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| author | Oleg Nesterov <oleg@redhat.com> | 2012-08-19 16:15:09 +0200 |
|---|---|---|
| committer | Oleg Nesterov <oleg@redhat.com> | 2012-09-15 17:37:27 +0200 |
| commit | 9f68f672c47b9bd4cfe0a667ecb0b1382c61e2de (patch) | |
| tree | eb389851ce75fa15ad2b5e34c88d4c6af1fb197a /include/linux/sched.h | |
| parent | 6f47caa0e1e4887aa2ddca8388d058d35725d815 (diff) | |
| download | talos-obmc-linux-9f68f672c47b9bd4cfe0a667ecb0b1382c61e2de.tar.gz talos-obmc-linux-9f68f672c47b9bd4cfe0a667ecb0b1382c61e2de.zip | |
uprobes: Introduce MMF_RECALC_UPROBES
Add the new MMF_RECALC_UPROBES flag, it means that MMF_HAS_UPROBES
can be false positive after remove_breakpoint() or uprobe_munmap().
It is also set by uprobe_dup_mmap(), this is not optimal but simple.
We could add the new hook, uprobe_dup_vma(), to set MMF_HAS_UPROBES
only if the new mm actually has uprobes, but I don't think this
makes sense.
The next patch will use this flag to clear MMF_HAS_UPROBES.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 3667c332e61d..255661d48834 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -446,7 +446,8 @@ extern int get_dumpable(struct mm_struct *mm); #define MMF_VM_HUGEPAGE 17 /* set when VM_HUGEPAGE is set on vma */ #define MMF_EXE_FILE_CHANGED 18 /* see prctl_set_mm_exe_file() */ -#define MMF_HAS_UPROBES 19 /* might have uprobes */ +#define MMF_HAS_UPROBES 19 /* has uprobes */ +#define MMF_RECALC_UPROBES 20 /* MMF_HAS_UPROBES can be wrong */ #define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK) |
