr = dst_addr; + __entry->src_addr = src_addr; + __entry->ret = ret; + ), + + TP_printk("src_mm=%p src_mm=%p dst_addr=0x%lx src_addr=0x%lx ret=%d", + __entry->dst_mm, __entry->src_mm, + __entry->dst_addr, __entry->src_addr, + __entry->ret) +); + +TRACE_EVENT(attach_extent_start, + + TP_PROTO(struct mm_struct *dst_mm, + struct mm_struct *src_mm, + unsigned long dst_addr, + unsigned long src_addr, + pmd_t *new_pmd, + pmd_t *old_pmd, + unsigned long extent), + + TP_ARGS(dst_mm, src_mm, dst_addr, src_addr, new_pmd, old_pmd, extent), + + TP_STRUCT__entry( + __field(struct mm_struct *, dst_mm) + __field(struct mm_struct *, src_mm) + __field(unsigned long, dst_addr) + __field(unsigned long, src_addr) + __field(pmd_t *, new_pmd) + __field(pmd_t *, old_pmd) + __field(unsigned long, extent) + ), + + TP_fast_assign( + __entry->dst_mm = dst_mm; + __entry->src_mm = src_mm; + __entry->dst_addr = dst_addr; + __entry->src_addr = src_addr; + __entry->new_pmd = new_pmd; + __entry->old_pmd = old_pmd; + __entry->extent = extent; + ), + + TP_printk("dst_mm=%p src_mm=%p dst_addr=0x%lx src_addr=0x%lx new_pmd=%016llx old_pmd=%016llx extent=%ld", + __entry->dst_mm, __entry->src_mm, + __entry->dst_addr, __entry->src_addr, + pmd_val(*__entry->new_pmd), pmd_val(*__entry->old_pmd), + __entry->extent) +); + +TRACE_EVENT(attach_extent_end, + + TP_PROTO(struct mm_struct *dst_mm, + struct mm_struct *src_mm, + unsigned long dst_addr, + unsigned long src_addr, + pmd_t *new_pmd, + pmd_t *old_pmd, + int ret), + + TP_ARGS(dst_mm, src_mm, dst_addr, src_addr, new_pmd, old_pmd, ret), + + TP_STRUCT__entry( + __field(struct mm_struct *, dst_mm) + __field(struct mm_struct *, src_mm) + __field(unsigned long, dst_addr) + __field(unsigned long, src_addr) + __field(pmd_t *, new_pmd) + __field(pmd_t *, old_pmd) + __field(int, ret) + ), + + TP_fast_assign( + __entry->dst_mm = dst_mm; + __entry->src_mm = src_mm; + __entry->dst_addr = dst_addr; + __entry->src_addr = src_addr; + __entry->new_pmd = new_pmd; + __entry->old_pmd = old_pmd; + __entry->ret = ret; + ), + + TP_printk("dst_mm=%p src_mm=%p dst_addr=0x%lx src_addr=0x%lx new_pmd=%016llx old_pmd=%016llx ret=%d", + __entry->dst_mm, __entry->src_mm, + __entry->dst_addr, __entry->src_addr, + pmd_val(*__entry->new_pmd), pmd_val(*__entry->old_pmd), + __entry->ret) +); + +#endif /* _TRACE_ATTACH_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> -- 2.25.1