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ANDROID: signal: Add vendor hook for memory reaping

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Since commit 3bcdb496f496 ("ANDROID: signal: Add vendor hook
for memory reaping"), but *current* does not need.  Add another
hook here to determine killed process need be reaped.
(e.g. get_mm_counter)

Bug: 232062955
Change-Id: Ide13d3a2e8c199b063f41e071a2bf2fd60a91b04
Signed-off-by: liuhailong <liuhailong@oppo.com>
(cherry picked from commit e27ad1d21124c25259911574775fafb5f60bb53e)
This commit is contained in:
liuhailong
2022-05-10 16:58:17 +08:00
committed by Treehugger Robot
parent 5edc332cee
commit 54f780d093
3 changed files with 5 additions and 0 deletions
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1
drivers/android/vendor_hooks.c
View File

@@ -135,6 +135,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mutex_wait_start);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mutex_wait_finish);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_mutex_init);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_process_killed);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_killed_process);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rtmutex_wait_start);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rtmutex_wait_finish);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_rwsem_read_wait_start);

3
include/trace/hooks/signal.h
View File

@@ -18,6 +18,9 @@ DECLARE_HOOK(android_vh_process_killed,
DECLARE_HOOK(android_vh_exit_signal,
TP_PROTO(struct task_struct *task),
TP_ARGS(task));
DECLARE_HOOK(android_vh_killed_process,
TP_PROTO(struct task_struct *killer, struct task_struct *dst, bool *reap),
TP_ARGS(killer, dst, reap));
#endif /* _TRACE_HOOK_SIGNAL_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

1
kernel/signal.c
View File

@@ -1448,6 +1448,7 @@ int group_send_sig_info(int sig, struct kernel_siginfo *info,
bool reap = false;
trace_android_vh_process_killed(current, &reap);
trace_android_vh_killed_process(current, p, &reap);
if (reap)
add_to_oom_reaper(p);
}