diff options
| author | Nicholas Mc Guire <hofrat@osadl.org> | 2019-01-24 02:48:16 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2019-01-25 16:43:35 +0100 |
| commit | b73d5dc72272c0012999f939476b703d269d21b6 (patch) | |
| tree | f7badad5904aa7d595e47f036433dc81c8f4ac7c | |
| parent | a6c34247af70053219fcfa711bfc5e0d0d954daf (diff) | |
livepatch: samples: non static warnings fix
Sparse reported warnings about non-static symbols. For the variables
a simple static attribute is fine - for the functions referenced by
livepatch via klp_func the symbol-names must be unmodified in the
symbol table and the patchable code has to be emitted. The resolution
is to attach __used attribute to the shared statically declared functions.
Link: https://lore.kernel.org/lkml/1544965657-26804-1-git-send-email-hofrat@osadl.org/
Suggested-by: Joe Lawrence <joe.lawrence@redhat.com>
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| -rw-r--r-- | samples/livepatch/livepatch-shadow-fix1.c | 4 | ||||
| -rw-r--r-- | samples/livepatch/livepatch-shadow-fix2.c | 4 | ||||
| -rw-r--r-- | samples/livepatch/livepatch-shadow-mod.c | 11 |
3 files changed, 10 insertions, 9 deletions
diff --git a/samples/livepatch/livepatch-shadow-fix1.c b/samples/livepatch/livepatch-shadow-fix1.c index e8f1bd6b29b1..dd49c9473580 100644 --- a/samples/livepatch/livepatch-shadow-fix1.c +++ b/samples/livepatch/livepatch-shadow-fix1.c @@ -71,7 +71,7 @@ static int shadow_leak_ctor(void *obj, void *shadow_data, void *ctor_data) return 0; } -struct dummy *livepatch_fix1_dummy_alloc(void) +static struct dummy *livepatch_fix1_dummy_alloc(void) { struct dummy *d; void *leak; @@ -113,7 +113,7 @@ static void livepatch_fix1_dummy_leak_dtor(void *obj, void *shadow_data) __func__, d, *shadow_leak); } -void livepatch_fix1_dummy_free(struct dummy *d) +static void livepatch_fix1_dummy_free(struct dummy *d) { void **shadow_leak; diff --git a/samples/livepatch/livepatch-shadow-fix2.c b/samples/livepatch/livepatch-shadow-fix2.c index b34c7bf83356..b6dac2b9f97f 100644 --- a/samples/livepatch/livepatch-shadow-fix2.c +++ b/samples/livepatch/livepatch-shadow-fix2.c @@ -50,7 +50,7 @@ struct dummy { unsigned long jiffies_expire; }; -bool livepatch_fix2_dummy_check(struct dummy *d, unsigned long jiffies) +static bool livepatch_fix2_dummy_check(struct dummy *d, unsigned long jiffies) { int *shadow_count; @@ -78,7 +78,7 @@ static void livepatch_fix2_dummy_leak_dtor(void *obj, void *shadow_data) __func__, d, *shadow_leak); } -void livepatch_fix2_dummy_free(struct dummy *d) +static void livepatch_fix2_dummy_free(struct dummy *d) { void **shadow_leak; int *shadow_count; diff --git a/samples/livepatch/livepatch-shadow-mod.c b/samples/livepatch/livepatch-shadow-mod.c index 4aa8a88d3cd6..4d79c6dc055b 100644 --- a/samples/livepatch/livepatch-shadow-mod.c +++ b/samples/livepatch/livepatch-shadow-mod.c @@ -96,15 +96,15 @@ MODULE_DESCRIPTION("Buggy module for shadow variable demo"); * Keep a list of all the dummies so we can clean up any residual ones * on module exit */ -LIST_HEAD(dummy_list); -DEFINE_MUTEX(dummy_list_mutex); +static LIST_HEAD(dummy_list); +static DEFINE_MUTEX(dummy_list_mutex); struct dummy { struct list_head list; unsigned long jiffies_expire; }; -noinline struct dummy *dummy_alloc(void) +static __used noinline struct dummy *dummy_alloc(void) { struct dummy *d; void *leak; @@ -129,7 +129,7 @@ noinline struct dummy *dummy_alloc(void) return d; } -noinline void dummy_free(struct dummy *d) +static __used noinline void dummy_free(struct dummy *d) { pr_info("%s: dummy @ %p, expired = %lx\n", __func__, d, d->jiffies_expire); @@ -137,7 +137,8 @@ noinline void dummy_free(struct dummy *d) kfree(d); } -noinline bool dummy_check(struct dummy *d, unsigned long jiffies) +static __used noinline bool dummy_check(struct dummy *d, + unsigned long jiffies) { return time_after(jiffies, d->jiffies_expire); } |