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| author |   Hridya Valsaraju <hridya@google.com> | 2019-09-04 13:07:03 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-04 13:17:35 +0200 |
| commit | ca2864c6e8965c37df97f11e6f99e83e09806b1c (patch) | |
| tree | 8f80195ce645022efaa0ec985ee4ad67b5134600 /drivers/android/binder.c | |
| parent | binder: Validate the default binderfs device names. (diff) | |
| download | linux-dev-ca2864c6e8965c37df97f11e6f99e83e09806b1c.tar.xz linux-dev-ca2864c6e8965c37df97f11e6f99e83e09806b1c.zip | |
binder: Add default binder devices through binderfs when configured
Currently, since each binderfs instance needs its own
private binder devices, every time a binderfs instance is
mounted, all the default binder devices need to be created
via the BINDER_CTL_ADD IOCTL. This patch aims to
add a solution to automatically create the default binder
devices for each binderfs instance that gets mounted.
To achieve this goal, when CONFIG_ANDROID_BINDERFS is set,
the default binder devices specified by CONFIG_ANDROID_BINDER_DEVICES
are created in each binderfs instance instead of global devices
being created by the binder driver.
Co-developed-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Hridya Valsaraju <hridya@google.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Link: https://lore.kernel.org/r/20190808222727.132744-2-hridya@google.com
Link: https://lore.kernel.org/r/20190904110704.8606-2-christian.brauner@ubuntu.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/android/binder.c')
| -rw-r--r-- | drivers/android/binder.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index dc1c83eafc22..ef2d3e582368 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -122,7 +122,7 @@ static uint32_t binder_debug_mask = BINDER_DEBUG_USER_ERROR | BINDER_DEBUG_FAILED_TRANSACTION | BINDER_DEBUG_DEAD_TRANSACTION; module_param_named(debug_mask, binder_debug_mask, uint, 0644); -static char *binder_devices_param = CONFIG_ANDROID_BINDER_DEVICES; +char *binder_devices_param = CONFIG_ANDROID_BINDER_DEVICES; module_param_named(devices, binder_devices_param, charp, 0444); static DECLARE_WAIT_QUEUE_HEAD(binder_user_error_wait); @@ -6131,7 +6131,8 @@ static int __init binder_init(void) &transaction_log_fops); } - if (strcmp(binder_devices_param, "") != 0) { + if (!IS_ENABLED(CONFIG_ANDROID_BINDERFS) && + strcmp(binder_devices_param, "") != 0) { /* * Copy the module_parameter string, because we don't want to * tokenize it in-place. |