xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

um: Remove broken SMP support

Browse Source 
At times where UML used the TT mode to operate it had
kind of SMP support. It never got finished nor was
stable.
Let's rip out that cruft and stop confusing developers
which do tree-wide SMP cleanups.

If someone wants SMP support UML it has do be done from scratch.

Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger
2015-03-18 21:42:54 +01:00
parent d0b5e15f0c
commit 28fa468f53
10 changed files with 2 additions and 366 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
arch/um/kernel/um_arch.c
View File

@@ -66,12 +66,6 @@ static int show_cpuinfo(struct seq_file *m, void *v)
{
int index = 0;
#ifdef CONFIG_SMP
index = (struct cpuinfo_um *) v - cpu_data;
if (!cpu_online(index))
return 0;
#endif
seq_printf(m, "processor\t: %d\n", index);
seq_printf(m, "vendor_id\t: User Mode Linux\n");
seq_printf(m, "model name\t: UML\n");
@@ -168,23 +162,6 @@ __uml_setup("debug", no_skas_debug_setup,
" this flag is not needed to run gdb on UML in skas mode\n\n"
);
#ifdef CONFIG_SMP
static int __init uml_ncpus_setup(char *line, int *add)
{
if (!sscanf(line, "%d", &ncpus)) {
printf("Couldn't parse [%s]\n", line);
return -1;
}
return 0;
}
__uml_setup("ncpus=", uml_ncpus_setup,
"ncpus=<# of desired CPUs>\n"
" This tells an SMP kernel how many virtual processors to start.\n\n"
);
#endif
static int __init Usage(char *line, int *add)
{
const char **p;
@@ -380,15 +357,3 @@ void __init check_bugs(void)
void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
{
}
#ifdef CONFIG_SMP
void alternatives_smp_module_add(struct module *mod, char *name,
void *locks, void *locks_end,
void *text, void *text_end)
{
}
void alternatives_smp_module_del(struct module *mod)
{
}
#endif