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author | Michal Marek <mmarek@suse.cz> | 2010-12-14 22:01:55 +0100 |
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committer | Michal Marek <mmarek@suse.cz> | 2010-12-14 22:01:55 +0100 |
commit | 8990c1bc4be46473ad19bf2fa612ca57286f3df4 (patch) | |
tree | 3cea60576903a1d26c67e6ec62891b524d390e95 /Documentation/kprobes.txt | |
parent | 2979076fbf17a0947d6eba367b0cac19c907c160 (diff) | |
parent | c8ddb2713c624f432fa5fe3c7ecffcdda46ea0d4 (diff) |
Merge commit 'v2.6.37-rc1' into kbuild/kbuild
Diffstat (limited to 'Documentation/kprobes.txt')
-rw-r--r-- | Documentation/kprobes.txt | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/Documentation/kprobes.txt b/Documentation/kprobes.txt index 6653017680d..741fe66d6ec 100644 --- a/Documentation/kprobes.txt +++ b/Documentation/kprobes.txt @@ -285,6 +285,7 @@ architectures: - sparc64 (Return probes not yet implemented.) - arm - ppc +- mips 3. Configuring Kprobes @@ -541,9 +542,11 @@ Kprobes does not use mutexes or allocate memory except during registration and unregistration. Probe handlers are run with preemption disabled. Depending on the -architecture, handlers may also run with interrupts disabled. In any -case, your handler should not yield the CPU (e.g., by attempting to -acquire a semaphore). +architecture and optimization state, handlers may also run with +interrupts disabled (e.g., kretprobe handlers and optimized kprobe +handlers run without interrupt disabled on x86/x86-64). In any case, +your handler should not yield the CPU (e.g., by attempting to acquire +a semaphore). Since a return probe is implemented by replacing the return address with the trampoline's address, stack backtraces and calls |