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Merge tag 'v4.9.188' of git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable into odroidg12-4.9.y

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This is the 4.9.188 stable release
This commit is contained in:
Mauro (mdrjr) Ribeiro
2020-04-07 20:10:31 -03:00
parent 33417c4f2f fa897d1731
commit ca365bd32c
51 changed files with 300 additions and 179 deletions
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28
kernel/trace/ftrace.c
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@@ -1632,6 +1632,11 @@ static bool test_rec_ops_needs_regs(struct dyn_ftrace *rec)
return keep_regs;
}
static struct ftrace_ops *
ftrace_find_tramp_ops_any(struct dyn_ftrace *rec);
static struct ftrace_ops *
ftrace_find_tramp_ops_next(struct dyn_ftrace *rec, struct ftrace_ops *ops);
static bool __ftrace_hash_rec_update(struct ftrace_ops *ops,
int filter_hash,
bool inc)
@@ -1760,15 +1765,17 @@ static bool __ftrace_hash_rec_update(struct ftrace_ops *ops,
}
/*
* If the rec had TRAMP enabled, then it needs to
* be cleared. As TRAMP can only be enabled iff
* there is only a single ops attached to it.
* In otherwords, always disable it on decrementing.
* In the future, we may set it if rec count is
* decremented to one, and the ops that is left
* has a trampoline.
* The TRAMP needs to be set only if rec count
* is decremented to one, and the ops that is
* left has a trampoline. As TRAMP can only be
* enabled if there is only a single ops attached
* to it.
*/
rec->flags &= ~FTRACE_FL_TRAMP;
if (ftrace_rec_count(rec) == 1 &&
ftrace_find_tramp_ops_any(rec))
rec->flags |= FTRACE_FL_TRAMP;
else
rec->flags &= ~FTRACE_FL_TRAMP;
/*
* flags will be cleared in ftrace_check_record()
@@ -1961,11 +1968,6 @@ static void print_ip_ins(const char *fmt, const unsigned char *p)
printk(KERN_CONT "%s%02x", i ? ":" : "", p[i]);
}
static struct ftrace_ops *
ftrace_find_tramp_ops_any(struct dyn_ftrace *rec);
static struct ftrace_ops *
ftrace_find_tramp_ops_next(struct dyn_ftrace *rec, struct ftrace_ops *ops);
enum ftrace_bug_type ftrace_bug_type;
const void *ftrace_expected;