From: Yang Shi <yang.shi@linux.alibaba.com>
To: mhocko@kernel.org, willy@infradead.org,
ldufour@linux.vnet.ibm.com, kirill@shutemov.name, vbabka@suse.cz,
akpm@linux-foundation.org, peterz@infradead.org,
mingo@redhat.com, acme@kernel.org,
alexander.shishkin@linux.intel.com, jolsa@redhat.com,
namhyung@kernel.org
Cc: yang.shi@linux.alibaba.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: [RFC v7 PATCH 3/4] uprobes: make vma_has_uprobes non-static
Date: Fri, 10 Aug 2018 07:36:02 +0800 [thread overview]
Message-ID: <1533857763-43527-4-git-send-email-yang.shi@linux.alibaba.com> (raw)
In-Reply-To: <1533857763-43527-1-git-send-email-yang.shi@linux.alibaba.com>
vma_has_uprobes() will be used in the following patch to check if a vma
could be unmapped with holding read mmap_sem, but it is static. So, make
it non-static to use outside uprobe.
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
---
include/linux/uprobes.h | 7 +++++++
kernel/events/uprobes.c | 2 +-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
index 0a294e9..caeb26b 100644
--- a/include/linux/uprobes.h
+++ b/include/linux/uprobes.h
@@ -149,6 +149,8 @@ struct uprobes_state {
extern bool arch_uprobe_ignore(struct arch_uprobe *aup, struct pt_regs *regs);
extern void arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr,
void *src, unsigned long len);
+extern bool vma_has_uprobes(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end);
#else /* !CONFIG_UPROBES */
struct uprobes_state {
};
@@ -203,5 +205,10 @@ static inline void uprobe_copy_process(struct task_struct *t, unsigned long flag
static inline void uprobe_clear_state(struct mm_struct *mm)
{
}
+static inline bool vma_has_uprobes(struct vm_area_struct *vma, unsigned long start,
+ unsigned long end)
+{
+ return false;
+}
#endif /* !CONFIG_UPROBES */
#endif /* _LINUX_UPROBES_H */
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index ccc579a..4880c46 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1095,7 +1095,7 @@ int uprobe_mmap(struct vm_area_struct *vma)
return 0;
}
-static bool
+bool
vma_has_uprobes(struct vm_area_struct *vma, unsigned long start, unsigned long end)
{
loff_t min, max;
--
1.8.3.1
next prev parent reply other threads:[~2018-08-09 23:36 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-09 23:35 [RFC v7 PATCH 0/4] mm: zap pages with read mmap_sem in munmap for large mapping Yang Shi
2018-08-09 23:36 ` [RFC v7 PATCH 1/4] mm: refactor do_munmap() to extract the common part Yang Shi
2018-08-10 10:20 ` Vlastimil Babka
2018-08-10 17:41 ` Matthew Wilcox
2018-08-10 18:23 ` Yang Shi
2018-08-09 23:36 ` [RFC v7 PATCH 2/4] mm: mmap: zap pages with read mmap_sem in munmap Yang Shi
2018-08-10 17:57 ` Matthew Wilcox
2018-08-10 18:26 ` Yang Shi
2018-08-09 23:36 ` Yang Shi [this message]
2018-08-09 23:36 ` [RFC v7 PATCH 4/4] mm: unmap special vmas with regular do_munmap() Yang Shi
2018-08-10 9:51 ` Vlastimil Babka
2018-08-10 11:59 ` Michal Hocko
2018-08-10 16:51 ` Yang Shi
2018-08-10 10:46 ` Vlastimil Babka
2018-08-10 17:00 ` Yang Shi
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1533857763-43527-4-git-send-email-yang.shi@linux.alibaba.com \
--to=yang.shi@linux.alibaba.com \
--cc=acme@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=alexander.shishkin@linux.intel.com \
--cc=jolsa@redhat.com \
--cc=kirill@shutemov.name \
--cc=ldufour@linux.vnet.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=mingo@redhat.com \
--cc=namhyung@kernel.org \
--cc=peterz@infradead.org \
--cc=vbabka@suse.cz \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).