/*
* Ptrace test for GPR/FPR registers in TM Suspend context
*
* Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include "ptrace.h"
#include "ptrace-gpr.h"
#include "tm.h"
/* Tracer and Tracee Shared Data */
int shm_id;
int *cptr, *pptr;
float a = FPR_1;
float b = FPR_2;
float c = FPR_3;
float d = FPR_4;
__attribute__((used)) void wait_parent(void)
{
cptr[2] = 1;
while (!cptr[1])
asm volatile("" : : : "memory");
}
void tm_spd_gpr(void)
{
unsigned long gpr_buf[18];
unsigned long result, texasr;
float fpr_buf[32];
cptr = (int *)shmat(shm_id, NULL, 0);
trans:
cptr[2] = 0;
asm __volatile__(
ASM_LOAD_GPR_IMMED(gpr_1)
ASM_LOAD_FPR_SINGLE_PRECISION(flt_1)
"1: ;"
"tbegin.;"
"beq 2f;"
ASM_LOAD_GPR_IMMED(gpr_2)
"tsuspend.;"
ASM_LOAD_GPR_IMMED(gpr_4)
ASM_LOAD_FPR_SINGLE_PRECISION(flt_4)
"bl wait_parent;"
"tresume.;"
"tend.;"
"li 0, 0;"
"ori %[res], 0, 0;"
"b 3f;"
/* Transaction abort handler */
"2: ;"
"li 0, 1;"
"ori %[res], 0, 0;"
"mfspr %[texasr], %[sprn_texasr];"
"3: ;"
: [res] "=r" (result), [texasr] "=r" (texasr)
: [gpr_1]"i"(GPR_1), [gpr_2]"i"(GPR_2), [gpr_4]"i"(GPR_4),
[sprn_texasr] "i" (SPRN_TEXASR), [flt_1] "r" (&a),
[flt_2] "r" (&b), [flt_4] "r" (&d)
: "memory", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"
);
if (result) {
if (!cptr[0])
goto trans;
shmdt((void *)cptr);
store_gpr(gpr_buf);
store_fpr_single_precision(fpr_buf);
if (validate_gpr(gpr_buf, GPR_3))
exit(1);
if (validate_fpr_float(fpr_buf, c))
exit(1);
exit(0);
}
shmdt((void *)cptr);
exit(1);
}
int trace_tm_spd_gpr(pid_t child)
{
unsigned long gpr[18];
unsigned long fpr[32];
FAIL_IF(start_trace(child));
FAIL_IF(show_gpr(child, gpr));
FAIL_IF(validate_gpr(gpr, GPR_4));
FAIL_IF(show_fpr(child, fpr));
FAIL_IF(validate_fpr(fpr, FPR_4_REP));
FAIL_IF(show_ckpt_fpr(child, fpr));
FAIL_IF(validate_fpr(fpr, FPR_1_REP));
FAIL_IF(show_ckpt_gpr(child, gpr));
FAIL_IF(validate_gpr(gpr, GPR_1));
FAIL_IF(write_ckpt_gpr(child, GPR_3));
FAIL_IF(write_ckpt_fpr(child, FPR_3_REP));
pptr[0] = 1;
pptr[1] = 1;
FAIL_IF(stop_trace(child));
return TEST_PASS;
}
int ptrace_tm_spd_gpr(void)
{
pid_t pid;
int ret, status;
SKIP_IF(!have_htm());
shm_id = shmget(IPC_PRIVATE, sizeof(int) * 3, 0777|IPC_CREAT);
pid = fork();
if (pid < 0) {
perror("fork() failed");
return TEST_FAIL;
}
if (pid == 0)
tm_spd_gpr();
if (pid) {
pptr = (int *)shmat(shm_id, NULL, 0);
pptr[0] = 0;
pptr[1] = 0;
while (!pptr[2])
asm volatile("" : : : "memory");
ret = trace_tm_spd_gpr(pid);
if (ret) {
kill(pid, SIGTERM);
shmdt((void *)pptr);
shmctl(shm_id, IPC_RMID, NULL);
return TEST_FAIL;
}
shmdt((void *)pptr);
ret = wait(&status);
shmctl(shm_id, IPC_RMID, NULL);
if (ret != pid) {
printf("Child's exit status not captured\n");
return TEST_FAIL;
}
return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL :
TEST_PASS;
}
return TEST_PASS;
}
int main(int argc, char *argv[])
{
return test_harness(ptrace_tm_spd_gpr, "ptrace_tm_spd_gpr");
}
diff options
platform/x86: ideapad-laptop: handle ACPI event 1
On Ideapad laptops, ACPI event 1 is currently not handled. Many models
log "ideapad_laptop: Unknown event: 1" every 20 seconds or so while
running on battery power. Some convertible laptops receive this event
when switching in and out of tablet mode.
This adds and additional case for event 1 in ideapad_acpi_notify to call
ideapad_input_report(priv, vpc_bit), so that the event is reported to
userspace and we avoid unnecessary logging.
Fixes bug #107481 (https://bugzilla.kernel.org/show_bug.cgi?id=107481)
Fixes bug #65751 (https://bugzilla.kernel.org/show_bug.cgi?id=65751)
Signed-off-by: Zach Ploskey <zach@ploskey.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>