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| author | Thomas Gleixner <tglx@linutronix.de> | 2020-05-19 15:50:34 +0200 |
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| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-05-19 15:50:34 +0200 |
| commit | 1ed0948eea079a4c802d08cdb2e8db1eee0860f1 (patch) | |
| tree | cf7d2861d1557a305b0c7786661b9e99c343d215 /kernel/umh.c | |
| parent | 68f0f2690e183306b52671a9ad09fb31808b0500 (diff) | |
| parent | 6553896666433e7efec589838b400a2a652b3ffa (diff) | |
| download | linux-1ed0948eea079a4c802d08cdb2e8db1eee0860f1.tar.gz linux-1ed0948eea079a4c802d08cdb2e8db1eee0860f1.tar.bz2 linux-1ed0948eea079a4c802d08cdb2e8db1eee0860f1.zip | |
Merge tag 'noinstr-lds-2020-05-19' into core/rcu
Get the noinstr section and annotation markers to base the RCU parts on.
Diffstat (limited to 'kernel/umh.c')
| -rw-r--r-- | kernel/umh.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/umh.c b/kernel/umh.c index 7f255b5a8845..11bf5eea474c 100644 --- a/kernel/umh.c +++ b/kernel/umh.c @@ -544,6 +544,11 @@ EXPORT_SYMBOL_GPL(fork_usermode_blob); * Runs a user-space application. The application is started * asynchronously if wait is not set, and runs as a child of system workqueues. * (ie. it runs with full root capabilities and optimized affinity). + * + * Note: successful return value does not guarantee the helper was called at + * all. You can't rely on sub_info->{init,cleanup} being called even for + * UMH_WAIT_* wait modes as STATIC_USERMODEHELPER_PATH="" turns all helpers + * into a successful no-op. */ int call_usermodehelper_exec(struct subprocess_info *sub_info, int wait) { |