redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

tools: turbostat: fix bitwise and operand 

bug could cause false positive on indicating
presence of invarient TSC or APERF support.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
hifive-unleashed-5.1
Thomas Renninger 2011-01-21 15:11:19 +01:00 committed by Len Brown
parent 6148a47ac3
commit 8209e054b6
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
tools/power/x86/turbostat/turbostat.c
View File

@ -892,7 +892,7 @@ void check_cpuid()
* this check is valid for both Intel and AMD
*/
asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x80000007));
has_invariant_tsc = edx && (1 << 8);
has_invariant_tsc = edx & (1 << 8);
if (!has_invariant_tsc) {
fprintf(stderr, "No invariant TSC\n");
@ -905,7 +905,7 @@ void check_cpuid()
*/
asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (0x6));
has_aperf = ecx && (1 << 0);
has_aperf = ecx & (1 << 0);
if (!has_aperf) {
fprintf(stderr, "No APERF MSR\n");
exit(1);