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20231028211545eusmtip1ecd5e3b6d81770cd6ea6596dd01bf8b4~SYfxRlEbt0467404674eusmtip1O; Sat, 28 Oct 2023 21:15:45 +0000 (GMT) Received: from CAMSVWEXC02.scsc.local (2002:6a01:e348::6a01:e348) by CAMSVWEXC01.scsc.local (2002:6a01:e347::6a01:e347) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 28 Oct 2023 22:15:45 +0100 Received: from CAMSVWEXC02.scsc.local ([::1]) by CAMSVWEXC02.scsc.local ([fe80::3c08:6c51:fa0a:6384%13]) with mapi id 15.00.1497.012; Sat, 28 Oct 2023 22:15:44 +0100 From: Daniel Gomez To: "minchan@kernel.org" , "senozhatsky@chromium.org" , "axboe@kernel.dk" , "djwong@kernel.org" , "willy@infradead.org" , "hughd@google.com" , "akpm@linux-foundation.org" , "mcgrof@kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" , "linux-xfs@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" CC: "gost.dev@samsung.com" , Pankaj Raghav , Daniel Gomez Subject: [RFC PATCH 06/11] shmem: trace shmem_add_to_page_cache folio order 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Based on include/trace/filemap.h. Update MAINTAINERS file list for SHMEM. Signed-off-by: Daniel Gomez --- MAINTAINERS | 1 + include/trace/events/shmem.h | 52 ++++++++++++++++++++++++++++++++++++ mm/shmem.c | 4 +++ 3 files changed, 57 insertions(+) create mode 100644 include/trace/events/shmem.h diff --git a/MAINTAINERS b/MAINTAINERS index bdc4638b2df5..befa63e7cb28 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -21923,6 +21923,7 @@ M: Hugh Dickins L: linux-mm@kvack.org S: Maintained F: include/linux/shmem_fs.h +F: include/trace/events/shmem.h F: mm/shmem.c TOMOYO SECURITY MODULE diff --git a/include/trace/events/shmem.h b/include/trace/events/shmem.h new file mode 100644 index 000000000000..223f78f11457 --- /dev/null +++ b/include/trace/events/shmem.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM shmem + +#if !defined(_TRACE_SHMEM_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SHMEM_H + +#include +#include + +DECLARE_EVENT_CLASS(mm_shmem_op_page_cache, + + TP_PROTO(struct folio *folio), + + TP_ARGS(folio), + + TP_STRUCT__entry( + __field(unsigned long, pfn) + __field(unsigned long, i_ino) + __field(unsigned long, index) + __field(dev_t, s_dev) + __field(unsigned char, order) + ), + + TP_fast_assign( + __entry->pfn = folio_pfn(folio); + __entry->i_ino = folio->mapping->host->i_ino; + __entry->index = folio->index; + if (folio->mapping->host->i_sb) + __entry->s_dev = folio->mapping->host->i_sb->s_dev; + else + __entry->s_dev = folio->mapping->host->i_rdev; + __entry->order = folio_order(folio); + ), + + TP_printk("dev %d:%d ino %lx pfn=0x%lx ofs=%lu order=%u", + MAJOR(__entry->s_dev), MINOR(__entry->s_dev), + __entry->i_ino, + __entry->pfn, + __entry->index << PAGE_SHIFT, + __entry->order) +); + +DEFINE_EVENT(mm_shmem_op_page_cache, mm_shmem_add_to_page_cache, + TP_PROTO(struct folio *folio), + TP_ARGS(folio) + ); + +#endif /* _TRACE_SHMEM_H */ + +/* This part must be outside protection */ +#include diff --git a/mm/shmem.c b/mm/shmem.c index ab31d2880e5d..e2893cf2287f 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -84,6 +84,9 @@ static struct vfsmount *shm_mnt __ro_after_init; #include "internal.h" +#define CREATE_TRACE_POINTS +#include + #define VM_ACCT(size) (PAGE_ALIGN(size) >> PAGE_SHIFT) /* Pretend that each entry is of this size in directory's i_size */ @@ -1726,6 +1729,7 @@ static struct folio *shmem_alloc_and_add_folio(gfp_t gfp, } } + trace_mm_shmem_add_to_page_cache(folio); shmem_recalc_inode(inode, pages, 0); folio_add_lru(folio); return folio;