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| author | Stephen Rothwell <sfr@canb.auug.org.au> | 2022-06-20 09:54:23 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2022-06-20 09:54:23 +1000 |
| commit | e42c6257a302c8c3105c801f10e4bb9059e3774c (patch) | |
| tree | 9887980f61ce2ff0e8d53e55ad9619598cc449a6 /sound/core/Kconfig | |
| parent | b6b9f90f054d8cb8d11832f0a04ec8077e8f1889 (diff) | |
| parent | f777316e52e14059a6a1df45cbf39a93ac49a593 (diff) | |
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
Diffstat (limited to 'sound/core/Kconfig')
| -rw-r--r-- | sound/core/Kconfig | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/sound/core/Kconfig b/sound/core/Kconfig index dd7b40734723..12990d9a4dff 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -154,6 +154,16 @@ config SND_VERBOSE_PRINTK You don't need this unless you're debugging ALSA. +config SND_CTL_FAST_LOOKUP + bool "Fast lookup of control elements" if EXPERT + default y + select XARRAY_MULTI + help + This option enables the faster lookup of control elements. + It will consume more memory because of the additional Xarray. + If you want to choose the memory footprint over the performance + inevitably, turn this off. + config SND_DEBUG bool "Debug" help @@ -178,14 +188,29 @@ config SND_PCM_XRUN_DEBUG sound clicking when system is loaded, it may help to determine the process or driver which causes the scheduling gaps. -config SND_CTL_VALIDATION - bool "Perform sanity-checks for each control element access" +config SND_CTL_INPUT_VALIDATION + bool "Validate input data to control API" + help + Say Y to enable the additional validation for the input data to + each control element, including the value range checks. + An error is returned from ALSA core for invalid inputs without + passing to the driver. This is a kind of hardening for drivers + that have no proper error checks, at the cost of a slight + performance overhead. + +config SND_CTL_DEBUG + bool "Enable debugging feature for control API" depends on SND_DEBUG help - Say Y to enable the additional validation of each control element - access, including sanity-checks like whether the values returned - from the driver are in the proper ranges or the check of the invalid - access at out-of-array areas. + Say Y to enable the debugging feature for ALSA control API. + It performs the additional sanity-checks for each control element + read access, such as whether the values returned from the driver + are in the proper ranges or the check of the invalid access at + out-of-array areas. The error is printed when the driver gives + such unexpected values. + When you develop a driver that deals with control elements, it's + strongly recommended to try this one once and verify whether you see + any relevant errors or not. config SND_JACK_INJECTION_DEBUG bool "Sound jack injection interface via debugfs" |