eessppeelllloo/cryptsetup
1
0
Fork 0
mirror of https://gitlab.com/cryptsetup/cryptsetup.git synced 2025-12-05 16:00:05 +01:00
Code Issues Packages Projects Releases Wiki Activity

Set process priority only for PBKDF benchmark.

Browse Source 
Do not increase priority for the whole run, only
increase it when we calculate PBKDF paramaters.
This commit is contained in:
Milan Broz
2022-08-16 19:48:31 +02:00
parent 21d87a246e
commit b9bf657449
3 changed files with 33 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
lib/internal.h
View File

@@ -179,6 +179,7 @@ int crypt_get_debug_level(void);
int crypt_memlock_inc(struct crypt_device *ctx);
int crypt_memlock_dec(struct crypt_device *ctx);
void crypt_process_priority(struct crypt_device *cd, int *priority, bool raise);
int crypt_metadata_locking_enabled(void);

29
lib/utils.c
View File

@@ -59,6 +59,35 @@ uint64_t crypt_getphysmemory_kb(void)
return phys_memory_kb;
}
void crypt_process_priority(struct crypt_device *cd, int *priority, bool raise)
{
int _priority, new_priority;
if (raise) {
_priority = getpriority(PRIO_PROCESS, 0);
if (_priority < 0)
_priority = 0;
if (priority)
*priority = _priority;
/*
* Do not bother checking CAP_SYS_NICE as device activation
* requires CAP_SYSADMIN later anyway.
*/
if (getuid() || geteuid())
new_priority = 0;
else
new_priority = -18;
if (setpriority(PRIO_PROCESS, 0, new_priority))
log_dbg(cd, "Cannot raise process priority.");
} else {
_priority = priority ? *priority : 0;
if (setpriority(PRIO_PROCESS, 0, _priority))
log_dbg(cd, "Cannot reset process priority.");
}
}
/* MEMLOCK */
#define DEFAULT_PROCESS_PRIORITY -18

4
lib/utils_benchmark.c
View File

@@ -98,7 +98,7 @@ int crypt_benchmark_pbkdf(struct crypt_device *cd,
int (*progress)(uint32_t time_ms, void *usrptr),
void *usrptr)
{
int r;
int r, priority;
const char *kdf_opt;
if (!pbkdf || (!password && password_size))
@@ -112,10 +112,12 @@ int crypt_benchmark_pbkdf(struct crypt_device *cd,
log_dbg(cd, "Running %s(%s) benchmark.", pbkdf->type, kdf_opt);
crypt_process_priority(cd, &priority, true);
r = crypt_pbkdf_perf(pbkdf->type, pbkdf->hash, password, password_size,
salt, salt_size, volume_key_size, pbkdf->time_ms,
pbkdf->max_memory_kb, pbkdf->parallel_threads,
&pbkdf->iterations, &pbkdf->max_memory_kb, progress, usrptr);
crypt_process_priority(cd, &priority, false);
if (!r)
log_dbg(cd, "Benchmark returns %s(%s) %u iterations, %u memory, %u threads (for %zu-bits key).",