diff options
author | Jiri Kosina <jkosina@suse.cz> | 2021-06-30 09:02:28 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2021-06-30 09:02:28 +0200 |
commit | 5a94296bc02ac616336da7b5332b86d2ca8827f0 (patch) | |
tree | d13c4e7db2b4b01adb87fbf2ea5bafd2dc920b2f /kernel/gcov/base.c | |
parent | 3b770932eefb7c0c6319d332023efee87eb12913 (diff) | |
parent | 24a31ea94922d391a96a9dd0a9a830de65423817 (diff) |
Merge branch 'for-5.14/amd-sfh' into for-linus
- support for Renoir and Cezanne SoCs
- support for Ambient Light Sensor
- support for Human Presence Detection sensor
all from Basavaraj Natikar
Diffstat (limited to 'kernel/gcov/base.c')
-rw-r--r-- | kernel/gcov/base.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/kernel/gcov/base.c b/kernel/gcov/base.c index 0ffe9f194080..073a3738c5e6 100644 --- a/kernel/gcov/base.c +++ b/kernel/gcov/base.c @@ -49,6 +49,55 @@ void gcov_enable_events(void) mutex_unlock(&gcov_lock); } +/** + * store_gcov_u32 - store 32 bit number in gcov format to buffer + * @buffer: target buffer or NULL + * @off: offset into the buffer + * @v: value to be stored + * + * Number format defined by gcc: numbers are recorded in the 32 bit + * unsigned binary form of the endianness of the machine generating the + * file. Returns the number of bytes stored. If @buffer is %NULL, doesn't + * store anything. + */ +size_t store_gcov_u32(void *buffer, size_t off, u32 v) +{ + u32 *data; + + if (buffer) { + data = buffer + off; + *data = v; + } + + return sizeof(*data); +} + +/** + * store_gcov_u64 - store 64 bit number in gcov format to buffer + * @buffer: target buffer or NULL + * @off: offset into the buffer + * @v: value to be stored + * + * Number format defined by gcc: numbers are recorded in the 32 bit + * unsigned binary form of the endianness of the machine generating the + * file. 64 bit numbers are stored as two 32 bit numbers, the low part + * first. Returns the number of bytes stored. If @buffer is %NULL, doesn't store + * anything. + */ +size_t store_gcov_u64(void *buffer, size_t off, u64 v) +{ + u32 *data; + + if (buffer) { + data = buffer + off; + + data[0] = (v & 0xffffffffUL); + data[1] = (v >> 32); + } + + return sizeof(*data) * 2; +} + #ifdef CONFIG_MODULES /* Update list and generate events when modules are unloaded. */ static int gcov_module_notifier(struct notifier_block *nb, unsigned long event, |