mirrors/busybox
0
0
Fork 0
mirror of https://git.busybox.net/busybox.git synced 2024-11-23 05:33:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

powertop: code shrink

Browse Source 
function                                             old     new   delta
print_intel_cstates                                  477     475      -2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2024-07-13 11:46:15 +02:00
parent 23da5c4b71
commit b20b3790b4
1 changed files with 6 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
procps/powertop.c
View File

@ -498,24 +498,11 @@ static NOINLINE int process_timer_stats(void)
}
#ifdef __i386__
/*
* Get information about CPU using CPUID opcode.
*/
static void cpuid(unsigned int *eax, unsigned int *ebx, unsigned int *ecx,
unsigned int *edx)
static void cpuid_eax_ecx_edx(unsigned *eax, unsigned *ebx, unsigned *ecx, unsigned *edx)
{
/* EAX value specifies what information to return */
asm (
" cpuid\n"
: "=a"(*eax), /* Output */
"=b"(*ebx),
"=c"(*ecx),
"=d"(*edx)
: "0"(*eax), /* Input */
"1"(*ebx),
"2"(*ecx),
"3"(*edx)
/* No clobbered registers */
asm ("cpuid"
: "=a"(*eax), "=b"(*ebx), "=c"(*ecx), "=d"(*edx)
: "0" (*eax), "2" (*ecx), "3" (*edx)
);
}
#endif
@ -592,8 +579,8 @@ static NOINLINE void print_intel_cstates(void)
return;
eax = 5;
ebx = ecx = edx = 0;
cpuid(&eax, &ebx, &ecx, &edx);
ecx = edx = 0; /* paranoia, should not be needed */
cpuid_eax_ecx_edx(&eax, /*unused:*/&ebx, &ecx, &edx);
if (!edx || !(ecx & 1))
return;