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| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2017-04-19 14:52:26 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-24 11:07:58 +0200 |
| commit | ead514d5fb30a0889d51c0f0e35c3e346165a955 (patch) | |
| tree | a6fb97f2cfce93e5c8ff10351cd3f4763ae1fc4e /Documentation/features | |
| parent | powerpc/ftrace: Restore LR from pt_regs (diff) | |
| download | linux-ead514d5fb30a0889d51c0f0e35c3e346165a955.tar.xz linux-ead514d5fb30a0889d51c0f0e35c3e346165a955.zip | |
powerpc/kprobes: Add support for KPROBES_ON_FTRACE
Allow kprobes to be placed on ftrace _mcount() call sites. This optimization
avoids the use of a trap, by riding on ftrace infrastructure.
This depends on HAVE_DYNAMIC_FTRACE_WITH_REGS which depends on MPROFILE_KERNEL,
which is only currently enabled on powerpc64le with newer toolchains.
Based on the x86 code by Masami.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'Documentation/features')
| -rw-r--r-- | Documentation/features/debug/kprobes-on-ftrace/arch-support.txt | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt b/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt index 40f44d041fb4..930430c6aef6 100644 --- a/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt +++ b/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt @@ -27,7 +27,7 @@ | nios2: | TODO | | openrisc: | TODO | | parisc: | TODO | - | powerpc: | TODO | + | powerpc: | ok | | s390: | TODO | | score: | TODO | | sh: | TODO | |