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| author | Zhigang Lu | 2015-09-30 03:53:47 +0200 |
|---|---|---|
| committer | Chris Metcalf | 2016-01-04 21:09:31 +0100 |
| commit | f419e6f63c5afea00d7c17ebf54f2d265f5c4d7e (patch) | |
| tree | c9c49f97a3a3abd0c55fce3f41fe71ef0125d3af /arch/tile/kernel/ftrace.c | |
| parent | Linux 4.4-rc5 (diff) | |
| download | kernel-qcow2-linux-f419e6f63c5afea00d7c17ebf54f2d265f5c4d7e.tar.gz kernel-qcow2-linux-f419e6f63c5afea00d7c17ebf54f2d265f5c4d7e.tar.xz kernel-qcow2-linux-f419e6f63c5afea00d7c17ebf54f2d265f5c4d7e.zip | |
tile: define a macro ktext_writable_addr to get writable kernel text address
It is used by kgdb, ftrace, kprobe and jump label, so we factor
this out into a helper routine.
Reviewed-by: Chris Metcalf <cmetcalf@ezchip.com>
Signed-off-by: Zhigang Lu <zlu@ezchip.com>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Diffstat (limited to 'arch/tile/kernel/ftrace.c')
| -rw-r--r-- | arch/tile/kernel/ftrace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/tile/kernel/ftrace.c b/arch/tile/kernel/ftrace.c index 0c0996175b1e..4180ccdf9cd0 100644 --- a/arch/tile/kernel/ftrace.c +++ b/arch/tile/kernel/ftrace.c @@ -117,7 +117,7 @@ static int ftrace_modify_code(unsigned long pc, unsigned long old, return -EINVAL; /* Operate on writable kernel text mapping. */ - pc_wr = pc - MEM_SV_START + PAGE_OFFSET; + pc_wr = ktext_writable_addr(pc); if (probe_kernel_write((void *)pc_wr, &new, MCOUNT_INSN_SIZE)) return -EPERM; |